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Merge tag 'debian/5.2.9-2'

Browse Source 
Release linux (5.2.9-2).

* Drop ABI reference files
* Refresh intel-iommu patches
This commit is contained in:
Ben Hutchings
2019-08-23 19:07:11 +01:00
parent 9b2a2f1eee 94195642c0
commit e280fac98c
276 changed files with 1702 additions and 363 deletions
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238
debian/changelog vendored
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@@ -16,6 +16,244 @@ linux (5.3~rc5-1~exp1) UNRELEASED; urgency=medium
-- Ben Hutchings <ben@decadent.org.uk> Mon, 05 Aug 2019 12:40:36 +0100
linux (5.2.9-2) unstable; urgency=medium
[ Ben Hutchings ]
* Partially revert "net: socket: implement 64-bit timestamps"
(fixes build/test regressions for glibc, qemu, suricata)
* [x86] intel-iommu: Exclude integrated GPUs by default (Closes: #935270):
- intel-iommu: Add option to exclude integrated GPU only
- intel-iommu: Add Kconfig option to exclude iGPU by default
- Enable INTEL_IOMMU_DEFAULT_ON_INTGPU_OFF instead of
INTEL_IOMMU_DEFAULT_ON
[ Thomas W ]
* [x86] Add various laptop modules. (Closes: #932086)
CONFIG_ACER_WIRELESS
CONFIG_LG_LAPTOP
CONFIG_SURFACE3_WMI
CONFIG_INTEL_WMI_THUNDERBOLT
CONFIG_PEAQ_WMI
CONFIG_TOSHIBA_WMI
CONFIG_SURFACE_3_BUTTON
-- Ben Hutchings <ben@decadent.org.uk> Wed, 21 Aug 2019 13:48:11 +0100
linux (5.2.9-1) unstable; urgency=medium
* New upstream stable update:
https://www.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.8
- scsi: fcoe: Embed fc_rport_priv in fcoe_rport structure
- libnvdimm/bus: Prepare the nd_ioctl() path to be re-entrant
- libnvdimm/bus: Fix wait_nvdimm_bus_probe_idle() ABBA deadlock
- ALSA: usb-audio: Sanity checks for each pipe and EP types
- ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check
- HID: wacom: fix bit shift for Cintiq Companion 2
- HID: Add quirk for HP X1200 PIXART OEM mouse
- atm: iphase: Fix Spectre v1 vulnerability (CVE-2017-5753)
- bnx2x: Disable multi-cos feature.
- drivers/net/ethernet/marvell/mvmdio.c: Fix non OF case (Closes: #908712)
- ife: error out when nla attributes are empty
- ip6_gre: reload ipv6h in prepare_ip6gre_xmit_ipv6
- ip6_tunnel: fix possible use-after-free on xmit
- ipip: validate header length in ipip_tunnel_xmit
- [armhf,arm64] mvpp2: fix panic on module removal
- [armhf,arm64] mvpp2: refactor MTU change code
- net: bridge: delete local fdb on device init failure
- net: bridge: mcast: don't delete permanent entries when fast leave is
enabled
- net: bridge: move default pvid init/deinit to NETDEV_REGISTER/UNREGISTER
- net: fix ifindex collision during namespace removal
- net/mlx5e: always initialize frag->last_in_page
- net/mlx5: Use reversed order when unregister devices
- net: phy: fixed_phy: print gpio error only if gpio node is present
- net: phy: mscc: initialize stats array
- net: sched: Fix a possible null-pointer dereference in dequeue_func()
- net sched: update vlan action for batched events operations
- net: sched: use temporary variable for actions indexes
- net/smc: do not schedule tx_work in SMC_CLOSED state
- [armhf,arm64] net: stmmac: Use netif_tx_napi_add() for TX polling
function
- tipc: compat: allow tipc commands without arguments
- tipc: fix unitilized skb list crash
- tun: mark small packets as owned by the tap sock
- net/mlx5: Fix modify_cq_in alignment
- net/mlx5e: Prevent encap flow counter update async to user query
- r8169: don't use MSI before RTL8168d
- net: fix bpf_xdp_adjust_head regression for generic-XDP
- [x86] hv_sock: Fix hang when a connection is closed
- net: phy: fix race in genphy_update_link
- net/smc: avoid fallback in case of non-blocking connect
- rocker: fix memory leaks of fib_work on two error return paths
- net/mlx5: Add missing RDMA_RX capabilities
- net/mlx5e: Fix matching of speed to PRM link modes
- compat_ioctl: pppoe: fix PPPOEIOCSFWD handling
- [x86] drm/i915/vbt: Fix VBT parsing for the PSR section
- Revert "mac80211: set NETIF_F_LLTX when using intermediate tx queues"
- [armhf,arm64] spi: bcm2835: Fix 3-wire mode if DMA is enabled
https://www.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.9
- Revert "PCI: Add missing link delays required by the PCIe spec"
- [arm64] iio: cros_ec_accel_legacy: Fix incorrect channel setting
- [x86] iio: imu: mpu6050: add missing available scan masks
- [x86] crypto: ccp - Fix oops by properly managing allocated structures
- [x86] crypto: ccp - Add support for valid authsize values less than 16
- [x86] crypto: ccp - Ignore tag length when decrypting GCM ciphertext
- driver core: platform: return -ENXIO for missing GpioInt
- usb: usbfs: fix double-free of usb memory upon submiturb error
- Revert "USB: rio500: simplify locking"
- usb: iowarrior: fix deadlock on disconnect
- sound: fix a memory leak bug
- [arm64,mips/octeon] mmc: cavium: Set the correct dma max segment size for
mmc_host
- [arm64,mips/octeon] mmc: cavium: Add the missing dma unmap when the dma
has finished.
- loop: set PF_MEMALLOC_NOIO for the worker thread
- bdev: Fixup error handling in blkdev_get() (Closes: #934378)
- Input: usbtouchscreen - initialize PM mutex before using it
- Input: elantech - enable SMBus on new (2018+) systems
- [x86] Input: synaptics - enable RMI mode for HP Spectre X360
- [x86] mm: Check for pfn instead of page in vmalloc_sync_one()
- [x86] mm: Sync also unmappings in vmalloc_sync_all()
- mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()
- [s390x] perf annotate: Fix s390 gap between kernel end and module start
- perf db-export: Fix thread__exec_comm()
- [s390x] perf record: Fix module size on s390
- [x86] purgatory: Do not use __builtin_memcpy and __builtin_memset
- [x86] purgatory: Use CFLAGS_REMOVE rather than reset KBUILD_CFLAGS
- genirq/affinity: Create affinity mask for single vector
- gfs2: gfs2_walk_metadata fix
- usb: yurex: Fix use-after-free in yurex_delete
- usb: typec: ucsi: ccg: Fix uninitilized symbol error
- usb: typec: tcpm: free log buf memory when remove debug file
- usb: typec: tcpm: remove tcpm dir if no children
- usb: typec: tcpm: Add NULL check before dereferencing config
- usb: typec: tcpm: Ignore unsupported/unknown alternate mode requests
- [armhf] can: flexcan: fix stop mode acknowledgment
- [armhf] can: flexcan: fix an use-after-free in flexcan_setup_stop_mode()
- can: peak_usb: fix potential double kfree_skb()
- [powerpc*] fix off by one in max_zone_pfn initialization for ZONE_DMA
- netfilter: nfnetlink: avoid deadlock due to synchronous request_module
- netfilter: Fix rpfilter dropping vrf packets by mistake
- netfilter: nf_tables: fix module autoload for redir
- netfilter: conntrack: always store window size un-scaled
- netfilter: nft_hash: fix symhash with modulus one
- rq-qos: don't reset has_sleepers on spurious wakeups
- rq-qos: set ourself TASK_UNINTERRUPTIBLE after we schedule
- rq-qos: use a mb for got_token
- netfilter: nf_tables: Support auto-loading for inet nat
- drm/amd/display: No audio endpoint for Dell MST display
- drm/amd/display: Clock does not lower in Updateplanes
- drm/amd/display: Wait for backlight programming completion in set
backlight level
- drm/amd/display: fix DMCU hang when going into Modern Standby
- drm/amd/display: use encoder's engine id to find matched free audio
device
- drm/amd/display: put back front end initialization sequence
- drm/amd/display: allocate 4 ddc engines for RV2
- drm/amd/display: Fix dc_create failure handling and 666 color depths
- drm/amd/display: Only enable audio if speaker allocation exists
- drm/amd/display: Increase size of audios array
- nl80211: fix NL80211_HE_MAX_CAPABILITY_LEN
- mac80211: fix possible memory leak in ieee80211_assign_beacon
- mac80211: don't warn about CW params when not using them
- allocate_flower_entry: should check for null deref
- hwmon: (nct6775) Fix register address and added missed tolerance for
nct6106
- [armhf] dts: imx6ul: fix clock frequency property name of I2C buses
- [powerpc*] papr_scm: Force a scm-unbind if initial scm-bind fails
- [arm64] Force SSBS on context switch
- [arm64] entry: SP Alignment Fault doesn't write to FAR_EL1
- [x86] iommu/vt-d: Check if domain->pgd was allocated
- [arm64] drm/msm/dpu: Correct dpu encoder spinlock initialization
- [ppc64] cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()
- [s390x] qdio: add sanity checks to the fast-requeue path
- ALSA: compress: Fix regression on compressed capture streams
- ALSA: compress: Prevent bypasses of set_params
- ALSA: compress: Don't allow paritial drain operations on capture streams
- ALSA: compress: Be more restrictive about when a drain is allowed
- perf script: Fix off by one in brstackinsn IPC computation
- perf tools: Fix proper buffer size for feature processing
- perf stat: Fix segfault for event group in repeat mode
- perf session: Fix loading of compressed data split across adjacent
records
- perf probe: Avoid calling freeing routine multiple times for same pointer
- drbd: dynamically allocate shash descriptor
- ACPI/IORT: Fix off-by-one check in iort_dev_find_its_id()
- nvme: ignore subnqn for ADATA SX6000LNP
- nvme: fix memory leak caused by incorrect subsystem free
- scsi: megaraid_sas: fix panic on loading firmware crashdump
- scsi: ibmvfc: fix WARN_ON during event pool release
- scsi: scsi_dh_alua: always use a 2 second delay before retrying RTPG
- test_firmware: fix a memory leak bug
- tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop
- [x86] perf/intel: Fix SLOTS PEBS event constraint
- [x86] perf/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x
register
- [x86] perf: Apply more accurate check on hypervisor platform
- perf/core: Fix creating kernel counters for PMUs that override event->cpu
- [s390x] dma: provide proper ARCH_ZONE_DMA_BITS value
- HID: sony: Fix race condition between rumble and device remove.
- ALSA: usb-audio: fix a memory leak bug
- [x86] KVM/nSVM: properly map nested VMCB
- can: peak_usb: pcan_usb_pro: Fix info-leaks to USB devices
- can: peak_usb: pcan_usb_fd: Fix info-leaks to USB devices
- hwmon: (nct7802) Fix wrong detection of in4 presence
- hwmon: (lm75) Fixup tmp75b clr_mask
- [x86] drm/i915: Fix wrong escape clock divisor init for GLK
- ALSA: firewire: fix a memory leak bug
- ALSA: hiface: fix multiple memory leak bugs
- ALSA: hda - Don't override global PCM hw info flag
- [x86] ALSA: hda - Workaround for crackled sound on AMD controller
(1022:1457)
- mac80211: don't WARN on short WMM parameters from AP
- dax: dax_layout_busy_page() should not unmap cow pages
- SMB3: Fix deadlock in validate negotiate hits reconnect
- smb3: send CAP_DFS capability during session setup
- NFSv4: Fix delegation state recovery
- NFSv4: Check the return value of update_open_stateid()
- NFSv4: Fix an Oops in nfs4_do_setattr
- [x86] KVM: Fix leak vCPU's VMCS value into other pCPU
- [armhf,arm64] KVM: Sync ICH_VMCR_EL2 back when about to block
- mwifiex: fix 802.11n/WPA detection
- iwlwifi: don't unmap as page memory that was mapped as single
- iwlwifi: mvm: fix an out-of-bound access
- iwlwifi: mvm: fix a use-after-free bug in iwl_mvm_tx_tso_segment
- iwlwifi: mvm: don't send GEO_TX_POWER_LIMIT on version < 41
- iwlwifi: mvm: fix version check for GEO_TX_POWER_LIMIT support
[ Salvatore Bonaccorso ]
* Enable Realtek 802.11ac wireless chips support (Closes: #933963)
[ Ben Hutchings ]
* [armel] fb-modules: Remove xgifb, which was removed upstream (fixes FTBFS)
* tracefs: Fix potential null dereference in default_file_open()
(Closes: #934304)
* [arm64] hwrandom: Re-enable HW_RANDOM_OMAP as module (Closes: #931707)
* ptp: Change CAVIUM_PTP from built-in to modular (Closes: #934848)
* bug script: Check whether /e/n/interfaces exists (Closes: #934824)
* bug script: Include network configuration from /e/n/interfaces.d
* bug script: Check for unreadable /e/n/interfaces files
* [x86] iommu: Enable INTEL_IOMMU_DEFAULT_ON (Closes: #934309)
* HID: Enable HID_BIGBEN_FF, HID_MACALLY, HID_GFRM, HID_GT683R,
HID_VIEWSONIC, HID_MALTRON, HID_U2FZERO as modules (Closes: #934091)
* usbip: network: Fix unaligned member access (Closes: #925766)
* libbpf: Fix cross-build
* [rt] Update to 5.2.9-rt3:
- i2c: exynos5: Remove IRQF_ONESHOT
- i2c: hix5hd2: Remove IRQF_ONESHOT
- sched/deadline: Ensure inactive_timer runs in hardirq context
- thermal/x86_pkg_temp: make pkg_temp_lock a raw spinlock
- dma-buf: Use seqlock_t instread disabling preemption
- KVM: arm/arm64: Let the timer expire in hardirq context on RT
- x86: preempt: Check preemption level before looking at lazy-preempt
- arm64: preempt: Fixup lazy preempt
- arm64: preempt: Check preemption level before looking at lazy-preempt
[ Alper Nebi Yasak ]
* [arm64] udeb: Add pl330 to kernel-image
-- Ben Hutchings <ben@decadent.org.uk> Sun, 18 Aug 2019 22:54:21 +0100
linux (5.2.7-1) unstable; urgency=medium
* New upstream stable update:

2
debian/config/arm64/config vendored
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@@ -114,7 +114,7 @@ CONFIG_TEGRA_ACONNECT=y
## file: drivers/char/hw_random/Kconfig
##
CONFIG_HW_RANDOM_BCM2835=m
# CONFIG_HW_RANDOM_OMAP is not set
CONFIG_HW_RANDOM_OMAP=m
CONFIG_HW_RANDOM_HISI=m
CONFIG_HW_RANDOM_XGENE=m
CONFIG_HW_RANDOM_MESON=m

25
debian/config/config vendored
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@@ -831,10 +831,12 @@ CONFIG_HID_ASUS=m
CONFIG_HID_AUREAL=m
CONFIG_HID_BELKIN=y
CONFIG_HID_BETOP_FF=m
CONFIG_HID_BIGBEN_FF=m
CONFIG_HID_CHERRY=y
CONFIG_HID_CHICONY=y
CONFIG_HID_CORSAIR=m
CONFIG_HID_COUGAR=m
CONFIG_HID_MACALLY=m
CONFIG_HID_PRODIKEYS=m
CONFIG_HID_CMEDIA=m
CONFIG_HID_CP2112=m
@@ -847,14 +849,15 @@ CONFIG_HID_ELECOM=m
CONFIG_HID_ELO=m
CONFIG_HID_EZKEY=y
CONFIG_HID_GEMBIRD=m
# CONFIG_HID_GFRM is not set
CONFIG_HID_GFRM=m
CONFIG_HID_HOLTEK=m
CONFIG_HOLTEK_FF=y
# CONFIG_HID_GT683R is not set
CONFIG_HID_GT683R=m
CONFIG_HID_KEYTOUCH=m
CONFIG_HID_KYE=m
CONFIG_HID_UCLOGIC=m
CONFIG_HID_WALTOP=m
CONFIG_HID_VIEWSONIC=m
CONFIG_HID_GYRATION=m
CONFIG_HID_ICADE=m
CONFIG_HID_ITE=m
@@ -871,6 +874,7 @@ CONFIG_LOGIRUMBLEPAD2_FF=y
CONFIG_LOGIG940_FF=y
CONFIG_LOGIWHEELS_FF=y
CONFIG_HID_MAGICMOUSE=m
CONFIG_HID_MALTRON=m
CONFIG_HID_MAYFLASH=m
CONFIG_HID_REDRAGON=m
CONFIG_HID_MICROSOFT=y
@@ -912,6 +916,7 @@ CONFIG_HID_THINGM=m
CONFIG_HID_THRUSTMASTER=m
CONFIG_THRUSTMASTER_FF=y
CONFIG_HID_UDRAW_PS3=m
CONFIG_HID_U2FZERO=m
CONFIG_HID_WACOM=m
CONFIG_HID_WIIMOTE=m
CONFIG_HID_XINMO=m
@@ -3224,7 +3229,7 @@ CONFIG_NET_VENDOR_CAVIUM=y
# CONFIG_THUNDER_NIC_VF is not set
# CONFIG_THUNDER_NIC_BGX is not set
# CONFIG_THUNDER_NIC_RGX is not set
CONFIG_CAVIUM_PTP=y
CONFIG_CAVIUM_PTP=m
CONFIG_LIQUIDIO=m
CONFIG_LIQUIDIO_VF=m
@@ -4119,6 +4124,13 @@ CONFIG_RTL8821AE=m
CONFIG_RTL8192CU=m
# CONFIG_RTLWIFI_DEBUG is not set
##
## file: drivers/net/wireless/realtek/rtw88/Kconfig
##
CONFIG_RTW88=m
CONFIG_RTW88_8822BE=y
CONFIG_RTW88_8822CE=y
##
## file: drivers/net/wireless/rsi/Kconfig
##
@@ -4350,14 +4362,21 @@ CONFIG_YENTA_TOSHIBA=y
##
## file: drivers/platform/x86/Kconfig
##
CONFIG_ACER_WIRELESS=m
CONFIG_ASUS_LAPTOP=m
CONFIG_FUJITSU_LAPTOP=m
CONFIG_HP_WMI=m
CONFIG_LG_LAPTOP=m
CONFIG_MSI_LAPTOP=m
CONFIG_PANASONIC_LAPTOP=m
CONFIG_COMPAL_LAPTOP=m
CONFIG_SONY_LAPTOP=m
CONFIG_SURFACE3_WMI=m
CONFIG_INTEL_WMI_THUNDERBOLT=m
CONFIG_PEAQ_WMI=m
CONFIG_TOSHIBA_WMI=m
# CONFIG_SAMSUNG_LAPTOP is not set
CONFIG_SURFACE_3_BUTTON=m
##
## file: drivers/pnp/Kconfig

2
debian/config/kernelarch-x86/config vendored
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@@ -832,7 +832,7 @@ CONFIG_TOUCHSCREEN_SURFACE3_SPI=m
##
CONFIG_INTEL_IOMMU=y
CONFIG_INTEL_IOMMU_SVM=y
# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
CONFIG_INTEL_IOMMU_DEFAULT_ON_INTGPU_OFF=y
CONFIG_IRQ_REMAP=y
##

3
debian/installer/modules/arm64/kernel-image vendored
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@@ -23,3 +23,6 @@ cros_ec_spi ?
# PCIe PHYs
phy-rockchip-pcie ?
# For spi-rockchip
pl330 ?

1
debian/installer/modules/armel-marvell/fb-modules vendored
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@@ -1,2 +1 @@
udlfb
xgifb

2
debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch vendored
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@@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 28 May 2018 15:24:20 +0200
Subject: [PATCH 1/4] Split IRQ-off and zone->lock while freeing pages from PCP
list #1
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Split the IRQ-off section while accessing the PCP list from zone->lock
while freeing pages.

2
debian/patches-rt/0001-printk-rb-add-printk-ring-buffer-documentation.patch vendored
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@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:39 +0100
Subject: [PATCH 01/25] printk-rb: add printk ring buffer documentation
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The full documentation file for the printk ring buffer.

2
debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch vendored
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@@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 28 May 2018 15:24:21 +0200
Subject: [PATCH 2/4] Split IRQ-off and zone->lock while freeing pages from PCP
list #2
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Split the IRQ-off section while accessing the PCP list from zone->lock
while freeing pages.

2
debian/patches-rt/0002-printk-rb-add-prb-locking-functions.patch vendored
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@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:40 +0100
Subject: [PATCH 02/25] printk-rb: add prb locking functions
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Add processor-reentrant spin locking functions. These allow
restricting the number of possible contexts to 2, which can simplify

2
debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch vendored
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@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 28 May 2018 15:24:22 +0200
Subject: [PATCH 3/4] mm/SLxB: change list_lock to raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The list_lock is used with used with IRQs off on RT. Make it a raw_spinlock_t
otherwise the interrupts won't be disabled on -RT. The locking rules remain

2
debian/patches-rt/0003-printk-rb-define-ring-buffer-struct-and-initializer.patch vendored
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@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:41 +0100
Subject: [PATCH 03/25] printk-rb: define ring buffer struct and initializer
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
See Documentation/printk-ringbuffer.txt for details about the
initializer arguments.

2
debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch vendored
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@@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 21 Jun 2018 17:29:19 +0200
Subject: [PATCH 4/4] mm/SLUB: delay giving back empty slubs to IRQ enabled
regions
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
__free_slab() is invoked with disabled interrupts which increases the
irq-off time while __free_pages() is doing the work.

2
debian/patches-rt/0004-printk-rb-add-writer-interface.patch vendored
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@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:42 +0100
Subject: [PATCH 04/25] printk-rb: add writer interface
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Add the writer functions prb_reserve() and prb_commit(). These make
use of processor-reentrant spin locks to limit the number of possible

2
debian/patches-rt/0005-printk-rb-add-basic-non-blocking-reading-interface.patch vendored
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@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:43 +0100
Subject: [PATCH 05/25] printk-rb: add basic non-blocking reading interface
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Add reader iterator static declaration/initializer, dynamic
initializer, and functions to iterate and retrieve ring buffer data.

2
debian/patches-rt/0006-printk-rb-add-blocking-reader-support.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:44 +0100
Subject: [PATCH 06/25] printk-rb: add blocking reader support
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Add a blocking read function for readers. An irq_work function is
used to signal the wait queue so that write notification can

2
debian/patches-rt/0007-printk-rb-add-functionality-required-by-printk.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:45 +0100
Subject: [PATCH 07/25] printk-rb: add functionality required by printk
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The printk subsystem needs to be able to query the size of the ring
buffer, seek to specific entries within the ring buffer, and track

2
debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:46 +0100
Subject: [PATCH 08/25] printk: add ring buffer and kthread
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The printk ring buffer provides an NMI-safe interface for writing
messages to a ring buffer. Using such a buffer for alleviates printk

2
debian/patches-rt/0009-printk-remove-exclusive-console-hack.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:47 +0100
Subject: [PATCH 09/25] printk: remove exclusive console hack
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
In order to support printing the printk log history when new
consoles are registered, a global exclusive_console variable is

2
debian/patches-rt/0010-printk-redirect-emit-store-to-new-ringbuffer.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:48 +0100
Subject: [PATCH 10/25] printk: redirect emit/store to new ringbuffer
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
vprintk_emit and vprintk_store are the main functions that all printk
variants eventually go through. Change these to store the message in

2
debian/patches-rt/0011-printk_safe-remove-printk-safe-code.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:49 +0100
Subject: [PATCH 11/25] printk_safe: remove printk safe code
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
vprintk variants are now NMI-safe so there is no longer a need for
the "safe" calls.

2
debian/patches-rt/0012-printk-minimize-console-locking-implementation.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:50 +0100
Subject: [PATCH 12/25] printk: minimize console locking implementation
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Since printing of the printk buffer is now handled by the printk
kthread, minimize the console locking functions to just handle

2
debian/patches-rt/0013-printk-track-seq-per-console.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:51 +0100
Subject: [PATCH 13/25] printk: track seq per console
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Allow each console to track which seq record was last printed. This
simplifies identifying dropped records.

2
debian/patches-rt/0014-printk-do-boot_delay_msec-inside-printk_delay.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:52 +0100
Subject: [PATCH 14/25] printk: do boot_delay_msec inside printk_delay
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Both functions needed to be called one after the other, so just
integrate boot_delay_msec into printk_delay for simplification.

2
debian/patches-rt/0015-printk-print-history-for-new-consoles.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:53 +0100
Subject: [PATCH 15/25] printk: print history for new consoles
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
When new consoles register, they currently print how many messages
they have missed. However, many (or all) of those messages may still

2
debian/patches-rt/0016-printk-implement-CON_PRINTBUFFER.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:54 +0100
Subject: [PATCH 16/25] printk: implement CON_PRINTBUFFER
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
If the CON_PRINTBUFFER flag is not set, do not replay the history
for that console.

2
debian/patches-rt/0017-printk-add-processor-number-to-output.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:55 +0100
Subject: [PATCH 17/25] printk: add processor number to output
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
It can be difficult to sort printk out if multiple processors are
printing simultaneously. Add the processor number to the printk

2
debian/patches-rt/0018-console-add-write_atomic-interface.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:56 +0100
Subject: [PATCH 18/25] console: add write_atomic interface
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Add a write_atomic callback to the console. This is an optional
function for console drivers. The function must be atomic (including

2
debian/patches-rt/0019-printk-introduce-emergency-messages.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:57 +0100
Subject: [PATCH 19/25] printk: introduce emergency messages
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Console messages are generally either critical or non-critical.
Critical messages are messages such as crashes or sysrq output.

2
debian/patches-rt/0020-serial-8250-implement-write_atomic.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:58 +0100
Subject: [PATCH 20/25] serial: 8250: implement write_atomic
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Implement a non-sleeping NMI-safe write_atomic console function in
order to support emergency printk messages.

2
debian/patches-rt/0021-printk-implement-KERN_CONT.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:29:59 +0100
Subject: [PATCH 21/25] printk: implement KERN_CONT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Implement KERN_CONT based on the printing CPU rather than on the
printing task. As long as the KERN_CONT messages are coming from the

2
debian/patches-rt/0022-printk-implement-dev-kmsg.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:30:00 +0100
Subject: [PATCH 22/25] printk: implement /dev/kmsg
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Since printk messages are now logged to a new ring buffer, update
the /dev/kmsg functions to pull the messages from there.

2
debian/patches-rt/0023-printk-implement-syslog.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:30:01 +0100
Subject: [PATCH 23/25] printk: implement syslog
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Since printk messages are now logged to a new ring buffer, update
the syslog functions to pull the messages from there.

2
debian/patches-rt/0024-printk-implement-kmsg_dump.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:30:02 +0100
Subject: [PATCH 24/25] printk: implement kmsg_dump
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Since printk messages are now logged to a new ring buffer, update
the kmsg_dump functions to pull the messages from there.

2
debian/patches-rt/0025-printk-remove-unused-code.patch vendored
View File

@@ -1,7 +1,7 @@
From: John Ogness <john.ogness@linutronix.de>
Date: Tue, 12 Feb 2019 15:30:03 +0100
Subject: [PATCH 25/25] printk: remove unused code
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Code relating to the safe context and anything dealing with the
previous log buffer implementation is no longer in use. Remove it.

2
debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch vendored
View File

@@ -1,7 +1,7 @@
From: "Yadi.hu" <yadi.hu@windriver.com>
Date: Wed, 10 Dec 2014 10:32:09 +0800
Subject: ARM: enable irq in translation/section permission fault handlers
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Probably happens on all ARM, with
CONFIG_PREEMPT_RT_FULL

2
debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch vendored
View File

@@ -4,7 +4,7 @@ Subject: [PATCH] Drivers: hv: vmbus: include header for get_irq_regs()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
On !RT the header file get_irq_regs() gets pulled in via other header files. On
RT it does not and the build fails:

47
debian/patches-rt/KVM-arm-arm64-Let-the-timer-expire-in-hardirq-contex.patch vendored Normal file
View File

@@ -0,0 +1,47 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 13 Aug 2019 14:29:41 +0200
Subject: [PATCH] KVM: arm/arm64: Let the timer expire in hardirq context
on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The timers are canceled from an preempt-notifier which is invoked with
disabled preemption which is not allowed on PREEMPT_RT.
The timer callback is short so in could be invoked in hard-IRQ context
on -RT.
Let the timer expire on hard-IRQ context even on -RT.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <maz@kernel.org>
Tested-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
virt/kvm/arm/arch_timer.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -80,7 +80,7 @@ static inline bool userspace_irqchip(str
static void soft_timer_start(struct hrtimer *hrt, u64 ns)
{
hrtimer_start(hrt, ktime_add_ns(ktime_get(), ns),
- HRTIMER_MODE_ABS);
+ HRTIMER_MODE_ABS_HARD);
}
static void soft_timer_cancel(struct hrtimer *hrt)
@@ -697,11 +697,11 @@ void kvm_timer_vcpu_init(struct kvm_vcpu
update_vtimer_cntvoff(vcpu, kvm_phys_timer_read());
ptimer->cntvoff = 0;
- hrtimer_init(&timer->bg_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
+ hrtimer_init(&timer->bg_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
timer->bg_timer.function = kvm_bg_timer_expire;
- hrtimer_init(&vtimer->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
- hrtimer_init(&ptimer->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
+ hrtimer_init(&vtimer->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
+ hrtimer_init(&ptimer->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
vtimer->hrtimer.function = kvm_hrtimer_expire;
ptimer->hrtimer.function = kvm_hrtimer_expire;

8
debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch vendored
View File

@@ -1,7 +1,7 @@
From: Josh Cartwright <joshc@ni.com>
Date: Thu, 11 Feb 2016 11:54:01 -0600
Subject: KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
kvm_arch_vcpu_ioctl_run() disables the use of preemption when updating
the vgic and timer states to prevent the calling task from migrating to
@@ -23,7 +23,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -691,7 +691,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_v
@@ -702,7 +702,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_v
* involves poking the GIC, which must be done in a
* non-preemptible context.
*/
@@ -32,7 +32,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
kvm_pmu_flush_hwstate(vcpu);
@@ -740,7 +740,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_v
@@ -751,7 +751,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_v
kvm_timer_sync_hwstate(vcpu);
kvm_vgic_sync_hwstate(vcpu);
local_irq_enable();
@@ -41,7 +41,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
continue;
}
@@ -818,7 +818,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_v
@@ -829,7 +829,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_v
/* Exit types that need handling before we can be preempted */
handle_exit_early(vcpu, run, ret);

8
debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch vendored
View File

@@ -5,7 +5,7 @@ Cc: Anna Schumaker <anna.schumaker@netapp.com>,
linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org,
tglx@linutronix.de
Subject: NFSv4: replace seqcount_t with a seqlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The raw_write_seqcount_begin() in nfs4_reclaim_open_state() bugs me
because it maps to preempt_disable() in -RT which I can't have at this
@@ -37,7 +37,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
mutex_lock(&sp->so_delegreturn_mutex);
- seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
+ seq = read_seqbegin(&sp->so_reclaim_seqlock);
err = nfs4_open_delegation_recall(ctx, state, stateid, type);
err = nfs4_open_delegation_recall(ctx, state, stateid);
if (!err)
err = nfs_delegation_claim_locks(state, stateid);
- if (!err && read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
@@ -58,7 +58,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2911,7 +2911,7 @@ static int _nfs4_open_and_get_state(stru
@@ -2914,7 +2914,7 @@ static int _nfs4_open_and_get_state(stru
unsigned int seq;
int ret;
@@ -67,7 +67,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
ret = _nfs4_proc_open(opendata, ctx);
if (ret != 0)
@@ -2952,7 +2952,7 @@ static int _nfs4_open_and_get_state(stru
@@ -2955,7 +2955,7 @@ static int _nfs4_open_and_get_state(stru
if (d_inode(dentry) == state->inode) {
nfs_inode_attach_open_context(ctx);

2
debian/patches-rt/add_migrate_disable.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat, 27 May 2017 19:02:06 +0200
Subject: kernel/sched/core: add migrate_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
---
include/linux/preempt.h | 23 ++++++++

2
debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 11 Oct 2017 17:43:49 +0200
Subject: apparmor: use a locallock instead preempt_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
get_buffers() disables preemption which acts as a lock for the per-CPU
variable. Since we can't disable preemption here on RT, a local_lock is

2
debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch vendored
View File

@@ -1,7 +1,7 @@
From: Anders Roxell <anders.roxell@linaro.org>
Date: Thu, 14 May 2015 17:52:17 +0200
Subject: arch/arm64: Add lazy preempt support
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
arm64 is missing support for PREEMPT_RT. The main feature which is
lacking is support for lazy preemption. The arch-specific entry code,

2
debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 1 Dec 2017 10:42:03 +0100
Subject: [PATCH] arm*: disable NEON in kernel mode
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
NEON in kernel mode is used by the crypto algorithms and raid6 code.
While the raid6 code looks okay, the crypto algorithms do not: NEON

2
debian/patches-rt/arm-enable-highmem-for-rt.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: arm: Enable highmem for rt
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 13 Feb 2013 11:03:11 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
fixup highmem for ARM.

2
debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 11 Mar 2013 21:37:27 +0100
Subject: arm/highmem: Flush tlb on unmap
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The tlb should be flushed on unmap and thus make the mapping entry
invalid. This is only done in the non-debug case which does not look

2
debian/patches-rt/arm-imx6-cpuidle-Use-raw_spinlock_t.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 14 May 2019 17:07:44 +0200
Subject: [PATCH] arm: imx6: cpuidle: Use raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The idle call back is invoked with disabled interrupts and requires
raw_spinlock_t locks to work.

2
debian/patches-rt/arm-include-definition-for-cpumask_t.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 22 Dec 2016 17:28:33 +0100
Subject: [PATCH] arm: include definition for cpumask_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
This definition gets pulled in by other files. With the (later) split of
RCU and spinlock.h it won't compile anymore.

2
debian/patches-rt/arm-preempt-lazy-support.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: arm: Add support for lazy preemption
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 31 Oct 2012 12:04:11 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Implement the arm pieces for lazy preempt.

2
debian/patches-rt/arm-remove-printk_nmi_.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 15 Feb 2019 14:34:20 +0100
Subject: [PATCH] arm: remove printk_nmi_.*()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
It is no longer provided by the printk core code.

2
debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 09:13:42 +0200
Subject: [PATCH] arm64: KVM: compute_layout before altenates are applied
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
compute_layout() is invoked as part of an alternative fixup under
stop_machine() and needs a sleeping lock as part of get_random_long().

2
debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch vendored
View File

@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 25 Jul 2018 14:02:38 +0200
Subject: [PATCH] arm64: fpsimd: use preemp_disable in addition to
local_bh_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
In v4.16-RT I noticed a number of warnings from task_fpsimd_load(). The
code disables BH and expects that it is not preemptible. On -RT the

25
debian/patches-rt/arm64-preempt-Check-preemption-level-before-looking-.patch vendored Normal file
View File

@@ -0,0 +1,25 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 14 Aug 2019 17:08:58 +0200
Subject: [PATCH] arm64: preempt: Check preemption level before looking at
lazy-preempt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Before evaluating the lazy-preempt state it must be ensure that the
preempt-count is zero.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
arch/arm64/include/asm/preempt.h | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/arm64/include/asm/preempt.h
+++ b/arch/arm64/include/asm/preempt.h
@@ -73,6 +73,8 @@ static inline bool __preempt_count_dec_a
if (!pc || !READ_ONCE(ti->preempt_count))
return true;
#ifdef CONFIG_PREEMPT_LAZY
+ if ((pc & ~PREEMPT_NEED_RESCHED))
+ return false;
if (current_thread_info()->preempt_lazy_count)
return false;
return test_thread_flag(TIF_NEED_RESCHED_LAZY);

27
debian/patches-rt/arm64-preempt-Fixup-lazy-preempt.patch vendored Normal file
View File

@@ -0,0 +1,27 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 13 Aug 2019 11:53:23 +0200
Subject: [PATCH] arm64: preempt: Fixup lazy preempt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The irq-exit assmebly checks preempt count and need-resched flag
followed by lazy-preempt status. This is a bug. It should schedule if
preempt-count is zero _and_ need_resched is set _or_ preempt-count is
zero and check the lazy-preempt status.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
arch/arm64/kernel/entry.S | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -680,7 +680,8 @@ alternative_if ARM64_HAS_IRQ_PRIO_MASKIN
orr x24, x24, x0
alternative_else_nop_endif
- cbnz x24, 2f // preempt count != 0
+ cbz x24, 1f // (need_resched + count) == 0
+ cbnz w24, 2f // count != 0
ldr w24, [tsk, #TSK_TI_PREEMPT_LAZY] // get preempt lazy count
cbnz w24, 2f // preempt lazy count != 0

2
debian/patches-rt/at91_dont_enable_disable_clock.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 09 Mar 2016 10:51:06 +0100
Subject: arm: at91: do not disable/enable clocks in a row
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Currently the driver will disable the clock and enable it one line later
if it is switching from periodic mode into one shot.

8
debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch vendored
View File

@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 13 Mar 2018 13:49:16 +0100
Subject: [PATCH] block: blk-mq: move blk_queue_usage_counter_release()
into process context
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
| BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914
| in_atomic(): 1, irqs_disabled(): 0, pid: 255, name: kworker/u257:6
@@ -52,7 +52,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -403,12 +403,21 @@ void blk_queue_exit(struct request_queue
@@ -404,12 +404,21 @@ void blk_queue_exit(struct request_queue
percpu_ref_put(&q->q_usage_counter);
}
@@ -75,7 +75,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
}
static void blk_rq_timed_out_timer(struct timer_list *t)
@@ -479,6 +488,7 @@ struct request_queue *blk_alloc_queue_no
@@ -480,6 +489,7 @@ struct request_queue *blk_alloc_queue_no
spin_lock_init(&q->queue_lock);
init_waitqueue_head(&q->mq_freeze_wq);
@@ -93,7 +93,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
#include <linux/pagemap.h>
#include <linux/backing-dev-defs.h>
#include <linux/wait.h>
@@ -554,6 +555,7 @@ struct request_queue {
@@ -559,6 +560,7 @@ struct request_queue {
#endif
struct rcu_head rcu_head;
wait_queue_head_t mq_freeze_wq;

2
debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 29 Jan 2015 15:10:08 +0100
Subject: block/mq: don't complete requests via IPI
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The IPI runs in hardirq context and there are sleeping locks. Assume caches are
shared and complete them on the local CPU.

2
debian/patches-rt/block-mq-drop-preempt-disable.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: block/mq: do not invoke preempt_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
preempt_disable() and get_cpu() don't play well together with the sleeping
locks it tries to allocate later.

2
debian/patches-rt/block-mq-use-cpu_light.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 9 Apr 2014 10:37:23 +0200
Subject: block: mq: use cpu_light()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
there is a might sleep splat because get_cpu() disables preemption and
later we grab a lock. As a workaround for this we use get_cpu_light().

2
debian/patches-rt/block-use-cpu-chill.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: block: Use cpu_chill() for retry loops
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 20 Dec 2012 18:28:26 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Steven also observed a live lock when there was a

2
debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 18:19:48 +0200
Subject: [PATCH] cgroup: use irqsave in cgroup_rstat_flush_locked()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
All callers of cgroup_rstat_flush_locked() acquire cgroup_rstat_lock
either with spin_lock_irq() or spin_lock_irqsave().

2
debian/patches-rt/clocksource-tclib-add-proper-depend.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 29 May 2019 15:50:36 +0200
Subject: clocksource: TCLIB: Add proper depend
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Add a depends statement on ATMEL_TCLIB to ensure that it is not built on !ATMEL
if COMPILE_TEST is enabled. The build will fail because the driver depends on

2
debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch vendored
View File

@@ -1,7 +1,7 @@
From: Benedikt Spranger <b.spranger@linutronix.de>
Date: Mon, 8 Mar 2010 18:57:04 +0100
Subject: clocksource: TCLIB: Allow higher clock rates for clock events
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
As default the TCLIB uses the 32KiHz base clock rate for clock events.
Add a compile time selection to allow higher clock resulution.

4
debian/patches-rt/completion-use-simple-wait-queues.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: completion: Use simple wait queues
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 11 Jan 2013 11:23:51 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Completions have no long lasting callbacks and therefor do not need
the complex waitqueue variant. Use simple waitqueues which reduces the
@@ -51,7 +51,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
default:
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -1705,7 +1705,7 @@ static void ffs_data_put(struct ffs_data
@@ -1708,7 +1708,7 @@ static void ffs_data_put(struct ffs_data
pr_info("%s(): freeing\n", __func__);
ffs_data_clear(ffs);
BUG_ON(waitqueue_active(&ffs->ev.waitq) ||

2
debian/patches-rt/cond-resched-lock-rt-tweak.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: sched: Use the proper LOCK_OFFSET for cond_resched()
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 22:51:33 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
RT does not increment preempt count when a 'sleeping' spinlock is
locked. Update PREEMPT_LOCK_OFFSET for that case.

2
debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch vendored
View File

@@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Sun, 16 Oct 2016 05:11:54 +0200
Subject: [PATCH] connector/cn_proc: Protect send_msg() with a local lock
on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931
|in_atomic(): 1, irqs_disabled(): 0, pid: 31807, name: sleep

2
debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: cpu/hotplug: Implement CPU pinning
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 19 Jul 2017 17:31:20 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 9 Apr 2015 15:23:01 +0200
Subject: cpufreq: drop K8's driver from beeing selected
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Ralf posted a picture of a backtrace from

2
debian/patches-rt/cpumask-disable-offstack-on-rt.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 14 Dec 2011 01:03:49 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
There are "valid" GFP_ATOMIC allocations such as

2
debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch vendored
View File

@@ -1,7 +1,7 @@
From: Mike Galbraith <efault@gmx.de>
Date: Sun, 8 Jan 2017 09:32:25 +0100
Subject: [PATCH] cpuset: Convert callback_lock to raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The two commits below add up to a cpuset might_sleep() splat for RT:

2
debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 21 Feb 2014 17:24:04 +0100
Subject: crypto: Reduce preempt disabled regions, more algos
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Don Estabrook reported
| kernel: WARNING: CPU: 2 PID: 858 at kernel/sched/core.c:2428 migrate_disable+0xed/0x100()

2
debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch vendored
View File

@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 18:52:00 +0200
Subject: [PATCH] crypto: cryptd - add a lock instead
preempt_disable/local_bh_disable
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
cryptd has a per-CPU lock which protected with local_bh_disable() and
preempt_disable().

2
debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch vendored
View File

@@ -4,7 +4,7 @@ Subject: [PATCH] crypto: limit more FPU-enabled sections
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Those crypto drivers use SSE/AVX/… for their crypto work and in order to
do so in kernel they need to enable the "FPU" in kernel mode which

2
debian/patches-rt/debugobjects-rt.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: debugobjects: Make RT aware
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:41:35 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Avoid filling the pool / allocating memory with irqs off().

269
debian/patches-rt/dma-buf-Use-seqlock_t-instread-disabling-preemption.patch vendored Normal file
View File

@@ -0,0 +1,269 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 14 Aug 2019 16:38:43 +0200
Subject: [PATCH] dma-buf: Use seqlock_t instread disabling preemption
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
"dma reservation" disables preemption while acquiring the write access
for "seqcount" and then may acquire a spinlock_t.
Replace the seqcount with a seqlock_t which provides seqcount like
semantic and lock for writer.
Link: https://lkml.kernel.org/r/f410b429-db86-f81c-7c67-f563fa808b62@free.fr
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/dma-buf/dma-buf.c | 8 ++--
drivers/dma-buf/reservation.c | 40 ++++++++---------------
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 6 +--
drivers/gpu/drm/i915/i915_gem.c | 10 ++---
include/linux/reservation.h | 4 +-
5 files changed, 28 insertions(+), 40 deletions(-)
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -168,7 +168,7 @@ static __poll_t dma_buf_poll(struct file
return 0;
retry:
- seq = read_seqcount_begin(&resv->seq);
+ seq = read_seqbegin(&resv->seq);
rcu_read_lock();
fobj = rcu_dereference(resv->fence);
@@ -177,7 +177,7 @@ static __poll_t dma_buf_poll(struct file
else
shared_count = 0;
fence_excl = rcu_dereference(resv->fence_excl);
- if (read_seqcount_retry(&resv->seq, seq)) {
+ if (read_seqretry(&resv->seq, seq)) {
rcu_read_unlock();
goto retry;
}
@@ -1034,12 +1034,12 @@ static int dma_buf_debug_show(struct seq
robj = buf_obj->resv;
while (true) {
- seq = read_seqcount_begin(&robj->seq);
+ seq = read_seqbegin(&robj->seq);
rcu_read_lock();
fobj = rcu_dereference(robj->fence);
shared_count = fobj ? fobj->shared_count : 0;
fence = rcu_dereference(robj->fence_excl);
- if (!read_seqcount_retry(&robj->seq, seq))
+ if (!read_seqretry(&robj->seq, seq))
break;
rcu_read_unlock();
}
--- a/drivers/dma-buf/reservation.c
+++ b/drivers/dma-buf/reservation.c
@@ -110,15 +110,13 @@ int reservation_object_reserve_shared(st
new->shared_count = j;
new->shared_max = max;
- preempt_disable();
- write_seqcount_begin(&obj->seq);
+ write_seqlock(&obj->seq);
/*
* RCU_INIT_POINTER can be used here,
* seqcount provides the necessary barriers
*/
RCU_INIT_POINTER(obj->fence, new);
- write_seqcount_end(&obj->seq);
- preempt_enable();
+ write_sequnlock(&obj->seq);
if (!old)
return 0;
@@ -158,8 +156,7 @@ void reservation_object_add_shared_fence
fobj = reservation_object_get_list(obj);
count = fobj->shared_count;
- preempt_disable();
- write_seqcount_begin(&obj->seq);
+ write_seqlock(&obj->seq);
for (i = 0; i < count; ++i) {
struct dma_fence *old_fence;
@@ -181,8 +178,7 @@ void reservation_object_add_shared_fence
/* pointer update must be visible before we extend the shared_count */
smp_store_mb(fobj->shared_count, count);
- write_seqcount_end(&obj->seq);
- preempt_enable();
+ write_sequnlock(&obj->seq);
}
EXPORT_SYMBOL(reservation_object_add_shared_fence);
@@ -209,14 +205,11 @@ void reservation_object_add_excl_fence(s
if (fence)
dma_fence_get(fence);
- preempt_disable();
- write_seqcount_begin(&obj->seq);
- /* write_seqcount_begin provides the necessary memory barrier */
+ write_seqlock(&obj->seq);
RCU_INIT_POINTER(obj->fence_excl, fence);
if (old)
old->shared_count = 0;
- write_seqcount_end(&obj->seq);
- preempt_enable();
+ write_sequnlock(&obj->seq);
/* inplace update, no shared fences */
while (i--)
@@ -298,13 +291,10 @@ int reservation_object_copy_fences(struc
src_list = reservation_object_get_list(dst);
old = reservation_object_get_excl(dst);
- preempt_disable();
- write_seqcount_begin(&dst->seq);
- /* write_seqcount_begin provides the necessary memory barrier */
+ write_seqlock(&dst->seq);
RCU_INIT_POINTER(dst->fence_excl, new);
RCU_INIT_POINTER(dst->fence, dst_list);
- write_seqcount_end(&dst->seq);
- preempt_enable();
+ write_sequnlock(&dst->seq);
if (src_list)
kfree_rcu(src_list, rcu);
@@ -345,7 +335,7 @@ int reservation_object_get_fences_rcu(st
shared_count = i = 0;
rcu_read_lock();
- seq = read_seqcount_begin(&obj->seq);
+ seq = read_seqbegin(&obj->seq);
fence_excl = rcu_dereference(obj->fence_excl);
if (fence_excl && !dma_fence_get_rcu(fence_excl))
@@ -394,7 +384,7 @@ int reservation_object_get_fences_rcu(st
}
}
- if (i != shared_count || read_seqcount_retry(&obj->seq, seq)) {
+ if (i != shared_count || read_seqretry(&obj->seq, seq)) {
while (i--)
dma_fence_put(shared[i]);
dma_fence_put(fence_excl);
@@ -443,7 +433,7 @@ long reservation_object_wait_timeout_rcu
retry:
shared_count = 0;
- seq = read_seqcount_begin(&obj->seq);
+ seq = read_seqbegin(&obj->seq);
rcu_read_lock();
i = -1;
@@ -490,7 +480,7 @@ long reservation_object_wait_timeout_rcu
rcu_read_unlock();
if (fence) {
- if (read_seqcount_retry(&obj->seq, seq)) {
+ if (read_seqretry(&obj->seq, seq)) {
dma_fence_put(fence);
goto retry;
}
@@ -546,7 +536,7 @@ bool reservation_object_test_signaled_rc
retry:
ret = true;
shared_count = 0;
- seq = read_seqcount_begin(&obj->seq);
+ seq = read_seqbegin(&obj->seq);
if (test_all) {
unsigned i;
@@ -567,7 +557,7 @@ bool reservation_object_test_signaled_rc
break;
}
- if (read_seqcount_retry(&obj->seq, seq))
+ if (read_seqretry(&obj->seq, seq))
goto retry;
}
@@ -580,7 +570,7 @@ bool reservation_object_test_signaled_rc
if (ret < 0)
goto retry;
- if (read_seqcount_retry(&obj->seq, seq))
+ if (read_seqretry(&obj->seq, seq))
goto retry;
}
}
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -250,11 +250,9 @@ static int amdgpu_amdkfd_remove_eviction
new->shared_count = k;
/* Install the new fence list, seqcount provides the barriers */
- preempt_disable();
- write_seqcount_begin(&resv->seq);
+ write_seqlock(&resv->seq);
RCU_INIT_POINTER(resv->fence, new);
- write_seqcount_end(&resv->seq);
- preempt_enable();
+ write_sequnlock(&resv->seq);
/* Drop the references to the removed fences or move them to ef_list */
for (i = j, k = 0; i < old->shared_count; ++i) {
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -449,7 +449,7 @@ i915_gem_object_wait_reservation(struct
unsigned int flags,
long timeout)
{
- unsigned int seq = __read_seqcount_begin(&resv->seq);
+ unsigned int seq = read_seqbegin(&resv->seq);
struct dma_fence *excl;
bool prune_fences = false;
@@ -500,9 +500,9 @@ i915_gem_object_wait_reservation(struct
* signaled and that the reservation object has not been changed (i.e.
* no new fences have been added).
*/
- if (prune_fences && !__read_seqcount_retry(&resv->seq, seq)) {
+ if (prune_fences && !read_seqretry(&resv->seq, seq)) {
if (reservation_object_trylock(resv)) {
- if (!__read_seqcount_retry(&resv->seq, seq))
+ if (!read_seqretry(&resv->seq, seq))
reservation_object_add_excl_fence(resv, NULL);
reservation_object_unlock(resv);
}
@@ -3943,7 +3943,7 @@ i915_gem_busy_ioctl(struct drm_device *d
*
*/
retry:
- seq = raw_read_seqcount(&obj->resv->seq);
+ seq = read_seqbegin(&obj->resv->seq);
/* Translate the exclusive fence to the READ *and* WRITE engine */
args->busy = busy_check_writer(rcu_dereference(obj->resv->fence_excl));
@@ -3961,7 +3961,7 @@ i915_gem_busy_ioctl(struct drm_device *d
}
}
- if (args->busy && read_seqcount_retry(&obj->resv->seq, seq))
+ if (args->busy && read_seqretry(&obj->resv->seq, seq))
goto retry;
err = 0;
--- a/include/linux/reservation.h
+++ b/include/linux/reservation.h
@@ -71,7 +71,7 @@ struct reservation_object_list {
*/
struct reservation_object {
struct ww_mutex lock;
- seqcount_t seq;
+ seqlock_t seq;
struct dma_fence __rcu *fence_excl;
struct reservation_object_list __rcu *fence;
@@ -90,7 +90,7 @@ reservation_object_init(struct reservati
{
ww_mutex_init(&obj->lock, &reservation_ww_class);
- __seqcount_init(&obj->seq, reservation_seqcount_string, &reservation_seqcount_class);
+ seqlock_init(&obj->seq);
RCU_INIT_POINTER(obj->fence, NULL);
RCU_INIT_POINTER(obj->fence_excl, NULL);
}

2
debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch vendored
View File

@@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Thu, 31 Mar 2016 04:08:28 +0200
Subject: [PATCH] drivers/block/zram: Replace bit spinlocks with rtmutex
for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
They're nondeterministic, and lead to ___might_sleep() splats in -rt.
OTOH, they're a lot less wasteful than an rtmutex per page.

2
debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: tty/serial/omap: Make the locking RT aware
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 28 Jul 2011 13:32:57 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The lock is a sleeping lock and local_irq_save() is not the
optimsation we are looking for. Redo it to make it work on -RT and

2
debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: tty/serial/pl011: Make the locking work on RT
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 08 Jan 2013 21:36:51 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The lock is a sleeping lock and local_irq_save() is not the optimsation
we are looking for. Redo it to make it work on -RT and non-RT.

2
debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch vendored
View File

@@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Thu, 20 Oct 2016 11:15:22 +0200
Subject: [PATCH] drivers/zram: Don't disable preemption in
zcomp_stream_get/put()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
In v4.7, the driver switched to percpu compression streams, disabling
preemption via get/put_cpu_ptr(). Use a per-zcomp_strm lock here. We

2
debian/patches-rt/drm-i915-Don-t-disable-interrupts-independently-of-t.patch vendored
View File

@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 10 Apr 2019 11:01:37 +0200
Subject: [PATCH] drm/i915: Don't disable interrupts independently of the
lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The locks (timeline->lock and rq->lock) need to be taken with disabled
interrupts. This is done in __retire_engine_request() by disabling the

2
debian/patches-rt/drm-i915-disable-tracing-on-RT.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 6 Dec 2018 09:52:20 +0100
Subject: [PATCH] drm/i915: disable tracing on -RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Luca Abeni reported this:
| BUG: scheduling while atomic: kworker/u8:2/15203/0x00000003

2
debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 19 Dec 2018 10:47:02 +0100
Subject: [PATCH] drm/i915: skip DRM_I915_LOW_LEVEL_TRACEPOINTS with NOTRACE
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The order of the header files is important. If this header file is
included after tracepoint.h was included then the NOTRACE here becomes a

2
debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch vendored
View File

@@ -1,7 +1,7 @@
Subject: drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end()
From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Sat, 27 Feb 2016 09:01:42 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
[ 8.014039] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:918

2
debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended
From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Sat, 27 Feb 2016 08:09:11 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
DRM folks identified the spots, so use them.

2
debian/patches-rt/efi-Allow-efi-runtime.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 15:06:10 +0200
Subject: [PATCH] efi: Allow efi=runtime
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
In case the option "efi=noruntime" is default at built-time, the user
could overwrite its sate by `efi=runtime' and allow it again.

2
debian/patches-rt/efi-Disable-runtime-services-on-RT.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 15:03:16 +0200
Subject: [PATCH] efi: Disable runtime services on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Based on meassurements the EFI functions get_variable /
get_next_variable take up to 2us which looks okay.

2
debian/patches-rt/epoll-use-get-cpu-light.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: fs/epoll: Do not disable preemption on RT
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 08 Jul 2011 16:35:35 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
ep_call_nested() takes a sleeping lock so we can't disable preemption.
The light version is enough since ep_call_nested() doesn't mind beeing

2
debian/patches-rt/fs-aio-simple-simple-work.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 16 Feb 2015 18:49:10 +0100
Subject: fs/aio: simple simple work
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768
|in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2

2
debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 13 Sep 2017 12:32:34 +0200
Subject: [PATCH] fs/dcache: bring back explicit INIT_HLIST_BL_HEAD init
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Commit 3d375d78593c ("mm: update callers to use HASH_ZERO flag") removed
INIT_HLIST_BL_HEAD and uses the ZERO flag instead for the init. However

2
debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 20 Oct 2017 11:29:53 +0200
Subject: [PATCH] fs/dcache: disable preemption on i_dir_seq's write side
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
i_dir_seq is an opencoded seqcounter. Based on the code it looks like we
could have two writers in parallel despite the fact that the d_lock is

2
debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch vendored
View File

@@ -1,7 +1,7 @@
Subject: fs: dcache: Use cpu_chill() in trylock loops
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 07 Mar 2012 21:00:34 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Use cpu_chill() instead of cpu_relax() to let the system

10
debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 14 Sep 2016 14:35:49 +0200
Subject: [PATCH] fs/dcache: use swait_queue instead of waitqueue
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
__d_lookup_done() invokes wake_up_all() while holding a hlist_bl_lock()
which disables preemption. As a workaround convert it to swait.
@@ -124,7 +124,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
return -ENOENT;
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -448,7 +448,7 @@ static
@@ -441,7 +441,7 @@ static
void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
{
struct qstr filename = QSTR_INIT(entry->name, entry->len);
@@ -133,7 +133,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
struct dentry *dentry;
struct dentry *alias;
struct inode *dir = d_inode(parent);
@@ -1570,7 +1570,7 @@ int nfs_atomic_open(struct inode *dir, s
@@ -1492,7 +1492,7 @@ int nfs_atomic_open(struct inode *dir, s
struct file *file, unsigned open_flags,
umode_t mode)
{
@@ -164,7 +164,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
spin_lock(&dentry->d_lock);
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1874,7 +1874,7 @@ bool proc_fill_cache(struct file *file,
@@ -1892,7 +1892,7 @@ bool proc_fill_cache(struct file *file,
child = d_hash_and_lookup(dir, &qname);
if (!child) {
@@ -175,7 +175,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
goto end_instantiate;
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -694,7 +694,7 @@ static bool proc_sys_fill_cache(struct f
@@ -698,7 +698,7 @@ static bool proc_sys_fill_cache(struct f
child = d_lookup(dir, &qname);
if (!child) {

2
debian/patches-rt/fs-jbd-replace-bh_state-lock.patch vendored
View File

@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Mar 2011 10:11:25 +0100
Subject: fs: jbd/jbd2: Make state lock and journal head lock rt safe
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
bit_spin_locks break under RT.

8
debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 15 Sep 2016 10:51:27 +0200
Subject: [PATCH] fs/nfs: turn rmdir_sem into a semaphore
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The RW semaphore had a reader side which used the _non_owner version
because it most likely took the reader lock in one thread and released it
@@ -22,7 +22,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1890,7 +1890,11 @@ int nfs_rmdir(struct inode *dir, struct
@@ -1812,7 +1812,11 @@ int nfs_rmdir(struct inode *dir, struct
trace_nfs_rmdir_enter(dir, dentry);
if (d_really_is_positive(dentry)) {
@@ -34,7 +34,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name);
/* Ensure the VFS deletes this inode */
switch (error) {
@@ -1900,7 +1904,11 @@ int nfs_rmdir(struct inode *dir, struct
@@ -1822,7 +1826,11 @@ int nfs_rmdir(struct inode *dir, struct
case -ENOENT:
nfs_dentry_handle_enoent(dentry);
}
@@ -48,7 +48,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
trace_nfs_rmdir_exit(dir, dentry, error);
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -2089,7 +2089,11 @@ static void init_once(void *foo)
@@ -2090,7 +2090,11 @@ static void init_once(void *foo)
atomic_long_set(&nfsi->nrequests, 0);
atomic_long_set(&nfsi->commit_info.ncommit, 0);
atomic_set(&nfsi->commit_info.rpcs_out, 0);

2
debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch vendored
View File

@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Mar 2011 09:18:52 +0100
Subject: buffer_head: Replace bh_uptodate_lock for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Wrap the bit_spin_lock calls into a separate inline and add the RT
replacements with a real spinlock.

2
debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch vendored
View File

@@ -1,7 +1,7 @@
From: Clark Williams <williams@redhat.com>
Date: Tue, 3 Jul 2018 13:34:30 -0500
Subject: [PATCH] fscache: initialize cookie hash table raw spinlocks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
The fscache cookie mechanism uses a hash table of hlist_bl_head structures. The
PREEMPT_RT patcheset adds a raw spinlock to this structure and so on PREEMPT_RT

2
debian/patches-rt/ftrace-Fix-trace-header-alignment.patch vendored
View File

@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Sun, 16 Oct 2016 05:08:30 +0200
Subject: [PATCH] ftrace: Fix trace header alignment
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Line up helper arrows to the right column.

2
debian/patches-rt/ftrace-migrate-disable-tracing.patch vendored
View File

@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:56:42 +0200
Subject: trace: Add migrate-disabled counter to tracing output
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches-rt/futex-Delay-deallocation-of-pi_state.patch vendored
View File

@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 26 Jun 2019 13:35:36 +0200
Subject: [PATCH] futex: Delay deallocation of pi_state
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
On -RT we can't invoke kfree() in a non-preemptible context.

2
debian/patches-rt/futex-Make-the-futex_hash_bucket-lock-raw.patch vendored
View File

@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 26 Jun 2019 11:59:44 +0200
Subject: [PATCH] futex: Make the futex_hash_bucket lock raw
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.9-rt3.tar.xz
Since commit 1a1fb985f2e2b ("futex: Handle early deadlock return
correctly") we can deadlock while we attempt to acquire the HB lock if

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