Commit Graph

888315 Commits

Author SHA1 Message Date
Jan Kara
f550ee9b85 iomap: Do not create fake iter in iomap_dio_bio_actor()
iomap_dio_bio_actor() copies iter to a local variable and then limits it
to a file extent we have mapped. When IO is submitted,
iomap_dio_bio_actor() advances the original iter while the copied iter
is advanced inside bio_iov_iter_get_pages(). This logic is non-obvious
especially because both iters still point to same shared structures
(such as pipe info) so if iov_iter_advance() changes anything in the
shared structure, this scheme breaks. Let's just truncate and reexpand
the original iter as needed instead of playing games with copying iters
and keeping them in sync.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-11-26 09:28:47 -08:00
Linus Torvalds
cd4771f770 Merge branch 'x86-entry-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 syscall entry updates from Ingo Molnar:
 "These changes relate to the preparatory cleanup of syscall function
  type signatures - to fix indirect call mismatches with Control-Flow
  Integrity (CFI) checking.

  No change in behavior intended"

* 'x86-entry-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Use the correct function type for native_set_fixmap()
  syscalls/x86: Fix function types in COND_SYSCALL
  syscalls/x86: Use the correct function type for sys_ni_syscall
  syscalls/x86: Use COMPAT_SYSCALL_DEFINE0 for IA32 (rt_)sigreturn
  syscalls/x86: Wire up COMPAT_SYSCALL_DEFINE0
  syscalls/x86: Use the correct function type in SYSCALL_DEFINE0
2019-11-26 09:25:36 -08:00
Timothy Pearson
c38402fe6c amdgpu: Enable KFD on POWER systems
KFD has been verified to function on POWER systems (Talos II / Vega 64).
It should be available as a kernel configuration option on these systems.

Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-26 12:24:53 -05:00
Felix Kuehling
29a39c90ba drm/amdgpu: Optimize KFD page table reservation
Be less pessimistic about estimated page table use for KFD. Most
allocations use 2MB pages and therefore need less VRAM for page
tables. This allows more VRAM to be used for applications especially
on large systems with many GPUs and hundreds of GB of system memory.

Example: 8 GPUs with 32GB VRAM each + 256GB system memory = 512GB
Old page table reservation per GPU:  1GB
New page table reservation per GPU: 32MB

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: xinhui pan <xinhui.pan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-26 12:24:07 -05:00
Alex Deucher
dea8b90029 drm/amdgpu: flag vram lost on baco reset for VI/CIK
VI/CIK BACO was inflight when this fix landed for SOC15/NV.
Add the fix to VI/CIK as well.

Acked-by: Evan Quan <evan.quan@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-26 12:22:31 -05:00
Alex Deucher
a0c2a84dda MAINTAINERS: Drop Rex Zhu for amdgpu powerplay
No longer works on the driver.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-26 12:21:03 -05:00
John Clements
5985ebbe78 drm/amdgpu: Resolved offchip EEPROM I/O issue
Updated target I2C address

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-26 12:20:22 -05:00
Alex Deucher
946621691f drm/amd/display: add default clocks if not able to fetch them
dm_pp_get_clock_levels_by_type needs to add the default clocks
to the powerplay case as well.  This was accidently dropped.

Fixes: b3ea88fef3 ("drm/amd/powerplay: add get_clock_by_type interface for display")
Bug: https://gitlab.freedesktop.org/drm/amd/issues/906
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2019-11-26 12:19:08 -05:00
Israel Rukshin
52e6d8ed16 nvmet-loop: Avoid preallocating big SGL for data
nvme_loop_create_io_queues() preallocates a big buffer for the IO SGL based
on SG_CHUNK_SIZE.

Modern DMA engines are often capable of dealing with very big segments so
the SG_CHUNK_SIZE is often too big. SG_CHUNK_SIZE results in a static 4KB
SGL allocation per command.

If a controller has lots of deep queues, preallocation for the sg list can
consume substantial amounts of memory. For nvmet-loop, nr_hw_queues can be
128 and each queue's depth 128. This means the resulting preallocation
for the data SGL is 128*128*4K = 64MB per controller.

Switch to runtime allocation for SGL for lists longer than 2 entries. This
is the approach used by NVMe PCI so it should be reasonable for NVMeOF as
well. Runtime SGL allocation has always been the case for the legacy I/O
path so this is nothing new.

Tested-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2019-11-27 02:14:19 +09:00
Israel Rukshin
b1ae1a2389 nvme-fc: Avoid preallocating big SGL for data
nvme_fc_create_io_queues() preallocates a big buffer for the IO SGL based
on SG_CHUNK_SIZE.

Modern DMA engines are often capable of dealing with very big segments so
the SG_CHUNK_SIZE is often too big. SG_CHUNK_SIZE results in a static 4KB
SGL allocation per command.

If a controller has lots of deep queues, preallocation for the sg list can
consume substantial amounts of memory. For nvme-fc, nr_hw_queues can be
128 and each queue's depth 128. This means the resulting preallocation
for the data SGL is 128*128*4K = 64MB per controller.

Switch to runtime allocation for SGL for lists longer than 2 entries. This
is the approach used by NVMe PCI so it should be reasonable for NVMeOF as
well. Runtime SGL allocation has always been the case for the legacy I/O
path so this is nothing new.

Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2019-11-27 02:14:01 +09:00
Israel Rukshin
38e1800275 nvme-rdma: Avoid preallocating big SGL for data
nvme_rdma_alloc_tagset() preallocates a big buffer for the IO SGL based
on SG_CHUNK_SIZE.

Modern DMA engines are often capable of dealing with very big segments so
the SG_CHUNK_SIZE is often too big. SG_CHUNK_SIZE results in a static 4KB
SGL allocation per command.

If a controller has lots of deep queues, preallocation for the sg list can
consume substantial amounts of memory. For nvme-rdma, nr_hw_queues can be
128 and each queue's depth 128. This means the resulting preallocation
for the data SGL is 128*128*4K = 64MB per controller.

Switch to runtime allocation for SGL for lists longer than 2 entries. This
is the approach used by NVMe PCI so it should be reasonable for NVMeOF as
well. Runtime SGL allocation has always been the case for the legacy I/O
path so this is nothing new.

The preallocated small SGL depends on SG_CHAIN so if the ARCH doesn't
support SG_CHAIN, use only runtime allocation for the SGL.

We didn't notice of a performance degradation, since for small IOs we'll
use the inline SG and for the bigger IOs the allocation of a bigger SGL
from slab is fast enough.

Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2019-11-27 02:13:45 +09:00
Linus Torvalds
a25bbc2644 Merge branches 'x86-cpu-for-linus' and 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu and fpu updates from Ingo Molnar:

 - math-emu fixes

 - CPUID updates

 - sanity-check RDRAND output to see whether the CPU at least pretends
   to produce random data

 - various unaligned-access across cachelines fixes in preparation of
   hardware level split-lock detection

 - fix MAXSMP constraints to not allow !CPUMASK_OFFSTACK kernels with
   larger than 512 NR_CPUS

 - misc FPU related cleanups

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Align the x86_capability array to size of unsigned long
  x86/cpu: Align cpu_caps_cleared and cpu_caps_set to unsigned long
  x86/umip: Make the comments vendor-agnostic
  x86/Kconfig: Rename UMIP config parameter
  x86/Kconfig: Enforce limit of 512 CPUs with MAXSMP and no CPUMASK_OFFSTACK
  x86/cpufeatures: Add feature bit RDPRU on AMD
  x86/math-emu: Limit MATH_EMULATION to 486SX compatibles
  x86/math-emu: Check __copy_from_user() result
  x86/rdrand: Sanity-check RDRAND output

* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Use XFEATURE_FP/SSE enum values instead of hardcoded numbers
  x86/fpu: Shrink space allocated for xstate_comp_offsets
  x86/fpu: Update stale variable name in comment
2019-11-26 08:58:08 -08:00
Linus Torvalds
85fbf15bc9 Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar:
 "The main changes were:

   - Extend the boot protocol to allow future extensions without hitting
     the setup_header size limit.

   - Add quirk to devicetree systems to disable the RTC unless it's
     listed as a supported device.

   - Fix ld.lld linker pedantry"

* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot: Introduce setup_indirect
  x86/boot: Introduce kernel_info.setup_type_max
  x86/boot: Introduce kernel_info
  x86/init: Allow DT configured systems to disable RTC at boot time
  x86/realmode: Explicitly set entry point via ENTRY in linker script
2019-11-26 08:40:20 -08:00
Linus Torvalds
fd2615908d Merge branches 'core-objtool-for-linus', 'x86-cleanups-for-linus' and 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 objtool, cleanup, and apic updates from Ingo Molnar:
 "Objtool:

   - Fix a gawk 5.0 incompatibility in gen-insn-attr-x86.awk. Most
     distros are still on gawk 4.2.x.

  Cleanup:

   - Misc cleanups, plus the removal of obsolete code such as Calgary
     IOMMU support, which code hasn't seen any real testing in a long
     time and there's no known users left.

  apic:

   - Two changes: a cleanup and a fix for an (old) race for oneshot
     threaded IRQ handlers"

* 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/insn: Fix awk regexp warnings

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Remove unused asm/rio.h
  x86: Fix typos in comments
  x86/pci: Remove #ifdef __KERNEL__ guard from <asm/pci.h>
  x86/pci: Remove pci_64.h
  x86: Remove the calgary IOMMU driver
  x86/apic, x86/uprobes: Correct parameter names in kernel-doc comments
  x86/kdump: Remove the unused crash_copy_backup_region()
  x86/nmi: Remove stale EDAC include leftover

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ioapic: Rename misnamed functions
  x86/ioapic: Prevent inconsistent state when moving an interrupt
2019-11-26 08:21:54 -08:00
Alex Deucher
8218df93b7 ALSA: hda/hdmi - enable automatic runtime pm for AMD HDMI codecs by default
So that we can power down the GPU and audio to save power.

Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20191122214353.582899-5-alexander.deucher@amd.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-26 16:55:17 +01:00
Alex Deucher
73b1422bdf ALSA: hda/hdmi - enable runtime pm for newer AMD display audio
We are able to power down the GPU and audio via the GPU driver
so flag these asics as supporting runtime pm.

Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20191122214353.582899-4-alexander.deucher@amd.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-26 16:54:57 +01:00
Alex Deucher
8d68a87244 ALSA: hda/hdmi - Add new pci ids for AMD GPU display audio
These are needed so we can enable runtime pm in a subsequent
patch.

Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20191122214353.582899-3-alexander.deucher@amd.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-26 16:54:17 +01:00
Alex Deucher
586bc4aab8 ALSA: hda/hdmi - fix vgaswitcheroo detection for AMD
Only enable the vga_switcheroo logic on systems with the
ATPX ACPI method.  This logic is not needed for asics
that are not part of a PX (PowerXpress)/HG (Hybrid Graphics)
platform.

Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20191122214353.582899-2-alexander.deucher@amd.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-26 16:53:51 +01:00
Diego Calleja
484e0d2b11 dm: add dm-clone to the documentation index
Fixes: 7431b7835f ("dm: add clone target")
Signed-off-by: Diego Calleja <diegocg@gmail.com>
Signed-off-by: Nikos Tsironis <ntsironis@arrikto.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2019-11-26 10:33:50 -05:00
Mike Snitzer
dbaf971c9c dm mpath: remove harmful bio-based optimization
Removes the branching for edge-case where no SCSI device handler
exists.  The __map_bio_fast() method was far too limited, by only
selecting a new pathgroup or path IFF there was a path failure, fix this
be eliminating it in favor of __map_bio().  __map_bio()'s extra SCSI
device handler specific MPATHF_PG_INIT_REQUIRED test is not in the fast
path anyway.

This change restores full path selector functionality for bio-based
configurations that don't haave a SCSI device handler.  But it should be
noted that the path selectors do have an impact on performance for
certain networks that are extremely fast (and don't require frequent
switching).

Fixes: 8d47e65948 ("dm mpath: remove unnecessary NVMe branching in favor of scsi_dh checks")
Cc: stable@vger.kernel.org
Reported-by: Drew Hastings <dhastings@crucialwebhost.com>
Suggested-by: Martin Wilck <mwilck@suse.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2019-11-26 10:22:46 -05:00
Jiri Olsa
7b65e2034f perf tools: Allow to link with libbpf dynamicaly
Currently we support only static linking with kernel's libbpf
(tools/lib/bpf). This patch adds libbpf package detection and support to
link perf with it dynamically.

The libbpf package status is displayed with:

  $ make VF=1
  Auto-detecting system features:
  ...
  ...                        libbpf: [ on  ]

It's not checked by default, because it's quite new.  Once it's on most
distros we can switch it on.

For the same reason it's not added to the test-all check.

Perf does not need advanced version of libbpf, so we can check just for
the base bpf_object__open function.

Adding new compile variable to detect libbpf package and link bpf
dynamically:

  $ make LIBBPF_DYNAMIC=1
    ...
    LINK     perf
  $ ldd perf | grep bpf
    libbpf.so.0 => /lib64/libbpf.so.0 (0x00007f46818bc000)

If libbpf is not installed, build stops with:

  Makefile.config:486: *** Error: No libbpf devel library found,\
  please install libbpf-devel.  Stop.

Committer testing:

  $ make LIBBPF_DYNAMIC=1 -C tools/perf O=/tmp/build/perf
  make: Entering directory '/home/acme/git/perf/tools/perf'
    BUILD:   Doing 'make -j8' parallel build
  Makefile.config:493: *** Error: No libbpf devel library found, please install libbpf-devel.  Stop.
  make[1]: *** [Makefile.perf:225: sub-make] Error 2
  make: *** [Makefile:70: all] Error 2
  make: Leaving directory '/home/acme/git/perf/tools/perf'
  $

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Toke Høiland-Jørgensen <toke@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Andrii Nakryiko <andriin@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: netdev@vger.kernel.org
Link: http://lore.kernel.org/lkml/20191126121253.28253-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:17:45 -03:00
Arnaldo Carvalho de Melo
a5732681e0 perf tests: Rename tests/map_groups.c to tests/maps.c
One more step in mergint the maps and map_groups structs.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-bw6aagubqxc47m54k2maezfu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
6d38267cf9 perf tests: Rename thread-mg-share to thread-maps-share
One more step in merging 'struct maps' with 'struct map_groups'.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-naxsl3g4ou3fyxb8l8e0pn5e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
c54d241b35 perf maps: Rename map_groups.h to maps.h
One more step in the merge of 'struct maps' with 'struct map_groups'.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-9ibtn3vua76f934t7woyf26w@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
9a29ceee6b perf maps: Rename 'mg' variables to 'maps'
Continuing the merge of 'struct maps' with 'struct map_groups'.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-z8d14wrw393a0fbvmnk1bqd9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
f2eaea09d6 perf map_symbol: Rename ms->mg to ms->maps
One more step on the merge of 'struct maps' with 'struct map_groups'.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-61rra2wg392rhvdgw421wzpt@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
694520dfeb perf addr_location: Rename al->mg to al->maps
One more step on the merge of 'struct maps' with 'struct map_groups'.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-foo95pyyp3bhocbt7yd8qrvq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
fe87797dea perf thread: Rename thread->mg to thread->maps
One more step on the merge of 'struct maps' with 'struct map_groups'.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-69vcr8pubpym90skxhmbwhiw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
79b6bb73f8 perf maps: Merge 'struct maps' with 'struct map_groups'
And pick the shortest name: 'struct maps'.

The split existed because we used to have two groups of maps, one for
functions and one for variables, but that only complicated things,
sometimes we needed to figure out what was at some address and then had
to first try it on the functions group and if that failed, fall back to
the variables one.

That split is long gone, so for quite a while we had only one struct
maps per struct map_groups, simplify things by combining those structs.

First patch is the minimum needed to merge both, follow up patches will
rename 'thread->mg' to 'thread->maps', etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-hom6639ro7020o708trhxh59@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Adrian Hunter
9adab03488 x86/insn: perf tools: Add some more instructions to the new instructions test
Add to the "x86 instruction decoder - new instructions" test the following
instructions:

	v4fmaddps
	v4fmaddss
	v4fnmaddps
	v4fnmaddss
	vaesdec
	vaesdeclast
	vaesenc
	vaesenclast
	vcvtne2ps2bf16
	vcvtneps2bf16
	vdpbf16ps
	gf2p8affineinvqb
	vgf2p8affineinvqb
	gf2p8affineqb
	vgf2p8affineqb
	gf2p8mulb
	vgf2p8mulb
	vp2intersectd
	vp2intersectq
	vp4dpwssd
	vp4dpwssds
	vpclmulqdq
	vpcompressb
	vpcompressw
	vpdpbusd
	vpdpbusds
	vpdpwssd
	vpdpwssds
	vpexpandb
	vpexpandw
	vpopcntb
	vpopcntd
	vpopcntq
	vpopcntw
	vpshldd
	vpshldq
	vpshldvd
	vpshldvq
	vpshldvw
	vpshldw
	vpshrdd
	vpshrdq
	vpshrdvd
	vpshrdvq
	vpshrdvw
	vpshrdw
	vpshufbitqmb

For information about the instructions, refer Intel SDM May 2019
(325462-070US) and Intel Architecture Instruction Set Extensions May
2019 (319433-037).

Committer testing:

  $ perf test x86
  61: x86 rdpmc                                             : Ok
  64: x86 instruction decoder - new instructions            : Ok
  66: x86 bp modify                                         : Ok
  $

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Cc: x86@kernel.org
Link: http://lore.kernel.org/lkml/20191125125044.31879-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Adrian Hunter
af4933c121 x86/insn: Add some more Intel instructions to the opcode map
Add to the opcode map the following instructions:

	v4fmaddps
	v4fmaddss
	v4fnmaddps
	v4fnmaddss
	vaesdec
	vaesdeclast
	vaesenc
	vaesenclast
	vcvtne2ps2bf16
	vcvtneps2bf16
	vdpbf16ps
	gf2p8affineinvqb
	vgf2p8affineinvqb
	gf2p8affineqb
	vgf2p8affineqb
	gf2p8mulb
	vgf2p8mulb
	vp2intersectd
	vp2intersectq
	vp4dpwssd
	vp4dpwssds
	vpclmulqdq
	vpcompressb
	vpcompressw
	vpdpbusd
	vpdpbusds
	vpdpwssd
	vpdpwssds
	vpexpandb
	vpexpandw
	vpopcntb
	vpopcntd
	vpopcntq
	vpopcntw
	vpshldd
	vpshldq
	vpshldvd
	vpshldvq
	vpshldvw
	vpshldw
	vpshrdd
	vpshrdq
	vpshrdvd
	vpshrdvq
	vpshrdvw
	vpshrdw
	vpshufbitqmb

For information about the instructions, refer Intel SDM May 2019
(325462-070US) and Intel Architecture Instruction Set Extensions May
2019 (319433-037).

The instruction decoding can be tested using the perf tools' "x86
instruction decoder - new instructions" test e.g.

  $ perf test -v "new " 2>&1 | grep -i 'v4fmaddps'
  Decoded ok: 62 f2 7f 48 9a 20                   v4fmaddps (%eax),%zmm0,%zmm4
  Decoded ok: 62 f2 7f 48 9a a4 c8 78 56 34 12    v4fmaddps 0x12345678(%eax,%ecx,8),%zmm0,%zmm4
  Decoded ok: 62 f2 7f 48 9a 20                   v4fmaddps (%rax),%zmm0,%zmm4
  Decoded ok: 67 62 f2 7f 48 9a 20                v4fmaddps (%eax),%zmm0,%zmm4
  Decoded ok: 62 f2 7f 48 9a a4 c8 78 56 34 12    v4fmaddps 0x12345678(%rax,%rcx,8),%zmm0,%zmm4
  Decoded ok: 67 62 f2 7f 48 9a a4 c8 78 56 34 12 v4fmaddps 0x12345678(%eax,%ecx,8),%zmm0,%zmm4

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Cc: x86@kernel.org
Link: http://lore.kernel.org/lkml/20191125125044.31879-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
a82f15e39a perf map: Remove unused functions
At some point those stopped being used, prune them.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-p2k98mj3ff2uk1z95sbl5r6e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Arnaldo Carvalho de Melo
805fcbc4fb perf map: Remove needless struct forward declarations
At some point we may have needed that, not anymore.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-hnao13231bsl7xml5wn8h4iu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:45 -03:00
Arnaldo Carvalho de Melo
40df3897f0 perf map: Ditch leftover map__reloc_vmlinux() prototype
In 39b12f7812 ("perf tools: Make it possible to read object code from vmlinux")
the actual function was removed, but we forgot to remove the prototype,
fix it.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-35yy50cgpcx8cjorluwd5j53@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:45 -03:00
Arnaldo Carvalho de Melo
540a63ea30 perf script: Move map__fprintf_srccode() to near its only user
No need to have it elsewhere.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-8cw846pudpxo0xdkvi9qnvrh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:45 -03:00
Arnaldo Carvalho de Melo
2ea352d596 Merge remote-tracking branch 'torvalds/master' into perf/core
To pick up BPF changes we'll need.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:06:19 -03:00
Mauro Carvalho Chehab
0ca40f41d7 Merge branch 'patchwork' into v4l_for_linus
* patchwork: (360 commits)
  media: Revert "media: mtk-vcodec: Remove extra area allocation in an input buffer on encoding"
  media: hantro: Set H264 FIELDPIC_FLAG_E flag correctly
  media: hantro: Remove now unused H264 pic_size
  media: hantro: Use output buffer width and height for H264 decoding
  media: hantro: Reduce H264 extra space for motion vectors
  media: hantro: Fix H264 motion vector buffer offset
  media: ti-vpe: vpe: fix compatible to match bindings
  media: dt-bindings: media: ti-vpe: Document VPE driver
  media: zr364xx: remove redundant assigmnent to idx, clean up code
  media: Documentation: media: *_DEFAULT targets for subdevs
  media: hantro: Fix s_fmt for dynamic resolution changes
  media: i2c: Use the correct style for SPDX License Identifier
  media: siano: Use the correct style for SPDX License Identifier
  media: vicodec: media_device_cleanup was called too early
  media: vim2m: media_device_cleanup was called too early
  media: cedrus: Increase maximum supported size
  media: cedrus: Fix H264 4k support
  media: cedrus: Properly signal size in mode register
  media: v4l2-ctrl: Lock main_hdl on operations of requests_queued.
  media: si470x-i2c: add missed operations in remove
  ...
2019-11-26 14:37:47 +01:00
Wen Yang
8305e90a89 firmware: arm_scmi: Avoid double free in error flow
If device_register() fails, both put_device() and kfree() are called,
ending with a double free of the scmi_dev.

Calling kfree() is needed only when a failure happens between the
allocation of the scmi_dev and its registration, so move it to there
and remove it from the error flow.

Fixes: 46edb8d132 ("firmware: arm_scmi: provide the mandatory device release callback")
Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2019-11-26 10:50:30 +00:00
Dexuan Cui
877b911a5b PCI: hv: Avoid a kmemleak false positive caused by the hbus buffer
With the recent 59bb47985c ("mm, sl[aou]b: guarantee natural
alignment for kmalloc(power-of-two)"), kzalloc() is able to allocate
a 4KB buffer that is guaranteed to be 4KB-aligned. Here the size and
alignment of hbus is important because hbus's field
retarget_msi_interrupt_params must not cross a 4KB page boundary.

Here we prefer kzalloc to get_zeroed_page(), because a buffer
allocated by the latter is not tracked and scanned by kmemleak, and
hence kmemleak reports the pointer contained in the hbus buffer
(i.e. the hpdev struct, which is created in new_pcichild_device() and
is tracked by hbus->children) as memory leak (false positive).

If the kernel doesn't have 59bb47985c, get_zeroed_page() *must* be
used to allocate the hbus buffer and we can avoid the kmemleak false
positive by using kmemleak_alloc() and kmemleak_free() to ask
kmemleak to track and scan the hbus buffer.

Reported-by: Lili Deng <v-lide@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
2019-11-26 10:34:03 +00:00
Dexuan Cui
14ef39fddd PCI: hv: Change pci_protocol_version to per-hbus
A VM can have multiple Hyper-V hbus. It's incorrect to set the global
variable 'pci_protocol_version' when *every* hbus is initialized in
hv_pci_protocol_negotiation(). This is not an issue in practice since
every hbus should have the same value of hbus->protocol_version, but
we should make the variable per-hbus, so in case we have busses
with different protocol versions, the driver can still work correctly.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
2019-11-26 10:33:18 +00:00
Dexuan Cui
ac82fc8327 PCI: hv: Add hibernation support
Add suspend() and resume() functions so that Hyper-V virtual PCI devices
are handled properly when the VM hibernates and resumes from
hibernation.

Note that the suspend() function must make sure there are no pending
work items before calling vmbus_close(), since it runs in a process
context as a callback in dpm_suspend(). When it starts to run, the
channel callback hv_pci_onchannelcallback(), which runs in a tasklet
context, can be still running concurrently and scheduling new work items
onto hbus->wq in hv_pci_devices_present() and hv_pci_eject_device(), and
the work item handlers can access the vmbus channel, which can be being
closed by hv_pci_suspend(), e.g. the work item handler
pci_devices_present_work() -> new_pcichild_device() writes to the vmbus
channel.

To eliminate the race, hv_pci_suspend() disables the channel callback
tasklet, sets hbus->state to hv_pcibus_removing, and re-enables the
tasklet.  This way, when hv_pci_suspend() proceeds, it knows that no new
work item can be scheduled, and then it flushes hbus->wq and safely
closes the vmbus channel.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
2019-11-26 10:32:33 +00:00
Dexuan Cui
a8e37506e7 PCI: hv: Reorganize the code in preparation of hibernation
There is no functional change. This is just preparatory for a later
patch which adds the hibernation support for the pci-hyperv driver.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
2019-11-26 10:31:33 +00:00
Rafael J. Wysocki
782b59711e Merge branch 'acpi-mm'
* acpi-mm:
  ACPI: HMAT: use %u instead of %d to print u32 values
  ACPI: NUMA: HMAT: fix a section mismatch
  ACPI: HMAT: don't mix pxm and nid when setting memory target processor_pxm
  ACPI: NUMA: HMAT: Register "soft reserved" memory as an "hmem" device
  ACPI: NUMA: HMAT: Register HMAT at device_initcall level
  device-dax: Add a driver for "hmem" devices
  dax: Fix alloc_dax_region() compile warning
  lib: Uplevel the pmem "region" ida to a global allocator
  x86/efi: Add efi_fake_mem support for EFI_MEMORY_SP
  arm/efi: EFI soft reservation to memblock
  x86/efi: EFI soft reservation to E820 enumeration
  efi: Common enable/disable infrastructure for EFI soft reservation
  x86/efi: Push EFI_MEMMAP check into leaf routines
  efi: Enumerate EFI_MEMORY_SP
  ACPI: NUMA: Establish a new drivers/acpi/numa/ directory
2019-11-26 10:31:02 +01:00
Rafael J. Wysocki
995e2ef082 Merge branches 'acpi-utils', 'acpi-platform', 'acpi-video' and 'acpi-doc'
* acpi-utils:
  iommu/amd: Switch to use acpi_dev_hid_uid_match()
  mmc: sdhci-acpi: Switch to use acpi_dev_hid_uid_match()
  ACPI / LPSS: Switch to use acpi_dev_hid_uid_match()
  ACPI / utils: Introduce acpi_dev_hid_uid_match() helper
  ACPI / utils: Move acpi_dev_get_first_match_dev() under CONFIG_ACPI
  ACPI / utils: Describe function parameters in kernel-doc

* acpi-platform:
  ACPI: platform: Unregister stale platform devices
  ACPI: Always build evged in

* acpi-video:
  ACPI: video: update doc for acpi_video_bus_DOS()

* acpi-doc:
  ACPI: Documentation: Minor spelling fix in namespace.rst
2019-11-26 10:30:49 +01:00
Rafael J. Wysocki
1fca7e0e6f Merge branches 'acpi-ec', 'acpi-soc', 'acpi-pmic' and 'acpi-button'
* acpi-ec:
  ACPI: EC: add support for hardware-reduced systems
  ACPI: EC: tweak naming in preparation for GpioInt support

* acpi-soc:
  ACPI: LPSS: Add dmi quirk for skipping _DEP check for some device-links
  ACPI: LPSS: Add LNXVIDEO -> BYT I2C1 to lpss_device_links
  ACPI: LPSS: Add LNXVIDEO -> BYT I2C7 to lpss_device_links

* acpi-pmic:
  ACPI / PMIC: Add Cherry Trail Crystal Cove PMIC OpRegion driver
  ACPI / PMIC: Add byt prefix to Crystal Cove PMIC OpRegion driver
  ACPI / PMIC: Do not register handlers for unhandled OpRegions

* acpi-button:
  ACPI: button: Remove unused acpi_lid_notifier_[un]register() functions
  ACPI: button: Add DMI quirk for Asus T200TA
  ACPI: button: Add DMI quirk for Medion Akoya E2215T
  ACPI: button: Turn lid_blacklst DMI table into a generic quirk table
  ACPI: button: Allow disabling LID support with the lid_init_state module option
  ACPI: button: Refactor lid_init_state module parsing code
2019-11-26 10:30:12 +01:00
Rafael J. Wysocki
713608a30b Merge branch 'acpica'
* acpica:
  ACPICA: Update version to 20191018
  ACPICA: debugger: remove leading whitespaces when converting a string to a buffer
  ACPICA: acpiexec: initialize all simple types and field units from user input
  ACPICA: debugger: add field unit support for acpi_db_get_next_token
  ACPICA: debugger: surround field unit output with braces '{'
  ACPICA: debugger: add command to dump all fields of particular subtype
  ACPICA: utilities: add flag to only display data when dumping buffers
  ACPICA: make acpi_load_table() return table index
  ACPICA: Add new external interface, acpi_unload_table()
  ACPICA: More Clang changes
  ACPICA: Win OSL: Replace get_tick_count with get_tick_count64
  ACPICA: Results from Clang
2019-11-26 10:29:54 +01:00
Rafael J. Wysocki
e350b60f4e Merge branches 'pm-avs', 'pm-docs' and 'pm-tools'
* pm-avs:
  ARM: OMAP2+: SmartReflex: add omap_sr_pdata definition
  power: avs: smartreflex: Remove superfluous cast in debugfs_create_file() call

* pm-docs:
  PM: Wrap documentation to fit in 80 columns

* pm-tools:
  cpupower: ToDo: Update ToDo with ideas for per_cpu_schedule handling
  cpupower: mperf_monitor: Update cpupower to use the RDPRU instruction
  cpupower: mperf_monitor: Introduce per_cpu_schedule flag
  cpupower: Move needs_root variable into a sub-struct
  cpupower : Handle set and info subcommands correctly
  pm-graph info added to MAINTAINERS
  tools/power/cpupower: Fix initializer override in hsw_ext_cstates
2019-11-26 10:28:34 +01:00
Rafael J. Wysocki
5a97aa5bbc Merge branches 'pm-sleep', 'pm-domains', 'pm-opp' and 'powercap'
* pm-sleep:
  PM / wakeirq: remove unnecessary parentheses
  PM / core: Clean up some function headers in power.h
  PM / hibernate: memory_bm_find_bit(): Tighten node optimisation

* pm-domains:
  PM / Domains: Convert to dev_to_genpd_safe() in genpd_syscore_switch()
  mmc: tmio: Avoid boilerplate code in ->runtime_suspend()
  PM / Domains: Implement the ->start() callback for genpd
  PM / Domains: Introduce dev_pm_domain_start()

* pm-opp:
  PM / OPP: Support adjusting OPP voltages at runtime

* powercap:
  powercap/intel_rapl: add support for Cometlake desktop
  powercap/intel_rapl: add support for CometLake Mobile
2019-11-26 10:27:49 +01:00
Rafael J. Wysocki
fa6a599eb3 Merge branch 'pm-devfreq'
* pm-devfreq: (26 commits)
  PM / devfreq: tegra30: Tune up MCCPU boost-down coefficient
  PM / devfreq: tegra30: Support variable polling interval
  PM / devfreq: Add new interrupt_driven flag for governors
  PM / devfreq: tegra30: Use kHz units for dependency threshold
  PM / devfreq: tegra30: Disable consecutive interrupts when appropriate
  PM / devfreq: tegra30: Don't enable already enabled consecutive interrupts
  PM / devfreq: tegra30: Include appropriate header
  PM / devfreq: tegra30: Constify structs
  PM / devfreq: tegra30: Don't enable consecutive-down interrupt on startup
  PM / devfreq: tegra30: Reset boosting on startup
  PM / devfreq: tegra30: Move clk-notifier's registration to governor's start
  PM / devfreq: tegra30: Use CPUFreq notifier
  PM / devfreq: tegra30: Use kHz units uniformly in the code
  PM / devfreq: tegra30: Fix integer overflow on CPU's freq max out
  PM / devfreq: tegra30: Drop write-barrier
  PM / devfreq: tegra30: Handle possible round-rate error
  PM / devfreq: tegra30: Keep interrupt disabled while governor is stopped
  PM / devfreq: tegra30: Change irq type to unsigned int
  PM / devfreq: exynos-ppmu: remove useless assignment
  PM / devfreq: Lock devfreq in trans_stat_show
  ...
2019-11-26 10:27:17 +01:00
Rafael J. Wysocki
c48b90f84a Merge branch 'pm-cpufreq'
* pm-cpufreq: (23 commits)
  cpufreq: Register drivers only after CPU devices have been registered
  cpufreq: Add NULL checks to show() and store() methods of cpufreq
  cpufreq: intel_pstate: Fix plain int as pointer warning from sparse
  cpufreq: sun50i: Fix CPU speed bin detection
  cpufreq: powernv: fix stack bloat and hard limit on number of CPUs
  cpufreq: Clarify the comment in cpufreq_set_policy()
  cpufreq: vexpress-spc: find and skip duplicates when merging frequencies
  cpufreq: vexpress-spc: use macros instead of hardcoded values for cluster ids
  cpufreq: s3c64xx: Remove pointless NULL check in s3c64xx_cpufreq_driver_init
  cpufreq: imx-cpufreq-dt: Correct i.MX8MN's default speed grade value
  cpufreq: vexpress-spc: fix some coding style issues
  cpufreq: vexpress-spc: remove lots of debug messages
  cpufreq: vexpress-spc: drop unnessary cpufreq_arm_bL_ops abstraction
  cpufreq: merge arm_big_little and vexpress-spc
  cpufreq: scpi: remove stale/outdated comment about the driver
  ARM: dts: Add OPP-V2 table for AM3517
  cpufreq: ti-cpufreq: Add support for AM3517
  ARM: dts: omap36xx: using OPP1G needs to control the abb_ldo
  cpufreq: ti-cpufreq: omap36xx use "cpu0","vbb" if run in multi_regulator mode
  ARM: dts: omap3: bulk convert compatible to be explicitly ti,omap3430 or ti,omap3630 or ti,am3517
  ...
2019-11-26 10:27:01 +01:00