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4.9.187-45
linux/arch/arm/kernel
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tao zeng 3cb9b59d7a mm: optimize thread stack usage on ARMv7 [1/1] 
PD#SWPL-2681

Problem:
Kernel stack usage is large when running many tasks.

Solution:
Map kernel stack to module space and handle page-fault
for stack fault. This can save about 50% memory of stack
usage

Verify:
p212

Change-Id: Ie894bc8f00cb525ddf8ac63c6d99d9c6e937fdc0
Signed-off-by: tao zeng <tao.zeng@amlogic.com>

Conflicts:
	arch/arm/include/asm/memory.h
	arch/arm/include/asm/thread_info.h
	arch/arm/kernel/entry-armv.S
	arch/arm/kernel/unwind.c
	drivers/amlogic/memory_ext/Kconfig
	drivers/amlogic/memory_ext/vmap_stack.c
2019-07-23 17:52:49 +09:00
..
.gitignore
…
arch_timer.c
…
armksyms.c
kasan: bring up KASAN for 32bit os [2/2]
2019-07-23 17:52:49 +09:00
asm-offsets.c
mm: optimize thread stack usage on ARMv7 [1/1]
2019-07-23 17:52:49 +09:00
atags_compat.c
…
atags_parse.c
…
atags_proc.c
…
atags.h
ARM: 8495/1: ATAGS: move save_atags() to arch/arm/include/asm/setup.h
2016-01-04 11:26:00 +00:00
bios32.c
Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next
2016-08-01 12:23:57 -05:00
bugs.c
ARM: clean up per-processor check_bugs method call
2019-02-20 10:18:27 +01:00
calls.S
ARM: wire up new pkey syscalls
2016-10-19 10:18:47 +01:00
cpuidle.c
perf: arm: enable pmuserenr [1/1]
2019-07-23 17:52:49 +09:00
crash_dump.c
…
debug.S
…
devtree.c
ARM: 8616/1: dt: Respect property size when parsing CPUs
2016-09-29 16:57:43 +01:00
dma-isa.c
…
dma.c
…
early_printk.c
…
efi.c
ARM/efi: Apply strict permissions for UEFI Runtime Services regions
2016-04-28 11:33:53 +02:00
elf.c
…
entry-armv.S
debug: fail to show active cpu stacks [1/1]
2019-07-23 17:52:49 +09:00
entry-common.S
ARM: 8781/1: Fix Thumb-2 syscall return for binutils 2.29+
2019-03-13 14:05:01 -07:00
entry-ftrace.S
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
entry-header.S
mm: optimize thread stack usage on ARMv7 [1/1]
2019-07-23 17:52:49 +09:00
entry-v7m.S
ARM: rename S_FRAME_SIZE to PT_REGS_SIZE
2016-06-22 19:54:28 +01:00
fiq.c
…
fiqasm.S
…
ftrace.c
ARM: 8668/1: ftrace: Fix dynamic ftrace with DEBUG_RODATA and !FRAME_POINTER
2018-03-24 11:00:11 +01:00
head-common.S
kasan: bring up KASAN for 32bit os [2/2]
2019-07-23 17:52:49 +09:00
head-nommu.S
ARM: 8607/1: V7M: Wire up caches for V7M processors with cache support.
2016-09-06 15:51:08 +01:00
head.S
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
hibernate.c
ARM: use virt_to_idmap() for soft_restart()
2016-02-08 15:48:32 +00:00
hw_breakpoint.c
watchpoint: add watch point driver for cpu [1/1]
2019-07-23 17:52:49 +09:00
hyp-stub.S
ARM: 8600/1: Enforce some NS-SVC initialisation
2016-08-23 10:08:33 +01:00
insn.c
…
io.c
…
irq.c
ARM: 8824/1: fix a migrating irq bug when hotplug cpu
2019-03-23 13:19:42 +01:00
isa.c
…
iwmmxt.S
…
jump_label.c
jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}
2015-08-03 11:34:12 +02:00
kgdb.c
ANDROID: ARM: kgdb: ignore breakpoint instructions from user mode
2017-01-27 13:51:28 -08:00
machine_kexec.c
ARM: avoid Cortex-A9 livelock on tight dmb loops
2019-04-05 22:29:13 +02:00
Makefile
ARM: bugs: prepare processor bug infrastructure
2018-11-23 08:20:37 +01:00
module-plts.c
ARM: 8662/1: module: split core and init PLT sections
2017-05-25 15:44:44 +02:00
module.c
kasan: bring up KASAN for 32bit os [2/2]
2019-07-23 17:52:49 +09:00
module.lds
ARM: 8662/1: module: split core and init PLT sections
2017-05-25 15:44:44 +02:00
opcodes.c
…
paravirt.c
arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops
2015-12-21 14:40:54 +00:00
patch.c
ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t
2019-04-20 09:07:53 +02:00
perf_callchain.c
perf core: Add a 'nr' field to perf_event_callchain_context
2016-05-16 23:11:51 -03:00
perf_event_v6.c
arm: perf: factor arm_pmu core out to drivers
2015-07-31 15:01:14 +01:00
perf_event_v7.c
perf: arm: enable pmuserenr [1/1]
2019-07-23 17:52:49 +09:00
perf_event_xscale.c
arm: perf: factor arm_pmu core out to drivers
2015-07-31 15:01:14 +01:00
perf_regs.c
…
pj4-cp0.c
ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode
2016-01-04 11:12:10 +00:00
process.c
vmap: print pfn for register in vmalloc range [1/1]
2019-07-23 17:52:49 +09:00
psci_smp.c
ARM: use const and __initconst for smp_operations
2015-12-01 22:17:45 +01:00
ptrace.c
ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset write
2017-02-14 15:25:35 -08:00
reboot.c
ANDROID: ARM: add option to flush console before reboot
2017-01-27 13:52:08 -08:00
reboot.h
…
relocate_kernel.S
…
return_address.c
…
setup.c
kasan: bring up KASAN for 32bit os [2/2]
2019-07-23 17:52:49 +09:00
signal.c
ARM: 8793/1: signal: replace __put_user_error with __put_user
2019-02-20 10:18:25 +01:00
sigreturn_codes.S
…
sleep.S
idle: sm1: enable sm1 idle function [1/1]
2019-07-23 17:52:49 +09:00
smccc-call.S
arm: kernel: Add SMC structure parameter
2017-04-12 12:41:21 +02:00
smp_scu.c
…
smp_tlb.c
ARM: 8613/1: Fix the uaccess crash on PB11MPCore
2017-01-26 08:24:43 +01:00
smp_twd.c
arm/twd: Convert to hotplug state machine
2016-07-15 10:40:28 +02:00
smp.c
mm: optimize thread stack usage on ARMv7 [1/1]
2019-07-23 17:52:49 +09:00
stacktrace.c
…
suspend.c
mm: optimize thread stack usage on ARMv7 [1/1]
2019-07-23 17:52:49 +09:00
swp_emulate.c
ARM: 8475/1: SWP emulation: Restore original *data when failed
2015-12-15 11:51:42 +00:00
sys_arm.c
…
sys_oabi-compat.c
ARM: 8792/1: oabi-compat: copy oabi events using __copy_to_user()
2019-02-20 10:18:25 +01:00
tcm.c
…
thumbee.c
…
time.c
clocksource: cosmetic: Drop OF 'dependency' from symbols
2015-10-01 02:18:39 +02:00
topology.c
sched: EAS: sched_energy for arm on g12b [1/1]
2019-02-26 18:16:48 +09:00
traps.c
debug: show pfn info when undefined instr happens at user space [1/1]
2019-02-26 18:15:11 +09:00
unwind.c
mm: optimize thread stack usage on ARMv7 [1/1]
2019-07-23 17:52:49 +09:00
v7m.c
…
vdso.c
ARM: 8748/1: mm: Define vdso_start, vdso_end as array
2018-05-30 07:50:38 +02:00
vmlinux-xip.lds.S
ARM: Fix XIP kernels
2016-11-16 23:51:19 +00:00
vmlinux.lds.S
nmi_backtrace: generate one-line reports for idle cpus
2016-10-07 18:46:30 -07:00
xscale-cp0.c
ARM: make xscale iwmmxt code multiplatform aware
2015-12-01 21:44:24 +01:00