tao zeng 4d6ae43593 mm: optimize thread stack usage on arm64 [1/1] ...

PD#SWPL-1219

Problem:
On arm64, thread stack is 16KB for each task. If running task number
is large, this type of memory may over 40MB. It's a large amount on
small memory platform. But most case thread only use less 4KB stack.
It's waste of memory and we need optimize it.

Solution:
1. Pre-allocate a vmalloc address space for task stack;
2. Only map 1st page for stack and handle page fault in EL1
   when stack growth triggered exception;
3. handle stack switch for exception.

Verify:
p212

Change-Id: I47f511ccfa2868d982bc10a820ed6435b6d52ba9
Signed-off-by: tao zeng <tao.zeng@amlogic.com>

2018-12-17 14:52:05 +08:00

..

array.c

proc: Use underscores for SSBD in 'status'

2018-05-22 16:58:02 +02:00

base.c

Merge 4.9.104 into android-4.9

2018-05-30 13:19:56 +02:00

cmdline.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

consoles.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

cpuinfo.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

devices.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

fd.c

proc: unsigned file descriptors

2016-09-27 18:47:38 -04:00

fd.h

proc: unsigned file descriptors

2016-09-27 18:47:38 -04:00

generic.c

proc: Fix unbalanced hard link numbers

2017-05-25 15:44:37 +02:00

inode.c

fs: Replace CURRENT_TIME with current_time() for inode timestamps

2016-09-27 21:06:21 -04:00

internal.h

ANDROID: proc: Add /proc/uid directory

2018-04-03 11:15:30 -07:00

interrupts.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

Kconfig

ANDROID: proc: Add /proc/uid directory

2018-04-03 11:15:30 -07:00

kcore.c

vfs/proc/kcore, x86/mm/kcore: Fix SMAP fault when dumping vsyscall user page

2018-05-30 07:50:26 +02:00

kmsg.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

loadavg.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

Makefile

ANDROID: proc: Add /proc/uid directory

2018-04-03 11:15:30 -07:00

meminfo.c

mm: optimize thread stack usage on arm64 [1/1]

2018-12-17 14:52:05 +08:00

namespaces.c

switch all procfs directories ->iterate_shared()

2016-05-02 19:49:30 -04:00

nommu.c

vfs: add seq_file_path() helper

2015-06-23 18:01:07 -04:00

page.c

mm: rename _count, field of the struct page, to _refcount

2016-05-19 19:12:14 -07:00

proc_net.c

proc: make proc entries inherit ownership from parent

2016-08-14 21:07:20 -07:00

proc_sysctl.c

fs/proc/proc_sysctl.c: fix potential page fault while unregistering sysctl table

2018-05-30 07:50:40 +02:00

proc_tty.c

tty fix oops when rmmod 8250

2017-12-20 10:07:32 +01:00

root.c

ANDROID: proc: Add /proc/uid directory

2018-04-03 11:15:30 -07:00

self.c

fs: Replace CURRENT_TIME with current_time() for inode timestamps

2016-09-27 21:06:21 -04:00

softirqs.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

stat.c

seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char

2016-10-07 18:46:30 -07:00

task_mmu.c

Merge 4.9.34 into android-4.9

2017-06-27 10:43:56 +02:00

task_nommu.c

fs/proc: Stop trying to report thread stacks

2016-10-20 09:21:41 +02:00

thread_self.c

fs: Replace CURRENT_TIME with current_time() for inode timestamps

2016-09-27 21:06:21 -04:00

uid.c

ANDROID: proc: fix undefined behavior in proc_uid_base_readdir

2018-05-24 01:28:28 +00:00

uptime.c

cputime: Default implementation of nsecs -> cputime conversion

2014-03-13 15:56:43 +01:00

version.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

vmcore.c

crash_dump: Add vmcore_elf32_check_arch

2016-05-13 14:01:59 +02:00