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Prakash Gupta 5f48f0bd4e mm, page_owner: skip unnecessary stack_trace entries
The page_owner stacktrace always begin as follows:

  [<ffffff987bfd48f4>] save_stack+0x40/0xc8
  [<ffffff987bfd4da8>] __set_page_owner+0x3c/0x6c

These two entries do not provide any useful information and limits the
available stacktrace depth.  The page_owner stacktrace was skipping
caller function from stack entries but this was missed with commit
f2ca0b5571 ("mm/page_owner: use stackdepot to store stacktrace")

Example page_owner entry after the patch:

  Page allocated via order 0, mask 0x8(ffffff80085fb714)
  PFN 654411 type Movable Block 639 type CMA Flags 0x0(ffffffbe5c7f12c0)
  [<ffffff9b64989c14>] post_alloc_hook+0x70/0x80
  ...
  [<ffffff9b651216e8>] msm_comm_try_state+0x5f8/0x14f4
  [<ffffff9b6512486c>] msm_vidc_open+0x5e4/0x7d0
  [<ffffff9b65113674>] msm_v4l2_open+0xa8/0x224

Link: http://lkml.kernel.org/r/1504078343-28754-2-git-send-email-guptap@codeaurora.org
Fixes: f2ca0b5571 ("mm/page_owner: use stackdepot to store stacktrace")
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:16 -07:00
arch arm64: stacktrace: avoid listing stacktrace functions in stacktrace 2017-09-13 18:53:16 -07:00
block block: directly insert blk-mq request from blk_insert_cloned_request() 2017-09-11 16:43:57 -06:00
certs modsign: add markers to endif-statements in certs/Makefile 2017-07-14 11:01:37 +10:00
crypto crypto: af_alg - get_page upon reassignment to TX SGL 2017-08-22 15:03:27 +08:00
Documentation The diff is dominated by the Allwinner A10/A20 SoCs getting converted to 2017-09-13 11:04:14 -07:00
drivers mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
firmware firmware/Makefile: force recompilation if makefile changes 2017-05-08 17:15:10 -07:00
fs mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
include mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
init init/main.c: extract early boot entropy from the passed cmdline 2017-09-08 18:26:50 -07:00
ipc ipc: optimize semget/shmget/msgget for lots of keys 2017-09-08 18:26:51 -07:00
kernel mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
lib mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
mm mm, page_owner: skip unnecessary stack_trace entries 2017-09-13 18:53:16 -07:00
net The highlights include: 2017-09-12 20:03:53 -07:00
samples media updates for v4.14-rc1 2017-09-07 12:53:14 -07:00
scripts Modules updates for v4.14 2017-09-13 11:28:19 -07:00
security selinux/stable-4.14 PR 20170831 2017-09-12 13:21:00 -07:00
sound The diff is dominated by the Allwinner A10/A20 SoCs getting converted to 2017-09-13 11:04:14 -07:00
tools mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
usr ramfs: clarify help text that compression applies to ramfs as well as legacy ramdisk. 2017-07-06 16:24:30 -07:00
virt First batch of KVM changes for 4.14 2017-09-08 15:18:36 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore kbuild: Add support to generate LLVM assembly files 2017-04-25 08:13:52 +09:00
.mailmap power supply and reset changes for the v4.12 series (part 2) 2017-05-12 12:02:21 -07:00
COPYING
CREDITS selinux/stable-4.14 PR 20170831 2017-09-12 13:21:00 -07:00
Kbuild kbuild: Consolidate header generation from ASM offset information 2017-04-13 05:43:37 +09:00
Kconfig kbuild: migrate all arch to the kconfig mainmenu upgrade 2010-09-19 22:54:11 -04:00
MAINTAINERS Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-09-13 11:56:16 -07:00
Makefile Merge branch 'docs-next' of git://git.lwn.net/linux 2017-09-03 21:07:29 -07:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.