https://github.com/torvalds/linux
Revision 5f48f0bd4e368425db4424b9afd1bd251d32367a authored by Prakash Gupta on 13 September 2017, 23:28:35 UTC, committed by Linus Torvalds on 14 September 2017, 01:53:16 UTC
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 f2ca0b557107 ("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: f2ca0b557107 ("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>
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Tip revision: 5f48f0bd4e368425db4424b9afd1bd251d32367a authored by Prakash Gupta on 13 September 2017, 23:28:35 UTC
mm, page_owner: skip unnecessary stack_trace entries
mm, page_owner: skip unnecessary stack_trace entries
Tip revision: 5f48f0b
File | Mode | Size |
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Documentation | ||
arch | ||
block | ||
certs | ||
crypto | ||
drivers | ||
firmware | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.cocciconfig | -rw-r--r-- | 59 bytes |
.get_maintainer.ignore | -rw-r--r-- | 31 bytes |
.gitattributes | -rw-r--r-- | 30 bytes |
.gitignore | -rw-r--r-- | 1.3 KB |
.mailmap | -rw-r--r-- | 8.1 KB |
COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 96.1 KB |
Kbuild | -rw-r--r-- | 2.2 KB |
Kconfig | -rw-r--r-- | 252 bytes |
MAINTAINERS | -rw-r--r-- | 419.0 KB |
Makefile | -rw-r--r-- | 58.8 KB |
README | -rw-r--r-- | 722 bytes |
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