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tools/vm/page-types: remove dependency on opt_file for idle page tracking 

BugLink: https://bugs.launchpad.net/bugs/1950009

[ Upstream commit ebaeab2fe8 ]

Idle page tracking can also be used for process address space, not only
file mappings.

Without this change, using with '-i' option for process address space
encounters below errors reported.

  $ sudo ./page-types -p $(pidof bash) -i
  mark page idle: Bad file descriptor
  mark page idle: Bad file descriptor
  mark page idle: Bad file descriptor
  mark page idle: Bad file descriptor
  ...

Link: https://lkml.kernel.org/r/20210917032826.10669-1-changbin.du@gmail.com
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Changbin Du 2021-09-24 15:43:41 -07:00 committed by Stefan Bader
parent 65c7a0681e
commit cd58fcfc80
1 changed files with 1 additions and 1 deletions
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2
tools/vm/page-types.c
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@ -1329,7 +1329,7 @@ int main(int argc, char *argv[])
if (opt_list && opt_list_mapcnt) if (opt_list && opt_list_mapcnt)
kpagecount_fd = checked_open(PROC_KPAGECOUNT, O_RDONLY); kpagecount_fd = checked_open(PROC_KPAGECOUNT, O_RDONLY);
if (opt_mark_idle && opt_file) if (opt_mark_idle)
page_idle_fd = checked_open(SYS_KERNEL_MM_PAGE_IDLE, O_RDWR); page_idle_fd = checked_open(SYS_KERNEL_MM_PAGE_IDLE, O_RDWR);
if (opt_list && opt_pid) if (opt_list && opt_pid)