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Commit d67e01e5 authored by Changbin Du's avatar Changbin Du Committed by Greg Kroah-Hartman
Browse files

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

[ Upstream commit ebaeab2fe87987cef28eb5ab174c42cd28594387 ]

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: default avatarChangbin Du <changbin.du@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 65c7e3c9

tools/vm/page-types.c

+1 −1
Original line number Diff line number Diff line
@@ -1329,7 +1329,7 @@ int main(int argc, char *argv[]) 
	if (opt_list && opt_list_mapcnt)

		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);



	if (opt_list && opt_pid)