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authorSeongJae Park <[email protected]>2021-12-10 14:46:22 -0800
committerLinus Torvalds <[email protected]>2021-12-10 17:10:55 -0800
commite4779015fd5d2fb8390c258268addff24d6077c7 (patch)
tree41aa28f140744a31775dd0ec8625b6a3a82e7e05 /net/unix/af_unix.c
parent0c941cf30b913d4a684d3f8d9eee60e0daffdc79 (diff)
timers: implement usleep_idle_range()
Patch series "mm/damon: Fix fake /proc/loadavg reports", v3. This patchset fixes DAMON's fake load report issue. The first patch makes yet another variant of usleep_range() for this fix, and the second patch fixes the issue of DAMON by making it using the newly introduced function. This patch (of 2): Some kernel threads such as DAMON could need to repeatedly sleep in micro seconds level. Because usleep_range() sleeps in uninterruptible state, however, such threads would make /proc/loadavg reports fake load. To help such cases, this commit implements a variant of usleep_range() called usleep_idle_range(). It is same to usleep_range() but sets the state of the current task as TASK_IDLE while sleeping. Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: SeongJae Park <[email protected]> Suggested-by: Andrew Morton <[email protected]> Reviewed-by: Thomas Gleixner <[email protected]> Tested-by: Oleksandr Natalenko <[email protected]> Cc: John Stultz <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
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