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70e9274805
linux/mm/damon
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SeongJae Park 70e9274805 mm/damon/core: fix fake load reports due to uninterruptible sleeps 
Because DAMON sleeps in uninterruptible mode, /proc/loadavg reports fake
load while DAMON is turned on, though it is doing nothing.  This can
confuse users[1].  To avoid the case, this commit makes DAMON sleeps in
idle mode.

[1] https://lore.kernel.org/all/11868371.O9o76ZdvQC@natalenko.name/

Link: https://lkml.kernel.org/r/20211126145015.15862-3-sj@kernel.org
Fixes: 2224d84854 ("mm: introduce Data Access MONitor (DAMON)")
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: SeongJae Park <sj@kernel.org>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-10 17:10:55 -08:00
..
core-test.h mm/damon/core-test: fix wrong expectations for 'damon_split_regions_of()' 2021-10-28 17:18:55 -07:00
core.c mm/damon/core: fix fake load reports due to uninterruptible sleeps 2021-12-10 17:10:55 -08:00
dbgfs-test.h mm/damon: fix a few spelling mistakes in comments and a pr_debug message 2021-11-06 13:30:46 -07:00
dbgfs.c mm/damon/dbgfs: fix missed use of damon_dbgfs_lock 2021-11-20 10:35:54 -08:00
Kconfig mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM) 2021-11-06 13:30:46 -07:00
Makefile mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM) 2021-11-06 13:30:46 -07:00
paddr.c mm/damon/vaddr,paddr: support pageout prioritization 2021-11-06 13:30:45 -07:00
prmtv-common.c mm/damon/vaddr,paddr: support pageout prioritization 2021-11-06 13:30:45 -07:00
prmtv-common.h mm/damon/vaddr,paddr: support pageout prioritization 2021-11-06 13:30:45 -07:00
reclaim.c mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM) 2021-11-06 13:30:46 -07:00
vaddr-test.h mm/damon: fix a few spelling mistakes in comments and a pr_debug message 2021-11-06 13:30:46 -07:00
vaddr.c treewide: Add missing includes masked by cgroup -> bpf dependency 2021-12-03 10:58:13 -08:00