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author | Peter Zijlstra <peterz@infradead.org> | 2021-05-04 23:43:42 +0300 |
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committer | Peter Zijlstra <peterz@infradead.org> | 2021-05-12 12:43:24 +0300 |
commit | c5895d3f06cbb80ccb311f1dcb37074651030cb6 (patch) | |
tree | 08635c51d53ed97b16fa29b7f0bd5ad66bc1b687 /arch/arm64/kvm | |
parent | 4e29fb709885eda5f0d1fa3418e6ead01a64e46d (diff) | |
download | linux-c5895d3f06cbb80ccb311f1dcb37074651030cb6.tar.xz |
sched: Simplify sched_info_on()
The situation around sched_info is somewhat complicated, it is used by
sched_stats and delayacct and, indirectly, kvm.
If SCHEDSTATS=Y (but disabled by default) sched_info_on() is
unconditionally true -- this is the case for all distro kernel configs
I checked.
If for some reason SCHEDSTATS=N, but TASK_DELAY_ACCT=Y, then
sched_info_on() can return false when delayacct is disabled,
presumably because there would be no other users left; except kvm is.
Instead of complicating matters further by accurately accounting
sched_stat and kvm state, simply unconditionally enable when
SCHED_INFO=Y, matching the common distro case.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Link: https://lkml.kernel.org/r/20210505111525.121458839@infradead.org
Diffstat (limited to 'arch/arm64/kvm')
0 files changed, 0 insertions, 0 deletions