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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-12 18:46:07 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-12 18:46:07 +0200 |
| commit | 0c80bdfc9aa624b4a6c33c30ad11e81bf6407c36 (patch) | |
| tree | caea5044f1bd46b56c9894a23c629ef4bf93a5ce /kernel/sched/cputime.c | |
| parent | bfa54a793ba77ef696755b66f3ac4ed00c7d1248 (diff) | |
| parent | 7c626ce4bae1ac14f60076d00eafe71af30450ba (diff) | |
Merge 6.11-rc3 into driver-core-next
We need the driver core fixes in here as well to build on top of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sched/cputime.c')
| -rw-r--r-- | kernel/sched/cputime.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index a5e00293ae43..0bed0fa1acd9 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -582,6 +582,12 @@ void cputime_adjust(struct task_cputime *curr, struct prev_cputime *prev, } stime = mul_u64_u64_div_u64(stime, rtime, stime + utime); + /* + * Because mul_u64_u64_div_u64() can approximate on some + * achitectures; enforce the constraint that: a*b/(b+c) <= a. + */ + if (unlikely(stime > rtime)) + stime = rtime; update: /* |