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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-21 05:38:10 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-21 05:38:10 +0000 |
| commit | 2e7b21ebb8f845570641035f8a7832d33d8e5135 (patch) | |
| tree | 3db92cd227f359a58c62582e954a78616c9a3426 /kernel/sched/cputime.c | |
| parent | Adding debian version 6.10.4-1. (diff) | |
| download | linux-2e7b21ebb8f845570641035f8a7832d33d8e5135.tar.xz linux-2e7b21ebb8f845570641035f8a7832d33d8e5135.zip | |
Merging upstream version 6.10.6.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.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 aa48b2ec87..4feef0d4e4 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: /* |