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| author | Oleg Nesterov <oleg@redhat.com> | 2023-09-09 19:25:54 +0200 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-15 10:48:18 -0400 |
| commit | e904c9a4834888cb2b37607d9571f49964f4603f (patch) | |
| tree | 6757ef6097c90df1185d3c9c169db5338fb7c9b9 /kernel | |
| parent | d5e38d6b84d6d21a4f8a4f555a0908b6d9ffe224 (diff) | |
| download | linux-stable-e904c9a4834888cb2b37607d9571f49964f4603f.tar.gz linux-stable-e904c9a4834888cb2b37607d9571f49964f4603f.tar.bz2 linux-stable-e904c9a4834888cb2b37607d9571f49964f4603f.zip | |
getrusage: add the "signal_struct *sig" local variable
[ Upstream commit c7ac8231ace9b07306d0299969e42073b189c70a ]
No functional changes, cleanup/preparation.
Link: https://lkml.kernel.org/r/20230909172554.GA20441@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Stable-dep-of: daa694e41375 ("getrusage: move thread_group_cputime_adjusted() outside of lock_task_sighand()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sys.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index e18bef5a8f9f..d0d4f4c58651 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1718,6 +1718,7 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) unsigned long flags; u64 tgutime, tgstime, utime, stime; unsigned long maxrss = 0; + struct signal_struct *sig = p->signal; memset((char *)r, 0, sizeof (*r)); utime = stime = 0; @@ -1725,7 +1726,7 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) if (who == RUSAGE_THREAD) { task_cputime_adjusted(current, &utime, &stime); accumulate_thread_rusage(p, r); - maxrss = p->signal->maxrss; + maxrss = sig->maxrss; goto out; } @@ -1735,15 +1736,15 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) switch (who) { case RUSAGE_BOTH: case RUSAGE_CHILDREN: - utime = p->signal->cutime; - stime = p->signal->cstime; - r->ru_nvcsw = p->signal->cnvcsw; - r->ru_nivcsw = p->signal->cnivcsw; - r->ru_minflt = p->signal->cmin_flt; - r->ru_majflt = p->signal->cmaj_flt; - r->ru_inblock = p->signal->cinblock; - r->ru_oublock = p->signal->coublock; - maxrss = p->signal->cmaxrss; + utime = sig->cutime; + stime = sig->cstime; + r->ru_nvcsw = sig->cnvcsw; + r->ru_nivcsw = sig->cnivcsw; + r->ru_minflt = sig->cmin_flt; + r->ru_majflt = sig->cmaj_flt; + r->ru_inblock = sig->cinblock; + r->ru_oublock = sig->coublock; + maxrss = sig->cmaxrss; if (who == RUSAGE_CHILDREN) break; @@ -1752,14 +1753,14 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) thread_group_cputime_adjusted(p, &tgutime, &tgstime); utime += tgutime; stime += tgstime; - r->ru_nvcsw += p->signal->nvcsw; - r->ru_nivcsw += p->signal->nivcsw; - r->ru_minflt += p->signal->min_flt; - r->ru_majflt += p->signal->maj_flt; - r->ru_inblock += p->signal->inblock; - r->ru_oublock += p->signal->oublock; - if (maxrss < p->signal->maxrss) - maxrss = p->signal->maxrss; + r->ru_nvcsw += sig->nvcsw; + r->ru_nivcsw += sig->nivcsw; + r->ru_minflt += sig->min_flt; + r->ru_majflt += sig->maj_flt; + r->ru_inblock += sig->inblock; + r->ru_oublock += sig->oublock; + if (maxrss < sig->maxrss) + maxrss = sig->maxrss; t = p; do { accumulate_thread_rusage(t, r); |