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| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2016-11-15 03:06:51 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-11-15 09:51:05 +0100 |
| commit | 40565b5aedd6d0ca88b7dfd3859d709d2f6f8cf9 (patch) | |
| tree | 5fc1766834a640d3ae404c463ba99c3194eba8c7 /kernel/fork.c | |
| parent | sched/cputime, powerpc: Remove cputime_to_scaled() (diff) | |
| download | linux-40565b5aedd6d0ca88b7dfd3859d709d2f6f8cf9.tar.xz linux-40565b5aedd6d0ca88b7dfd3859d709d2f6f8cf9.zip | |
sched/cputime, powerpc, s390: Make scaled cputime arch specific
Only s390 and powerpc have hardware facilities allowing to measure
cputimes scaled by frequency. On all other architectures
utimescaled/stimescaled are equal to utime/stime (however they are
accounted separately).
Remove {u,s}timescaled accounting on all architectures except
powerpc and s390, where those values are explicitly accounted
in the proper places.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161031162143.GB12646@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 997ac1d584f7..600e93b5e539 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1551,7 +1551,9 @@ static __latent_entropy struct task_struct *copy_process( init_sigpending(&p->pending); p->utime = p->stime = p->gtime = 0; +#ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME p->utimescaled = p->stimescaled = 0; +#endif prev_cputime_init(&p->prev_cputime); #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |