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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2017-01-31 04:09:19 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-20 09:51:32 +0200 |
| commit | dbf9a0532e028aacfed113995f32d93d4a388f04 (patch) | |
| tree | 1908224738d2bf4a3075fd7df3d43610978de2f9 /kernel/sched | |
| parent | 92811e27679945a0cef78288e3d45bc22f3ff86f (diff) | |
| download | linux-stable-dbf9a0532e028aacfed113995f32d93d4a388f04.tar.gz linux-stable-dbf9a0532e028aacfed113995f32d93d4a388f04.tar.bz2 linux-stable-dbf9a0532e028aacfed113995f32d93d4a388f04.zip | |
sched/cputime: Convert kcpustat to nsecs
commit 7fb1327ee9b92fca27662f9b9d60c7c3376d6c69 upstream.
Kernel CPU stats are stored in cputime_t which is an architecture
defined type, and hence a bit opaque and requiring accessors and mutators
for any operation.
Converting them to nsecs simplifies the code and is one step toward
the removal of cputime_t in the core code.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1485832191-26889-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[colona: minor conflict as 527b0a76f41d ("sched/cpuacct: Avoid %lld seq_printf
warning") is missing from v4.9]
Signed-off-by: Ivan Delalande <colona@arista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/cpuacct.c | 2 | ||||
| -rw-r--r-- | kernel/sched/cputime.c | 22 |
2 files changed, 12 insertions, 12 deletions
diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c index bc0b309c3f19..4c882791c10c 100644 --- a/kernel/sched/cpuacct.c +++ b/kernel/sched/cpuacct.c @@ -297,7 +297,7 @@ static int cpuacct_stats_show(struct seq_file *sf, void *v) for (stat = 0; stat < CPUACCT_STAT_NSTATS; stat++) { seq_printf(sf, "%s %lld\n", cpuacct_stat_desc[stat], - cputime64_to_clock_t(val[stat])); + nsec_to_clock_t(val[stat])); } return 0; diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 5ebee3164e64..c07f0cfea07e 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -75,9 +75,9 @@ static cputime_t irqtime_account_update(u64 irqtime, int idx, cputime_t maxtime) u64 *cpustat = kcpustat_this_cpu->cpustat; cputime_t irq_cputime; - irq_cputime = nsecs_to_cputime64(irqtime) - cpustat[idx]; + irq_cputime = nsecs_to_cputime64(irqtime - cpustat[idx]); irq_cputime = min(irq_cputime, maxtime); - cpustat[idx] += irq_cputime; + cpustat[idx] += cputime_to_nsecs(irq_cputime); return irq_cputime; } @@ -143,7 +143,7 @@ void account_user_time(struct task_struct *p, cputime_t cputime, index = (task_nice(p) > 0) ? CPUTIME_NICE : CPUTIME_USER; /* Add user time to cpustat. */ - task_group_account_field(p, index, (__force u64) cputime); + task_group_account_field(p, index, cputime_to_nsecs(cputime)); /* Account for user time used */ acct_account_cputime(p); @@ -168,11 +168,11 @@ static void account_guest_time(struct task_struct *p, cputime_t cputime, /* Add guest time to cpustat. */ if (task_nice(p) > 0) { - cpustat[CPUTIME_NICE] += (__force u64) cputime; - cpustat[CPUTIME_GUEST_NICE] += (__force u64) cputime; + cpustat[CPUTIME_NICE] += cputime_to_nsecs(cputime); + cpustat[CPUTIME_GUEST_NICE] += cputime_to_nsecs(cputime); } else { - cpustat[CPUTIME_USER] += (__force u64) cputime; - cpustat[CPUTIME_GUEST] += (__force u64) cputime; + cpustat[CPUTIME_USER] += cputime_to_nsecs(cputime); + cpustat[CPUTIME_GUEST] += cputime_to_nsecs(cputime); } } @@ -193,7 +193,7 @@ void __account_system_time(struct task_struct *p, cputime_t cputime, account_group_system_time(p, cputime); /* Add system time to cpustat. */ - task_group_account_field(p, index, (__force u64) cputime); + task_group_account_field(p, index, cputime_to_nsecs(cputime)); /* Account for system time used */ acct_account_cputime(p); @@ -234,7 +234,7 @@ void account_steal_time(cputime_t cputime) { u64 *cpustat = kcpustat_this_cpu->cpustat; - cpustat[CPUTIME_STEAL] += (__force u64) cputime; + cpustat[CPUTIME_STEAL] += cputime_to_nsecs(cputime); } /* @@ -247,9 +247,9 @@ void account_idle_time(cputime_t cputime) struct rq *rq = this_rq(); if (atomic_read(&rq->nr_iowait) > 0) - cpustat[CPUTIME_IOWAIT] += (__force u64) cputime; + cpustat[CPUTIME_IOWAIT] += cputime_to_nsecs(cputime); else - cpustat[CPUTIME_IDLE] += (__force u64) cputime; + cpustat[CPUTIME_IDLE] += cputime_to_nsecs(cputime); } /* |