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| author | Ken Chen <kenchen@google.com> | 2008-12-16 23:41:22 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-18 13:54:01 +0100 |
| commit | 9c2c48020ec0dd6ecd27e5a1298f73b40d85a595 (patch) | |
| tree | 1a44f56e18012120aff0969094eebd572deb2ea3 /fs/proc | |
| parent | e9515c3c9feecd74174c2998add0db51e02abb8d (diff) | |
| download | kernel-common-9c2c48020ec0dd6ecd27e5a1298f73b40d85a595.tar.gz kernel-common-9c2c48020ec0dd6ecd27e5a1298f73b40d85a595.tar.bz2 kernel-common-9c2c48020ec0dd6ecd27e5a1298f73b40d85a595.zip | |
schedstat: consolidate per-task cpu runtime stats
Impact: simplify code
When we turn on CONFIG_SCHEDSTATS, per-task cpu runtime is accumulated
twice. Once in task->se.sum_exec_runtime and once in sched_info.cpu_time.
These two stats are exactly the same.
Given that task->se.sum_exec_runtime is always accumulated by the core
scheduler, sched_info can reuse that data instead of duplicate the accounting.
Signed-off-by: Ken Chen <kenchen@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/base.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index d4677603c889..4d745bac768c 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -347,7 +347,7 @@ static int proc_pid_wchan(struct task_struct *task, char *buffer) static int proc_pid_schedstat(struct task_struct *task, char *buffer) { return sprintf(buffer, "%llu %llu %lu\n", - task->sched_info.cpu_time, + task->se.sum_exec_runtime, task->sched_info.run_delay, task->sched_info.pcount); } |