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| author | Arjan van de Ven <arjan@linux.intel.com> | 2010-05-09 08:24:39 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-05-09 19:35:26 +0200 |
| commit | e0e37c200f1357db0dd986edb359c41c57d24f6e (patch) | |
| tree | 9f799889b2166528e4b264f3c58a52d1edbd4bdf | |
| parent | 8d63bf949e330588b80d30ca8f0a27a45297a9e9 (diff) | |
| download | linux-stable-e0e37c200f1357db0dd986edb359c41c57d24f6e.tar.gz linux-stable-e0e37c200f1357db0dd986edb359c41c57d24f6e.tar.bz2 linux-stable-e0e37c200f1357db0dd986edb359c41c57d24f6e.zip | |
sched: Eliminate the ts->idle_lastupdate field
Now that the only user of ts->idle_lastupdate is
update_ts_time_stats(), the entire field can be eliminated.
In update_ts_time_stats(), idle_lastupdate is first set to
"now", and a few lines later, the only user is an if() statement
that assigns a variable either to "now" or to
ts->idle_lastupdate, which has the value of "now" at that point.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: davej@redhat.com
LKML-Reference: <20100509082439.2fab0b4f@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | include/linux/tick.h | 1 | ||||
| -rw-r--r-- | kernel/time/tick-sched.c | 5 |
2 files changed, 1 insertions, 5 deletions
diff --git a/include/linux/tick.h b/include/linux/tick.h index d2ae79e21be3..0343eed40619 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -60,7 +60,6 @@ struct tick_sched { ktime_t idle_waketime; ktime_t idle_exittime; ktime_t idle_sleeptime; - ktime_t idle_lastupdate; ktime_t sleep_length; unsigned long last_jiffies; unsigned long next_jiffies; diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index e86e1c6674d1..50953f4c42b2 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -158,16 +158,13 @@ update_ts_time_stats(struct tick_sched *ts, ktime_t now, u64 *last_update_time) { ktime_t delta; - ts->idle_lastupdate = now; if (ts->idle_active) { delta = ktime_sub(now, ts->idle_entrytime); ts->idle_sleeptime = ktime_add(ts->idle_sleeptime, delta); ts->idle_entrytime = now; } - if (ts->idle_active && last_update_time) - *last_update_time = ktime_to_us(ts->idle_lastupdate); - else + if (last_update_time) *last_update_time = ktime_to_us(now); } |