diff options
Diffstat (limited to 'meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-ondemand-fix-2-7.patch')
| -rw-r--r-- | meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-ondemand-fix-2-7.patch | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-ondemand-fix-2-7.patch b/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-ondemand-fix-2-7.patch new file mode 100644 index 000000000..ba34c4c96 --- /dev/null +++ b/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-ondemand-fix-2-7.patch @@ -0,0 +1,78 @@ +>From 166b7526ccfea8b44626b6023ff5b0a8eb869bb3 Mon Sep 17 00:00:00 2001 +From: Arjan van de Ven <arjan@linux.intel.com> +Date: Sun, 18 Apr 2010 10:33:02 -0700 +Subject: [PATCH 2/7] sched: introduce a function to update the idle statistics +Patch-mainline: in -mm tree as of 19 Apr 2010 + +Currently, two places update the idle statistics (and more to +come later in this series). + +This patch creates a helper function for updating these statistics. + +Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> +--- + kernel/time/tick-sched.c | 29 +++++++++++++++++++---------- + 1 files changed, 19 insertions(+), 10 deletions(-) + +diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c +index 54dc155..ca2211d 100644 +--- a/kernel/time/tick-sched.c ++++ b/kernel/time/tick-sched.c +@@ -150,14 +150,25 @@ static void tick_nohz_update_jiffies(ktime_t now) + touch_softlockup_watchdog(); + } + +-static void tick_nohz_stop_idle(int cpu, ktime_t now) ++/* ++ * Updates the per cpu time idle statistics counters ++ */ ++static void update_ts_time_stats(struct tick_sched *ts, ktime_t now) + { +- struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu); + ktime_t delta; + +- delta = ktime_sub(now, ts->idle_entrytime); + ts->idle_lastupdate = now; +- ts->idle_sleeptime = ktime_add(ts->idle_sleeptime, delta); ++ if (ts->idle_active) { ++ delta = ktime_sub(now, ts->idle_entrytime); ++ ts->idle_sleeptime = ktime_add(ts->idle_sleeptime, delta); ++ } ++} ++ ++static void tick_nohz_stop_idle(int cpu, ktime_t now) ++{ ++ struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu); ++ ++ update_ts_time_stats(ts, now); + ts->idle_active = 0; + + sched_clock_idle_wakeup_event(0); +@@ -165,14 +176,12 @@ static void tick_nohz_stop_idle(int cpu, ktime_t now) + + static ktime_t tick_nohz_start_idle(struct tick_sched *ts) + { +- ktime_t now, delta; ++ ktime_t now; + + now = ktime_get(); +- if (ts->idle_active) { +- delta = ktime_sub(now, ts->idle_entrytime); +- ts->idle_lastupdate = now; +- ts->idle_sleeptime = ktime_add(ts->idle_sleeptime, delta); +- } ++ ++ update_ts_time_stats(ts, now); ++ + ts->idle_entrytime = now; + ts->idle_active = 1; + sched_clock_idle_sleep_event(); +-- +1.6.2.5 + +-- +To unsubscribe from this list: send the line "unsubscribe linux-kernel" in +the body of a message to majordomo@vger.kernel.org +More majordomo info at http://vger.kernel.org/majordomo-info.html +Please read the FAQ at http://www.tux.org/lkml/ + |