diff options
Diffstat (limited to 'meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.34-ondemand-fix-6-7.patch')
| -rw-r--r-- | meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.34-ondemand-fix-6-7.patch | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.34-ondemand-fix-6-7.patch b/meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.34-ondemand-fix-6-7.patch deleted file mode 100644 index fb3010592..000000000 --- a/meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.34-ondemand-fix-6-7.patch +++ /dev/null @@ -1,122 +0,0 @@ ->From c4dd11703034f2ecbc3180603663fab14c292d7c Mon Sep 17 00:00:00 2001 -From: Arjan van de Ven <arjan@linux.intel.com> -Date: Sun, 18 Apr 2010 10:57:43 -0700 -Subject: [PATCH 6/7] sched: introduce get_cpu_iowait_time_us() -Patch-mainline: in -mm tree as of 19 Apr 2010 - -For the ondemand cpufreq governor, it is desired that the iowait -time is microaccounted in a similar way as idle time is. - -This patch introduces the infrastructure to account and expose -this information via the get_cpu_iowait_time_us() function. - -Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> ---- - include/linux/tick.h | 4 ++++ - kernel/time/tick-sched.c | 28 ++++++++++++++++++++++++++++ - kernel/time/timer_list.c | 1 + - 3 files changed, 33 insertions(+), 0 deletions(-) - -diff --git a/include/linux/tick.h b/include/linux/tick.h -index 0343eed..4aa3703 100644 ---- a/include/linux/tick.h -+++ b/include/linux/tick.h -@@ -42,6 +42,7 @@ enum tick_nohz_mode { - * @idle_waketime: Time when the idle was interrupted - * @idle_exittime: Time when the idle state was left - * @idle_sleeptime: Sum of the time slept in idle with sched tick stopped -+ * @iowait_sleeptime: Sum of the time slept in idle with sched tick stopped, with IO outstanding - * @sleep_length: Duration of the current idle sleep - * @do_timer_lst: CPU was the last one doing do_timer before going idle - */ -@@ -60,6 +61,7 @@ struct tick_sched { - ktime_t idle_waketime; - ktime_t idle_exittime; - ktime_t idle_sleeptime; -+ ktime_t iowait_sleeptime; - ktime_t sleep_length; - unsigned long last_jiffies; - unsigned long next_jiffies; -@@ -123,6 +125,7 @@ extern void tick_nohz_stop_sched_tick(int inidle); - extern void tick_nohz_restart_sched_tick(void); - extern ktime_t tick_nohz_get_sleep_length(void); - extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time); -+extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time); - # else - static inline void tick_nohz_stop_sched_tick(int inidle) { } - static inline void tick_nohz_restart_sched_tick(void) { } -@@ -133,6 +136,7 @@ static inline ktime_t tick_nohz_get_sleep_length(void) - return len; - } - static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; } -+static inline u64 get_cpu_iowait(int cpu, u64 *unused) { return -1; } - # endif /* !NO_HZ */ - - #endif -diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c -index 326f5f8..a6104a8 100644 ---- a/kernel/time/tick-sched.c -+++ b/kernel/time/tick-sched.c -@@ -161,6 +161,8 @@ update_ts_time_stats(struct tick_sched *ts, ktime_t now, u64 *last_update_time) - if (ts->idle_active) { - delta = ktime_sub(now, ts->idle_entrytime); - ts->idle_sleeptime = ktime_add(ts->idle_sleeptime, delta); -+ if (nr_iowait_cpu() > 0) -+ ts->iowait_sleeptime = ktime_add(ts->iowait_sleeptime, delta); - ts->idle_entrytime = now; - } - -@@ -220,6 +222,32 @@ u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time) - } - EXPORT_SYMBOL_GPL(get_cpu_idle_time_us); - -+/* -+ * get_cpu_iowait_time_us - get the total iowait time of a cpu -+ * @cpu: CPU number to query -+ * @last_update_time: variable to store update time in -+ * -+ * Return the cummulative iowait time (since boot) for a given -+ * CPU, in microseconds. -+ * -+ * This time is measured via accounting rather than sampling, -+ * and is as accurate as ktime_get() is. -+ * -+ * This function returns -1 if NOHZ is not enabled. -+ */ -+u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time) -+{ -+ struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu); -+ -+ if (!tick_nohz_enabled) -+ return -1; -+ -+ update_ts_time_stats(ts, ktime_get(), last_update_time); -+ -+ return ktime_to_us(ts->iowait_sleeptime); -+} -+EXPORT_SYMBOL_GPL(get_cpu_iowait_time_us); -+ - /** - * tick_nohz_stop_sched_tick - stop the idle tick from the idle task - * -diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c -index 1a4a7dd..ab8f5e3 100644 ---- a/kernel/time/timer_list.c -+++ b/kernel/time/timer_list.c -@@ -176,6 +176,7 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now) - P_ns(idle_waketime); - P_ns(idle_exittime); - P_ns(idle_sleeptime); -+ P_ns(iowait_sleeptime); - P(last_jiffies); - P(next_jiffies); - P_ns(idle_expires); --- -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/ - |