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| author | Mark Gross <mgross@linux.intel.com> | 2008-02-04 22:30:09 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:22 -0800 |
| commit | f011e2e2df3393c16b0fdc48e855e909b7e021ee (patch) | |
| tree | 1ad56011597c739336d7068c8182fd9cfdddad5b /drivers/acpi/processor_idle.c | |
| parent | d82b35186eaa816267f044bd70cc0acb3c7971a3 (diff) | |
| download | blackbird-op-linux-f011e2e2df3393c16b0fdc48e855e909b7e021ee.tar.gz blackbird-op-linux-f011e2e2df3393c16b0fdc48e855e909b7e021ee.zip | |
latency.c: use QoS infrastructure
Replace latency.c use with pm_qos_params use.
Signed-off-by: mark gross <mgross@linux.intel.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index eb1f82f79153..199ea2146153 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -38,7 +38,7 @@ #include <linux/dmi.h> #include <linux/moduleparam.h> #include <linux/sched.h> /* need_resched() */ -#include <linux/latency.h> +#include <linux/pm_qos_params.h> #include <linux/clockchips.h> #include <linux/cpuidle.h> @@ -648,7 +648,8 @@ static void acpi_processor_idle(void) if (cx->promotion.state && ((cx->promotion.state - pr->power.states) <= max_cstate)) { if (sleep_ticks > cx->promotion.threshold.ticks && - cx->promotion.state->latency <= system_latency_constraint()) { + cx->promotion.state->latency <= + pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)) { cx->promotion.count++; cx->demotion.count = 0; if (cx->promotion.count >= @@ -692,7 +693,8 @@ static void acpi_processor_idle(void) * or if the latency of the current state is unacceptable */ if ((pr->power.state - pr->power.states) > max_cstate || - pr->power.state->latency > system_latency_constraint()) { + pr->power.state->latency > + pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)) { if (cx->demotion.state) next_state = cx->demotion.state; } @@ -1200,7 +1202,7 @@ static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset) "maximum allowed latency: %d usec\n", pr->power.state ? pr->power.state - pr->power.states : 0, max_cstate, (unsigned)pr->power.bm_activity, - system_latency_constraint()); + pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)); seq_puts(seq, "states:\n"); @@ -1718,8 +1720,9 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr, "ACPI: processor limited to max C-state %d\n", max_cstate); first_run++; -#if !defined (CONFIG_CPU_IDLE) && defined (CONFIG_SMP) - register_latency_notifier(&acpi_processor_latency_notifier); +#if !defined(CONFIG_CPU_IDLE) && defined(CONFIG_SMP) + pm_qos_add_notifier(PM_QOS_CPU_DMA_LATENCY, + &acpi_processor_latency_notifier); #endif } @@ -1806,7 +1809,8 @@ int acpi_processor_power_exit(struct acpi_processor *pr, */ cpu_idle_wait(); #ifdef CONFIG_SMP - unregister_latency_notifier(&acpi_processor_latency_notifier); + pm_qos_remove_notifier(PM_QOS_CPU_DMA_LATENCY, + &acpi_processor_latency_notifier); #endif } #endif |
