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>
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index eb1f82f..199ea21 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 @@
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 @@
* 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 @@
"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 @@
"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 @@
*/
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
diff --git a/drivers/net/wireless/ipw2100.c b/drivers/net/wireless/ipw2100.c
index 2ab107f..5bf9e00 100644
--- a/drivers/net/wireless/ipw2100.c
+++ b/drivers/net/wireless/ipw2100.c
@@ -162,7 +162,7 @@
#include <linux/firmware.h>
#include <linux/acpi.h>
#include <linux/ctype.h>
-#include <linux/latency.h>
+#include <linux/pm_qos_params.h>
#include "ipw2100.h"
@@ -1701,7 +1701,7 @@
/* the ipw2100 hardware really doesn't want power management delays
* longer than 175usec
*/
- modify_acceptable_latency("ipw2100", 175);
+ pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100", 175);
/* If the interrupt is enabled, turn it off... */
spin_lock_irqsave(&priv->low_lock, flags);
@@ -1856,7 +1856,8 @@
ipw2100_disable_interrupts(priv);
spin_unlock_irqrestore(&priv->low_lock, flags);
- modify_acceptable_latency("ipw2100", INFINITE_LATENCY);
+ pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100",
+ PM_QOS_DEFAULT_VALUE);
/* We have to signal any supplicant if we are disassociating */
if (associated)
@@ -6554,7 +6555,8 @@
if (ret)
goto out;
- set_acceptable_latency("ipw2100", INFINITE_LATENCY);
+ pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100",
+ PM_QOS_DEFAULT_VALUE);
#ifdef CONFIG_IPW2100_DEBUG
ipw2100_debug_level = debug;
ret = driver_create_file(&ipw2100_pci_driver.driver,
@@ -6576,7 +6578,7 @@
&driver_attr_debug_level);
#endif
pci_unregister_driver(&ipw2100_pci_driver);
- remove_acceptable_latency("ipw2100");
+ pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100");
}
module_init(ipw2100_init);