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authorJames Bottomley <James.Bottomley@suse.de>2010-07-05 22:53:06 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2010-07-19 02:00:34 +0200
commit82f682514a5df89ffb3890627eebf0897b7a84ec (patch)
tree27a3dba7a179102ac5bfdd5935679bd2abd3f70f /include/linux/pm_qos_params.h
parent5f279845f9d684661563894d44729a0c706375b4 (diff)
pm_qos: Get rid of the allocation in pm_qos_add_request()
All current users of pm_qos_add_request() have the ability to supply the memory required by the pm_qos routines, so make them do this and eliminate the kmalloc() with pm_qos_add_request(). This has the double benefit of making the call never fail and allowing it to be called from atomic context. Signed-off-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: mark gross <markgross@thegnar.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include/linux/pm_qos_params.h')
-rw-r--r--include/linux/pm_qos_params.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/include/linux/pm_qos_params.h b/include/linux/pm_qos_params.h
index 8ba440e5eb7..77cbddb3784 100644
--- a/include/linux/pm_qos_params.h
+++ b/include/linux/pm_qos_params.h
@@ -1,8 +1,10 @@
+#ifndef _LINUX_PM_QOS_PARAMS_H
+#define _LINUX_PM_QOS_PARAMS_H
/* interface for the pm_qos_power infrastructure of the linux kernel.
*
* Mark Gross <mgross@linux.intel.com>
*/
-#include <linux/list.h>
+#include <linux/plist.h>
#include <linux/notifier.h>
#include <linux/miscdevice.h>
@@ -14,9 +16,12 @@
#define PM_QOS_NUM_CLASSES 4
#define PM_QOS_DEFAULT_VALUE -1
-struct pm_qos_request_list;
+struct pm_qos_request_list {
+ struct plist_node list;
+ int pm_qos_class;
+};
-struct pm_qos_request_list *pm_qos_add_request(int pm_qos_class, s32 value);
+void pm_qos_add_request(struct pm_qos_request_list *l, int pm_qos_class, s32 value);
void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
s32 new_value);
void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req);
@@ -24,4 +29,6 @@ void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req);
int pm_qos_request(int pm_qos_class);
int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier);
int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier);
+int pm_qos_request_active(struct pm_qos_request_list *req);
+#endif