github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-08 22:52:35 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ANDROID: idle_notifier: Add generic idle notifiers

Browse Source 
AOSP Change-ID: Idf29cda15be151f494ff245933c12462643388d5
moved x86_64 idle notifiers as generic so that they can
be used in interactive governor.

Upstream change 8e7a7ee9dd ("x86/idle: Remove idle_notifier")
removed x86_64 idle notifiers altogether. This patch add
generic idle notifiers again.

Fixes: android-4.9 commit bfd2a547fc17 ("ANDROID: ARM: Call idle notifiers")
Change-Id: I94a66c74616a4108f4ed49f9afb2447079599f90
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Liang Chen <cl@rock-chips.com>
(cherry picked from https://android.googlesource.com/kernel/msm
 commit c2461bc0a4001a35cc3876c62ff27220467efe66)
This commit is contained in:
Amit Pundir 2017-02-23 16:02:45 -08:00 committed by Tao Huang
parent 8d482837ab
commit d70f124dea
2 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
include/linux/cpu.h
View File

@ -217,4 +217,11 @@ static inline bool cpu_mitigations_auto_nosmt(void)
return cpu_mitigations == CPU_MITIGATIONS_AUTO_NOSMT;
}
#define IDLE_START 1
#define IDLE_END 2
void idle_notifier_register(struct notifier_block *n);
void idle_notifier_unregister(struct notifier_block *n);
void idle_notifier_call_chain(unsigned long val);
#endif /* _LINUX_CPU_H_ */

20
kernel/cpu.c
View File

@ -2306,3 +2306,23 @@ static int __init mitigations_parse_cmdline(char *arg)
return 0;
}
early_param("mitigations", mitigations_parse_cmdline);
static ATOMIC_NOTIFIER_HEAD(idle_notifier);
void idle_notifier_register(struct notifier_block *n)
{
atomic_notifier_chain_register(&idle_notifier, n);
}
EXPORT_SYMBOL_GPL(idle_notifier_register);
void idle_notifier_unregister(struct notifier_block *n)
{
atomic_notifier_chain_unregister(&idle_notifier, n);
}
EXPORT_SYMBOL_GPL(idle_notifier_unregister);
void idle_notifier_call_chain(unsigned long val)
{
atomic_notifier_call_chain(&idle_notifier, val, NULL);
}
EXPORT_SYMBOL_GPL(idle_notifier_call_chain);