From 017b518b3751d8256fb740470ae85f70a0853dc4 Mon Sep 17 00:00:00 2001 From: Ruchi Kandoi Date: Fri, 18 Apr 2014 14:07:28 -0700 Subject: prctl: adds PR_SET_TIMERSLACK_PID for setting timer slack of an arbitrary thread. Second argument is similar to PR_SET_TIMERSLACK, if non-zero then the slack is set to that value otherwise sets it to the default for the thread. Takes PID of the thread as the third argument. This allows power/performance management software to set timer slack for other threads according to its policy for the thread (such as when the thread is designated foreground vs. background activity) Change-Id: I744d451ff4e60dae69f38f53948ff36c51c14a3f Signed-off-by: Ruchi Kandoi --- include/uapi/linux/prctl.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/uapi/linux/prctl.h b/include/uapi/linux/prctl.h index 80d4382cfe23..933ff2a9a032 100644 --- a/include/uapi/linux/prctl.h +++ b/include/uapi/linux/prctl.h @@ -179,6 +179,12 @@ struct prctl_mm_map { #define PR_SET_THP_DISABLE 41 #define PR_GET_THP_DISABLE 42 +/* Sets the timerslack for arbitrary threads + * arg2 slack value, 0 means "use default" + * arg3 pid of the thread whose timer slack needs to be set + */ +#define PR_SET_TIMERSLACK_PID 43 + #define PR_SET_VMA 0x53564d41 # define PR_SET_VMA_ANON_NAME 0 -- cgit v1.2.3