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authorFrederic Weisbecker <fweisbec@gmail.com>2013-04-19 18:17:38 +0400
committerFrederic Weisbecker <fweisbec@gmail.com>2013-04-19 18:31:40 +0400
commit555347f6c080d2f25265f981c963605b4dd3610d (patch)
tree3233ee51677e5098510771791c0be9d115992714 /include/linux/posix-timers.h
parenta85721601ad22ca4931e106dbc5b2cbf1d28bdea (diff)
downloadlinux-555347f6c080d2f25265f981c963605b4dd3610d.tar.xz
posix_timers: New API to prevent from stopping the tick when timers are running
Bring a new helper that the full dynticks infrastructure can call in order to know if it can safely stop the tick from the posix cpu timers subsystem point of view. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Christoph Lameter <cl@linux.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Gilad Ben Yossef <gilad@benyossef.com> Cc: Hakan Akkan <hakanakkan@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/posix-timers.h')
-rw-r--r--include/linux/posix-timers.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 042058fdb0af..3698d9d08978 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -122,6 +122,8 @@ void run_posix_cpu_timers(struct task_struct *task);
void posix_cpu_timers_exit(struct task_struct *task);
void posix_cpu_timers_exit_group(struct task_struct *task);
+bool posix_cpu_timers_can_stop_tick(struct task_struct *tsk);
+
void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
cputime_t *newval, cputime_t *oldval);