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| author | Frederic Weisbecker <frederic@kernel.org> | 2020-11-13 13:13:33 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-01-06 16:24:59 -0800 |
| commit | dcd42591ebb8a25895b551a5297ea9c24414ba54 (patch) | |
| tree | eec399bc78a189494237e0e3842098b2b8591e9b /kernel/time/timer.c | |
| parent | 43759fe5a137389e94ed6d4680c3c63c17273158 (diff) | |
| download | linux-dcd42591ebb8a25895b551a5297ea9c24414ba54.tar.gz | |
timer: Add timer_curr_running()
This commit adds a timer_curr_running() function that verifies that the
current code is running in the context of the specified timer's handler.
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Neeraj Upadhyay <neeraju@codeaurora.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/time/timer.c')
| -rw-r--r-- | kernel/time/timer.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 8dbc008f8942b8..f9b2096456e597 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1237,6 +1237,19 @@ int try_to_del_timer_sync(struct timer_list *timer) } EXPORT_SYMBOL(try_to_del_timer_sync); +bool timer_curr_running(struct timer_list *timer) +{ + int i; + + for (i = 0; i < NR_BASES; i++) { + struct timer_base *base = this_cpu_ptr(&timer_bases[i]); + if (base->running_timer == timer) + return true; + } + + return false; +} + #ifdef CONFIG_PREEMPT_RT static __init void timer_base_init_expiry_lock(struct timer_base *base) { |