locking, timer_stats: Annotate table_lock as raw
The table_lock lock can be taken in atomic context and therefore
cannot be preempted on -rt - annotate it.
In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.
Reported-by: Andreas Sundebo <kernel@sundebo.dk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Andreas Sundebo <kernel@sundebo.dk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c
index a5d0a3a..0b537f2 100644
--- a/kernel/time/timer_stats.c
+++ b/kernel/time/timer_stats.c
@@ -81,7 +81,7 @@
/*
* Spinlock protecting the tables - not taken during lookup:
*/
-static DEFINE_SPINLOCK(table_lock);
+static DEFINE_RAW_SPINLOCK(table_lock);
/*
* Per-CPU lookup locks for fast hash lookup:
@@ -188,7 +188,7 @@
prev = NULL;
curr = *head;
- spin_lock(&table_lock);
+ raw_spin_lock(&table_lock);
/*
* Make sure we have not raced with another CPU:
*/
@@ -215,7 +215,7 @@
*head = curr;
}
out_unlock:
- spin_unlock(&table_lock);
+ raw_spin_unlock(&table_lock);
return curr;
}