[PATCH] kernel: panic: make panic() local lock raw
From: Sebastian Andrzej Siewior
Date: Fri Mar 11 2016 - 12:48:41 EST
The lock is taken with disabled interrupts and therefore it must be
a RAW lock. Otherwise -RT will convert it into a sleeping lock and
complain about it.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
kernel/panic.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/panic.c b/kernel/panic.c
index 50d4ae2e7d1b..8ae7dc943f91 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -71,7 +71,7 @@ void __weak panic_smp_self_stop(void)
*/
void panic(const char *fmt, ...)
{
- static DEFINE_SPINLOCK(panic_lock);
+ static DEFINE_RAW_SPINLOCK(panic_lock);
static char buf[1024];
va_list args;
long i, i_next = 0;
@@ -95,7 +95,7 @@ void panic(const char *fmt, ...)
* stop themself or will wait until they are stopped by the 1st CPU
* with smp_send_stop().
*/
- if (!spin_trylock(&panic_lock))
+ if (!raw_spin_trylock(&panic_lock))
panic_smp_self_stop();
console_verbose();
--
2.7.0