diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2012-03-07 21:10:04 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-03-14 11:56:29 -0400 |
| commit | 658b16e176dadf454b2d41f85a44377d9b65fff3 (patch) | |
| tree | 2d4657149514eda8d6fce13aa2000952f54ec5a1 | |
| parent | 8e2f9fb0b3cb9528f04e7b072163b79fb9fe72f9 (diff) | |
net: Use cpu_chill() instead of cpu_relax()
Retry loops on RT might loop forever when the modifying side was
preempted. Use cpu_chill() instead of cpu_relax() to let the system
make progress.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable-rt@vger.kernel.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | net/rds/ib_rdma.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c index 819c35a0d9cb..256ad870214b 100644 --- a/net/rds/ib_rdma.c +++ b/net/rds/ib_rdma.c @@ -33,6 +33,7 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/rculist.h> +#include <linux/delay.h> #include "rds.h" #include "ib.h" @@ -294,7 +295,7 @@ static inline void wait_clean_list_grace(void) for_each_online_cpu(cpu) { flag = &per_cpu(clean_list_grace, cpu); while (test_bit(CLEAN_LIST_BUSY_BIT, flag)) - cpu_relax(); + cpu_chill(); } } |