diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2012-03-07 21:10:04 +0100 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-11 11:07:55 -0500 |
| commit | 3c6e53d97894be11dddc344f69206890fbc552d8 (patch) | |
| tree | 46fee5839389c5ddcaa40cd377c894cb43abc067 /net/rds | |
| parent | 19d863aa4b89dc1ed016d06ec5eccc79d3ff1a0d (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
Diffstat (limited to 'net/rds')
| -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 e8fdb172adbb..5a44c6e77cd8 100644 --- a/net/rds/ib_rdma.c +++ b/net/rds/ib_rdma.c @@ -34,6 +34,7 @@ #include <linux/slab.h> #include <linux/rculist.h> #include <linux/llist.h> +#include <linux/delay.h> #include "rds.h" #include "ib.h" @@ -286,7 +287,7 @@ 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(); } } |