diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2012-03-07 20:10:04 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-04-10 00:19:46 (GMT) |
| commit | 75e5aaab8bf4f8a9eaf1e8fd119f8a3bbd74b7a5 (patch) | |
| tree | e7b8bb770a5209e1510a1b0f2f0bbc3b1e759bb7 /net/rds | |
| parent | b4e35a44d3c268150f3803121e1d9ca1e5e9f998 (diff) | |
| download | linux-fsl-qoriq-75e5aaab8bf4f8a9eaf1e8fd119f8a3bbd74b7a5.tar.xz | |
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 e8fdb17..5a44c6e 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(); } } |