diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2012-03-07 20:10:04 (GMT) |
---|---|---|
committer | Scott Wood <scottwood@freescale.com> | 2013-04-04 22:09:35 (GMT) |
commit | 77927da01054f748106944994ea63fcbabd594ea (patch) | |
tree | ac6f658cfa4e606c0e73e1952ee27d94b1fc3475 /net/rds | |
parent | a442efcdd891980eed4a65af2412e95f05d303fc (diff) | |
download | linux-fsl-qoriq-77927da01054f748106944994ea63fcbabd594ea.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(); } } |