While we are likley to succeed and break out of this loop, it isn't guaranteed. We should be power and thread friendly if we do have to go around for a second (or third, or more) attempt.
Signed-off-by: Tony Luck <[email protected]> --- diff --git a/lib/lockref.c b/lib/lockref.c index 7819c2d..9d76f40 100644 --- a/lib/lockref.c +++ b/lib/lockref.c @@ -19,6 +19,7 @@ if (likely(old.lock_count == prev.lock_count)) { \ SUCCESS; \ } \ + cpu_relax(); \ } \ } while (0) -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
