Messages in this thread Patch in this message | | | From | Jeremy Fitzhardinge <> | Subject | [PATCH 13/15] xen/multicalls: add unlikely around slowpath in __xen_mc_entry() | Date | Mon, 20 Jun 2011 15:15:09 -0700 |
| |
From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> --- arch/x86/xen/multicalls.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/xen/multicalls.c b/arch/x86/xen/multicalls.c index f19e43b..b9b9811 100644 --- a/arch/x86/xen/multicalls.c +++ b/arch/x86/xen/multicalls.c @@ -123,8 +123,8 @@ struct multicall_space __xen_mc_entry(size_t args) BUG_ON(preemptible()); BUG_ON(b->argidx > MC_ARGS); - if (b->mcidx == MC_BATCH || - (argidx + args) > MC_ARGS) { + if (unlikely(b->mcidx == MC_BATCH || + (argidx + args) > MC_ARGS)) { trace_xen_mc_flush_reason((b->mcidx == MC_BATCH) ? XEN_MC_FL_BATCH : XEN_MC_FL_ARGS); xen_mc_flush(); -- 1.7.5.4
| |