[PATCH] x86-64: Fix idle=poll

x86_64 idle=poll might be a little less responsive than it should: unlike
mwait_idle, and unlike i386, its poll_idle left TIF_POLLING_NRFLAG set.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index b19cee6a12e6ca529cc09921f2320586da752ced..e9f35c60f8c6f1bf47443143653beccfbcac3fb7 100644 (file)
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -123,6 +123,7 @@ static void poll_idle (void)
                        : :
                        "i" (_TIF_NEED_RESCHED), 
                        "m" (current_thread_info()->flags));
+               clear_thread_flag(TIF_POLLING_NRFLAG);
        } else {
                set_need_resched();
        }