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    Subject[PATCH -tip] x86: ftrace - simplify wait_for_nmi
    Get rid of 'waited' stack variable.

    Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
    ---
    arch/x86/kernel/ftrace.c | 11 +++++------
    1 file changed, 5 insertions(+), 6 deletions(-)

    Index: linux-2.6.git/arch/x86/kernel/ftrace.c
    ===================================================================
    --- linux-2.6.git.orig/arch/x86/kernel/ftrace.c
    +++ linux-2.6.git/arch/x86/kernel/ftrace.c
    @@ -133,15 +133,14 @@ void ftrace_nmi_exit(void)

    static void wait_for_nmi(void)
    {
    - int waited = 0;
    + if (!atomic_read(&in_nmi))
    + return;

    - while (atomic_read(&in_nmi)) {
    - waited = 1;
    + do {
    cpu_relax();
    - }
    + } while(atomic_read(&in_nmi));

    - if (waited)
    - nmi_wait_count++;
    + nmi_wait_count++;
    }

    static int

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