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    Subject[patch 6/8] x86/tsc: Move sync cleanup to a safe place
    Cleaning up the stop marker on the control CPU is wrong when we want to add
    retry support. Move the cleanup to the starting CPU.

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    ---
    arch/x86/kernel/tsc_sync.c | 10 +++++-----
    1 file changed, 5 insertions(+), 5 deletions(-)

    --- a/arch/x86/kernel/tsc_sync.c
    +++ b/arch/x86/kernel/tsc_sync.c
    @@ -252,11 +252,6 @@ void check_tsc_sync_source(int cpu)
    }

    /*
    - * Reset it - in case this is a second bootup:
    - */
    - atomic_set(&stop_count, 0);
    -
    - /*
    * Wait for the target to start or to skip the test:
    */
    while (atomic_read(&start_count) != cpus - 1) {
    @@ -345,6 +340,11 @@ void check_tsc_sync_target(void)
    */
    while (atomic_read(&stop_count) != cpus)
    cpu_relax();
    +
    + /*
    + * Reset it for the next sync test:
    + */
    + atomic_set(&stop_count, 0);
    }

    #endif /* CONFIG_SMP */

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