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 --- 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 */