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 <t...@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 */
