6  * We check whether all boot CPUs have their TSC's synchronized,
9  * The warp-check is point-to-point between two CPUs, the CPU
13  * Only two CPUs may participate - they can enter in any order.
15  *   protects against more than 2 CPUs entering this code. )
25  * Entry/exit counters that make sure that both CPUs
43  * TSC-warp measurement loop running on both CPUs:
107 	int cpus = 2;  in check_tsc_sync_source()  local
131 	while (atomic_read(&start_count) != cpus-1)  in check_tsc_sync_source()
140 	while (atomic_read(&stop_count) != cpus-1)  in check_tsc_sync_source()
146 		pr_warning("Measured %Ld cycles TSC warp between CPUs, "  in check_tsc_sync_source()
169  * Freshly booted CPUs call into this:
173 	int cpus = 2;  in check_tsc_sync_target()  local
183 	while (atomic_read(&start_count) != cpus)  in check_tsc_sync_target()
196 	while (atomic_read(&stop_count) != cpus)  in check_tsc_sync_target()