diff options
Diffstat (limited to 'kernel/trace/trace_hwlat.c')
| -rw-r--r-- | kernel/trace/trace_hwlat.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c index 43a436d85a01..bae74b95cf55 100644 --- a/kernel/trace/trace_hwlat.c +++ b/kernel/trace/trace_hwlat.c @@ -286,7 +286,6 @@ out: } static struct cpumask save_cpumask; -static bool disable_migrate; static void move_to_next_cpu(void) { @@ -294,15 +293,13 @@ static void move_to_next_cpu(void) struct trace_array *tr = hwlat_trace; int next_cpu; - if (disable_migrate) - return; /* * If for some reason the user modifies the CPU affinity * of this thread, then stop migrating for the duration * of the current test. */ if (!cpumask_equal(current_mask, current->cpus_ptr)) - goto disable; + goto change_mode; get_online_cpus(); cpumask_and(current_mask, cpu_online_mask, tr->tracing_cpumask); @@ -313,7 +310,7 @@ static void move_to_next_cpu(void) next_cpu = cpumask_first(current_mask); if (next_cpu >= nr_cpu_ids) /* Shouldn't happen! */ - goto disable; + goto change_mode; cpumask_clear(current_mask); cpumask_set_cpu(next_cpu, current_mask); @@ -321,8 +318,9 @@ static void move_to_next_cpu(void) sched_setaffinity(0, current_mask); return; - disable: - disable_migrate = true; + change_mode: + hwlat_data.thread_mode = MODE_NONE; + pr_info(BANNER "cpumask changed while in round-robin mode, switching to mode none\n"); } /* @@ -744,7 +742,6 @@ static int hwlat_tracer_init(struct trace_array *tr) hwlat_trace = tr; - disable_migrate = false; hwlat_data.count = 0; tr->max_latency = 0; save_tracing_thresh = tracing_thresh; |