Messages in this thread Patch in this message | | | From | Tero Kristo <> | Subject | [PATCHv2 1/2] trace/hwlat: Do not wipe the contents of per-cpu thread data | Date | Fri, 10 Mar 2023 12:04:50 +0200 |
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Do not wipe the contents of the per-cpu kthread data when starting the tracer, as this will completely forget about already running instances and can later start new additional per-cpu threads.
Signed-off-by: Tero Kristo <tero.kristo@linux.intel.com> --- v2: * split into separate patch
kernel/trace/trace_hwlat.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c index d440ddd5fd8b..edc26dc22c3f 100644 --- a/kernel/trace/trace_hwlat.c +++ b/kernel/trace/trace_hwlat.c @@ -584,9 +584,6 @@ static int start_per_cpu_kthreads(struct trace_array *tr) */ cpumask_and(current_mask, cpu_online_mask, tr->tracing_cpumask); - for_each_online_cpu(cpu) - per_cpu(hwlat_per_cpu_data, cpu).kthread = NULL; - for_each_cpu(cpu, current_mask) { retval = start_cpu_kthread(cpu); if (retval) -- 2.25.1
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