Messages in this thread | | | Date | Fri, 10 Mar 2023 14:52:34 +0100 | Subject | Re: [PATCHv2 2/2] trace/hwlat: Do not start per-cpu thread if it is already running | From | Daniel Bristot de Oliveira <> |
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On 3/10/23 11:04, Tero Kristo wrote: > The hwlatd tracer will end up starting multiple per-cpu threads with > the following script: > > #!/bin/sh > cd /sys/kernel/debug/tracing > echo 0 > tracing_on > echo hwlat > current_tracer > echo per-cpu > hwlat_detector/mode > echo 100000 > hwlat_detector/width > echo 200000 > hwlat_detector/window > echo 1 > tracing_on > > To fix the issue, check if the hwlatd thread for the cpu is already > running, before starting a new one. Along with the previous patch, this > avoids running multiple instances of the same CPU thread on the system. > > Signed-off-by: Tero Kristo <tero.kristo@linux.intel.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
-- Daniel
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