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perf sched map supports cpu filter.
However, even with cpu filters active, any context switch currently
corresponds to a separate line.
As result, context switches on irrelevant cpus result to redundant lines,
which makes the output particlularly difficult to read on wide
architectures.
Fix it by skipping printing for irrelevant CPUs.
Example snippet of output before fix:
*B0 1.461147 secs
B0
B0
B0
*G0 1.517139 secs
After fix:
*B0 1.461147 secs
*G0 1.517139 secs
Signed-off-by: Fernand Sieber <sieberf@amazon.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-and-tested-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240614073517.94974-1-sieberf@amazon.com
231295a186