History log of /linux-6.15/tools/perf/tests/shell/attr/test-record-dummy-C0 (Results 1 – 2 of 2)
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# 35c8d213 16-Oct-2024 Namhyung Kim <[email protected]>

perf tools: Don't set attr.exclude_guest by default

The exclude_guest in the event attribute is to limit profiling in the
host environment. But I'm not sure why we want to set it by default
cause w

perf tools: Don't set attr.exclude_guest by default

The exclude_guest in the event attribute is to limit profiling in the
host environment. But I'm not sure why we want to set it by default
cause we don't care about it in most cases and I feel like it just
makes new PMU implementation complicated.

Of course it's useful for perf kvm command so I added the
exclude_GH_default variable to preserve the old behavior for perf kvm
and other commands like perf record and stat won't set the exclude bit.
This is helpful for AMD IBS case since having exclude_guest bit will
clear new feature bit due to the missing feature check logic.

$ sysctl kernel.perf_event_paranoid
kernel.perf_event_paranoid = 0

$ perf record -W -e ibs_op// -vv true 2>&1 | grep switching
switching off PERF_FORMAT_LOST support
switching off weight struct support
switching off bpf_event
switching off ksymbol
switching off cloexec flag
switching off mmap2
switching off exclude_guest, exclude_host

Intestingly, I found it sets the exclude_bit if "u" modifier is used.
I don't know why but it's neither intuitive nor consistent. Let's
remove the bit there too.

Reviewed-by: Ian Rogers <[email protected]>
Reviewed-by: James Clark <[email protected]>
Reviewed-by: Ravi Bangoria <[email protected]>
Acked-by: Kan Liang <[email protected]>
Cc: James Clark <[email protected]>
Cc: Atish Patra <[email protected]>
Cc: Mingwei Zhang <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Thomas Richter <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>

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# 8296aa0f 15-Oct-2024 Ian Rogers <[email protected]>

perf test: Move attr files into shell directory where they are used

Now the attr tests are shell tests move the associated python and
configuration files. Update the installation build rules for the

perf test: Move attr files into shell directory where they are used

Now the attr tests are shell tests move the associated python and
configuration files. Update the installation build rules for the new
directories. Recycle the lib install rules for python files allowing
the explicit attr.py install line to be dropped.

Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Athira Rajeev <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Cc: zhaimingbing <[email protected]>
Cc: Howard Chu <[email protected]>
Cc: Ze Gao <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: James Clark <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Thomas Richter <[email protected]>
Cc: Veronika Molnarova <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>

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