35c8d213 - perf tools: Don't set attr.exclude_guest by default

Wed, 16 Oct 2024 06:23:52 +0000

perf tools: Don't set attr.exclude_guest by defaultThe exclude_guest in the event attribute is to limit profiling in thehost environment. But I'm not sure why we want to set it by defaultcause we don't care about it in most cases and I feel like it justmakes new PMU implementation complicated.Of course it's useful for perf kvm command so I added theexclude_GH_default variable to preserve the old behavior for perf kvmand 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 willclear 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_hostIntestingly, 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'sremove the bit there too.Reviewed-by: Ian Rogers Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-3-namhyung@kernel.orgSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/tests/shell/attr/test-record-dummy-C0

8296aa0f - perf test: Move attr files into shell directory where they are used

Tue, 15 Oct 2024 00:01:58 +0000

perf test: Move attr files into shell directory where they are usedNow the attr tests are shell tests move the associated python andconfiguration files. Update the installation build rules for the newdirectories. Recycle the lib install rules for python files allowingthe explicit attr.py install line to be dropped.Signed-off-by: Ian Rogers Tested-by: Athira Rajeev Cc: Stephen Rothwell Cc: zhaimingbing Cc: Howard Chu Cc: Ze Gao Cc: Weilin Wang Cc: James Clark Cc: Leo Yan Cc: Thomas Richter Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241015000158.871828-4-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/tests/shell/attr/test-record-dummy-C0

Changes in test-record-dummy-C0

35c8d213 - perf tools: Don't set attr.exclude_guest by default

8296aa0f - perf test: Move attr files into shell directory where they are used