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authorAdrian Hunter <adrian.hunter@intel.com>2018-11-26 14:12:52 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-12-17 14:54:51 -0300
commit1c6f709b9f96366cc47af23c05ecec9b8c0c392d (patch)
tree284f919e885b3cf029a40624b7777f16713e61d5 /lib/locking-selftest-softirq.h
parent1b3aae90c6abdf8a844da2aa4aed1eb6947a7d39 (diff)
perf intel-pt: Fix error with config term "pt=0"
Users should never use 'pt=0', but if they do it may give a meaningless error: $ perf record -e intel_pt/pt=0/u uname Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (intel_pt/pt=0/u). Fix that by forcing 'pt=1'. Committer testing: # perf record -e intel_pt/pt=0/u uname Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (intel_pt/pt=0/u). /bin/dmesg | grep -i perf may provide additional information. # perf record -e intel_pt/pt=0/u uname pt=0 doesn't make sense, forcing pt=1 Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data ] # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/b7c5b4e5-9497-10e5-fd43-5f3e4a0fe51d@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'lib/locking-selftest-softirq.h')
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