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author | Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2014-08-13 16:12:50 (GMT) |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-08-13 18:54:11 (GMT) |
commit | 467ec08567483e3868f240b1ee03808970e06388 (patch) | |
tree | 672151dca8192560f5459abc5a8de1e2b2a65c6e /tools/perf/builtin-trace.c | |
parent | 5e45187cc94814d2a5324bc18af994efc4fb4f7c (diff) | |
download | linux-467ec08567483e3868f240b1ee03808970e06388.tar.xz |
perf probe: Fix --del option to delete events only with uprobe events
Current perf probe --del doesn't work if only CONFIG_UPROBE_EVENTS=y
because it aborts when it fails to open kprobe_events file before
checking uprobe_events file.
This fixes --del option to delete dynamic events if it can open either
kprobe_events or uprobe_events. Only if it failed to open both of them,
it shows an error message and aborts.
Without this patch, if we run perf probe -d on the kernel configured
with CONFIG_KPROBE_EVENTS=n and CONFIG_UPROBE_EVENTS=y,
# perf probe -d \*
kprobe_events file does not exist - please rebuild kernel with CONFIG_KPROBE_EVENTS.
Error: Failed to delete events.
With this patch,
# perf probe -d \*
Removed event: probe_perf:alloc_event
Changes in v2:
- Use strerror_r instead of strerror.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Naohiro Aota <naota@elisp.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20140813161250.26440.24028.stgit@kbuild-fedora.novalocal
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-trace.c')
0 files changed, 0 insertions, 0 deletions