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commit6b8d68f1ceupstream. When we put an event with multiple probes, perf-probe fails to delete with filters. This comes from a failure to list up the event name because of overwrapping its name. To fix this issue, skip to list up the event which has same name. Without this patch: # perf probe -l \* probe_perf:map__map_ip (on perf_sample__fprintf_brstackoff:21@ probe_perf:map__map_ip (on perf_sample__fprintf_brstackoff:25@ probe_perf:map__map_ip (on append_inlines:12@util/machine.c in probe_perf:map__map_ip (on unwind_entry:19@util/machine.c in / probe_perf:map__map_ip (on map__map_ip@util/map.h in /home/mhi probe_perf:map__map_ip (on map__map_ip@util/map.h in /home/mhi # perf probe -d \* "*" does not hit any event. Error: Failed to delete events. Reason: No such file or directory (Code: -2) With it: # perf probe -d \* Removed event: probe_perf:map__map_ip # Fixes:72363540c0("perf probe: Support multiprobe event") Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org> Reported-by: He Zhe <zhe.he@windriver.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: stable@vger.kernel.org Link: http://lore.kernel.org/lkml/158287666197.16697.7514373548551863562.stgit@devnote2 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.