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/linux/tools/perf/Documentation/ |
H A D | perf-probe.txt | diff c588d158124d5b60184fc612e551a19720720d68 Tue Dec 12 16:05:12 CET 2017 Masami Hiramatsu <mhiramat@kernel.org> perf probe: Support escaped character in parser
Support the special characters escaped by '\' in parser. This allows user to specify versions directly like below.
===== # ./perf probe -x /lib64/libc-2.25.so malloc_get_state\\@GLIBC_2.2.5 Added new event: probe_libc:malloc_get_state (on malloc_get_state@GLIBC_2.2.5 in /usr/lib64/libc-2.25.so)
You can now use it in all perf tools, such as:
perf record -e probe_libc:malloc_get_state -aR sleep 1
=====
Or, you can use separators in source filename, e.g.
===== # ./perf probe -x /opt/test/a.out foo+bar.c:3 Semantic error :There is non-digit character in offset. Error: Command Parse Error. =====
Usually "+" in source file cause parser error, but
===== # ./perf probe -x /opt/test/a.out foo\\+bar.c:4 Added new event: probe_a:main (on @foo+bar.c:4 in /opt/test/a.out)
You can now use it in all perf tools, such as:
perf record -e probe_a:main -aR sleep 1 =====
escaped "\+" allows you to specify that.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Acked-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Paul Clarke <pc@us.ibm.com> Cc: bhargavb <bhargavaramudu@gmail.com> Cc: linux-rt-users@vger.kernel.org Link: http://lkml.kernel.org/r/151309111236.18107.5634753157435343410.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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/linux/tools/perf/util/ |
H A D | probe-event.c | diff c588d158124d5b60184fc612e551a19720720d68 Tue Dec 12 16:05:12 CET 2017 Masami Hiramatsu <mhiramat@kernel.org> perf probe: Support escaped character in parser
Support the special characters escaped by '\' in parser. This allows user to specify versions directly like below.
===== # ./perf probe -x /lib64/libc-2.25.so malloc_get_state\\@GLIBC_2.2.5 Added new event: probe_libc:malloc_get_state (on malloc_get_state@GLIBC_2.2.5 in /usr/lib64/libc-2.25.so)
You can now use it in all perf tools, such as:
perf record -e probe_libc:malloc_get_state -aR sleep 1
=====
Or, you can use separators in source filename, e.g.
===== # ./perf probe -x /opt/test/a.out foo+bar.c:3 Semantic error :There is non-digit character in offset. Error: Command Parse Error. =====
Usually "+" in source file cause parser error, but
===== # ./perf probe -x /opt/test/a.out foo\\+bar.c:4 Added new event: probe_a:main (on @foo+bar.c:4 in /opt/test/a.out)
You can now use it in all perf tools, such as:
perf record -e probe_a:main -aR sleep 1 =====
escaped "\+" allows you to specify that.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Acked-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Paul Clarke <pc@us.ibm.com> Cc: bhargavb <bhargavaramudu@gmail.com> Cc: linux-rt-users@vger.kernel.org Link: http://lkml.kernel.org/r/151309111236.18107.5634753157435343410.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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