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| author | Masami Hiramatsu <mhiramat@redhat.com> | 2010-04-12 13:17:00 -0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-04-14 17:26:14 -0300 |
| commit | df0faf4be02996135bc3a06b4f34360449c78084 (patch) | |
| tree | a881d7b195d1759e470c0c024c52221508067ebf /tools/perf/Documentation | |
| parent | 48481938b02471d505296d7557ed296eb093d496 (diff) | |
| download | op-kernel-dev-df0faf4be02996135bc3a06b4f34360449c78084.zip op-kernel-dev-df0faf4be02996135bc3a06b4f34360449c78084.tar.gz | |
perf probe: Use the last field name as the argument name
Set the last field name to the argument name when the argument
is refering a data-structure member.
e.g.
./perf probe --add 'vfs_read file->f_mode'
Add new event:
probe:vfs_read (on vfs_read with f_mode=file->f_mode)
This probe records file->f_mode, but the argument name becomes "f_mode".
This enables perf-trace command to parse trace event format correctly.
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20100412171700.3790.72961.stgit@localhost6.localdomain6>
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-probe.txt | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-probe.txt b/tools/perf/Documentation/perf-probe.txt index e36ed4d..441324f2 100644 --- a/tools/perf/Documentation/perf-probe.txt +++ b/tools/perf/Documentation/perf-probe.txt @@ -87,7 +87,7 @@ Each probe argument follows below syntax. [NAME=]LOCALVAR|$retval|%REG|@SYMBOL -'NAME' specifies the name of this argument (optional). You can use the name of local variable, local data structure member (e.g. var->field, var.field2), or kprobe-tracer argument format (e.g. $retval, %ax, etc). +'NAME' specifies the name of this argument (optional). You can use the name of local variable, local data structure member (e.g. var->field, var.field2), or kprobe-tracer argument format (e.g. $retval, %ax, etc). Note that the name of this argument will be set as the last member name if you specify a local data structure member (e.g. field2 for 'var->field1.field2'.) LINE SYNTAX ----------- |
