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perf probe: Fix line range description since a single file is allowed

Browse source 
$ perf-probe -L sched.c

is currently allowed but not documented.

Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
LKML-Reference: <1292854685-8230-5-git-send-email-fbuihuu@gmail.com>
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Franck Bui-Huu 2010-12-20 15:18:03 +01:00 committed by Arnaldo Carvalho de Melo
parent 44b81e929b
commit 9d95b580a8
2 changed files with 9 additions and 6 deletions
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2
tools/perf/Documentation/perf-probe.txt
View file

@ -117,7 +117,7 @@ LINE SYNTAX
-----------
Line range is described by following syntax.
"FUNC[:RLN[+NUM|-RLN2]]|SRC:ALN[+NUM|-ALN2]"
"FUNC[:RLN[+NUM|-RLN2]]|SRC[:ALN[+NUM|-ALN2]]"
FUNC specifies the function name of showing lines. 'RLN' is the start line
number from function entry line, and 'RLN2' is the end line number. As same as

13
tools/perf/util/probe-event.c
View file

@ -515,15 +515,18 @@ int show_available_vars(struct perf_probe_event *pevs __unused,
}
#endif
/*
* Stuff 'lr' according to the line range described by 'arg'.
* The line range syntax is described by:
*
* SRC[:SLN[+NUM|-ELN]]
* FNC[:SLN[+NUM|-ELN]]
*/
int parse_line_range_desc(const char *arg, struct line_range *lr)
{
const char *ptr;
char *tmp;
/*
* <Syntax>
* SRC:SLN[+NUM|-ELN]
* FUNC[:SLN[+NUM|-ELN]]
*/
ptr = strchr(arg, ':');
if (ptr) {
lr->start = (int)strtoul(ptr + 1, &tmp, 0);