Commit-ID: 579e7865b2d431bb7d380a1b4ea0aa8eb8a10fd4
Gitweb: http://git.kernel.org/tip/579e7865b2d431bb7d380a1b4ea0aa8eb8a10fd4
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Mon, 2 Sep 2013 15:37:32 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 2 Sep 2013 15:37:32 -0300
perf trace: Add beautifier for lseek's whence arg
[root@zoo ~]# perf trace -a -e lseek | head -1
546.922 ( 0.004 ms): 1184 lseek(fd: 26, offset: 0, whence: CUR) = 2
[root@zoo ~]#
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-2eiuhwz9jbnhj80q6jaqeji4@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-trace.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 1a6cb74..02aaea6 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -24,6 +24,31 @@ static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
#define SCA_HEX syscall_arg__scnprintf_hex
+static size_t syscall_arg__scnprintf_whence(char *bf, size_t size,
+ unsigned long arg, u8 *arg_mask __maybe_unused)
+{
+ int whence = arg;
+
+ switch (whence) {
+#define P_WHENCE(n) case SEEK_##n: return scnprintf(bf, size, #n)
+ P_WHENCE(SET);
+ P_WHENCE(CUR);
+ P_WHENCE(END);
+#ifdef SEEK_DATA
+ P_WHENCE(DATA);
+#endif
+#ifdef SEEK_HOLE
+ P_WHENCE(HOLE);
+#endif
+#undef P_WHENCE
+ default: break;
+ }
+
+ return scnprintf(bf, size, "%#x", whence);
+}
+
+#define SCA_WHENCE syscall_arg__scnprintf_whence
+
static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
unsigned long arg, u8 *arg_mask __maybe_unused)
{
@@ -201,6 +226,8 @@ static struct syscall_fmt {
.arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, },
{ .name = "ioctl", .errmsg = true,
.arg_scnprintf = { [2] = SCA_HEX, /* arg */ }, },
+ { .name = "lseek", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_WHENCE, /* whence */ }, },
{ .name = "lstat", .errmsg = true, .alias = "newlstat", },
{ .name = "madvise", .errmsg = true,
.arg_scnprintf = { [0] = SCA_HEX, /* start */
--
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