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perf trace: Add beautifier for lseek's whence arg

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[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@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-2eiuhwz9jbnhj80q6jaqeji4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2013-09-02 15:37:32 -03:00
parent 0b8c25d949
commit 579e7865b2
1 changed files with 27 additions and 0 deletions
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27
tools/perf/builtin-trace.c
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@ -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 */