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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@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>
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1 changed files with 27 additions and 0 deletions
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@ -24,6 +24,31 @@ static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
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#define SCA_HEX syscall_arg__scnprintf_hex
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static size_t syscall_arg__scnprintf_whence(char *bf, size_t size,
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unsigned long arg, u8 *arg_mask __maybe_unused)
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{
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int whence = arg;
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switch (whence) {
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#define P_WHENCE(n) case SEEK_##n: return scnprintf(bf, size, #n)
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P_WHENCE(SET);
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P_WHENCE(CUR);
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P_WHENCE(END);
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#ifdef SEEK_DATA
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P_WHENCE(DATA);
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#endif
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#ifdef SEEK_HOLE
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P_WHENCE(HOLE);
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#endif
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#undef P_WHENCE
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default: break;
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}
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return scnprintf(bf, size, "%#x", whence);
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}
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#define SCA_WHENCE syscall_arg__scnprintf_whence
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static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
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unsigned long arg, u8 *arg_mask __maybe_unused)
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{
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@ -201,6 +226,8 @@ static struct syscall_fmt {
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.arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, },
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{ .name = "ioctl", .errmsg = true,
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.arg_scnprintf = { [2] = SCA_HEX, /* arg */ }, },
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{ .name = "lseek", .errmsg = true,
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.arg_scnprintf = { [2] = SCA_WHENCE, /* whence */ }, },
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{ .name = "lstat", .errmsg = true, .alias = "newlstat", },
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{ .name = "madvise", .errmsg = true,
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.arg_scnprintf = { [0] = SCA_HEX, /* start */
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