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Message-Id: <1378155393-7993-11-git-send-email-acme@infradead.org>
Date: Mon, 2 Sep 2013 17:56:33 -0300
From: Arnaldo Carvalho de Melo <acme@...radead.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Adrian Hunter <adrian.hunter@...el.com>,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
Paul Mackerras <paulus@...ba.org>,
Peter Zijlstra <peterz@...radead.org>,
Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 10/10] perf trace: Tell arg formatters the arg index
From: Arnaldo Carvalho de Melo <acme@...hat.com>
... so that it can mask args relative to its position, like the 'mode' arg
that may or not be printed according to the 'flags' (O_CREAT) value.
[root@zoo ~]# perf trace -a -e openat,open_by_handle_at | head -1
469.754 ( 0.034 ms): 1183 openat(dfd: -100, filename: 0x7fbde40014b0, flags: CLOEXEC|DIRECTORY|NONBLOCK) = 23
[root@zoo ~]#
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Mike Galbraith <efault@....de>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-bgokqpkufd4sio7ixxknf1ux@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/builtin-trace.c | 36 +++++++++++++++++++++++++-----------
1 file changed, 25 insertions(+), 11 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 5b6b287..b6f0725 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -17,7 +17,9 @@
#include <linux/futex.h>
static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask __maybe_unused)
+ unsigned long arg,
+ u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
return scnprintf(bf, size, "%#lx", arg);
}
@@ -25,7 +27,9 @@ 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)
+ unsigned long arg,
+ u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
int whence = arg;
@@ -50,7 +54,9 @@ static size_t syscall_arg__scnprintf_whence(char *bf, size_t size,
#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)
+ unsigned long arg,
+ u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
int printed = 0, prot = arg;
@@ -81,7 +87,8 @@ static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
#define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot
static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask __maybe_unused)
+ unsigned long arg, u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
int printed = 0, flags = arg;
@@ -122,7 +129,8 @@ static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
#define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags
static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask __maybe_unused)
+ unsigned long arg, u8 arg_idx __maybe_unused,
+ u8 *arg_mask __maybe_unused)
{
int behavior = arg;
@@ -163,7 +171,8 @@ static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size,
#define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior
-static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, unsigned long arg, u8 *arg_mask)
+static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, unsigned long arg,
+ u8 arg_idx __maybe_unused, u8 *arg_mask)
{
enum syscall_futex_args {
SCF_UADDR = (1 << 0),
@@ -207,12 +216,13 @@ static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, unsigned lo
#define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op
static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size,
- unsigned long arg, u8 *arg_mask)
+ unsigned long arg,
+ u8 arg_idx, u8 *arg_mask)
{
int printed = 0, flags = arg;
if (!(flags & O_CREAT))
- *arg_mask |= 1 << 2; /* Mask the mode parm */
+ *arg_mask |= 1 << (arg_idx + 1); /* Mask the mode parm */
if (flags == 0)
return scnprintf(bf, size, "RDONLY");
@@ -265,7 +275,7 @@ static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size,
static struct syscall_fmt {
const char *name;
const char *alias;
- size_t (*arg_scnprintf[6])(char *bf, size_t size, unsigned long arg, u8 *arg_mask);
+ size_t (*arg_scnprintf[6])(char *bf, size_t size, unsigned long arg, u8 arg_idx, u8 *arg_mask);
bool errmsg;
bool timeout;
bool hexret;
@@ -302,6 +312,10 @@ static struct syscall_fmt {
.arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
{ .name = "open", .errmsg = true,
.arg_scnprintf = { [1] = SCA_OPEN_FLAGS, /* flags */ }, },
+ { .name = "open_by_handle_at", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_OPEN_FLAGS, /* flags */ }, },
+ { .name = "openat", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_OPEN_FLAGS, /* flags */ }, },
{ .name = "poll", .errmsg = true, .timeout = true, },
{ .name = "ppoll", .errmsg = true, .timeout = true, },
{ .name = "pread", .errmsg = true, .alias = "pread64", },
@@ -332,7 +346,7 @@ struct syscall {
bool filtered;
struct syscall_fmt *fmt;
size_t (**arg_scnprintf)(char *bf, size_t size,
- unsigned long arg, u8 *args_mask);
+ unsigned long arg, u8 arg_idx, u8 *args_mask);
};
static size_t fprintf_duration(unsigned long t, FILE *fp)
@@ -589,7 +603,7 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
if (sc->arg_scnprintf && sc->arg_scnprintf[i]) {
printed += sc->arg_scnprintf[i](bf + printed, size - printed,
- args[i], &mask);
+ args[i], i, &mask);
} else {
printed += scnprintf(bf + printed, size - printed,
"%ld", args[i]);
--
1.8.1.4
--
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