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perf trace: Beautify eventfd2 'flags' arg

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61.168 ( 0.004 ms): 24267 eventfd2(flags: CLOEXEC|NONBLOCK) = 9

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-3hg8eajdzil077501c8f5jkw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2013-09-12 12:18:56 -03:00
parent b2cc99fdaa
commit 49af9e93ad
1 changed files with 29 additions and 0 deletions
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29
tools/perf/builtin-trace.c
View file

@ -13,6 +13,7 @@
#include <libaudit.h>
#include <stdlib.h>
#include <sys/eventfd.h>
#include <sys/mman.h>
#include <linux/futex.h>
@ -456,6 +457,32 @@ static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size,
#define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags
static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size,
struct syscall_arg *arg)
{
int printed = 0, flags = arg->val;
if (flags == 0)
return scnprintf(bf, size, "NONE");
#define P_FLAG(n) \
if (flags & EFD_##n) { \
printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
flags &= ~EFD_##n; \
}
P_FLAG(SEMAPHORE);
P_FLAG(CLOEXEC);
P_FLAG(NONBLOCK);
#undef P_FLAG
if (flags)
printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
return printed;
}
#define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags
static size_t syscall_arg__scnprintf_signum(char *bf, size_t size, struct syscall_arg *arg)
{
int sig = arg->val;
@ -516,6 +543,8 @@ static struct syscall_fmt {
{ .name = "brk", .hexret = true,
.arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, },
{ .name = "connect", .errmsg = true, },
{ .name = "eventfd2", .errmsg = true,
.arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, },
{ .name = "fcntl", .errmsg = true,
.arg_scnprintf = { [1] = SCA_STRARRAY, /* cmd */ },
.arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, },