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From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: "Clark Williams" <williams@redhat.com>,
	linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
	"Arnaldo Carvalho de Melo" <acme@redhat.com>,
	"Adrian Hunter" <adrian.hunter@intel.com>,
	"Jiri Olsa" <jolsa@kernel.org>,
	"Luis Cláudio Gonçalves" <lclaudio@redhat.com>,
	"Namhyung Kim" <namhyung@kernel.org>,
	"Wang Nan" <wangnan0@huawei.com>
Subject: [PATCH 41/63] perf trace: Allow suppressing the syscall argument names
Date: Tue, 18 Dec 2018 19:07:11 -0300	[thread overview]
Message-ID: <20181218220733.15839-42-acme@kernel.org> (raw)
In-Reply-To: <20181218220733.15839-1-acme@kernel.org>

From: Arnaldo Carvalho de Melo <acme@redhat.com>

To show just the values:

Default:

  # trace -e open*,close,*sleep sleep 1
  openat(dfd: CWD, filename: /etc/ld.so.cache, flags: CLOEXEC           ) = 3
  close(fd: 3                                                           ) = 0
  openat(dfd: CWD, filename: /lib64/libc.so.6, flags: CLOEXEC           ) = 3
  close(fd: 3                                                           ) = 0
  openat(dfd: CWD, filename: /usr/lib/locale/locale-archive, flags: CLOEXEC) = 3
  close(fd: 3                                                           ) = 0
  nanosleep(rqtp: 0x7ffc0c4ea0d0, rmtp: 0                               ) = 0
  close(fd: 1                                                           ) = 0
  close(fd: 2                                                           ) = 0
  #

Remove it:

  # perf config trace.show_arg_names=no
  # trace -e open*,close,*sleep sleep 1
  openat(CWD, /etc/ld.so.cache, CLOEXEC                                 ) = 3
  close(3                                                               ) = 0
  openat(CWD, /lib64/libc.so.6, CLOEXEC                                 ) = 3
  close(3                                                               ) = 0
  openat(CWD, /usr/lib/locale/locale-archive, CLOEXEC                   ) = 3
  close(3                                                               ) = 0
  nanosleep(0x7ffced3a8c40, 0                                           ) = 0
  close(1                                                               ) = 0
  close(2                                                               ) = 0
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-ta9tbdwgodpw719sr2bjm8eb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/perf-config.txt |  4 ++++
 tools/perf/builtin-trace.c               | 22 ++++++++++++++++++----
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index ecd1e9514925..35108fd61fa6 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -532,6 +532,10 @@ trace.*::
 	trace.no_inherit::
 		Do not follow children threads.
 
+	trace.show_arg_names::
+		Should syscall argument names be printed? If not then trace.show_zeros
+		will be set.
+
 	trace.show_duration::
 		Show syscall duration.
 
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index e978ce034863..95dfcb851604 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -130,6 +130,7 @@ struct trace {
 	bool			show_tstamp;
 	bool			show_duration;
 	bool			show_zeros;
+	bool			show_arg_names;
 	bool			force;
 	bool			vfs_getname;
 	int			trace_pgfaults;
@@ -1613,8 +1614,11 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
 			      sc->arg_fmt[arg.idx].parm))
 				continue;
 
-			printed += scnprintf(bf + printed, size - printed,
-					     "%s%s: ", printed ? ", " : "", field->name);
+			printed += scnprintf(bf + printed, size - printed, "%s", printed ? ", " : "");
+
+			if (trace->show_arg_names)
+				printed += scnprintf(bf + printed, size - printed, "%s: ", field->name);
+
 			printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val);
 		}
 	} else if (IS_ERR(sc->tp_format)) {
@@ -3546,12 +3550,21 @@ static int trace__config(const char *var, const char *value, void *arg)
 		trace->show_tstamp = perf_config_bool(var, value);
 	} else if (!strcmp(var, "trace.show_duration")) {
 		trace->show_duration = perf_config_bool(var, value);
+	} else if (!strcmp(var, "trace.show_arg_names")) {
+		trace->show_arg_names = perf_config_bool(var, value);
+		if (!trace->show_arg_names)
+			trace->show_zeros = true;
 	} else if (!strcmp(var, "trace.show_zeros")) {
-		trace->show_zeros = perf_config_bool(var, value);
+		bool new_show_zeros = perf_config_bool(var, value);
+		if (!trace->show_arg_names && !new_show_zeros) {
+			pr_warning("trace.show_zeros has to be set when trace.show_arg_names=no\n");
+			goto out;
+		}
+		trace->show_zeros = new_show_zeros;
 	} else if (!strcmp(var, "trace.no_inherit")) {
 		trace->opts.no_inherit = perf_config_bool(var, value);
 	}
-
+out:
 	return err;
 }
 
@@ -3582,6 +3595,7 @@ int cmd_trace(int argc, const char **argv)
 		.show_comm = true,
 		.show_tstamp = true,
 		.show_duration = true,
+		.show_arg_names = true,
 		.trace_syscalls = false,
 		.kernel_syscallchains = false,
 		.max_stack = UINT_MAX,
-- 
2.19.2


  parent reply	other threads:[~2018-12-18 22:13 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-18 22:06 [GIT PULL 00/63] perf/core improvements and fixes Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 01/63] perf dso: Export data_file_size() method there are no symbols Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 02/63] perf auxtrace: Alter addr_filter__entire_dso() to work if " Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 03/63] perf tests: Use shebangs in the shell scripts Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 04/63] perf stat: Avoid segfaults caused by negated options Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 05/63] tools lib traceevent: Fix processing of dereferenced args in bprintk events Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 06/63] perf trace: Rename delivery functions to ease making ordered_events selectable Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 07/63] perf trace: Allow selecting use the use of the ordered_events code Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 08/63] perf trace beauty: Beautify renameat2's fd arg wrt AT_FDCWD Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 09/63] perf beauty: Add a string table generator for renameat2's flags constants Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 10/63] perf beauty: Wire up the renameat flags table generator to the Makefile Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 11/63] perf trace: Beautify renameat2's flags argument Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 12/63] perf trace beauty: renameat's newdirfd may also be AT_FDCWD Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 13/63] tools lib subcmd: Don't add the kernel sources to the include path Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 14/63] perf tools: Add missing sigqueue() prototype for systems lacking it Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 15/63] perf header: Fix up argument to ctime() Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 16/63] perf tools: Add missing open_memstream() prototype for systems lacking it Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 17/63] perf tools: Cast off_t to s64 to avoid warning on bionic libc Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 18/63] tools lib traceevent: Use LDFLAGS in the build commands Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 19/63] perf tools: Link libperf-jvmti.so with LDFLAGS variable Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 20/63] perf trace: Rename set_ev_qualifier_filter to clarify its a tracepoint filter Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 21/63] perf trace: Avoid using raw_syscalls in duplicity with eBPF augmentation Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 22/63] perf trace: Implement syscall filtering in augmented_syscalls Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 23/63] perf bpf: Move perf_event_output() from stdio.h to bpf.h Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 24/63] perf augmented_syscalls: Switch to using a struct for the syscalls map values Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 25/63] perf trace: Switch to using a struct for the aumented_raw_syscalls " Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 26/63] perf cs-etm: Correct packets swapping in cs_etm__flush() Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 27/63] perf cs-etm: Avoid stale branch samples when flush packet Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 28/63] perf cs-etm: Remove unused 'trace_on' in cs_etm_decoder Arnaldo Carvalho de Melo
2018-12-18 22:06 ` [PATCH 29/63] perf cs-etm: Refactor enumeration cs_etm_sample_type Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 30/63] perf cs-etm: Rename CS_ETM_TRACE_ON to CS_ETM_DISCONTINUITY Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 31/63] perf cs-etm: Treat NO_SYNC element as trace discontinuity Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 32/63] perf cs-etm: Treat EO_TRACE " Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 33/63] perf cs-etm: Generate branch sample for exception packet Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 34/63] perf augmented_raw_syscalls: Do not include stdio.h Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 35/63] perf trace: Allow specifying a set of events to add in perfconfig Arnaldo Carvalho de Melo
2018-12-19  8:40   ` Namhyung Kim
2018-12-19 12:50     ` Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 36/63] perf trace: Allow configuring if zeroed syscall args should be printed Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 37/63] perf trace: Allow configuring if the syscall duration " Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 38/63] perf config: Show the configuration when no arguments are provided Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 39/63] perf trace: Allow configuring default for perf_event_attr.inherit Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 40/63] perf trace: Allow configuring if the syscall start timestamp should be printed Arnaldo Carvalho de Melo
2018-12-18 22:07 ` Arnaldo Carvalho de Melo [this message]
2018-12-18 22:07 ` [PATCH 42/63] perf trace: Make the alignment of the syscall args be configurable Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 43/63] perf trace: Enclose strings with double quotes Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 44/63] perf trace: Add a prefix member to the strarray class Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 45/63] perf trace: Allow asking for not suppressing common string prefixes Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 46/63] perf trace beauty: Print O_RDONLY when (flags & O_ACCMODE) == 0 Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 47/63] perf trace: Add alignment spaces after the closing parens Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 48/63] perf augmented_raw_syscalls: Copy 'access' arg as well Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 49/63] perf trace: Enclose the errno strings with () Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 50/63] perf trace: Show NULL when syscall pointer args are 0 Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 51/63] tools include arch: Grab a copy of x86's prctl.h Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 52/63] perf beauty: Add a string table generator for x86's 'arch_prctl' codes Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 53/63] perf beauty: Wire up the x86_arch prctl code table generator Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 54/63] perf trace: Move strarrays to beauty.h for further reuse Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 55/63] perf trace: When showing string prefixes show prefix + ??? for unknown entries Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 56/63] perf trace beauty: Beautify arch_prctl()'s arguments Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 57/63] perf beauty mmap: Print PROT_READ before PROT_EXEC to match strace output Arnaldo Carvalho de Melo
2018-12-19  9:15   ` Namhyung Kim
2018-12-19 13:10     ` Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 58/63] perf beauty mmap: Print mmap's 'offset' arg in hexadecimal Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 59/63] tools headers uapi: Grab a copy of fadvise.h Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 60/63] perf beauty: Add generator for fadvise64's 'advice' arg constants Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 61/63] perf trace: Wire up the fadvise 'advice' table generator Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 62/63] perf symbols: Relax checks on perf-PID.map ownership Arnaldo Carvalho de Melo
2018-12-18 22:07 ` [PATCH 63/63] tools uapi asm: Update asm-generic/unistd.h copy Arnaldo Carvalho de Melo
2018-12-20 17:53 ` [GIT PULL 00/63] perf/core improvements and fixes Ingo Molnar

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