linux-kernel - [PATCH 53/57] perf trace: Use strtoul for the fcntl 'cmd' argument

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Date:   Mon, 21 Oct 2019 10:38:30 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Brendan Gregg <brendan.d.gregg@...il.com>,
        David Ahern <dsahern@...il.com>,
        Luis Cláudio Gonçalves 
        <lclaudio@...hat.com>
Subject: [PATCH 53/57] perf trace: Use strtoul for the fcntl 'cmd' argument

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

Since its values are in two ranges of values we ended up codifying it
using a 'struct strarrays', so now hook it up with STUL_STRARRAYS so
that we can do:

  # perf trace -e syscalls:*enter_fcntl --filter=cmd==SETLK||cmd==SETLKW
     0.000 sssd_kcm/19021 syscalls:sys_enter_fcntl(fd: 13</var/lib/sss/secrets/secrets.ldb>, cmd: SETLK, arg: 0x7ffcf0a4dee0)
     1.523 sssd_kcm/19021 syscalls:sys_enter_fcntl(fd: 13</var/lib/sss/secrets/secrets.ldb>, cmd: SETLK, arg: 0x7ffcf0a4de90)
     1.629 sssd_kcm/19021 syscalls:sys_enter_fcntl(fd: 13</var/lib/sss/secrets/secrets.ldb>, cmd: SETLK, arg: 0x7ffcf0a4de90)
     2.711 sssd_kcm/19021 syscalls:sys_enter_fcntl(fd: 13</var/lib/sss/secrets/secrets.ldb>, cmd: SETLK, arg: 0x7ffcf0a4de70)
  ^C#

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Brendan Gregg <brendan.d.gregg@...il.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Link: https://lkml.kernel.org/n/tip-mob96wyzri4r3rvyigqfjv0a@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-trace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 265ea876f00b..72ef3b395504 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -894,7 +894,8 @@ static struct syscall_fmt syscall_fmts[] = {
 	{ .name	    = "fchownat",
 	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
 	{ .name	    = "fcntl",
-	  .arg = { [1] = { .scnprintf = SCA_FCNTL_CMD, /* cmd */
+	  .arg = { [1] = { .scnprintf = SCA_FCNTL_CMD,  /* cmd */
+			   .strtoul   = STUL_STRARRAYS,
 			   .parm      = &strarrays__fcntl_cmds_arrays,
 			   .show_zero = true, },
 		   [2] = { .scnprintf =  SCA_FCNTL_ARG, /* arg */ }, }, },
-- 
2.21.0