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perf trace: Beautify sched_setscheduler 'policy' argument

tip:perf/core tip-bot for Arnaldo Carvalho de Melo 1 participant 1 message Apr 13, 2016 perf events

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Commit-ID:  a3bca91f2fe54af502deaf277dd5ac0e18bffde4
Gitweb:     http://git.kernel.org/tip/a3bca91f2fe54af502deaf277dd5ac0e18bffde4
Author:     Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Wed, 6 Apr 2016 12:51:33 -0300
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Wed, 6 Apr 2016 14:13:40 -0300

perf trace: Beautify sched_setscheduler 'policy' argument

  $ trace -e sched_setscheduler chrt -f 1 usleep 1
  chrt: failed to set pid 0's policy: Operation not permitted
     0.005 ( 0.005 ms): chrt/19189 sched_setscheduler(policy: FIFO, param: 0x7ffec5273d70) = -1 EPERM Operation not permitted
  $
Cc Adrian Hunter <[email protected]>
Cc David Ahern <[email protected]>
Cc Jiri Olsa <[email protected]>
Cc Namhyung Kim <[email protected]>
Cc Wang Nan <[email protected]>
Link http://lkml.kernel.org/n/[email protected] open here
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/builtin-trace.c             |  4 ++++
 tools/perf/trace/beauty/sched_policy.c | 44 ++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)
tools/perf/builtin-trace.c +4 -0
index d309f45..c283153 100644
@@ -1073,6 +1073,8 @@ static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
 	  .arg_scnprintf = { [arg] = SCA_STRARRAY, }, \
 	  .arg_parm	 = { [arg] = &strarray__##array, }
 
+#include "trace/beauty/sched_policy.c"
+
 static struct syscall_fmt {
 	const char *name;
 	const char *alias;

@@ -1304,6 +1306,8 @@ static struct syscall_fmt {
 	  .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
 	{ .name	    = "rt_tgsigqueueinfo", .errmsg = true,
 	  .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
+	{ .name	    = "sched_setscheduler",   .errmsg = true,
+	  .arg_scnprintf = { [1] = SCA_SCHED_POLICY, /* policy */ }, },
 	{ .name	    = "seccomp", .errmsg = true,
 	  .arg_scnprintf = { [0] = SCA_SECCOMP_OP, /* op */
 			     [1] = SCA_SECCOMP_FLAGS, /* flags */ }, },
tools/perf/trace/beauty/sched_policy.c new file +44 -0

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