lkml.org 
[lkml]   [2019]   [Jul]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:perf/core] perf trace: Order -e syscalls table
Commit-ID:  83e69b92b10c2a8b75e1919b7074338f8bdbacaf
Gitweb: https://git.kernel.org/tip/83e69b92b10c2a8b75e1919b7074338f8bdbacaf
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Mon, 15 Jul 2019 17:28:25 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 29 Jul 2019 18:34:41 -0300

perf trace: Order -e syscalls table

The ev_qualifier is an array with the syscall ids passed via -e on the
command line, sort it as we'll search it when setting up the
BPF_MAP_TYPE_PROG_ARRAY.

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>
Link: https://lkml.kernel.org/n/tip-c8hprylp3ai6e0z9burn2r3s@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-trace.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index bfd739a321d1..9bd5ecd6a8dd 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1528,6 +1528,13 @@ static int trace__read_syscall_info(struct trace *trace, int id)
return syscall__set_arg_fmts(sc);
}

+static int intcmp(const void *a, const void *b)
+{
+ const int *one = a, *another = b;
+
+ return *one - *another;
+}
+
static int trace__validate_ev_qualifier(struct trace *trace)
{
int err = 0;
@@ -1591,6 +1598,7 @@ matches:
}

trace->ev_qualifier_ids.nr = nr_used;
+ qsort(trace->ev_qualifier_ids.entries, nr_used, sizeof(int), intcmp);
out:
if (printed_invalid_prefix)
pr_debug("\n");
\
 
 \ /
  Last update: 2019-07-30 19:51    [W:0.184 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site