| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <tip-83e815ee1c6b5fdb570374404ab44b24c1325ccb@git.kernel.org>
Date: Tue, 10 Dec 2013 01:20:14 -0800
From: tip-bot for Jiri Olsa <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: acme@...hat.com, linux-kernel@...r.kernel.org, paulus@...ba.org,
hpa@...or.com, mingo@...nel.org, a.p.zijlstra@...llo.nl,
namhyung@...nel.org, jolsa@...hat.com, fweisbec@...il.com,
rostedt@...dmis.org, dsahern@...il.com, tglx@...utronix.de,
cjashfor@...ux.vnet.ibm.com, mingo@...e.hu
Subject: [tip:perf/core] tools lib traceevent: Add sched_switch plugin
Commit-ID: 83e815ee1c6b5fdb570374404ab44b24c1325ccb
Gitweb: http://git.kernel.org/tip/83e815ee1c6b5fdb570374404ab44b24c1325ccb
Author: Jiri Olsa <jolsa@...hat.com>
AuthorDate: Tue, 3 Dec 2013 14:09:31 +0100
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 4 Dec 2013 15:31:11 -0300
tools lib traceevent: Add sched_switch plugin
Backporting sched_switch plugin.
Backported from Steven Rostedt's trace-cmd repo (HEAD 0f2c2fb):
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
This plugin adds fields resolving for sched:sched_switch tracepoint
event.
The diff of 'perf script' output generated by old and new code:
(data was generated by 'perf record -e sched:sched_switch -a')
--- script.sched_switch.old
+++ script.sched_switch.new
- perf 577 [002] 30965.311852: sched:sched_switch: prev_comm=perf prev_pid=577 prev_prio=120 prev_state=S ==> next_comm=swapper/2 next_pid=0 next_prio=120
+ perf 577 [002] 30965.311852: sched:sched_switch: perf:577 [120] S ==> swapper/2:0 [120]
Signed-off-by: Jiri Olsa <jolsa@...hat.com>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Steven Rostedt <rostedt@...dmis.org>
Link: http://lkml.kernel.org/r/1386076182-14484-18-git-send-email-jolsa@redhat.com
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/lib/traceevent/Makefile | 1 +
tools/lib/traceevent/plugin_sched_switch.c | 148 +++++++++++++++++++++++++++++
2 files changed, 149 insertions(+)
diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index d0e0ca1..1c319a8 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -217,6 +217,7 @@ PLUGIN_OBJS += plugin_hrtimer.o
PLUGIN_OBJS += plugin_kmem.o
PLUGIN_OBJS += plugin_kvm.o
PLUGIN_OBJS += plugin_mac80211.o
+PLUGIN_OBJS += plugin_sched_switch.o
PLUGINS := $(PLUGIN_OBJS:.o=.so)
diff --git a/tools/lib/traceevent/plugin_sched_switch.c b/tools/lib/traceevent/plugin_sched_switch.c
new file mode 100644
index 0000000..fea3724
--- /dev/null
+++ b/tools/lib/traceevent/plugin_sched_switch.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@...hat.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License (not later!)
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "event-parse.h"
+
+static void write_state(struct trace_seq *s, int val)
+{
+ const char states[] = "SDTtZXxW";
+ int found = 0;
+ int i;
+
+ for (i = 0; i < (sizeof(states) - 1); i++) {
+ if (!(val & (1 << i)))
+ continue;
+
+ if (found)
+ trace_seq_putc(s, '|');
+
+ found = 1;
+ trace_seq_putc(s, states[i]);
+ }
+
+ if (!found)
+ trace_seq_putc(s, 'R');
+}
+
+static void write_and_save_comm(struct format_field *field,
+ struct pevent_record *record,
+ struct trace_seq *s, int pid)
+{
+ const char *comm;
+ int len;
+
+ comm = (char *)(record->data + field->offset);
+ len = s->len;
+ trace_seq_printf(s, "%.*s",
+ field->size, comm);
+
+ /* make sure the comm has a \0 at the end. */
+ trace_seq_terminate(s);
+ comm = &s->buffer[len];
+
+ /* Help out the comm to ids. This will handle dups */
+ pevent_register_comm(field->event->pevent, comm, pid);
+}
+
+static int sched_wakeup_handler(struct trace_seq *s,
+ struct pevent_record *record,
+ struct event_format *event, void *context)
+{
+ struct format_field *field;
+ unsigned long long val;
+
+ if (pevent_get_field_val(s, event, "pid", record, &val, 1))
+ return trace_seq_putc(s, '!');
+
+ field = pevent_find_any_field(event, "comm");
+ if (field) {
+ write_and_save_comm(field, record, s, val);
+ trace_seq_putc(s, ':');
+ }
+ trace_seq_printf(s, "%lld", val);
+
+ if (pevent_get_field_val(s, event, "prio", record, &val, 0) == 0)
+ trace_seq_printf(s, " [%lld]", val);
+
+ if (pevent_get_field_val(s, event, "success", record, &val, 1) == 0)
+ trace_seq_printf(s, " success=%lld", val);
+
+ if (pevent_get_field_val(s, event, "target_cpu", record, &val, 0) == 0)
+ trace_seq_printf(s, " CPU:%03llu", val);
+
+ return 0;
+}
+
+static int sched_switch_handler(struct trace_seq *s,
+ struct pevent_record *record,
+ struct event_format *event, void *context)
+{
+ struct format_field *field;
+ unsigned long long val;
+
+ if (pevent_get_field_val(s, event, "prev_pid", record, &val, 1))
+ return trace_seq_putc(s, '!');
+
+ field = pevent_find_any_field(event, "prev_comm");
+ if (field) {
+ write_and_save_comm(field, record, s, val);
+ trace_seq_putc(s, ':');
+ }
+ trace_seq_printf(s, "%lld ", val);
+
+ if (pevent_get_field_val(s, event, "prev_prio", record, &val, 0) == 0)
+ trace_seq_printf(s, "[%lld] ", val);
+
+ if (pevent_get_field_val(s, event, "prev_state", record, &val, 0) == 0)
+ write_state(s, val);
+
+ trace_seq_puts(s, " ==> ");
+
+ if (pevent_get_field_val(s, event, "next_pid", record, &val, 1))
+ return trace_seq_putc(s, '!');
+
+ field = pevent_find_any_field(event, "next_comm");
+ if (field) {
+ write_and_save_comm(field, record, s, val);
+ trace_seq_putc(s, ':');
+ }
+ trace_seq_printf(s, "%lld", val);
+
+ if (pevent_get_field_val(s, event, "next_prio", record, &val, 0) == 0)
+ trace_seq_printf(s, " [%lld]", val);
+
+ return 0;
+}
+
+int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
+{
+ pevent_register_event_handler(pevent, -1, "sched", "sched_switch",
+ sched_switch_handler, NULL);
+
+ pevent_register_event_handler(pevent, -1, "sched", "sched_wakeup",
+ sched_wakeup_handler, NULL);
+
+ pevent_register_event_handler(pevent, -1, "sched", "sched_wakeup_new",
+ sched_wakeup_handler, NULL);
+ return 0;
+}
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists