From: Jiri Olsa <jolsa@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Jiri Olsa <jolsa@redhat.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Corey Ashford <cjashfor@linux.vnet.ibm.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@elte.hu>, Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH 08/21] perf: Add new 'paused' attribute
Date: Wed, 25 Sep 2013 14:50:34 +0200 [thread overview]
Message-ID: <1380113447-17144-9-git-send-email-jolsa@redhat.com> (raw)
In-Reply-To: <1380113447-17144-1-git-send-email-jolsa@redhat.com>
Adding new 'paused' perf_event_attr attribute bit. It sets
the initial event state as paused, so it wont get started
until it's triggered by toggling mechanism.
Original-patch-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
---
include/uapi/linux/perf_event.h | 3 ++-
kernel/events/core.c | 3 +++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index b941c21..1539c47 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -278,8 +278,9 @@ struct perf_event_attr {
exclude_callchain_kernel : 1, /* exclude kernel callchains */
exclude_callchain_user : 1, /* exclude user callchains */
mmap2 : 1, /* include mmap with inode data */
+ paused : 1, /* create as paused */
- __reserved_1 : 40;
+ __reserved_1 : 39;
union {
__u32 wakeup_events; /* wakeup every n events */
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 2c8ff93..f5f00a6 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6731,6 +6731,9 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu,
event->state = PERF_EVENT_STATE_INACTIVE;
+ if (attr->paused)
+ event->paused = true;
+
if (task) {
event->attach_state = PERF_ATTACH_TASK;
--
1.7.11.7
next prev parent reply other threads:[~2013-09-25 12:54 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-25 12:50 [RFC 00/21] perf tools: Add toggling events support Jiri Olsa
2013-09-25 12:50 ` [PATCH 01/21] perf tools: Introduce perf_evlist__wait_workload function Jiri Olsa
2013-09-25 12:50 ` [PATCH 02/21] perf tools: Separate sys_perf_event_open call into evsel_open Jiri Olsa
2013-09-25 12:50 ` [PATCH 03/21] perf x86: Update event count properly for read syscall Jiri Olsa
2013-09-25 12:50 ` [PATCH 04/21] perf: Move event state initialization before/behind the pmu add/del calls Jiri Olsa
2013-09-25 12:50 ` [PATCH 05/21] perf: Add event toggle sys_perf_event_open interface Jiri Olsa
2013-09-25 22:36 ` Sukadev Bhattiprolu
2013-09-26 12:27 ` Jiri Olsa
2013-09-25 12:50 ` [PATCH 06/21] perf: Add event toggle ioctl interface Jiri Olsa
2013-09-25 19:46 ` Vince Weaver
2013-09-26 12:30 ` Jiri Olsa
2013-09-26 13:03 ` Vince Weaver
2013-09-25 12:50 ` [PATCH 07/21] perf: Toggle whole group in toggle event overflow Jiri Olsa
2013-09-25 12:50 ` Jiri Olsa [this message]
2013-09-25 22:41 ` [PATCH 08/21] perf: Add new 'paused' attribute Sukadev Bhattiprolu
2013-09-26 12:24 ` Jiri Olsa
2013-09-25 12:50 ` [PATCH 09/21] perf: Account toggle masters for toggled event Jiri Olsa
2013-09-25 12:50 ` [PATCH 10/21] perf: Be more specific on pmu related event init naming Jiri Olsa
2013-09-25 12:50 ` [PATCH 11/21] perf: Split allocation and initialization code Jiri Olsa
2013-09-25 12:50 ` [PATCH 12/21] perf: Support event inheritance for toggle feature Jiri Olsa
2013-09-25 12:50 ` [PATCH 13/21] perf tests: Adding event simple toggling test Jiri Olsa
2013-09-25 12:50 ` [PATCH 14/21] perf tests: Adding event group " Jiri Olsa
2013-09-25 12:50 ` [PATCH 15/21] perf tests: Adding event inherit " Jiri Olsa
2013-09-25 12:50 ` [PATCH 16/21] perf tools: Allow numeric event to change name via name term Jiri Olsa
2013-09-25 12:50 ` [PATCH 17/21] perf tools: Add event_config_optional parsing rule Jiri Olsa
2013-09-25 12:50 ` [PATCH 18/21] perf tools: Rename term related parsing function/variable properly Jiri Olsa
2013-09-25 12:50 ` [PATCH 19/21] perf tools: Carry term string value for symbols events Jiri Olsa
2013-09-25 12:50 ` [PATCH 20/21] perf tools: Add support to parse event on/off toggle terms Jiri Olsa
2013-09-25 12:50 ` [PATCH 21/21] perf tools: Add record/stat support for toggling events Jiri Olsa
2013-09-25 19:12 ` [RFC 00/21] perf tools: Add toggling events support Andi Kleen
2013-09-26 7:03 ` Ingo Molnar
2013-09-26 15:45 ` Andi Kleen
2013-09-26 12:11 ` Jiri Olsa
2013-09-26 11:31 ` Stephane Eranian
2013-09-26 12:20 ` Jiri Olsa
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