Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753865Ab3JWM6s (ORCPT ); Wed, 23 Oct 2013 08:58:48 -0400 Received: from mail-we0-f170.google.com ([74.125.82.170]:44568 "EHLO mail-we0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753824Ab3JWM6n (ORCPT ); Wed, 23 Oct 2013 08:58:43 -0400 From: Stephane Eranian To: linux-kernel@vger.kernel.org Cc: peterz@infradead.org, mingo@elte.hu, ak@linux.intel.com, acme@redhat.com, jolsa@redhat.com, zheng.z.yan@intel.com, bp@alien8.de Subject: [PATCH v3 1/4] perf: add active_entry list head to struct perf_event Date: Wed, 23 Oct 2013 14:58:02 +0200 Message-Id: <1382533085-7166-2-git-send-email-eranian@google.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1382533085-7166-1-git-send-email-eranian@google.com> References: <1382533085-7166-1-git-send-email-eranian@google.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1599 Lines: 45 This patch adds a new fields to the struct perf_event. It is intended to be used to chain events which are active (enabled). It helps in the hardware layer for PMU which do not have actual counter restrictions, i.e., free running read-only counters. Active events are chained as opposed to being tracked via the counter they use. Signed-off-by: Stephane Eranian --- include/linux/perf_event.h | 1 + kernel/events/core.c | 1 + 2 files changed, 2 insertions(+) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 2e069d1..a376384 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -435,6 +435,7 @@ struct perf_event { struct perf_cgroup *cgrp; /* cgroup event is attach to */ int cgrp_defer_enabled; #endif + struct list_head active_entry; #endif /* CONFIG_PERF_EVENTS */ }; diff --git a/kernel/events/core.c b/kernel/events/core.c index 5bd7fe4..6ef9d19 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6629,6 +6629,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu, INIT_LIST_HEAD(&event->event_entry); INIT_LIST_HEAD(&event->sibling_list); INIT_LIST_HEAD(&event->rb_entry); + INIT_LIST_HEAD(&event->active_entry); init_waitqueue_head(&event->waitq); init_irq_work(&event->pending, perf_pending_event); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/