Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753023Ab2KGTTJ (ORCPT ); Wed, 7 Nov 2012 14:19:09 -0500 Received: from e3.ny.us.ibm.com ([32.97.182.143]:34828 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751057Ab2KGTTG (ORCPT ); Wed, 7 Nov 2012 14:19:06 -0500 Date: Wed, 7 Nov 2012 11:19:52 -0800 From: Sukadev Bhattiprolu To: Peter Zijlstra , Paul Mackerras , Ingo Molnar , Arnaldo Carvalho de Melo , Anton Blanchard , robert.richter@amd.com Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/4] perf: Create a sysfs entry for Power event format Message-ID: <20121107191951.GD16211@us.ibm.com> References: <20121107191818.GA16211@us.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20121107191818.GA16211@us.ibm.com> X-Operating-System: Linux 2.0.32 on an i486 User-Agent: Mutt/1.5.20 (2009-06-14) X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12110719-8974-0000-0000-000010CE9AEA X-IBM-ISS-SpamDetectors: X-IBM-ISS-DetailInfo: BY=3.00000295; HX=3.00000198; KW=3.00000007; PH=3.00000001; SC=3.00000008; SDB=6.00189311; UDB=6.00042867; UTC=2012-11-07 19:19:05 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3062 Lines: 88 >From bafc551c31ce23c1cba0b75d23de6c46aba90f26 Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Tue, 6 Nov 2012 16:30:28 -0800 Subject: [PATCH 4/4] perf: Create a sysfs entry for Power event format Create a sysfs entry, '/sys/bus/event_source/devices/cpu/format/event' which describes the format of a POWER cpu. $ cat /sys/bus/event_source/devices/cpu/format/event config:0-20 The format of the event is the same for all POWER cpus, so bulk of this change is in the code common to POWER cpus. Signed-off-by: Sukadev Bhattiprolu --- arch/powerpc/include/asm/perf_event_server.h | 8 ++++++++ arch/powerpc/perf/core-book3s.c | 19 +++++++++++++++++++ arch/powerpc/perf/power7-pmu.c | 1 + 3 files changed, 28 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/include/asm/perf_event_server.h b/arch/powerpc/include/asm/perf_event_server.h index ad84f73..20a49bf 100644 --- a/arch/powerpc/include/asm/perf_event_server.h +++ b/arch/powerpc/include/asm/perf_event_server.h @@ -130,3 +130,11 @@ extern ssize_t power_events_sysfs_show(struct device *dev, .attr = __ATTR(_name, 0444, power_events_sysfs_show, NULL),\ .id = PM_##_id, \ }; + +/* + * Format of a perf event is the same on all POWER cpus. Declare a + * common sysfs attribute group that individual POWER cpus can share. + */ +extern struct attribute_group power_pmu_format_group; + + diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 19b23bd..388e2a1 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -1315,6 +1315,25 @@ ssize_t power_events_sysfs_show(struct device *dev, return sprintf(page, "event=0x%02llx\n", pmu_attr->id); } +static ssize_t power_config_sysfs_show(struct device *dev, + struct device_attribute *attr, char *page) +{ + return sprintf(page, "config:0-20\n"); +} + +static struct device_attribute config_dev_attr = \ + __ATTR(event, 0444, power_config_sysfs_show, NULL); + +static struct attribute *power_pmu_format_attr[] = { + &config_dev_attr.attr, + NULL, +}; + +struct attribute_group power_pmu_format_group = { + .name = "format", + .attrs = power_pmu_format_attr, +}; + struct pmu power_pmu = { .pmu_enable = power_pmu_enable, .pmu_disable = power_pmu_disable, diff --git a/arch/powerpc/perf/power7-pmu.c b/arch/powerpc/perf/power7-pmu.c index 31c61ab..aa9f588 100644 --- a/arch/powerpc/perf/power7-pmu.c +++ b/arch/powerpc/perf/power7-pmu.c @@ -387,6 +387,7 @@ static struct attribute_group power7_pmu_events_group = { }; static const struct attribute_group *power7_pmu_attr_groups[] = { + &power_pmu_format_group, &power7_pmu_events_group, NULL, }; -- 1.7.1 -- 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/