Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752595AbbHCHgm (ORCPT ); Mon, 3 Aug 2015 03:36:42 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:47782 "EHLO e28smtp01.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751933AbbHCHgj (ORCPT ); Mon, 3 Aug 2015 03:36:39 -0400 X-Helo: d28dlp03.in.ibm.com X-MailFrom: maddy@linux.vnet.ibm.com X-RcptTo: linux-kernel@vger.kernel.org From: Madhavan Srinivasan To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Cc: Madhavan Srinivasan , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Anton Blanchard , Sukadev Bhattiprolu , Daniel Axtens , Stephane Eranian Subject: [PATCH v7 5/7] powerpc/powernv: add event attribute and group to nest pmu Date: Mon, 3 Aug 2015 13:05:57 +0530 Message-Id: <1438587359-6165-6-git-send-email-maddy@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1438587359-6165-1-git-send-email-maddy@linux.vnet.ibm.com> References: <1438587359-6165-1-git-send-email-maddy@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15080307-4790-0000-0000-00000991E996 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3306 Lines: 116 Add code to create event/format attributes and attribute groups for each nest pmu. Cc: Michael Ellerman Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Anton Blanchard Cc: Sukadev Bhattiprolu Cc: Daniel Axtens Cc: Stephane Eranian Signed-off-by: Madhavan Srinivasan --- arch/powerpc/perf/nest-pmu.c | 61 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/arch/powerpc/perf/nest-pmu.c b/arch/powerpc/perf/nest-pmu.c index 292fc2b91ed0..4a74ffb97741 100644 --- a/arch/powerpc/perf/nest-pmu.c +++ b/arch/powerpc/perf/nest-pmu.c @@ -13,6 +13,17 @@ static struct perchip_nest_info p8_nest_perchip_info[P8_NEST_MAX_CHIPS]; static struct nest_pmu *per_nest_pmu_arr[P8_NEST_MAX_PMUS]; +PMU_FORMAT_ATTR(event, "config:0-20"); +static struct attribute *p8_nest_format_attrs[] = { + &format_attr_event.attr, + NULL, +}; + +static struct attribute_group p8_nest_format_group = { + .name = "format", + .attrs = p8_nest_format_attrs, +}; + static int nest_event_info(char *name, struct nest_ima_events *p8_events) { char *buf; @@ -60,6 +71,53 @@ static int nest_event_info_val(char *name, u32 val, return 0; } +/* + * Populate event name and string in attribute + */ +static struct attribute *dev_str_attr(const char *name, const char *str) +{ + struct perf_pmu_events_attr *attr; + + attr = kzalloc(sizeof(*attr), GFP_KERNEL); + + sysfs_attr_init(&attr->attr.attr); + + attr->event_str = str; + attr->attr.attr.name = name; + attr->attr.attr.mode = 0444; + attr->attr.show = perf_event_sysfs_show; + + return &attr->attr.attr; +} + +static int update_events_in_group( + struct nest_ima_events *p8_events, int idx, struct nest_pmu *pmu) +{ + struct attribute_group *attr_group; + struct attribute **attrs; + int i; + + /* Allocate memory for attribute group */ + attr_group = kzalloc(sizeof(*attr_group), GFP_KERNEL); + if (!attr_group) + return -ENOMEM; + + /* Allocate memory for attributes */ + attrs = kzalloc((sizeof(struct attribute *) * (idx + 1)), GFP_KERNEL); + if (!attrs) + return -ENOMEM; + + attr_group->name = "events"; + attr_group->attrs = attrs; + + for (i = 0; i < idx; i++, p8_events++) + attrs[i] = dev_str_attr((char *)p8_events->ev_name, + (char *)p8_events->ev_value); + + pmu->attr_groups[0] = attr_group; + return 0; +} + static int nest_pmu_create(struct device_node *dev, int pmu_index) { struct nest_ima_events *p8_events; @@ -105,6 +163,7 @@ static int nest_pmu_create(struct device_node *dev, int pmu_index) /* Save the name to register it later */ sprintf(buf, "Nest_%s", (char *)pp->value); pmu_ptr->pmu.name = (char *)buf; + pmu_ptr->attr_groups[1] = &p8_nest_format_group; continue; } @@ -136,6 +195,8 @@ static int nest_pmu_create(struct device_node *dev, int pmu_index) idx++; } + update_events_in_group(p8_events, idx, pmu_ptr); + return 0; } -- 1.9.1 -- 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/