Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754911AbbGPLOF (ORCPT ); Thu, 16 Jul 2015 07:14:05 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:53271 "EHLO e28smtp01.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754843AbbGPLOB (ORCPT ); Thu, 16 Jul 2015 07:14:01 -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 , Anshuman Khandual , Stephane Eranian Subject: [PATCH v5 5/7] powerpc/powernv: add event attribute and group to nest pmu Date: Thu, 16 Jul 2015 16:43:24 +0530 Message-Id: <1437045206-7491-6-git-send-email-maddy@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1437045206-7491-1-git-send-email-maddy@linux.vnet.ibm.com> References: <1437045206-7491-1-git-send-email-maddy@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15071611-4790-0000-0000-000009413A32 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3478 Lines: 120 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: Anshuman Khandual Cc: Stephane Eranian Signed-off-by: Madhavan Srinivasan --- arch/powerpc/perf/nest-pmu.c | 65 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) diff --git a/arch/powerpc/perf/nest-pmu.c b/arch/powerpc/perf/nest-pmu.c index c4c08e4dee55..f3418bdec1cd 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(struct property *pp, char *name, struct nest_ima_events *p8_events, int string, u32 val) { @@ -46,6 +57,56 @@ static int nest_event_info(struct property *pp, char *name, 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 both event attribute group and for + * event attributes array. + */ + attr_group = kzalloc(((sizeof(struct attribute *) * (idx + 1)) + + sizeof(*attr_group)), GFP_KERNEL); + if (!attr_group) + return -ENOMEM; + + /* + * Assign memory for event attribute array + */ + attrs = (struct attribute **)(attr_group + 1); + 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_arr, *p8_events; @@ -93,6 +154,7 @@ 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; } @@ -124,6 +186,9 @@ static int nest_pmu_create(struct device_node *dev, int pmu_index) idx++; } + update_events_in_group( + (struct nest_ima_events *)p8_events_arr, 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/