Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751554AbaAPXyM (ORCPT ); Thu, 16 Jan 2014 18:54:12 -0500 Received: from e34.co.us.ibm.com ([32.97.110.152]:60134 "EHLO e34.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751246AbaAPXyH (ORCPT ); Thu, 16 Jan 2014 18:54:07 -0500 From: Cody P Schafer To: Linux PPC Cc: LKML , Peter Zijlstra , Paul Mackerras , Arnaldo Carvalho de Melo , Ingo Molnar , Benjamin Herrenschmidt , Cody P Schafer Subject: [PATCH 1/8] perf: add PMU_RANGE_ATTR() helper for use by sw-like pmus Date: Thu, 16 Jan 2014 15:53:47 -0800 Message-Id: <1389916434-2288-2-git-send-email-cody@linux.vnet.ibm.com> X-Mailer: git-send-email 1.8.5.2 In-Reply-To: <1389916434-2288-1-git-send-email-cody@linux.vnet.ibm.com> References: <1389916434-2288-1-git-send-email-cody@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14011623-1542-0000-0000-0000054CECCE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add PMU_RANGE_ATTR() and PMU_RANGE_RESV() (for reserved areas) which generate functions to extract the relevent bits from event->attr.config{,1,2} for use by sw-like pmus where the 'config{,1,2}' values don't map directly to hardware registers. Signed-off-by: Cody P Schafer --- include/linux/perf_event.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 2e069d1..8646e33 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -870,4 +870,21 @@ _name##_show(struct device *dev, \ \ static struct device_attribute format_attr_##_name = __ATTR_RO(_name) +#define PMU_RANGE_ATTR(name, attr_var, bit_start, bit_end) \ +PMU_FORMAT_ATTR(name, #attr_var ":" #bit_start "-" #bit_end); \ +PMU_RANGE_RESV(name, attr_var, bit_start, bit_end) + +#define PMU_RANGE_RESV(name, attr_var, bit_start, bit_end) \ +static u64 event_get_##name##_max(void) \ +{ \ + int bits = (bit_end) - (bit_start) + 1; \ + return ((0x1ULL << (bits - 1ULL)) - 1ULL) | \ + (0xFULL << (bits - 4ULL)); \ +} \ +static u64 event_get_##name(struct perf_event *event) \ +{ \ + return (event->attr.attr_var >> (bit_start)) & \ + event_get_##name##_max(); \ +} + #endif /* _LINUX_PERF_EVENT_H */ -- 1.8.5.2 -- 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/