From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757963AbaCFAEy (ORCPT ); Wed, 5 Mar 2014 19:04:54 -0500 Received: from e7.ny.us.ibm.com ([32.97.182.137]:57402 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757330AbaCFABw (ORCPT ); Wed, 5 Mar 2014 19:01:52 -0500 From: Cody P Schafer To: Linux PPC , Arnaldo Carvalho de Melo , Ingo Molnar , Paul Mackerras , Peter Zijlstra Cc: LKML , Benjamin Herrenschmidt , Michael Ellerman , scottwood@freescale.com, Peter Zijlstra , Cody P Schafer Subject: [PATCH v4 02/11] perf: add PMU_FORMAT_RANGE() helper for use by sw-like pmus Date: Wed, 5 Mar 2014 16:01:01 -0800 Message-Id: <1394064082-6242-3-git-send-email-cody@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1394064082-6242-1-git-send-email-cody@linux.vnet.ibm.com> References: <1394064082-6242-1-git-send-email-cody@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14030600-5806-0000-0000-000024488EFB Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add PMU_FORMAT_RANGE() and PMU_FORMAT_RANGE_RESERVED() (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 | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index e56b07f..5c12009 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -871,4 +871,27 @@ _name##_show(struct device *dev, \ \ static struct device_attribute format_attr_##_name = __ATTR_RO(_name) +#define format_max(name) FORMAT_MAX_(name)() +#define FORMAT_MAX_(name) format_##name##_max + +#define format_get(name, event) FORMAT_GET_(name)(event) +#define FORMAT_GET_(name) format_get_##name + +#define PMU_FORMAT_RANGE(name, attr_var, bit_start, bit_end) \ +PMU_FORMAT_RANGE_RESERVED(name, attr_var, bit_start, bit_end) \ +PMU_FORMAT_ATTR(name, #attr_var ":" #bit_start "-" #bit_end) + +#define PMU_FORMAT_RANGE_RESERVED(name, attr_var, bit_start, bit_end) \ +static u64 FORMAT_MAX_(name)(void) \ +{ \ + BUILD_BUG_ON((bit_start > bit_end) \ + || (bit_end >= (sizeof(1ull) * 8))); \ + return (((1ull << (bit_end - bit_start)) - 1) << 1) + 1; \ +} \ +static u64 FORMAT_GET_(name)(struct perf_event *event) \ +{ \ + return (event->attr.attr_var >> (bit_start)) & \ + format_max(name); \ +} + #endif /* _LINUX_PERF_EVENT_H */ -- 1.9.0