From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 933FF2C00B2 for ; Fri, 17 Jan 2014 10:54:09 +1100 (EST) Received: from /spool/local by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 16 Jan 2014 16:54:06 -0700 Received: from b03cxnp08027.gho.boulder.ibm.com (b03cxnp08027.gho.boulder.ibm.com [9.17.130.19]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id 6AB161FF0021 for ; Thu, 16 Jan 2014 16:53:32 -0700 (MST) Received: from d03av04.boulder.ibm.com (d03av04.boulder.ibm.com [9.17.195.170]) by b03cxnp08027.gho.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s0GNrp0T7537028 for ; Fri, 17 Jan 2014 00:53:51 +0100 Received: from d03av04.boulder.ibm.com (loopback [127.0.0.1]) by d03av04.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s0GNs2IT015420 for ; Thu, 16 Jan 2014 16:54:03 -0700 From: Cody P Schafer To: Linux PPC 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> 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> Cc: Peter Zijlstra , LKML , Ingo Molnar , Paul Mackerras , Arnaldo Carvalho de Melo , Cody P Schafer List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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