From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e39.co.us.ibm.com (e39.co.us.ibm.com [32.97.110.160]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id C06702C0236 for ; Thu, 6 Mar 2014 11:01:50 +1100 (EST) Received: from /spool/local by e39.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 5 Mar 2014 17:01:47 -0700 Received: from b01cxnp22034.gho.pok.ibm.com (b01cxnp22034.gho.pok.ibm.com [9.57.198.24]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id 3209938C8067 for ; Wed, 5 Mar 2014 19:01:45 -0500 (EST) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by b01cxnp22034.gho.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s2601jaO3867090 for ; Thu, 6 Mar 2014 00:01:45 GMT Received: from d01av01.pok.ibm.com (localhost [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s2601huP030389 for ; Wed, 5 Mar 2014 19:01:44 -0500 From: Cody P Schafer To: Linux PPC , Arnaldo Carvalho de Melo , Ingo Molnar , Paul Mackerras , Peter Zijlstra 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> 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> Cc: Peter Zijlstra , LKML , Michael Ellerman , scottwood@freescale.com, Cody P Schafer List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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