From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753835AbbDNGod (ORCPT ); Tue, 14 Apr 2015 02:44:33 -0400 Received: from e9.ny.us.ibm.com ([32.97.182.139]:33228 "EHLO e9.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753137AbbDNGl2 (ORCPT ); Tue, 14 Apr 2015 02:41:28 -0400 From: Sukadev Bhattiprolu To: mingo@redhat.com, ak@linux.intel.com, Michael Ellerman , Jiri Olsa , Arnaldo Carvalho de Melo Cc: peterz@infradead.org, namhyung@kernel.org, linuxppc-dev@lists.ozlabs.org, Subject: [PATCH v9 06/11] powerpc/perf: Implement get_cpu_str() Date: Mon, 13 Apr 2015 23:40:59 -0700 Message-Id: <1428993665-2133-7-git-send-email-sukadev@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1428993665-2133-1-git-send-email-sukadev@linux.vnet.ibm.com> References: <1428993665-2133-1-git-send-email-sukadev@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15041406-0033-0000-0000-00000243EFCA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With a file ~/.cache/pmu-events/004d0100-core.json describing Power8 PMU events we would need to run: perf stat \ --events-file ~/.cache/pmu-events/004d0100-core.json \ -e pm_cyc sleep 1 With this get_cpu_str(), on Powerpc, we can skip the --events-file option and run: perf stat -e pm_cyc sleep 1 Signed-off-by: Sukadev Bhattiprolu --- Changelog[v9] by Sukadev Bhattiprolu Rebase to 4.0. Changelog[v3]: [Tobias Klauser]: Fix some changelog damage to patch. Changelog[v2]: [Michael Ellerman]: Use PVR instead of AUXV variables --- tools/perf/arch/powerpc/util/header.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c index 6c1b8a7..306bf35 100644 --- a/tools/perf/arch/powerpc/util/header.c +++ b/tools/perf/arch/powerpc/util/header.c @@ -6,6 +6,7 @@ #include "../../util/header.h" #include "../../util/util.h" +#include "../../util/jevents.h" #define mfspr(rn) ({unsigned long rval; \ asm volatile("mfspr %0," __stringify(rn) \ @@ -32,3 +33,14 @@ get_cpuid(char *buffer, size_t sz) } return -1; } + +char * +get_cpu_str(void) +{ + char *bufp; + + if (asprintf(&bufp, "%.8lx-core", mfspr(SPRN_PVR)) < 0) + bufp = NULL; + + return bufp; +} -- 1.7.9.5