From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:4978:20e::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3sp33s1sZRzDrLs for ; Tue, 4 Oct 2016 13:37:45 +1100 (AEDT) From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Linux Weekly News , Andi Kleen , Sukadev Bhattiprolu , Madhavan Srinivasan , Peter Zijlstra , linuxppc-dev@lists.ozlabs.org, Arnaldo Carvalho de Melo Subject: [PATCH 14/22] perf pmu: Add override support for event list CPUID Date: Mon, 3 Oct 2016 23:37:13 -0300 Message-Id: <1475548641-12182-15-git-send-email-acme@kernel.org> In-Reply-To: <1475548641-12182-1-git-send-email-acme@kernel.org> References: <1475548641-12182-1-git-send-email-acme@kernel.org> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Andi Kleen Add a PERF_CPUID variable to override the CPUID of the current CPU (within the current architecture). This is useful for testing, so that all event lists can be tested on a single system. Signed-off-by: Andi Kleen Signed-off-by: Sukadev Bhattiprolu Acked-by: Ingo Molnar Acked-by: Jiri Olsa Cc: Madhavan Srinivasan Cc: Peter Zijlstra Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-10-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/pmu.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 9dc3506d23fc..79242cf9bb79 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -501,10 +501,16 @@ static void pmu_add_cpu_aliases(struct list_head *head) struct pmu_event *pe; char *cpuid; - cpuid = get_cpuid_str(); + cpuid = getenv("PERF_CPUID"); + if (cpuid) + cpuid = strdup(cpuid); + if (!cpuid) + cpuid = get_cpuid_str(); if (!cpuid) return; + pr_debug("Using CPUID %s\n", cpuid); + i = 0; while (1) { map = &pmu_events_map[i++]; -- 2.7.4