From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756130AbaGNP5n (ORCPT ); Mon, 14 Jul 2014 11:57:43 -0400 Received: from mx1.redhat.com ([209.132.183.28]:5304 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755901AbaGNP5g (ORCPT ); Mon, 14 Jul 2014 11:57:36 -0400 From: Jiri Olsa To: linux-kernel@vger.kernel.org Cc: Jiri Olsa , Arnaldo Carvalho de Melo , Corey Ashford , David Ahern , Frederic Weisbecker , Ingo Molnar , Namhyung Kim , Paul Mackerras , Peter Zijlstra Subject: [PATCH] perf: Add vm_ops->name call for mmap event name retrieval Date: Mon, 14 Jul 2014 17:57:19 +0200 Message-Id: <1405353439-14211-1-git-send-email-jolsa@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Following patch added another way to get mmap name: 78d683e mm, fs: Add vm_ops->name as an alternative to arch_vma_name The vdso vma mapping already switch to this and we no longer get vdso name via arch_vma_name function. Adding this way to the perf mmap event name retrieval code. Caught this via perf test: $ sudo ./perf test -v 7 7: Validate PERF_RECORD_* events & perf_sample fields : --- start --- SNIP PERF_RECORD_MMAP for [vdso] missing! test child finished with 255 ---- end ---- Validate PERF_RECORD_* events & perf_sample fields: FAILED! Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Signed-off-by: Jiri Olsa --- kernel/events/core.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index 67e3b9c..4799676 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5266,6 +5266,12 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) goto got_name; } else { + if (vma->vm_ops && vma->vm_ops->name) { + name = (char *) vma->vm_ops->name(vma); + if (name) + goto cpy_name; + } + name = (char *)arch_vma_name(vma); if (name) goto cpy_name; -- 1.8.3.1