From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753857AbZFHVeN (ORCPT ); Mon, 8 Jun 2009 17:34:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755210AbZFHVd6 (ORCPT ); Mon, 8 Jun 2009 17:33:58 -0400 Received: from hera.kernel.org ([140.211.167.34]:40229 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754873AbZFHVd5 (ORCPT ); Mon, 8 Jun 2009 17:33:57 -0400 Date: Mon, 8 Jun 2009 21:33:28 GMT From: tip-bot for Peter Zijlstra To: linux-tip-commits@vger.kernel.org Cc: linux-kernel@vger.kernel.org, acme@redhat.com, hpa@zytor.com, mingo@redhat.com, penberg@cs.helsinki.fi, a.p.zijlstra@chello.nl, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, acme@redhat.com, linux-kernel@vger.kernel.org, a.p.zijlstra@chello.nl, penberg@cs.helsinki.fi, tglx@linutronix.de, mingo@elte.hu In-Reply-To: References: Subject: [tip:perfcounters/core] perf_counter: Add mmap event hooks to mprotect() Message-ID: Git-Commit-ID: dab5855b12411334355ba21349a06700e4ae7a3b X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Mon, 08 Jun 2009 21:33:30 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: dab5855b12411334355ba21349a06700e4ae7a3b Gitweb: http://git.kernel.org/tip/dab5855b12411334355ba21349a06700e4ae7a3b Author: Peter Zijlstra AuthorDate: Mon, 8 Jun 2009 21:11:57 +0300 Committer: Ingo Molnar CommitDate: Mon, 8 Jun 2009 23:10:43 +0200 perf_counter: Add mmap event hooks to mprotect() Some JIT compilers allocate memory for generated code with posix_memalign() + mprotect() so we need to hook into mprotect() to make sure 'perf' is aware that we're executing code in anonymous memory. [ penberg@cs.helsinki.fi: move the hook to sys_mprotect() ] Cc: Arnaldo Carvalho de Melo Signed-off-by: Pekka Enberg LKML-Reference: Signed-off-by: Ingo Molnar --- mm/mprotect.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/mm/mprotect.c b/mm/mprotect.c index 258197b..d80311b 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -299,6 +300,7 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, error = mprotect_fixup(vma, &prev, nstart, tmp, newflags); if (error) goto out; + perf_counter_mmap(vma); nstart = tmp; if (nstart < prev->vm_end)