Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753528AbbLIVnl (ORCPT ); Wed, 9 Dec 2015 16:43:41 -0500 Received: from mail-pa0-f52.google.com ([209.85.220.52]:32786 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752574AbbLIVmY (ORCPT ); Wed, 9 Dec 2015 16:42:24 -0500 From: Yang Shi To: akpm@linux-foundation.org, rostedt@goodmis.org, mingo@redhat.com Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linaro-kernel@lists.linaro.org, yang.shi@linaro.org, Thomas Gleixner , "H. Peter Anvin" , x86@kernel.org Subject: [PATCH v5 3/7] x86: mm/gup: add gup trace points Date: Wed, 9 Dec 2015 13:22:27 -0800 Message-Id: <1449696151-4195-4-git-send-email-yang.shi@linaro.org> X-Mailer: git-send-email 2.0.2 In-Reply-To: <1449696151-4195-1-git-send-email-yang.shi@linaro.org> References: <1449696151-4195-1-git-send-email-yang.shi@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1388 Lines: 48 Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: x86@kernel.org Signed-off-by: Yang Shi --- arch/x86/mm/gup.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c index ae9a37b..df5f3ab 100644 --- a/arch/x86/mm/gup.c +++ b/arch/x86/mm/gup.c @@ -12,6 +12,8 @@ #include +#include + static inline pte_t gup_get_pte(pte_t *ptep) { #ifndef CONFIG_X86_PAE @@ -270,6 +272,8 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, (void __user *)start, len))) return 0; + trace_gup_get_user_pages_fast(start, nr_pages); + /* * XXX: batch / limit 'nr', to avoid large irq off latency * needs some instrumenting to determine the common sizes used by @@ -373,6 +377,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, } while (pgdp++, addr = next, addr != end); local_irq_enable(); + trace_gup_get_user_pages_fast(start, nr_pages); + VM_BUG_ON(nr != (end - start) >> PAGE_SHIFT); return nr; -- 2.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/