From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754757AbdEGXbE (ORCPT ); Sun, 7 May 2017 19:31:04 -0400 Received: from mail-pg0-f66.google.com ([74.125.83.66]:35163 "EHLO mail-pg0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754352AbdEGXbC (ORCPT ); Sun, 7 May 2017 19:31:02 -0400 From: SeongJae Park To: akpm@linux-foundation.org, kirill.shutemov@linux.intel.com Cc: hannes@cmpxchg.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, SeongJae Park Subject: [PATCH] mm/khugepaged: Add missed tracepoint for collapse_huge_page_swapin Date: Sun, 7 May 2017 19:18:13 +0900 Message-Id: <20170507101813.30187-1-sj38.park@gmail.com> X-Mailer: git-send-email 2.12.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org One return case of `__collapse_huge_page_swapin()` does not invoke tracepoint while every other return case does. This commit adds a tracepoint invocation for the case. Signed-off-by: SeongJae Park --- mm/khugepaged.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index ba40b7f673f4..9aad377c67a8 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -909,8 +909,10 @@ static bool __collapse_huge_page_swapin(struct mm_struct *mm, return false; } /* check if the pmd is still valid */ - if (mm_find_pmd(mm, address) != pmd) + if (mm_find_pmd(mm, address) != pmd) { + trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, 0); return false; + } } if (ret & VM_FAULT_ERROR) { trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, 0); -- 2.12.0