From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f200.google.com (mail-pf0-f200.google.com [209.85.192.200]) by kanga.kvack.org (Postfix) with ESMTP id B1ADF6B0343 for ; Sun, 7 May 2017 06:18:24 -0400 (EDT) Received: by mail-pf0-f200.google.com with SMTP id c2so41042322pfd.9 for ; Sun, 07 May 2017 03:18:24 -0700 (PDT) Received: from mail-pg0-x243.google.com (mail-pg0-x243.google.com. [2607:f8b0:400e:c05::243]) by mx.google.com with ESMTPS id y5si6951631pgc.212.2017.05.07.03.18.23 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 07 May 2017 03:18:23 -0700 (PDT) Received: by mail-pg0-x243.google.com with SMTP id s62so6547648pgc.0 for ; Sun, 07 May 2017 03:18:23 -0700 (PDT) From: 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> Sender: owner-linux-mm@kvack.org List-ID: 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 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org