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Shutemov" , David Rientjes , Zi Yan , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] docs/vm: remove unused 3 items explanation for /proc/vmstat Date: Mon, 16 Nov 2020 17:51:22 +0800 Message-Id: <1605520282-51993-1-git-send-email-alex.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit 5647bc293ab1 ("mm: compaction: Move migration fail/success stats to migrate.c"), removed 3 items in /proc/vmstat. but the docs still has their explanation. let's remove them. "compact_blocks_moved", "compact_pages_moved", "compact_pagemigrate_failed", Signed-off-by: Alex Shi Cc: Jonathan Corbet Cc: Andrew Morton Cc: Yang Shi Cc: "Kirill A. Shutemov" Cc: David Rientjes Cc: Zi Yan Cc: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- Documentation/admin-guide/mm/transhuge.rst | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst index b2acd0d395ca..3b8a336511a4 100644 --- a/Documentation/admin-guide/mm/transhuge.rst +++ b/Documentation/admin-guide/mm/transhuge.rst @@ -401,21 +401,6 @@ compact_fail is incremented if the system tries to compact memory but failed. -compact_pages_moved - is incremented each time a page is moved. If - this value is increasing rapidly, it implies that the system - is copying a lot of data to satisfy the huge page allocation. - It is possible that the cost of copying exceeds any savings - from reduced TLB misses. - -compact_pagemigrate_failed - is incremented when the underlying mechanism - for moving a page failed. - -compact_blocks_moved - is incremented each time memory compaction examines - a huge page aligned range of pages. - It is possible to establish how long the stalls were using the function tracer to record how long was spent in __alloc_pages_nodemask and using the mm_page_alloc tracepoint to identify which allocations were -- 2.29.GIT