From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754236AbcEaNLT (ORCPT ); Tue, 31 May 2016 09:11:19 -0400 Received: from mx2.suse.de ([195.135.220.15]:38199 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754062AbcEaNIi (ORCPT ); Tue, 31 May 2016 09:08:38 -0400 From: Vlastimil Babka To: Michal Hocko , Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mel Gorman , Joonsoo Kim , David Rientjes , Rik van Riel , Vlastimil Babka Subject: [PATCH v2 10/18] mm, compaction: cleanup unused functions Date: Tue, 31 May 2016 15:08:10 +0200 Message-Id: <20160531130818.28724-11-vbabka@suse.cz> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20160531130818.28724-1-vbabka@suse.cz> References: <20160531130818.28724-1-vbabka@suse.cz> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since kswapd compaction moved to kcompactd, compact_pgdat() is not called anymore, so we remove it. The only caller of __compact_pgdat() is compact_node(), so we merge them and remove code that was only reachable from kswapd. Signed-off-by: Vlastimil Babka --- include/linux/compaction.h | 5 ---- mm/compaction.c | 60 +++++++++++++--------------------------------- 2 files changed, 17 insertions(+), 48 deletions(-) diff --git a/include/linux/compaction.h b/include/linux/compaction.h index b3bb66e7ce55..22a5fb9c509c 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -70,7 +70,6 @@ extern int fragmentation_index(struct zone *zone, unsigned int order); extern enum compact_result try_to_compact_pages(gfp_t gfp_mask, unsigned int order, unsigned int alloc_flags, const struct alloc_context *ac, enum compact_priority prio); -extern void compact_pgdat(pg_data_t *pgdat, int order); extern void reset_isolation_suitable(pg_data_t *pgdat); extern enum compact_result compaction_suitable(struct zone *zone, int order, unsigned int alloc_flags, int classzone_idx); @@ -154,10 +153,6 @@ extern void kcompactd_stop(int nid); extern void wakeup_kcompactd(pg_data_t *pgdat, int order, int classzone_idx); #else -static inline void compact_pgdat(pg_data_t *pgdat, int order) -{ -} - static inline void reset_isolation_suitable(pg_data_t *pgdat) { } diff --git a/mm/compaction.c b/mm/compaction.c index 78c99300b911..af50f20de369 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1678,10 +1678,18 @@ enum compact_result try_to_compact_pages(gfp_t gfp_mask, unsigned int order, /* Compact all zones within a node */ -static void __compact_pgdat(pg_data_t *pgdat, struct compact_control *cc) +static void compact_node(int nid) { + pg_data_t *pgdat = NODE_DATA(nid); int zoneid; struct zone *zone; + struct compact_control cc = { + .order = -1, + .mode = MIGRATE_SYNC, + .ignore_skip_hint = true, + .whole_zone = true, + }; + for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) { @@ -1689,53 +1697,19 @@ static void __compact_pgdat(pg_data_t *pgdat, struct compact_control *cc) if (!populated_zone(zone)) continue; - cc->nr_freepages = 0; - cc->nr_migratepages = 0; - cc->zone = zone; - INIT_LIST_HEAD(&cc->freepages); - INIT_LIST_HEAD(&cc->migratepages); - - if (is_via_compact_memory(cc->order) || - !compaction_deferred(zone, cc->order)) - compact_zone(zone, cc); - - VM_BUG_ON(!list_empty(&cc->freepages)); - VM_BUG_ON(!list_empty(&cc->migratepages)); + cc.nr_freepages = 0; + cc.nr_migratepages = 0; + cc.zone = zone; + INIT_LIST_HEAD(&cc.freepages); + INIT_LIST_HEAD(&cc.migratepages); - if (is_via_compact_memory(cc->order)) - continue; + compact_zone(zone, &cc); - if (zone_watermark_ok(zone, cc->order, - low_wmark_pages(zone), 0, 0)) - compaction_defer_reset(zone, cc->order, false); + VM_BUG_ON(!list_empty(&cc.freepages)); + VM_BUG_ON(!list_empty(&cc.migratepages)); } } -void compact_pgdat(pg_data_t *pgdat, int order) -{ - struct compact_control cc = { - .order = order, - .mode = MIGRATE_ASYNC, - }; - - if (!order) - return; - - __compact_pgdat(pgdat, &cc); -} - -static void compact_node(int nid) -{ - struct compact_control cc = { - .order = -1, - .mode = MIGRATE_SYNC, - .ignore_skip_hint = true, - .whole_zone = true, - }; - - __compact_pgdat(NODE_DATA(nid), &cc); -} - /* Compact all nodes in the system */ static void compact_nodes(void) { -- 2.8.3 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f72.google.com (mail-lf0-f72.google.com [209.85.215.72]) by kanga.kvack.org (Postfix) with ESMTP id 0C7C66B0269 for ; Tue, 31 May 2016 09:08:58 -0400 (EDT) Received: by mail-lf0-f72.google.com with SMTP id h68so64433120lfh.2 for ; Tue, 31 May 2016 06:08:57 -0700 (PDT) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id x187si36847657wmd.86.2016.05.31.06.08.36 for (version=TLS1 cipher=AES128-SHA bits=128/128); Tue, 31 May 2016 06:08:36 -0700 (PDT) From: Vlastimil Babka Subject: [PATCH v2 10/18] mm, compaction: cleanup unused functions Date: Tue, 31 May 2016 15:08:10 +0200 Message-Id: <20160531130818.28724-11-vbabka@suse.cz> In-Reply-To: <20160531130818.28724-1-vbabka@suse.cz> References: <20160531130818.28724-1-vbabka@suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko , Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mel Gorman , Joonsoo Kim , David Rientjes , Rik van Riel , Vlastimil Babka Since kswapd compaction moved to kcompactd, compact_pgdat() is not called anymore, so we remove it. The only caller of __compact_pgdat() is compact_node(), so we merge them and remove code that was only reachable from kswapd. Signed-off-by: Vlastimil Babka --- include/linux/compaction.h | 5 ---- mm/compaction.c | 60 +++++++++++++--------------------------------- 2 files changed, 17 insertions(+), 48 deletions(-) diff --git a/include/linux/compaction.h b/include/linux/compaction.h index b3bb66e7ce55..22a5fb9c509c 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -70,7 +70,6 @@ extern int fragmentation_index(struct zone *zone, unsigned int order); extern enum compact_result try_to_compact_pages(gfp_t gfp_mask, unsigned int order, unsigned int alloc_flags, const struct alloc_context *ac, enum compact_priority prio); -extern void compact_pgdat(pg_data_t *pgdat, int order); extern void reset_isolation_suitable(pg_data_t *pgdat); extern enum compact_result compaction_suitable(struct zone *zone, int order, unsigned int alloc_flags, int classzone_idx); @@ -154,10 +153,6 @@ extern void kcompactd_stop(int nid); extern void wakeup_kcompactd(pg_data_t *pgdat, int order, int classzone_idx); #else -static inline void compact_pgdat(pg_data_t *pgdat, int order) -{ -} - static inline void reset_isolation_suitable(pg_data_t *pgdat) { } diff --git a/mm/compaction.c b/mm/compaction.c index 78c99300b911..af50f20de369 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1678,10 +1678,18 @@ enum compact_result try_to_compact_pages(gfp_t gfp_mask, unsigned int order, /* Compact all zones within a node */ -static void __compact_pgdat(pg_data_t *pgdat, struct compact_control *cc) +static void compact_node(int nid) { + pg_data_t *pgdat = NODE_DATA(nid); int zoneid; struct zone *zone; + struct compact_control cc = { + .order = -1, + .mode = MIGRATE_SYNC, + .ignore_skip_hint = true, + .whole_zone = true, + }; + for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) { @@ -1689,53 +1697,19 @@ static void __compact_pgdat(pg_data_t *pgdat, struct compact_control *cc) if (!populated_zone(zone)) continue; - cc->nr_freepages = 0; - cc->nr_migratepages = 0; - cc->zone = zone; - INIT_LIST_HEAD(&cc->freepages); - INIT_LIST_HEAD(&cc->migratepages); - - if (is_via_compact_memory(cc->order) || - !compaction_deferred(zone, cc->order)) - compact_zone(zone, cc); - - VM_BUG_ON(!list_empty(&cc->freepages)); - VM_BUG_ON(!list_empty(&cc->migratepages)); + cc.nr_freepages = 0; + cc.nr_migratepages = 0; + cc.zone = zone; + INIT_LIST_HEAD(&cc.freepages); + INIT_LIST_HEAD(&cc.migratepages); - if (is_via_compact_memory(cc->order)) - continue; + compact_zone(zone, &cc); - if (zone_watermark_ok(zone, cc->order, - low_wmark_pages(zone), 0, 0)) - compaction_defer_reset(zone, cc->order, false); + VM_BUG_ON(!list_empty(&cc.freepages)); + VM_BUG_ON(!list_empty(&cc.migratepages)); } } -void compact_pgdat(pg_data_t *pgdat, int order) -{ - struct compact_control cc = { - .order = order, - .mode = MIGRATE_ASYNC, - }; - - if (!order) - return; - - __compact_pgdat(pgdat, &cc); -} - -static void compact_node(int nid) -{ - struct compact_control cc = { - .order = -1, - .mode = MIGRATE_SYNC, - .ignore_skip_hint = true, - .whole_zone = true, - }; - - __compact_pgdat(NODE_DATA(nid), &cc); -} - /* Compact all nodes in the system */ static void compact_nodes(void) { -- 2.8.3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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