Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754636Ab1E0McG (ORCPT ); Fri, 27 May 2011 08:32:06 -0400 Received: from e28smtp06.in.ibm.com ([122.248.162.6]:56809 "EHLO e28smtp06.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750878Ab1E0McB (ORCPT ); Fri, 27 May 2011 08:32:01 -0400 From: Ankita Garg To: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-pm@lists.linux-foundation.org Cc: ankita@in.ibm.com, svaidy@linux.vnet.ibm.com, thomas.abraham@linaro.org Subject: [PATCH 09/10] mm: Reflect memory region changes in zoneinfo Date: Fri, 27 May 2011 18:01:37 +0530 Message-Id: <1306499498-14263-10-git-send-email-ankita@in.ibm.com> X-Mailer: git-send-email 1.7.4 In-Reply-To: <1306499498-14263-1-git-send-email-ankita@in.ibm.com> References: <1306499498-14263-1-git-send-email-ankita@in.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5451 Lines: 186 This patch modifies the output of /proc/zoneinfo to take the memory regions into into account. Below is the output on the Samsung board booted with 4 regions, each of size 512MB. # cat /proc/zoneinfo Node 0, Region 0, zone Normal pages free 124570 min 388 low 485 high 582 scanned 0 spanned 131072 present 130048 nr_free_pages 124570 nr_inactive_anon 0 nr_active_anon 92 nr_inactive_file 454 nr_active_file 190 nr_unevictable 0 nr_mlock 0 nr_anon_pages 95 nr_mapped 290 nr_file_pages 647 nr_dirty 1 nr_writeback 0 nr_slab_reclaimable 33 nr_slab_unreclaimable 428 nr_page_table_pages 4 nr_kernel_stack 20 nr_unstable 0 nr_bounce 0 nr_vmscan_write 0 nr_writeback_temp 0 nr_isolated_anon 0 nr_isolated_file 0 nr_shmem 0 nr_dirtied 12 nr_written 11 nr_anon_transparent_hugepages 0 protection: (0, 0) pagesets cpu: 0 count: 48 high: 186 batch: 31 vm stats threshold: 6 all_unreclaimable: 0 start_pfn: 262144 inactive_ratio: 1 Node 0, Region 1, zone Normal pages free 131072 min 388 low 485 high 582 scanned 0 spanned 131072 present 130048 nr_free_pages 131072 ..... Node 0, Region 2, zone Normal pages free 131072 min 388 low 485 high 582 scanned 0 spanned 131072 present 130048 nr_free_pages 131072 ..... Node 0, Region 3, zone Normal pages free 57332 min 170 low 212 high 255 scanned 0 spanned 57344 present 56896 nr_free_pages 57332 ..... Signed-off-by: Ankita Garg --- mm/vmstat.c | 29 +++++++++++++++++------------ 1 files changed, 17 insertions(+), 12 deletions(-) diff --git a/mm/vmstat.c b/mm/vmstat.c index 542f8b6..153e25b 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -179,16 +179,18 @@ static void refresh_zone_stat_thresholds(void) */ tolerate_drift = low_wmark_pages(zone) - min_wmark_pages(zone); max_drift = num_online_cpus() * threshold; - if (max_drift > tolerate_drift) + if (max_drift > tolerate_drift) { zone->percpu_drift_mark = high_wmark_pages(zone) + max_drift; + printk("zone %s drift mark %lu \n", zone->name, + zone->percpu_drift_mark); + } } } void set_pgdat_percpu_threshold(pg_data_t *pgdat, int (*calculate_pressure)(struct zone *)) { - struct zone *zone; int cpu; int threshold; int i, p; @@ -669,11 +671,12 @@ static void walk_zones_in_node(struct seq_file *m, pg_data_t *pgdat, #ifdef CONFIG_PROC_FS static void frag_show_print(struct seq_file *m, pg_data_t *pgdat, - struct zone *zone) + mem_region_t *mem_region, struct zone *zone) { int order; - seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name); + seq_printf(m, "Node %d, REG %d, zone %8s ", pgdat->node_id, + mem_region->region, zone->name); for (order = 0; order < MAX_ORDER; ++order) seq_printf(m, "%6lu ", zone->free_area[order].nr_free); seq_putc(m, '\n'); @@ -689,14 +692,15 @@ static int frag_show(struct seq_file *m, void *arg) return 0; } -static void pagetypeinfo_showfree_print(struct seq_file *m, - pg_data_t *pgdat, struct zone *zone) +static void pagetypeinfo_showfree_print(struct seq_file *m, pg_data_t *pgdat, + mem_region_t *mem_region, struct zone *zone) { int order, mtype; for (mtype = 0; mtype < MIGRATE_TYPES; mtype++) { - seq_printf(m, "Node %4d, zone %8s, type %12s ", + seq_printf(m, "Node %4d, Region %d, zone %8s, type %12s ", pgdat->node_id, + mem_region->region, zone->name, migratetype_names[mtype]); for (order = 0; order < MAX_ORDER; ++order) { @@ -731,8 +735,8 @@ static int pagetypeinfo_showfree(struct seq_file *m, void *arg) return 0; } -static void pagetypeinfo_showblockcount_print(struct seq_file *m, - pg_data_t *pgdat, struct zone *zone) +static void pagetypeinfo_showblockcount_print(struct seq_file *m, pg_data_t *pgdat, + mem_region_t *mem_region, struct zone *zone) { int mtype; unsigned long pfn; @@ -759,7 +763,7 @@ static void pagetypeinfo_showblockcount_print(struct seq_file *m, } /* Print counts */ - seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name); + seq_printf(m, "Node %d, Region %d, zone %8s ", pgdat->node_id, mem_region->region, zone->name); for (mtype = 0; mtype < MIGRATE_TYPES; mtype++) seq_printf(m, "%12lu ", count[mtype]); seq_putc(m, '\n'); @@ -969,10 +973,11 @@ static const char * const vmstat_text[] = { }; static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat, - struct zone *zone) + mem_region_t *mem_region, struct zone *zone) { int i; - seq_printf(m, "Node %d, zone %8s", pgdat->node_id, zone->name); + seq_printf(m, "Node %d, Region %d, zone %8s", pgdat->node_id, + mem_region->region, zone->name); seq_printf(m, "\n pages free %lu" "\n min %lu" -- 1.7.4 -- 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/