From: Nick Piggin <nickpiggin@yahoo.com.au>
To: linux-kernel@vger.kernel.org
Cc: Nick Piggin <nickpiggin@yahoo.com.au>, Andrew Morton <akpm@osdl.org>
Subject: [patch 10/12] mm: page_state fixes
Date: Mon, 21 Nov 2005 08:27:56 -0500 [thread overview]
Message-ID: <20051121124323.14370.21159.sendpatchset@didi.local0.net> (raw)
In-Reply-To: <20051121123906.14370.3039.sendpatchset@didi.local0.net>
read_page_state and __get_page_state only traverse online CPUs, which will
cause results to fluctuate when CPUs are plugged in or out.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c
+++ linux-2.6/mm/page_alloc.c
@@ -1140,12 +1140,11 @@ EXPORT_SYMBOL(nr_pagecache);
DEFINE_PER_CPU(long, nr_pagecache_local) = 0;
#endif
-void __get_page_state(struct page_state *ret, int nr, cpumask_t *cpumask)
+static void __get_page_state(struct page_state *ret, int nr, cpumask_t *cpumask)
{
int cpu = 0;
memset(ret, 0, sizeof(*ret));
- cpus_and(*cpumask, *cpumask, cpu_online_map);
cpu = first_cpu(*cpumask);
while (cpu < NR_CPUS) {
@@ -1198,7 +1197,7 @@ unsigned long read_page_state_offset(uns
unsigned long ret = 0;
int cpu;
- for_each_online_cpu(cpu) {
+ for_each_cpu(cpu) {
unsigned long in;
in = (unsigned long)&per_cpu(page_states, cpu) + offset;
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next prev parent reply other threads:[~2005-11-21 13:27 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-21 11:37 [patch 0/12] mm: optimisations Nick Piggin
2005-11-21 11:41 ` [patch 11/12] mm: page_alloc cleanups Nick Piggin
2005-11-21 12:00 ` [patch 7/12] mm: bad_page opt Nick Piggin
2005-11-21 12:00 ` [patch 8/12] mm: remove pcp low Nick Piggin
2005-11-21 12:07 ` [patch 9/12] mm: page_state opt Nick Piggin
2005-11-22 7:54 ` Andrew Morton
2005-11-22 9:04 ` Nick Piggin
2005-11-22 8:08 ` Andrew Morton
2005-11-21 12:08 ` [patch 12/12] mm: rmap opt Nick Piggin
2005-11-22 19:19 ` Hugh Dickins
2005-11-23 0:07 ` Nick Piggin
2005-11-21 13:07 ` [patch 2/12] mm: pagealloc opt Nick Piggin
2005-11-21 13:08 ` [patch 4/12] mm: set_page_refs opt Nick Piggin
2005-11-21 13:23 ` [patch 1/12] mm: free_pages_and_swap_cache opt Nick Piggin
2005-11-21 13:25 ` [patch 5/12] mm: microopt conditions Nick Piggin
2005-11-21 13:27 ` Nick Piggin [this message]
2005-11-21 14:29 ` [patch 0/12] mm: optimisations Paul Jackson
2005-11-22 0:26 ` Nick Piggin
2005-11-21 15:10 ` [patch 3/12] mm: release opt Nick Piggin
2005-11-21 15:12 ` [patch 6/12] mm: remove bad_range Nick Piggin
2005-11-22 12:32 ` Dave Hansen
2005-11-23 2:09 ` Nick Piggin
2005-11-22 8:06 ` [patch 0/12] mm: optimisations Andrew Morton
2005-11-22 10:51 ` Nick Piggin
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