From: Nigel Cunningham <ncunningham@linuxmail.org>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: [PATCH] SMP support for drain local pages.
Date: Wed, 26 May 2004 20:39:51 +1000 [thread overview]
Message-ID: <40B473F7.4000100@linuxmail.org> (raw)
From: Nigel Cunningham <ncunningham@linuxmail.org>
Hi.
This patch adds SMP support for drain_local_pages, so that suspend
implementations can drain pcp structures on all CPUs and thus accurately
determine which pages are free.
Please apply.
diff -ruN 2.6.6-current-bk/mm/page_alloc.c smp-drain-local-pages/mm/page_alloc.c
--- 2.6.6-current-bk/mm/page_alloc.c 2004-05-26 19:47:15.000000000 +1000
+++ smp-drain-local-pages/mm/page_alloc.c 2004-05-26 19:56:19.000000000 +1000
@@ -459,6 +459,24 @@
__drain_pages(smp_processor_id());
local_irq_restore(flags);
}
+
+#ifdef CONFIG_SMP
+static void __smp_drain_local_pages(void * data)
+{
+ drain_local_pages();
+}
+
+void smp_drain_local_pages(void)
+{
+ smp_call_function(__smp_drain_local_pages, NULL, 0, 1);
+ drain_local_pages();
+}
+#else
+void smp_drain_local_pages(void)
+{
+ drain_local_pages();
+}
+#endif
#endif /* CONFIG_PM */
static void zone_statistics(struct zonelist *zonelist, struct zone *z)
next reply other threads:[~2004-05-26 22:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-26 10:39 Nigel Cunningham [this message]
2004-05-26 22:32 ` [PATCH] SMP support for drain local pages Dave Jones
2004-05-26 22:56 ` [PATCH] SMP support for drain local pages v2 Nigel Cunningham
2004-05-26 23:26 ` Andrew Morton
2004-05-26 23:38 ` Nigel Cunningham
2004-05-26 23:56 ` Andrew Morton
2004-05-26 23:56 ` Nigel Cunningham
2004-05-27 19:29 ` Pavel Machek
2004-05-27 21:22 ` Nigel Cunningham
2004-05-27 19:25 ` [PATCH] SMP support for drain local pages Pavel Machek
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