linux-kernel - [RFC] memory hotremove patch take 2 [03/10] (drain all pages)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 09 May 2007 12:10:50 +0900
From:	Yasunori Goto <y-goto@...fujitsu.com>
To:	Linux Kernel ML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Cc:	Andrew Morton <akpm@...l.org>,
	Christoph Lameter <clameter@....com>,
	Mel Gorman <mel@....ul.ie>
Subject: [RFC] memory hotremove patch take 2 [03/10] (drain all pages)

This patch add function drain_all_pages(void) to drain all 
pages on per-cpu-freelist.
Page isolation will catch them in free_one_page.

Signed-Off-By: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Signed-off-by: Yasunori Goto <y-goto@...fujitsu.com>

 include/linux/page_isolation.h |    1 +
 mm/page_alloc.c                |   13 +++++++++++++
 2 files changed, 14 insertions(+)

Index: current_test/mm/page_alloc.c
===================================================================
--- current_test.orig/mm/page_alloc.c	2007-05-08 15:08:03.000000000 +0900
+++ current_test/mm/page_alloc.c	2007-05-08 15:08:33.000000000 +0900
@@ -1070,6 +1070,19 @@ void drain_all_local_pages(void)
 	smp_call_function(smp_drain_local_pages, NULL, 0, 1);
 }
 
+#ifdef CONFIG_PAGE_ISOLATION
+static void drain_local_zone_pages(struct work_struct *work)
+{
+	drain_local_pages();
+}
+
+void drain_all_pages(void)
+{
+	schedule_on_each_cpu(drain_local_zone_pages);
+}
+
+#endif /* CONFIG_PAGE_ISOLATION */
+
 /*
  * Free a 0-order page
  */
Index: current_test/include/linux/page_isolation.h
===================================================================
--- current_test.orig/include/linux/page_isolation.h	2007-05-08 15:08:03.000000000 +0900
+++ current_test/include/linux/page_isolation.h	2007-05-08 15:08:33.000000000 +0900
@@ -39,6 +39,7 @@ extern void detach_isolation_info_zone(s
 extern void free_isolation_info(struct isolation_info *info);
 extern void unuse_all_isolated_pages(struct isolation_info *info);
 extern void free_all_isolated_pages(struct isolation_info *info);
+extern void drain_all_pages(void);
 
 #else
 

-- 
Yasunori Goto 


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/