lkml.org 
[lkml]   [2009]   [Jul]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] x86: don't clear nodes_states[N_NORMAL_MEMORY] when numa is not compiled in -v2


Alex found:
for x86_64 machine the specjbb2005 still can not run with hugepage

only happens when numa is not compiled in

the root cause: node_set_state will not set it back for us in that case

so don't clear that when numa is not select in config

v2: use node_clear_state instead

Reported-and-Tested-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
arch/x86/mm/init_64.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

Index: linux-2.6/arch/x86/mm/init_64.c
===================================================================
--- linux-2.6.orig/arch/x86/mm/init_64.c
+++ linux-2.6/arch/x86/mm/init_64.c
@@ -598,8 +598,15 @@ void __init paging_init(void)

sparse_memory_present_with_active_regions(MAX_NUMNODES);
sparse_init();
- /* clear the default setting with node 0 */
- nodes_clear(node_states[N_NORMAL_MEMORY]);
+
+ /*
+ * clear the default setting with node 0
+ * note: don't use nodes_clear here, that is really clearing when
+ * numa support is not compiled in, and later node_set_state
+ * will not set it back.
+ */
+ node_clear_state(0, N_NORMAL_MEMORY);
+
free_area_init_nodes(max_zone_pfns);
}



\
 
 \ /
  Last update: 2009-07-08 18:55    [W:0.510 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site