Subject: [merged] mm-set-n_cpu-to-node_states-during-boot.patch removed from -mm tree
To: toshi.kani@xxxxxx,cl@xxxxxxxxx,isimatu.yasuaki@xxxxxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 13 Nov 2013 12:39:06 -0800
The patch titled
Subject: mm: set N_CPU to node_states during boot
has been removed from the -mm tree. Its filename was
mm-set-n_cpu-to-node_states-during-boot.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Toshi Kani <toshi.kani@xxxxxx>
Subject: mm: set N_CPU to node_states during boot
After a system booted, N_CPU is not set to any node as has_cpu shows an
empty line.
# cat /sys/devices/system/node/has_cpu
(show-empty-line)
setup_vmstat() registers its CPU notifier callback,
vmstat_cpuup_callback(), which marks N_CPU to a node when a CPU is put
into online. However, setup_vmstat() is called after all CPUs are
launched in the boot sequence.
Changed setup_vmstat() to mark N_CPU to the nodes with online CPUs at
boot, which is consistent with other operations in
vmstat_cpuup_callback(), i.e. start_cpu_timer() and
refresh_zone_stat_thresholds().
Also added get_online_cpus() to protect the for_each_online_cpu() loop.
Signed-off-by: Toshi Kani <toshi.kani@xxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmstat.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN mm/vmstat.c~mm-set-n_cpu-to-node_states-during-boot mm/vmstat.c
--- a/mm/vmstat.c~mm-set-n_cpu-to-node_states-during-boot
+++ a/mm/vmstat.c
@@ -1276,8 +1276,12 @@ static int __init setup_vmstat(void)
register_cpu_notifier(&vmstat_notifier);
- for_each_online_cpu(cpu)
+ get_online_cpus();
+ for_each_online_cpu(cpu) {
start_cpu_timer(cpu);
+ node_set_state(cpu_to_node(cpu), N_CPU);
+ }
+ put_online_cpus();
#endif
#ifdef CONFIG_PROC_FS
proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
_
Patches currently in -mm which might be from toshi.kani@xxxxxx are
origin.patch
linux-next.patch
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