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. Change setup_vmstat() to mark N_CPU to the nodes with online CPUs at boot. Signed-off-by: Toshi Kani <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Yasuaki Ishimatsu <[email protected]> --- mm/vmstat.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/vmstat.c b/mm/vmstat.c index 9bb3145..c464a22 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1276,8 +1276,10 @@ static int __init setup_vmstat(void) register_cpu_notifier(&vmstat_notifier); - for_each_online_cpu(cpu) + for_each_online_cpu(cpu) { start_cpu_timer(cpu); + node_set_state(cpu_to_node(cpu), N_CPU); + } #endif #ifdef CONFIG_PROC_FS proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
