On Thu, 25 Aug 2011, Cong Wang wrote: > Ah, this is because I missed the part in include/linux/node.h. :) > > Below is the updated version. > I've never had a problem building a kernel with CONFIG_NUMA=y and CONFIG_SYSFS=n since most of drivers/base/node.c is just an abstraction that calls into sysfs functions that will be no-ops in such a configuration. The error you cite in a different thread (http://marc.info/?l=linux-mm&m=131098795024186) about an undefined reference to vmstat_text is because you have CONFIG_NUMA enabled and both CONFIG_SYSFS and CONFIG_PROC_FS disabled and we only define vmstat_text for those fs configurations since that's the only way these strings were ever emitted before per-node vmstat. The correct fix is to define the array for CONFIG_NUMA as well. numa: fix NUMA compile error when sysfs and procfs are disabled The vmstat_text array is only defined for CONFIG_SYSFS or CONFIG_PROC_FS, yet it is referenced for per-node vmstat with CONFIG_NUMA: drivers/built-in.o: In function `node_read_vmstat': node.c:(.text+0x1106df): undefined reference to `vmstat_text' in fa25c503dfa2 (mm: per-node vmstat: show proper vmstats). Define the array for CONFIG_NUMA as well. Reported-by: Cong Wang <amwang@xxxxxxxxxx> Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx> --- include/linux/vmstat.h | 2 ++ mm/vmstat.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -258,6 +258,8 @@ static inline void refresh_zone_stat_thresholds(void) { } #endif /* CONFIG_SMP */ +#if defined(CONFIG_PROC_FS) || defined(CONFIG_SYSFS) || defined(CONFIG_NUMA) extern const char * const vmstat_text[]; +#endif #endif /* _LINUX_VMSTAT_H */ diff --git a/mm/vmstat.c b/mm/vmstat.c --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -659,7 +659,7 @@ static void walk_zones_in_node(struct seq_file *m, pg_data_t *pgdat, } #endif -#if defined(CONFIG_PROC_FS) || defined(CONFIG_SYSFS) +#if defined(CONFIG_PROC_FS) || defined(CONFIG_SYSFS) || defined(CONFIG_NUMA) #ifdef CONFIG_ZONE_DMA #define TEXT_FOR_DMA(xx) xx "_dma", #else @@ -788,7 +788,7 @@ const char * const vmstat_text[] = { #endif /* CONFIG_VM_EVENTS_COUNTERS */ }; -#endif /* CONFIG_PROC_FS || CONFIG_SYSFS */ +#endif /* CONFIG_PROC_FS || CONFIG_SYSFS || CONFIG_NUMA */ #ifdef CONFIG_PROC_FS -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>