diff options
| -rw-r--r-- | arch/arm/mm/init.c | 3 | ||||
| -rw-r--r-- | arch/ia64/mm/contig.c | 2 | ||||
| -rw-r--r-- | arch/ia64/mm/discontig.c | 2 | ||||
| -rw-r--r-- | arch/parisc/mm/init.c | 2 | ||||
| -rw-r--r-- | arch/unicore32/mm/init.c | 3 | ||||
| -rw-r--r-- | include/linux/mm.h | 3 | ||||
| -rw-r--r-- | lib/show_mem.c | 3 | ||||
| -rw-r--r-- | mm/page_alloc.c | 7 |
8 files changed, 24 insertions, 1 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index fbdd12e..cc3f35d 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -98,6 +98,9 @@ void show_mem(unsigned int filter) printk("Mem-info:\n"); show_free_areas(filter); + if (filter & SHOW_MEM_FILTER_PAGE_COUNT) + return; + for_each_bank (i, mi) { struct membank *bank = &mi->bank[i]; unsigned int pfn1, pfn2; diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c index f114a3b..ce6e7a8 100644 --- a/arch/ia64/mm/contig.c +++ b/arch/ia64/mm/contig.c @@ -46,6 +46,8 @@ void show_mem(unsigned int filter) printk(KERN_INFO "Mem-info:\n"); show_free_areas(filter); printk(KERN_INFO "Node memory in pages:\n"); + if (filter & SHOW_MEM_FILTER_PAGE_COUNT) + return; for_each_online_pgdat(pgdat) { unsigned long present; unsigned long flags; diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c index c641333..2230817 100644 --- a/arch/ia64/mm/discontig.c +++ b/arch/ia64/mm/discontig.c @@ -623,6 +623,8 @@ void show_mem(unsigned int filter) printk(KERN_INFO "Mem-info:\n"); show_free_areas(filter); + if (filter & SHOW_MEM_FILTER_PAGE_COUNT) + return; printk(KERN_INFO "Node memory in pages:\n"); for_each_online_pgdat(pgdat) { unsigned long present; diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index 82f364e..0b62162 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -685,6 +685,8 @@ void show_mem(unsigned int filter) printk(KERN_INFO "Mem-info:\n"); show_free_areas(filter); + if (filter & SHOW_MEM_FILTER_PAGE_COUNT) + return; #ifndef CONFIG_DISCONTIGMEM i = max_mapnr; while (i-- > 0) { diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c index 3b379cd..d1af4ed 100644 --- a/arch/unicore32/mm/init.c +++ b/arch/unicore32/mm/init.c @@ -65,6 +65,9 @@ void show_mem(unsigned int filter) printk(KERN_DEFAULT "Mem-info:\n"); show_free_areas(filter); + if (filter & SHOW_MEM_FILTER_PAGE_COUNT) + return; + for_each_bank(i, mi) { struct membank *bank = &mi->bank[i]; unsigned int pfn1, pfn2; diff --git a/include/linux/mm.h b/include/linux/mm.h index d0493f6..305fd75 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -865,7 +865,8 @@ extern void pagefault_out_of_memory(void); * Flags passed to show_mem() and show_free_areas() to suppress output in * various contexts. */ -#define SHOW_MEM_FILTER_NODES (0x0001u) /* filter disallowed nodes */ +#define SHOW_MEM_FILTER_NODES (0x0001u) /* disallowed nodes */ +#define SHOW_MEM_FILTER_PAGE_COUNT (0x0002u) /* page type count */ extern void show_free_areas(unsigned int flags); extern bool skip_free_areas_node(unsigned int flags, int nid); diff --git a/lib/show_mem.c b/lib/show_mem.c index 4407f8c..b7c7231 100644 --- a/lib/show_mem.c +++ b/lib/show_mem.c @@ -18,6 +18,9 @@ void show_mem(unsigned int filter) printk("Mem-Info:\n"); show_free_areas(filter); + if (filter & SHOW_MEM_FILTER_PAGE_COUNT) + return; + for_each_online_pgdat(pgdat) { unsigned long i, flags; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b5afea2..d8762b2 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1760,6 +1760,13 @@ void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...) return; /* + * Walking all memory to count page types is very expensive and should + * be inhibited in non-blockable contexts. + */ + if (!(gfp_mask & __GFP_WAIT)) + filter |= SHOW_MEM_FILTER_PAGE_COUNT; + + /* * This documents exceptions given to allocations in certain * contexts that are allowed to allocate outside current's set * of allowed nodes. |