diff options
| author | Michal Hocko <[email protected]> | 2016-07-26 15:22:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-07-26 16:19:19 -0700 |
| commit | bacdcb346093794f292c2c9c67ae350895e8b7ef (patch) | |
| tree | 2b2e6b55fac0674802f85156453525716e16f176 | |
| parent | 210e7a43fa905bccafa9bb5966fba1d71f33eb8b (diff) | |
slab: make GFP_SLAB_BUG_MASK information more human readable
printk offers %pGg for quite some time so let's use it to get a human
readable list of invalid flags.
The original output would be
[ 429.191962] gfp: 2
after the change
[ 429.191962] Unexpected gfp: 0x2 (__GFP_HIGHMEM)
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Michal Hocko <[email protected]>
Cc: Sergey Senozhatsky <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/slab.c | 3 | ||||
| -rw-r--r-- | mm/slub.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/mm/slab.c b/mm/slab.c index 763096a247f6..03fb724d6e48 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2686,7 +2686,8 @@ static struct page *cache_grow_begin(struct kmem_cache *cachep, * critical path in kmem_cache_alloc(). */ if (unlikely(flags & GFP_SLAB_BUG_MASK)) { - pr_emerg("gfp: %u\n", flags & GFP_SLAB_BUG_MASK); + gfp_t invalid_mask = flags & GFP_SLAB_BUG_MASK; + pr_emerg("Unexpected gfp: %#x (%pGg)\n", invalid_mask, &invalid_mask); BUG(); } local_flags = flags & (GFP_CONSTRAINT_MASK|GFP_RECLAIM_MASK); diff --git a/mm/slub.c b/mm/slub.c index f5b3114b6a97..a2fe4edc3599 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1612,7 +1612,8 @@ out: static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node) { if (unlikely(flags & GFP_SLAB_BUG_MASK)) { - pr_emerg("gfp: %u\n", flags & GFP_SLAB_BUG_MASK); + gfp_t invalid_mask = flags & GFP_SLAB_BUG_MASK; + pr_emerg("Unexpected gfp: %#x (%pGg)\n", invalid_mask, &invalid_mask); BUG(); } |