diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/gfp.h | 14 | ||||
| -rw-r--r-- | include/trace/events/mmflags.h | 1 |
2 files changed, 9 insertions, 6 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h index c29e9d3..f8041f9de 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -237,9 +237,11 @@ struct vm_area_struct; * are expected to be movable via page reclaim or page migration. Typically, * pages on the LRU would also be allocated with GFP_HIGHUSER_MOVABLE. * - * GFP_TRANSHUGE is used for THP allocations. They are compound allocations - * that will fail quickly if memory is not available and will not wake - * kswapd on failure. + * GFP_TRANSHUGE and GFP_TRANSHUGE_LIGHT are used for THP allocations. They are + * compound allocations that will generally fail quickly if memory is not + * available and will not wake kswapd/kcompactd on failure. The _LIGHT + * version does not attempt reclaim/compaction at all and is by default used + * in page fault path, while the non-light is used by khugepaged. */ #define GFP_ATOMIC (__GFP_HIGH|__GFP_ATOMIC|__GFP_KSWAPD_RECLAIM) #define GFP_KERNEL (__GFP_RECLAIM | __GFP_IO | __GFP_FS) @@ -254,9 +256,9 @@ struct vm_area_struct; #define GFP_DMA32 __GFP_DMA32 #define GFP_HIGHUSER (GFP_USER | __GFP_HIGHMEM) #define GFP_HIGHUSER_MOVABLE (GFP_HIGHUSER | __GFP_MOVABLE) -#define GFP_TRANSHUGE ((GFP_HIGHUSER_MOVABLE | __GFP_COMP | \ - __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN) & \ - ~__GFP_RECLAIM) +#define GFP_TRANSHUGE_LIGHT ((GFP_HIGHUSER_MOVABLE | __GFP_COMP | \ + __GFP_NOMEMALLOC | __GFP_NOWARN) & ~__GFP_RECLAIM) +#define GFP_TRANSHUGE (GFP_TRANSHUGE_LIGHT | __GFP_DIRECT_RECLAIM) /* Convert GFP flags to their corresponding migrate type */ #define GFP_MOVABLE_MASK (__GFP_RECLAIMABLE|__GFP_MOVABLE) diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h index 43cedbf0c..5a81ab4 100644 --- a/include/trace/events/mmflags.h +++ b/include/trace/events/mmflags.h @@ -11,6 +11,7 @@ #define __def_gfpflag_names \ {(unsigned long)GFP_TRANSHUGE, "GFP_TRANSHUGE"}, \ + {(unsigned long)GFP_TRANSHUGE_LIGHT, "GFP_TRANSHUGE_LIGHT"}, \ {(unsigned long)GFP_HIGHUSER_MOVABLE, "GFP_HIGHUSER_MOVABLE"},\ {(unsigned long)GFP_HIGHUSER, "GFP_HIGHUSER"}, \ {(unsigned long)GFP_USER, "GFP_USER"}, \ |