This is for debug purpose and is called when an allocation attempt occurs. This event gives some information about: - a start address of allocated area; - a size that is requested; - an align that is required; - vstart/vend restriction; - if an allocation fails. Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx> --- mm/vmalloc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 83b54beb12fa..f4397817ccd7 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -43,6 +43,9 @@ #include <asm/tlbflush.h> #include <asm/shmparam.h> +#define CREATE_TRACE_POINTS +#include <trace/events/vmap.h> + #include "internal.h" #include "pgalloc-track.h" @@ -1621,6 +1624,8 @@ static struct vmap_area *alloc_vmap_area(unsigned long size, size, align, vstart, vend); spin_unlock(&free_vmap_area_lock); + trace_alloc_vmap_area(addr, size, align, vstart, vend, addr == vend); + /* * If an allocation fails, the "vend" address is * returned. Therefore trigger the overflow path. -- 2.30.2
