diff options
| author | Uladzislau Rezki (Sony) <urezki@gmail.com> | 2022-10-18 20:10:50 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-08 17:37:17 -0800 |
| commit | cf243da6ab3987b65b95357194926a31415095b8 (patch) | |
| tree | b2a507c87f6e3ad75acb23d0e551a7b082e5e7de /mm/vmalloc.c | |
| parent | fabc27f7649e070c4f6c742e436a51ff68c4a280 (diff) | |
| download | linux-cf243da6ab3987b65b95357194926a31415095b8.tar.gz | |
mm: vmalloc: use trace_alloc_vmap_area event
This is for debug purpose and is called when an allocation attempt occurs.
This event gives some information about:
- start address of allocated area;
- size that is requested;
- alignment that is required;
- vstart/vend restriction;
- if an allocation fails.
Link: https://lkml.kernel.org/r/20221018181053.434508-5-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sony.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index ccaa461998f3c..849563d334fba 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/vmalloc.h> + #include "internal.h" #include "pgalloc-track.h" @@ -1620,6 +1623,8 @@ retry: 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. |