On Wed, Jun 5, 2024 at 9:56 PM cuitao <cuitao@xxxxxxxxxx> wrote: > > Use the __GFP_ZERO flag of kmalloc to initialize memory while allocating it, > without the need for an additional memset call. > > Signed-off-by: cuitao <cuitao@xxxxxxxxxx> > --- > tools/virtio/linux/kernel.h | 5 +---- > 1 file changed, 1 insertion(+), 4 deletions(-) > > diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h > index 6702008f7f5c..9e401fb7c215 100644 > --- a/tools/virtio/linux/kernel.h > +++ b/tools/virtio/linux/kernel.h > @@ -66,10 +66,7 @@ static inline void *kmalloc_array(unsigned n, size_t s, gfp_t gfp) > > static inline void *kzalloc(size_t s, gfp_t gfp) > { > - void *p = kmalloc(s, gfp); > - > - memset(p, 0, s); > - return p; > + return kmalloc(s, gfp | __GFP_ZERO); > } > > static inline void *alloc_pages_exact(size_t s, gfp_t gfp) > -- > 2.25.1 > Does this really work? extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end; static inline void *kmalloc(size_t s, gfp_t gfp) { if (__kmalloc_fake) return __kmalloc_fake; return malloc(s); } Thanks