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virtio: regression fixes

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Fixes two issues in the latest kernel.
 
 Signed-off-by: Michael S. Tsirkin <[email protected]>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio regression fixes from Michael Tsirkin:
 "Fixes two issues in the latest kernel"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio_mmio: fix devm cleanup
  ptr_ring: fix up after recent ptr_ring changes
This commit is contained in:
Linus Torvalds 2017-12-15 12:56:23 -08:00
commit d6e47eed05
2 changed files with 32 additions and 40 deletions
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29
tools/virtio/ringtest/ptr_ring.c
View file

@ -16,24 +16,41 @@
#define unlikely(x) (__builtin_expect(!!(x), 0))
#define likely(x) (__builtin_expect(!!(x), 1))
#define ALIGN(x, a) (((x) + (a) - 1) / (a) * (a))
#define SIZE_MAX (~(size_t)0)
typedef pthread_spinlock_t spinlock_t;
typedef int gfp_t;
static void *kmalloc(unsigned size, gfp_t gfp)
{
return memalign(64, size);
}
#define __GFP_ZERO 0x1
static void *kzalloc(unsigned size, gfp_t gfp)
static void *kmalloc(unsigned size, gfp_t gfp)
{
void *p = memalign(64, size);
if (!p)
return p;
memset(p, 0, size);
if (gfp & __GFP_ZERO)
memset(p, 0, size);
return p;
}
static inline void *kzalloc(unsigned size, gfp_t flags)
{
return kmalloc(size, flags | __GFP_ZERO);
}
static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags)
{
if (size != 0 && n > SIZE_MAX / size)
return NULL;
return kmalloc(n * size, flags);
}
static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
{
return kmalloc_array(n, size, flags | __GFP_ZERO);
}
static void kfree(void *p)
{
if (p)