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authorLinus Torvalds <torvalds@linux-foundation.org>2017-12-15 21:56:23 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2017-12-15 21:56:23 +0100
commitd6e47eed0501478d2b55f0f1375b3cd96d0f6535 (patch)
tree6342435a53c58470ecfa49f008c89afd1c7f2798 /tools
parentMerge tag 'for-4.15/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff)
parentvirtio_mmio: fix devm cleanup (diff)
downloadlinux-d6e47eed0501478d2b55f0f1375b3cd96d0f6535.tar.xz
linux-d6e47eed0501478d2b55f0f1375b3cd96d0f6535.zip
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
Diffstat (limited to 'tools')
-rw-r--r--tools/virtio/ringtest/ptr_ring.c29
1 files changed, 23 insertions, 6 deletions
diff --git a/tools/virtio/ringtest/ptr_ring.c b/tools/virtio/ringtest/ptr_ring.c
index 38bb171aceba..e6e81305ef46 100644
--- a/tools/virtio/ringtest/ptr_ring.c
+++ b/tools/virtio/ringtest/ptr_ring.c
@@ -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)