Release 4.11 tools/virtio/ringtest/ptr_ring.c
#define _GNU_SOURCE
#include "main.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <pthread.h>
#include <malloc.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#define SMP_CACHE_BYTES 64
#define cache_line_size() SMP_CACHE_BYTES
#define ____cacheline_aligned_in_smp __attribute__ ((aligned (SMP_CACHE_BYTES)))
#define unlikely(x) (__builtin_expect(!!(x), 0))
#define likely(x) (__builtin_expect(!!(x), 1))
#define ALIGN(x, a) (((x) + (a) - 1) / (a) * (a))
typedef pthread_spinlock_t spinlock_t;
typedef int gfp_t;
static void *kmalloc(unsigned size, gfp_t gfp)
{
return memalign(64, size);
}
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| Total | 21 | 100.00% | 1 | 100.00% |
static void *kzalloc(unsigned size, gfp_t gfp)
{
void *p = memalign(64, size);
if (!p)
return p;
memset(p, 0, size);
return p;
}
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static void kfree(void *p)
{
if (p)
free(p);
}
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static void spin_lock_init(spinlock_t *lock)
{
int r = pthread_spin_init(lock, 0);
assert(!r);
}
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static void spin_lock(spinlock_t *lock)
{
int ret = pthread_spin_lock(lock);
assert(!ret);
}
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static void spin_unlock(spinlock_t *lock)
{
int ret = pthread_spin_unlock(lock);
assert(!ret);
}
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static void spin_lock_bh(spinlock_t *lock)
{
spin_lock(lock);
}
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static void spin_unlock_bh(spinlock_t *lock)
{
spin_unlock(lock);
}
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static void spin_lock_irq(spinlock_t *lock)
{
spin_lock(lock);
}
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| Total | 15 | 100.00% | 1 | 100.00% |
static void spin_unlock_irq(spinlock_t *lock)
{
spin_unlock(lock);
}
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static void spin_lock_irqsave(spinlock_t *lock, unsigned long f)
{
spin_lock(lock);
}
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static void spin_unlock_irqrestore(spinlock_t *lock, unsigned long f)
{
spin_unlock(lock);
}
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| Total | 19 | 100.00% | 1 | 100.00% |
#include "../../../include/linux/ptr_ring.h"
static unsigned long long headcnt, tailcnt;
static struct ptr_ring array ____cacheline_aligned_in_smp;
/* implemented by ring */
void alloc_ring(void)
{
int ret = ptr_ring_init(&array, ring_size, 0);
assert(!ret);
}
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/* guest side */
int add_inbuf(unsigned len, void *buf, void *datap)
{
int ret;
ret = __ptr_ring_produce(&array, buf);
if (ret >= 0) {
ret = 0;
headcnt++;
}
return ret;
}
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| Michael S. Tsirkin | 47 | 100.00% | 1 | 100.00% |
| Total | 47 | 100.00% | 1 | 100.00% |
/*
* ptr_ring API provides no way for producer to find out whether a given
* buffer was consumed. Our tests merely require that a successful get_buf
* implies that add_inbuf succeed in the past, and that add_inbuf will succeed,
* fake it accordingly.
*/
void *get_buf(unsigned *lenp, void **bufp)
{
void *datap;
if (tailcnt == headcnt || __ptr_ring_full(&array))
datap = NULL;
else {
datap = "Buffer\n";
++tailcnt;
}
return datap;
}
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bool used_empty()
{
return (tailcnt == headcnt || __ptr_ring_full(&array));
}
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| Michael S. Tsirkin | 11 | 61.11% | 1 | 50.00% |
| Paolo Bonzini | 7 | 38.89% | 1 | 50.00% |
| Total | 18 | 100.00% | 2 | 100.00% |
void disable_call()
{
assert(0);
}
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bool enable_call()
{
assert(0);
}
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| Total | 10 | 100.00% | 1 | 100.00% |
void kick_available(void)
{
assert(0);
}
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/* host side */
void disable_kick()
{
assert(0);
}
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bool enable_kick()
{
assert(0);
}
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| Michael S. Tsirkin | 10 | 100.00% | 1 | 100.00% |
| Total | 10 | 100.00% | 1 | 100.00% |
bool avail_empty()
{
return !__ptr_ring_peek(&array);
}
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| Michael S. Tsirkin | 7 | 53.85% | 1 | 50.00% |
| Paolo Bonzini | 6 | 46.15% | 1 | 50.00% |
| Total | 13 | 100.00% | 2 | 100.00% |
bool use_buf(unsigned *lenp, void **bufp)
{
void *ptr;
ptr = __ptr_ring_consume(&array);
return ptr;
}
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| Michael S. Tsirkin | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
void call_used(void)
{
assert(0);
}
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| Michael S. Tsirkin | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Michael S. Tsirkin | 583 | 97.82% | 3 | 75.00% |
| Paolo Bonzini | 13 | 2.18% | 1 | 25.00% |
| Total | 596 | 100.00% | 4 | 100.00% |
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