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igt/gem_shrink: Exercise with userptr stress

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Add additional mempressure in the form of userptr.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-04-02 17:22:46 +01:00
parent 88bfe6ac41
commit 8833648b5c
1 changed files with 68 additions and 11 deletions
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79
tests/gem_shrink.c
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@ -102,7 +102,7 @@ static void execbufN(int fd, uint64_t alloc)
struct drm_i915_gem_execbuffer2 execbuf;
int count = alloc >> 20;
obj = calloc(alloc + 1, sizeof(&obj));
obj = calloc(alloc + 1, sizeof(*obj));
memset(&execbuf, 0, sizeof(execbuf));
obj[count].handle = gem_create(fd, 4096);
@ -119,6 +119,7 @@ static void execbufN(int fd, uint64_t alloc)
for (int i = 0; i <= count; i++)
gem_madvise(fd, obj[i].handle, I915_MADV_DONTNEED);
free(obj);
}
static void hang(int fd, uint64_t alloc)
@ -128,7 +129,7 @@ static void hang(int fd, uint64_t alloc)
struct drm_i915_gem_execbuffer2 execbuf;
int count = alloc >> 20;
obj = calloc(alloc + 1, sizeof(&obj));
obj = calloc(alloc + 1, sizeof(*obj));
memset(&execbuf, 0, sizeof(execbuf));
obj[count].handle = gem_create(fd, 4096);
@ -146,30 +147,85 @@ static void hang(int fd, uint64_t alloc)
gem_close(fd, igt_hang_ring(fd, 0).handle);
for (int i = 0; i <= count; i++)
gem_madvise(fd, obj[i].handle, I915_MADV_DONTNEED);
free(obj);
}
static void userptr(int fd, uint64_t alloc)
{
struct local_i915_gem_userptr userptr;
void *ptr;
igt_assert((alloc & 4095) == 0);
ptr = mmap(NULL, alloc,
PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
-1, 0);
igt_assert(ptr != (void *)-1);
memset(&userptr, 0, sizeof(userptr));
userptr.user_size = alloc;
userptr.user_ptr = (uintptr_t)ptr;
do_ioctl(fd, LOCAL_IOCTL_I915_GEM_USERPTR, &userptr);
gem_set_domain(fd, userptr.handle, I915_GEM_DOMAIN_GTT, 0);
}
static bool has_userptr(void)
{
struct local_i915_gem_userptr userptr;
int fd = drm_open_driver(DRIVER_INTEL);
int err;
memset(&userptr, 0, sizeof(userptr));
userptr.user_size = 8192;
userptr.user_ptr = -4096;
err = 0;
if (drmIoctl(fd, LOCAL_IOCTL_I915_GEM_USERPTR, &userptr))
err = errno;
close(fd);
return err == EFAULT;
}
#define SOLO 1
#define USERPTR 2
static void run_test(int nchildren, uint64_t alloc,
void (*func)(int, uint64_t), unsigned flags)
{
/* Each pass consumes alloc bytes and doesn't drop
* its reference to object (i.e. calls
* gem_madvise(DONTNEED) instead of gem_close()).
* After nchildren passes we expect each process
* to have enough objects to consume all of memory
* if left unchecked.
*/
if (flags & SOLO)
nchildren = 1;
/* Background load */
if (flags & USERPTR) {
igt_require(has_userptr());
igt_fork(child, (nchildren + 1)/2) {
igt_timeout(flags & SOLO ? 1 : 20) {
int fd = drm_open_driver(DRIVER_INTEL);
for (int pass = 0; pass < nchildren; pass++)
userptr(fd, alloc);
close(fd);
}
}
nchildren = (nchildren + 1)/2;
}
/* Exercise major ioctls */
igt_fork(child, nchildren) {
igt_timeout(flags & SOLO ? 1 : 20) {
int fd = drm_open_driver(DRIVER_INTEL);
/* Each pass consumes alloc bytes and doesn't drop
* its reference to object (i.e. calls
* gem_madvise(DONTNEED) instead of gem_close()).
* After nchildren passes we expect each process
* to have enough objects to consume all of memory
* if left unchecked.
*/
for (int pass = 0; pass < nchildren; pass++)
func(fd, alloc);
close(fd);
}
}
@ -198,6 +254,7 @@ igt_main
} modes[] = {
{ "-sanitycheck", SOLO },
{ "", 0 },
{ "-userptr", USERPTR },
{ NULL },
};
uint64_t alloc_size = 0;