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igt/gem_ctx_thrash: Double number of threads/proceesses

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Slightly increase the stress by doubling the number of contending
threads and the number of times we try and use each ctx/fd.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-02-05 11:46:41 +00:00
parent ef724ab2bb
commit 3b12d9e6dc
1 changed files with 6 additions and 5 deletions
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11
tests/gem_ctx_thrash.c
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@ -33,7 +33,7 @@
IGT_TEST_DESCRIPTION("Fill the Gobal GTT with context objects and VMs\n"); IGT_TEST_DESCRIPTION("Fill the Gobal GTT with context objects and VMs\n");
#define NUM_THREADS sysconf(_SC_NPROCESSORS_ONLN) #define NUM_THREADS (2*sysconf(_SC_NPROCESSORS_ONLN))
static void xchg_int(void *array, unsigned i, unsigned j) static void xchg_int(void *array, unsigned i, unsigned j)
{ {
@ -175,19 +175,18 @@ struct thread {
int fd; int fd;
uint32_t *all_ctx; uint32_t *all_ctx;
unsigned num_ctx; unsigned num_ctx;
uint32_t batch;
}; };
static void *thread(void *data) static void *thread(void *data)
{ {
struct thread *t = data; struct thread *t = data;
uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf; struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 obj; struct drm_i915_gem_exec_object2 obj;
uint32_t *ctx; uint32_t *ctx;
memset(&obj, 0, sizeof(obj)); memset(&obj, 0, sizeof(obj));
obj.handle = gem_create(t->fd, 4096); obj.handle = t->batch;
gem_write(t->fd, obj.handle, 0, &bbe, sizeof(bbe));
memset(&execbuf, 0, sizeof(execbuf)); memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = (uintptr_t)&obj; execbuf.buffers_ptr = (uintptr_t)&obj;
@ -204,13 +203,13 @@ static void *thread(void *data)
} }
free(ctx); free(ctx);
gem_close(t->fd, obj.handle);
return NULL; return NULL;
} }
static void threads(void) static void threads(void)
{ {
uint32_t bbe = MI_BATCH_BUFFER_END;
pthread_t threads[NUM_THREADS]; pthread_t threads[NUM_THREADS];
struct thread data; struct thread data;
@ -220,6 +219,8 @@ static void threads(void)
igt_assert(data.all_ctx); igt_assert(data.all_ctx);
for (unsigned n = 0; n < data.num_ctx; n++) for (unsigned n = 0; n < data.num_ctx; n++)
data.all_ctx[n] = gem_context_create(data.fd); data.all_ctx[n] = gem_context_create(data.fd);
data.batch = gem_create(data.fd, 4096);
gem_write(data.fd, data.batch, 0, &bbe, sizeof(bbe));
for (int n = 0; n < NUM_THREADS; n++) for (int n = 0; n < NUM_THREADS; n++)
pthread_create(&threads[n], NULL, thread, &data); pthread_create(&threads[n], NULL, thread, &data);