static bool ignore_engine(int fd, unsigned engine)
{
if (engine == 0)
return true;
if (gem_has_bsd2(fd) && engine == I915_EXEC_BSD)
return true;
return false;
}
static void processes(void)
{
const struct intel_execution_engine *e;
unsigned engines[16];
int num_engines;
struct rlimit rlim;
unsigned num_ctx;
uint32_t name;
int fd, *fds;
fd = drm_open_driver(DRIVER_INTEL);
num_ctx = get_num_contexts(fd);
num_engines = 0;
for (e = intel_execution_engines; e->name; e++) {
if (e->exec_id == 0)
continue;
if (!has_engine(fd, e))
continue;
if (e->exec_id == I915_EXEC_BSD) {
int is_bsd2 = e->flags != 0;
if (gem_has_bsd2(fd) != is_bsd2)
continue;
}
engines[num_engines++] = e->exec_id | e->flags;
if (num_engines == ARRAY_SIZE(engines))
break;
}
/* tweak rlimits to allow us to create this many files */
igt_assert(getrlimit(RLIMIT_NOFILE, &rlim) == 0);
if (rlim.rlim_cur < ALIGN(num_ctx + 1024, 1024)) {
rlim.rlim_cur = ALIGN(num_ctx + 1024, 1024);
if (rlim.rlim_cur > rlim.rlim_max)
rlim.rlim_max = rlim.rlim_cur;
igt_assert(setrlimit(RLIMIT_NOFILE, &rlim) == 0);
}
fds = malloc(num_ctx * sizeof(int));
igt_assert(fds);
for (unsigned n = 0; n < num_ctx; n++) {
fds[n] = drm_open_driver(DRIVER_INTEL);
if (fds[n] == -1) {
int err = errno;
for (unsigned i = n; i--; )
close(fds[i]);
free(fds);
errno = err;
igt_assert_f(0, "failed to create context %lld/%lld\n", (long long)n, (long long)num_ctx);
}
}
if (1) {
uint32_t bbe = MI_BATCH_BUFFER_END;
name = gem_create(fd, 4096);
gem_write(fd, name, 0, &bbe, sizeof(bbe));
name = gem_flink(fd, name);
}
igt_fork(child, NUM_THREADS) {
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 obj;
memset(&obj, 0, sizeof(obj));
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = (uintptr_t)&obj;
execbuf.buffer_count = 1;
igt_permute_array(fds, num_ctx, xchg_int);
for (unsigned n = 0; n < num_ctx; n++) {
obj.handle = gem_open(fds[n], name);
execbuf.flags = engines[n % num_engines];
gem_execbuf(fds[n], &execbuf);
gem_close(fds[n], obj.handle);
}
}
igt_waitchildren();
for (unsigned n = 0; n < num_ctx; n++)
close(fds[n]);
free(fds);
close(fd);
}
