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/*
* Copyright © 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Daniel Vetter <daniel.vetter@ffwll.ch>
*
*/
/*
* Testcase: Unreferencing of active buffers
*
* Execs buffers and immediately unreferences them, hence the kernel active list
* will be the last one to hold a reference on them.
*/
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <sys/ioctl.h>
#include <sys/signal.h>
#include <sys/time.h>
#include "igt.h"
#include "i915/gem.h"
#include "i915/gem_create.h"
IGT_TEST_DESCRIPTION("Test unreferencing of active buffers.");
static int __execbuf(int i915, struct drm_i915_gem_execbuffer2 *execbuf)
{
int err;
err = 0;
if (ioctl(i915, DRM_IOCTL_I915_GEM_EXECBUFFER2, execbuf)) {
err = -errno;
igt_assume(err);
}
errno = 0;
return err;
}
static void alarm_handler(int sig)
{
}
igt_simple_main
{
struct sigaction old_sa, sa = { .sa_handler = alarm_handler };
unsigned int last[2]= { -1, -1 }, count;
struct itimerval itv;
igt_spin_t *spin;
int i915;
uint64_t ahnd;
i915 = drm_open_driver(DRIVER_INTEL);
igt_require_gem(i915);
ahnd = get_reloc_ahnd(i915, 0);
spin = igt_spin_new(i915, .ahnd = ahnd);
fcntl(i915, F_SETFL, fcntl(i915, F_GETFL) | O_NONBLOCK);
sigaction(SIGALRM, &sa, &old_sa);
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 1000;
itv.it_value.tv_sec = 0;
itv.it_value.tv_usec = 10000;
setitimer(ITIMER_REAL, &itv, NULL);
count = 0;
do {
struct drm_i915_gem_exec_object2 obj[2] = {
{ .handle = gem_create(i915, 4096) },
spin->obj[IGT_SPIN_BATCH],
};
struct drm_i915_gem_execbuffer2 execbuf = {
.buffers_ptr = to_user_pointer(obj),
.buffer_count = ARRAY_SIZE(obj),
};
int err = __execbuf(i915, &execbuf);
gem_close(i915, obj[0].handle);
if (err == 0) {
count++;
continue;
}
if (err == -EWOULDBLOCK)
break;
if (last[1] == count)
break;
/* sleep until the next timer interrupt (woken on signal) */
pause();
last[1] = last[0];
last[0] = count;
} while (1);
memset(&itv, 0, sizeof(itv));
setitimer(ITIMER_REAL, &itv, NULL);
sigaction(SIGALRM, &old_sa, NULL);
igt_spin_free(i915, spin);
put_ahnd(ahnd);
}
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