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553021d974
v2: Also check whether a 2nd mmap on the same bo still works. Suggested by Chris Wilson. Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/*
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* Copyright © 2011 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include "drm.h"
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#include "i915_drm.h"
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#include "drmtest.h"
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#include "intel_bufmgr.h"
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#include "intel_batchbuffer.h"
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#include "intel_gpu_tools.h"
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static drm_intel_bufmgr *bufmgr;
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struct intel_batchbuffer *batch;
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/* Testcase: check whether the libdrm vma limiter works
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*
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* We've had reports of the X server exhausting the default rlimit of 64k vma's
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* in the kernel. libdrm has grown facilities to limit the vma caching since,
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* this checks whether they actually work.
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*/
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/* we do both cpu and gtt maps, so only need half of 64k to exhaust */
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#define BO_ARRAY_SIZE 35000
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drm_intel_bo *bos[BO_ARRAY_SIZE];
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int main(int argc, char **argv)
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{
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int fd;
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int i;
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char *ptr;
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fd = drm_open_any();
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bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
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drm_intel_bufmgr_gem_enable_reuse(bufmgr);
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batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd));
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drm_intel_bufmgr_gem_set_vma_cache_size(bufmgr, 500);
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for (i = 0; i < BO_ARRAY_SIZE; i++) {
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bos[i] = drm_intel_bo_alloc(bufmgr, "mmap bo", 4096, 4096);
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assert(bos[i]);
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drm_intel_bo_map(bos[i], 1);
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ptr = bos[i]->virtual;
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assert(ptr);
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*ptr = 'c';
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drm_intel_bo_unmap(bos[i]);
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drm_intel_gem_bo_map_gtt(bos[i]);
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ptr = bos[i]->virtual;
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assert(ptr);
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*ptr = 'c';
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drm_intel_gem_bo_unmap_gtt(bos[i]);
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}
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/* and recheck whether a second map of the same still works */
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for (i = 0; i < BO_ARRAY_SIZE; i++) {
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bos[i] = drm_intel_bo_alloc(bufmgr, "mmap bo", 4096, 4096);
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assert(bos[i]);
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drm_intel_bo_map(bos[i], 1);
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ptr = bos[i]->virtual;
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assert(*ptr = 'c');
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drm_intel_bo_unmap(bos[i]);
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drm_intel_gem_bo_map_gtt(bos[i]);
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ptr = bos[i]->virtual;
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assert(*ptr = 'c');
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drm_intel_gem_bo_unmap_gtt(bos[i]);
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}
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intel_batchbuffer_free(batch);
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drm_intel_bufmgr_destroy(bufmgr);
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close(fd);
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return 0;
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}
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