78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
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/*
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* Copyright © 2011 Red Hat
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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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* Jerome Glisse <j.glisse@gmail.com>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "rbo.h"
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#include "xf86drm.h"
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/* allocate as many single page bo to try to starve the kernel
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* memory zone (below highmem)
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*/
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static void ttm_starve_kernel_private_memory(int fd)
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{
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struct list_head list;
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struct rbo *bo, *tmp;
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unsigned nbo = 0;
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printf("\n[%s]\n", __func__);
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list_inithead(&list);
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while (1) {
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bo = rbo(fd, 0, 4096, 0, NULL);
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if (bo == NULL) {
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printf("failing after %d bo\n", nbo);
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break;
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}
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nbo++;
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list_add(&bo->list, &list);
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}
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LIST_FOR_EACH_ENTRY_SAFE(bo, tmp, &list, list) {
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list_del(&bo->list);
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rbo_decref(bo);
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}
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}
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static int radeon_open_fd(void)
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{
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return drmOpen("radeon", NULL);
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}
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int main(void)
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{
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int radeonfd;
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radeonfd = radeon_open_fd();
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if (radeonfd < 0) {
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fprintf(stderr, "failed to open radeon fd\n");
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return -1;
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}
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ttm_starve_kernel_private_memory(radeonfd);
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close(radeonfd);
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return 0;
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}
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