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5fa15f79d0
Let's start by a small set of tests, to eventually consider running more. The current list should then be: gem_mmap gem_pread_after_blit gem_ring_sync_loop gem_ctx_basic gem_pipe_control_store_loop gem_storedw_loop_render gem_storedw_loop_blt gem_storedw_loop_bsd gem_render_linear_blits gem_tiled_blits gem_cpu_reloc gem_exec_nop gem_mmap_gtt v2 add (Daniel Vetter) gem_exec_bad_domains gem_exec_faulting_reloc gem_flink gem_reg_read gem_reloc_overflow gem_tiling_max_stride prime_* Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/*
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* Copyright © 2012 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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*/
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#include <unistd.h>
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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/ioctl.h>
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#include <sys/mman.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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#define OBJECT_SIZE (1024*1024)
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/* Testcase: checks whether the kernel handles mmap offset exhaustion correctly
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*
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* Currently the kernel doesn't reap the mmap offset of purged objects, albeit
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* there's nothing that prevents it ABI-wise and it helps to get out of corners
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* (because drm_mm is only 32bit on 32bit archs unfortunately.
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*
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* Note that on 64bit machines we have plenty of address space (because drm_mm
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* uses unsigned long).
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*/
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static void
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create_and_map_bo(int fd)
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{
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uint32_t handle;
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char *ptr;
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handle = gem_create(fd, OBJECT_SIZE);
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ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE);
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if (!ptr) {
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fprintf(stderr, "mmap failed\n");
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assert(ptr);
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}
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/* touch it to force it into the gtt */
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*ptr = 0;
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/* but then unmap it again because we only have limited address space on
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* 32 bit */
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munmap(ptr, OBJECT_SIZE);
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/* we happily leak objects to exhaust mmap offset space, the kernel will
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* reap backing storage. */
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gem_madvise(fd, handle, I915_MADV_DONTNEED);
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}
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int main(int argc, char **argv)
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{
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int fd, i;
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drmtest_skip_on_simulation();
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fd = drm_open_any();
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/* we have 32bit of address space, so try to fit one MB more
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* than that. */
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for (i = 0; i < 4096 + 1; i++)
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create_and_map_bo(fd);
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close(fd);
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return 0;
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}
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