From: Mika Kuoppala <[email protected]> This catches parallel access to bo->virtual causing sigbus
Signed-off-by: Mika Kuoppala <[email protected]> --- tests/Makefile.am | 1 + tests/drm_threaded_access_tiled.c | 123 +++++++++++++++++++++++++++++++++++++ 2 files changed, 124 insertions(+) create mode 100644 tests/drm_threaded_access_tiled.c diff --git a/tests/Makefile.am b/tests/Makefile.am index 956a724..6811290 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -71,6 +71,7 @@ TESTS_progs = \ drm_vma_limiter_cpu \ drm_vma_limiter_gtt \ drm_vma_limiter_cached \ + drm_threaded_access_tiled \ sysfs_rc6_residency \ sysfs_rps \ flip_test \ diff --git a/tests/drm_threaded_access_tiled.c b/tests/drm_threaded_access_tiled.c new file mode 100644 index 0000000..362cf3a --- /dev/null +++ b/tests/drm_threaded_access_tiled.c @@ -0,0 +1,123 @@ +/* + * Copyright (c) 2012 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: + * Mika Kuoppala <[email protected]> + */ + +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <fcntl.h> +#include <unistd.h> +#include <pthread.h> + +#include "drmtest.h" +#include "i915_drm.h" +#include "intel_bufmgr.h" + +/* Testcase: check parallel access to tiled memory + * + * Parallel access to tiled memory caused sigbus + */ + +#define NUM_THREADS 2 +#define WIDTH 4096 +#define HEIGHT 4096 + +struct thread_ctx { + drm_intel_bo *bo; +}; + +static drm_intel_bufmgr *bufmgr; +static struct thread_ctx tctx[NUM_THREADS]; + +static void *copy_fn(void *p) +{ + unsigned char *buf; + struct thread_ctx *c = p; + + buf = malloc(WIDTH * HEIGHT); + if (buf == NULL) + return (void *)1; + + memcpy(buf, c->bo->virtual, WIDTH * HEIGHT); + + free(buf); + return (void *)0; +} + +static int copy_tile_threaded(drm_intel_bo *bo) +{ + int i; + int r; + pthread_t thr[NUM_THREADS]; + void *status; + + for (i = 0; i < NUM_THREADS; i++) { + tctx[i].bo = bo; + r = pthread_create(&thr[i], NULL, copy_fn, (void *)&tctx[i]); + assert(r == 0); + } + + for (i = 0; i < NUM_THREADS; i++) { + pthread_join(thr[i], &status); + assert(status == 0); + } + + return 0; +} + +int main(int argc, char **argv) +{ + int fd; + drm_intel_bo *bo; + uint32_t tiling_mode = I915_TILING_Y; + unsigned long pitch = 0; + int r; + + fd = drm_open_any(); + assert(fd >= 0); + + bufmgr = drm_intel_bufmgr_gem_init(fd, 4096); + assert(bufmgr); + + bo = drm_intel_bo_alloc_tiled(bufmgr, "mmap bo", WIDTH, HEIGHT, 1, + &tiling_mode, &pitch, 0); + assert(bo); + + r = drm_intel_gem_bo_map_gtt(bo); + assert(!r); + + r = copy_tile_threaded(bo); + assert(!r); + + r = drm_intel_gem_bo_unmap_gtt(bo); + assert(!r); + + drm_intel_bo_unreference(bo); + drm_intel_bufmgr_destroy(bufmgr); + + close(fd); + + return 0; +} -- 1.7.9.5 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
