[igt-dev] [PATCH] [PATCH i-g-t]tests/i915/gem_ctx_create: Reverted device reopen logic
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Mon Mar 23 08:19:28 UTC 2020
On 23/03/2020 06:46, Arjun Melkaveri wrote:
> Removed gem_reopen_driver and gem_context_copy_engines
> logic from code as it is not recommended.
> No reopen after fork is needed .
>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Ursulin Tvrtko <tvrtko.ursulin at intel.com>
> Signed-off-by: Arjun Melkaveri <arjun.melkaveri at intel.com>
> ---
> tests/i915/gem_ctx_create.c | 45 +++++--------------------------------
> 1 file changed, 6 insertions(+), 39 deletions(-)
>
> diff --git a/tests/i915/gem_ctx_create.c b/tests/i915/gem_ctx_create.c
> index 2d477226..4f160ea9 100644
> --- a/tests/i915/gem_ctx_create.c
> +++ b/tests/i915/gem_ctx_create.c
> @@ -100,12 +100,10 @@ static void files(int core, int timeout, const int ncpus)
> igt_fork(child, ncpus) {
> struct timespec start, end;
> unsigned count = 0;
> - int fd;
>
> clock_gettime(CLOCK_MONOTONIC, &start);
> do {
> - fd = gem_reopen_driver(core);
> - gem_context_copy_engines(core, 0, fd, 0);
> + int fd = drm_open_driver(DRIVER_INTEL);
Here it looks like you need to copy engines over, since drm_open_driver
means a new default context.
Regards,
Tvrtko
>
> obj.handle = gem_open(fd, name);
> execbuf.flags &= ~ENGINE_FLAGS;
> @@ -160,15 +158,6 @@ static void active(int fd, const struct intel_execution_engine2 *e,
> if (ncpus < 0) {
> igt_fork(child, ppgtt_nengine) {
> unsigned long count = 0;
> - int i915;
> -
> - i915 = gem_reopen_driver(fd);
> - /*
> - * Ensure the gpu is idle by launching
> - * a nop execbuf and stalling for it
> - */
> - gem_quiescent_gpu(i915);
> - gem_context_copy_engines(fd, 0, i915, 0);
>
> if (ppgtt_engines[child] == e->flags)
> continue;
> @@ -192,21 +181,10 @@ static void active(int fd, const struct intel_execution_engine2 *e,
> igt_fork(child, ncpus) {
> struct timespec start, end;
> unsigned count = 0;
> - int i915;
> - uint32_t ctx;
> -
> - i915 = gem_reopen_driver(fd);
> - /*
> - * Ensure the gpu is idle by launching
> - * a nop execbuf and stalling for it.
> - */
> - gem_quiescent_gpu(i915);
> - ctx = gem_context_create(i915);
> - gem_context_copy_engines(fd, 0, i915, ctx);
>
> clock_gettime(CLOCK_MONOTONIC, &start);
> do {
> - execbuf.rsvd1 = gem_context_clone_with_engines(fd, ctx);
> + execbuf.rsvd1 = gem_context_clone_with_engines(fd, 0);
> for (unsigned n = 0; n < nengine; n++) {
> execbuf.flags = engines[n];
> gem_execbuf(fd, &execbuf);
> @@ -217,8 +195,6 @@ static void active(int fd, const struct intel_execution_engine2 *e,
> clock_gettime(CLOCK_MONOTONIC, &end);
> } while (elapsed(&start, &end) < timeout);
>
> - gem_context_destroy(fd, ctx);
> -
> gem_sync(fd, obj.handle);
> clock_gettime(CLOCK_MONOTONIC, &end);
> igt_info("[%d] Context creation + execution: %.3f us\n",
> @@ -325,18 +301,9 @@ static void maximum(int fd, int ncpus, unsigned mode)
>
> igt_fork(child, ncpus) {
> struct timespec start, end;
> - int i915;
> -
> - i915 = gem_reopen_driver(fd);
> - /*
> - * Ensure the gpu is idle by launching
> - * a nop execbuf and stalling for it.
> - */
> - gem_quiescent_gpu(i915);
> - gem_context_copy_engines(fd, 0, i915, 0);
>
> hars_petruska_f54_1_random_perturb(child);
> - obj[0].handle = gem_create(i915, 4096);
> + obj[0].handle = gem_create(fd, 4096);
>
> clock_gettime(CLOCK_MONOTONIC, &start);
> for (int repeat = 0; repeat < 3; repeat++) {
> @@ -347,13 +314,13 @@ static void maximum(int fd, int ncpus, unsigned mode)
> execbuf.rsvd1 = contexts[i];
> for (unsigned long j = 0; j < all_nengine; j++) {
> execbuf.flags = all_engines[j];
> - gem_execbuf(i915, &execbuf);
> + gem_execbuf(fd, &execbuf);
> }
> }
> }
> - gem_sync(i915, obj[0].handle);
> + gem_sync(fd, obj[0].handle);
> clock_gettime(CLOCK_MONOTONIC, &end);
> - gem_close(i915, obj[0].handle);
> + gem_close(fd, obj[0].handle);
>
> igt_info("[%d] Context execution: %.3f us\n", child,
> elapsed(&start, &end) / (3 * count * all_nengine) * 1e6);
>
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