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drm/i915/selftests: Select a random engine for testing memory regions 

Use any blitter engine at random for prefilling the memory region.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191027225808.19437-5-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-10-27 22:58:08 +00:00
parent 5a3e2b82af
commit 6804da20bb
1 changed files with 26 additions and 3 deletions
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29
drivers/gpu/drm/i915/selftests/intel_memory_region.c
View File

@ -17,6 +17,7 @@
#include "gem/i915_gem_object_blt.h"
#include "gem/selftests/igt_gem_utils.h"
#include "gem/selftests/mock_context.h"
#include "gt/intel_engine_user.h"
#include "gt/intel_gt.h"
#include "selftests/igt_flush_test.h"
#include "selftests/i915_random.h"
@ -442,6 +443,25 @@ out_file:
return err;
}
static struct intel_engine_cs *
random_engine_class(struct drm_i915_private *i915,
unsigned int class,
struct rnd_state *prng)
{
struct intel_engine_cs *engine;
unsigned int count;
count = 0;
for (engine = intel_engine_lookup_user(i915, class, 0);
engine && engine->uabi_class == class;
engine = rb_entry_safe(rb_next(&engine->uabi_node),
typeof(*engine), uabi_node))
count++;
count = i915_prandom_u32_max_state(count, prng);
return intel_engine_lookup_user(i915, class, count);
}
static int igt_lmem_write_cpu(void *arg)
{
struct drm_i915_private *i915 = arg;
@ -458,6 +478,7 @@ static int igt_lmem_write_cpu(void *arg)
PAGE_SIZE - sizeof(u64),
PAGE_SIZE - 64,
};
struct intel_engine_cs *engine;
u32 *vaddr;
u32 sz;
u32 i;
@ -465,9 +486,12 @@ static int igt_lmem_write_cpu(void *arg)
int count;
int err;
if (!HAS_ENGINE(i915, BCS0))
engine = random_engine_class(i915, I915_ENGINE_CLASS_COPY, &prng);
if (!engine)
return 0;
pr_info("%s: using %s\n", __func__, engine->name);
sz = round_up(prandom_u32_state(&prng) % SZ_32M, PAGE_SIZE);
sz = max_t(u32, 2 * PAGE_SIZE, sz);
@ -482,8 +506,7 @@ static int igt_lmem_write_cpu(void *arg)
}
/* Put the pages into a known state -- from the gpu for added fun */
err = i915_gem_object_fill_blt(obj, i915->engine[BCS0]->kernel_context,
0xdeadbeaf);
err = i915_gem_object_fill_blt(obj, engine->kernel_context, 0xdeadbeaf);
if (err)
goto out_unpin;