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minigbm: Use clflushopt if supported

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Use clflushopt if it is supported instead of clflush. clflushopt is more
optimized and suggested by the HW engineers. It has improved MTL unmap
operation times significantly.

BUG=b:274641129
TEST=camera preview should be minimum of 30fps

Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Signed-off-by: Sushma Venkatesh Reddy <sushma.venkatesh.reddy@intel.com>
Change-Id: I9bf7e355d5ebdfb1647c578173123bb73db5571d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/4382538
Reviewed-by: Dominik Behr <dbehr@chromium.org>
This commit is contained in:
Sushma Venkatesh Reddy 2023-04-14 09:04:37 -07:00 • committed by Chromeos LUCI
parent 84b3a09ef0
commit 5d2a76894d
1 changed files with 5 additions and 0 deletions
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i915.c
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@ -406,9 +406,14 @@ static void i915_clflush(void *start, size_t size)
__builtin_ia32_mfence();
while (p < end) {
#if defined(__CLFLUSHOPT__)
__builtin_ia32_clflushopt(p);
#else
__builtin_ia32_clflush(p);
#endif
p = (void *)((uintptr_t)p + I915_CACHELINE_SIZE);
}
__builtin_ia32_mfence();
}
static int i915_init(struct driver *drv)