drm/i915: Nuke pointless div by 64bit (2e270158) · Commits · 戴 / test

Bunch of places use a 64bit divisor needlessly. Switch to 32bit divisor. Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Signed-off-by:

drivers/gpu/drm/i915/i915_perf.c

+5 −6

Original line number	Diff line number	Diff line
		@@ -1612,10 +1612,9 @@ static int alloc_noa_wait(struct i915_perf_stream *stream)
		struct drm_i915_gem_object *bo;
		struct i915_vma *vma;
		const u64 delay_ticks = 0xffffffffffffffff -
		DIV64_U64_ROUND_UP(
		atomic64_read(&stream->perf->noa_programming_delay) *
		DIV_ROUND_UP_ULL(atomic64_read(&stream->perf->noa_programming_delay) *
		RUNTIME_INFO(i915)->cs_timestamp_frequency_khz,
		1000000ull);
		1000000);
		const u32 base = stream->engine->mmio_base;
		#define CS_GPR(x) GEN8_RING_CS_GPR(base, x)
		u32 batch, ts0, cs, jump;
		@@ -3485,8 +3484,8 @@ err:

		static u64 oa_exponent_to_ns(struct i915_perf *perf, int exponent)
		{
		return div64_u64(1000000000ULL * (2ULL << exponent),
		1000ULL * RUNTIME_INFO(perf->i915)->cs_timestamp_frequency_khz);
		return div_u64(1000000 * (2ULL << exponent),
		RUNTIME_INFO(perf->i915)->cs_timestamp_frequency_khz);
		}

		/**