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YuBiao Wang authored
[Why] GPU timing counters are read via KIQ under sriov, which will introduce a delay. [How] It could be directly read by MMIO. v2: Add additional check to prevent carryover issue. v3: Only check for carryover for once to prevent performance issue. v4: Add comments of the rough frequency where carryover happens. v5: Remove mutex and gfxoff ctrl unused with current timing registers. Signed-off-by: YuBiao Wang <YuBiao.Wang@amd.com> Acked-by: Horace Chen <horace.chen@amd.com> Reviewed-by: Christian König <christian.koenig@amd.co> Reviewed-by: Monk Liu <monk.liu@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Luben Tuikov <luben.tuikov@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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