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i915/perf: Do not add ggtt offset to hw_tail

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ggtt offset for hw_tail is not required for the calculations, so drop
it.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230605193923.1836048-3-umesh.nerlige.ramappa@intel.com
This commit is contained in:
Umesh Nerlige Ramappa 2023-06-05 12:39:23 -07:00
parent 9cc31938d4
commit 589f4924e8
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/i915/i915_perf.c
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@ -565,7 +565,7 @@ static bool oa_buffer_check_unlocked(struct i915_perf_stream *stream)
partial_report_size %= report_size;
/* Subtract partial amount off the tail */
hw_tail = gtt_offset + OA_TAKEN(hw_tail, partial_report_size);
hw_tail = OA_TAKEN(hw_tail, partial_report_size);
/* NB: The head we observe here might effectively be a little
* out of date. If a read() is in progress, the head could be
@ -574,7 +574,6 @@ static bool oa_buffer_check_unlocked(struct i915_perf_stream *stream)
head = stream->oa_buffer.head - gtt_offset;
read_tail = stream->oa_buffer.tail - gtt_offset;
hw_tail -= gtt_offset;
tail = hw_tail;
/* Walk the stream backward until we find a report with report