Commit 589f4924 authored by Umesh Nerlige Ramappa's avatar Umesh Nerlige Ramappa
Browse files

i915/perf: Do not add ggtt offset to hw_tail 



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

Signed-off-by: default avatarUmesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: default avatarAshutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230605193923.1836048-3-umesh.nerlige.ramappa@intel.com
parent 9cc31938

drivers/gpu/drm/i915/i915_perf.c

+1 −2
Original line number Diff line number Diff line
@@ -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	 * out of date.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