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drm/amd/display: Add profiling tools for bandwidth validation

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[Why]
We used this change to investigate the performance of bandwidth validation,
it will be useful to have if we need to investigate further.

[How]
We use performance counter tick numbers to profile performance, they live
at dc->debug.bw_val_profile (set .enable in debugger to turn on measuring).

Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Joshua Aberback 2019-04-01 15:21:24 -04:00 committed by Alex Deucher
parent 254eb07cb0
commit 42351c66ae
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
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@ -1912,6 +1912,8 @@ bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context,
{
bool out = false;
BW_VAL_TRACE_SETUP();
int pipe_cnt, i, pipe_idx, vlevel, vlevel_unsplit;
int pipe_split_from[MAX_PIPES];
bool odm_capable = context->bw_ctx.dml.ip.odm_capable;
@ -1924,6 +1926,8 @@ bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context,
display_e2e_pipe_params_st *pipes = kzalloc(dc->res_pool->pipe_count * sizeof(display_e2e_pipe_params_st), GFP_KERNEL);
DC_LOGGER_INIT(dc->ctx->logger);
BW_VAL_TRACE_COUNT();
ASSERT(pipes);
if (!pipes)
return false;
@ -1957,6 +1961,7 @@ bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context,
pipe_cnt = dcn20_populate_dml_pipes_from_context(dc, &context->res_ctx, pipes);
if (!pipe_cnt) {
BW_VAL_TRACE_SKIP(pass);
out = true;
goto validate_out;
}
@ -2117,7 +2122,10 @@ bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context,
}
#endif
BW_VAL_TRACE_END_VOLTAGE_LEVEL();
if (fast_validate) {
BW_VAL_TRACE_SKIP(fast);
out = true;
goto validate_out;
}
@ -2213,6 +2221,8 @@ bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context,
!= dm_dram_clock_change_unsupported;
context->bw_ctx.bw.dcn.clk.dppclk_khz = 0;
BW_VAL_TRACE_END_WATERMARKS();
for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
if (!context->res_ctx.pipe_ctx[i].stream)
continue;
@ -2261,11 +2271,14 @@ validate_fail:
DC_LOG_WARNING("Mode Validation Warning: %s failed validation.\n",
dml_get_status_message(context->bw_ctx.dml.vba.ValidationStatus[context->bw_ctx.dml.vba.soc.num_states]));
BW_VAL_TRACE_SKIP(fail);
out = false;
validate_out:
kfree(pipes);
BW_VAL_TRACE_FINISH();
return out;
}