From 42351c66aedcd142de33c0ae17bbde09eaff1b3d Mon Sep 17 00:00:00 2001 From: Joshua Aberback Date: Mon, 1 Apr 2019 15:21:24 -0400 Subject: drm/amd/display: Add profiling tools for bandwidth validation [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 Reviewed-by: Tony Cheng Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/gpu/drm/amd') diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c index 371d96290d86..c9b7340c9601 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c @@ -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; } -- cgit v1.2.3