From 24ddf71b9009291b829e6c30eb1b22e8838f7367 Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Thu, 5 Feb 2015 10:05:56 -0800 Subject: gpu: nvgpu: Use busy looping on memory ops Use busy looping on L2 and TLB maintenance operations. This speeds them up by an order of magnitude. Add also trace points to measure performance for memory ops and interrupt processing. Change-Id: Ic4a8525d3d946b2b8f57b4b8ddcfc61605619399 Signed-off-by: Terje Bergstrom Reviewed-on: http://git-master/r/681640 --- drivers/gpu/nvgpu/gk20a/mc_gk20a.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/gpu/nvgpu/gk20a/mc_gk20a.c') diff --git a/drivers/gpu/nvgpu/gk20a/mc_gk20a.c b/drivers/gpu/nvgpu/gk20a/mc_gk20a.c index 9f9e756b..86fea3a1 100644 --- a/drivers/gpu/nvgpu/gk20a/mc_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/mc_gk20a.c @@ -14,6 +14,7 @@ */ #include +#include #include "gk20a.h" #include "mc_gk20a.h" @@ -23,6 +24,8 @@ irqreturn_t mc_gk20a_isr_stall(struct gk20a *g) { u32 mc_intr_0; + trace_mc_gk20a_intr_stall(g->dev->name); + if (!g->power_on) return IRQ_NONE; @@ -37,6 +40,8 @@ irqreturn_t mc_gk20a_isr_stall(struct gk20a *g) /* flush previous write */ gk20a_readl(g, mc_intr_en_0_r()); + trace_mc_gk20a_intr_stall_done(g->dev->name); + return IRQ_WAKE_THREAD; } @@ -67,6 +72,8 @@ irqreturn_t mc_gk20a_intr_thread_stall(struct gk20a *g) gk20a_dbg(gpu_dbg_intr, "interrupt thread launched"); + trace_mc_gk20a_intr_thread_stall(g->dev->name); + mc_intr_0 = gk20a_readl(g, mc_intr_0_r()); gk20a_dbg(gpu_dbg_intr, "stall intr %08x\n", mc_intr_0); @@ -92,6 +99,8 @@ irqreturn_t mc_gk20a_intr_thread_stall(struct gk20a *g) /* flush previous write */ gk20a_readl(g, mc_intr_en_0_r()); + trace_mc_gk20a_intr_thread_stall_done(g->dev->name); + return IRQ_HANDLED; } -- cgit v1.2.2