From 403874fa75dbb00e974a8d0f88b6e92be01ba42e Mon Sep 17 00:00:00 2001 From: David Nieto Date: Mon, 6 Feb 2017 15:44:55 -0800 Subject: gpu: nvgpu: refactor interrupt handling JIRA: EVLR-1004 (*) Refactor the non-stalling interrupt path to execute clear on the top half, so on dGPU case processing of stalling interrupts does not block non-stalling one. (*) Use a worker thread to do semaphore wakeups and allow batching of the non-stalling operations. (*) Fix a bug where some gpus will not properly track the completion of interrupts, preventing safe driver unloads Change-Id: Icc90a3acba544c97ec6a9285ab235d337ab9eefa Signed-off-by: David Nieto Reviewed-on: http://git-master/r/1312796 Reviewed-by: svccoveritychecker GVS: Gerrit_Virtual_Submit Reviewed-by: Lakshmanan M Reviewed-by: Terje Bergstrom Reviewed-by: Navneet Kumar --- drivers/gpu/nvgpu/gk20a/fifo_gk20a.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/gpu/nvgpu/gk20a/fifo_gk20a.c') diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c index b2efc1fa..04d68872 100644 --- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c @@ -2377,7 +2377,7 @@ void gk20a_fifo_isr(struct gk20a *g) return; } -void gk20a_fifo_nonstall_isr(struct gk20a *g) +int gk20a_fifo_nonstall_isr(struct gk20a *g) { u32 fifo_intr = gk20a_readl(g, fifo_intr_0_r()); u32 clear_intr = 0; @@ -2389,9 +2389,7 @@ void gk20a_fifo_nonstall_isr(struct gk20a *g) gk20a_writel(g, fifo_intr_0_r(), clear_intr); - gk20a_channel_semaphore_wakeup(g, false); - - return; + return gk20a_nonstall_ops_wakeup_semaphore; } void gk20a_fifo_issue_preempt(struct gk20a *g, u32 id, bool is_tsg) -- cgit v1.2.2