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/pci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/gpu/nvgpu/pci.c') diff --git a/drivers/gpu/nvgpu/pci.c b/drivers/gpu/nvgpu/pci.c index 39559dac..69e16267 100644 --- a/drivers/gpu/nvgpu/pci.c +++ b/drivers/gpu/nvgpu/pci.c @@ -236,8 +236,7 @@ static irqreturn_t nvgpu_pci_isr(int irq, void *dev_id) g->ops.xve.rearm_msi(g); #endif - return (ret_stall == IRQ_NONE && ret_nonstall == IRQ_NONE) ? - IRQ_NONE : IRQ_WAKE_THREAD; + return (ret_stall == IRQ_NONE) ? ret_nonstall : IRQ_WAKE_THREAD; } static irqreturn_t nvgpu_pci_intr_thread(int irq, void *dev_id) @@ -245,7 +244,6 @@ static irqreturn_t nvgpu_pci_intr_thread(int irq, void *dev_id) struct gk20a *g = dev_id; g->ops.mc.isr_thread_stall(g); - g->ops.mc.isr_thread_nonstall(g); return IRQ_HANDLED; } -- cgit v1.2.2