From 9e2f7d98d4cf2845d3dfea1653f3d6bedd4fb1e6 Mon Sep 17 00:00:00 2001 From: Alex Waterman Date: Tue, 8 Nov 2016 11:28:35 -0800 Subject: gpu: nvgpu: Move deferred interrupt wait code Move the code that waits for deferred interrupts to nvgpu_common.c and make it global. Also rename that function to use nvgpu_ as the function prefix. Bug 1816516 Bug 1807277 Change-Id: I42c4982ea853af5489051534219bfe8b253c2784 Signed-off-by: Alex Waterman Reviewed-on: http://git-master/r/1250027 (cherry picked from commit cb6fb03e20b08e5c3606ae8a5a9c237bfdf9e7da) Reviewed-on: http://git-master/r/1274475 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom --- drivers/gpu/nvgpu/gk20a/channel_gk20a.c | 29 ++--------------------------- 1 file changed, 2 insertions(+), 27 deletions(-) (limited to 'drivers/gpu/nvgpu/gk20a/channel_gk20a.c') diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c index 7b5013ea..136c28d0 100644 --- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c @@ -871,31 +871,6 @@ static void gk20a_free_error_notifiers(struct channel_gk20a *ch) mutex_unlock(&ch->error_notifier_mutex); } -/* Returns delta of cyclic integers a and b. If a is ahead of b, delta - * is positive */ -static int cyclic_delta(int a, int b) -{ - return a - b; -} - -static void gk20a_wait_for_deferred_interrupts(struct gk20a *g) -{ - int stall_irq_threshold = atomic_read(&g->hw_irq_stall_count); - int nonstall_irq_threshold = atomic_read(&g->hw_irq_nonstall_count); - - /* wait until all stalling irqs are handled */ - wait_event(g->sw_irq_stall_last_handled_wq, - cyclic_delta(stall_irq_threshold, - atomic_read(&g->sw_irq_stall_last_handled)) - <= 0); - - /* wait until all non-stalling irqs are handled */ - wait_event(g->sw_irq_nonstall_last_handled_wq, - cyclic_delta(nonstall_irq_threshold, - atomic_read(&g->sw_irq_nonstall_last_handled)) - <= 0); -} - static void gk20a_wait_until_counter_is_N( struct channel_gk20a *ch, atomic_t *counter, int wait_value, wait_queue_head_t *wq, const char *caller, const char *counter_name) @@ -944,7 +919,7 @@ static void gk20a_free_channel(struct channel_gk20a *ch, bool force) /* wait until all pending interrupts for recently completed * jobs are handled */ - gk20a_wait_for_deferred_interrupts(g); + nvgpu_wait_for_deferred_interrupts(g); /* prevent new refs */ spin_lock(&ch->ref_obtain_lock); @@ -1043,7 +1018,7 @@ static void gk20a_free_channel(struct channel_gk20a *ch, bool force) /* make sure we don't have deferred interrupts pending that * could still touch the channel */ - gk20a_wait_for_deferred_interrupts(g); + nvgpu_wait_for_deferred_interrupts(g); unbind: if (gk20a_is_channel_marked_as_tsg(ch)) -- cgit v1.2.2