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Fix issue #9 ("panic: <something>: called with spinlock or critical section held" on KabyLake) #39

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Fix issue #9 ("panic: <something>: called with spinlock or critical section held" on KabyLake) #39

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4db2db4
Use llist.h from base system.
wulf7 Nov 16, 2020
4fe96ee
Chase https://reviews.freebsd.org/D27171
wulf7 Nov 12, 2020
65ee394
Use asynchronous free() call in i915_sw_fence code to fix #9.
wulf7 Nov 12, 2020
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2 changes: 1 addition & 1 deletion drivers/gpu/drm/i915/i915_request.c
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Original file line number Diff line number Diff line change
Expand Up @@ -364,7 +364,7 @@ __i915_request_await_execution(struct i915_request *rq,
if (hook) {
cb->hook = hook;
cb->signal = i915_request_get(signal);
#ifdef __linux__
#if defined(__linux__) || (defined(__FreeBSD__) && __FreeBSD_version > 1300127)
cb->work.func = irq_execute_cb_hook;
#elif defined(__FreeBSD__)
/* irq_work is just a workqueue for us */
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4 changes: 4 additions & 0 deletions drivers/gpu/drm/i915/i915_sw_fence.c
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Original file line number Diff line number Diff line change
Expand Up @@ -384,7 +384,11 @@ static void dma_i915_sw_fence_wake(struct dma_fence *dma,

i915_sw_fence_set_error_once(cb->fence, dma->error);
i915_sw_fence_complete(cb->fence);
#if defined(__FreeBSD__) && __FreeBSD_version > 1300127
kfree_async(cb);
#else
kfree(cb);
#endif
}

static void timer_i915_sw_fence_wake(struct timer_list *t)
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5 changes: 5 additions & 0 deletions linuxkpi/gplv2/include/linux/llist.h
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
#include <sys/param.h>
#if __FreeBSD_version < 1300128
#ifndef _LINUX_GPLV2_LLIST_H
#define _LINUX_GPLV2_LLIST_H
/*
Expand Down Expand Up @@ -223,3 +225,6 @@ struct llist_node *llist_reverse_order(struct llist_node *head);

#endif /* _LINUX_GPLV2_LLIST_H */

#else
#include_next <linux/llist.h>
#endif
3 changes: 3 additions & 0 deletions linuxkpi/gplv2/src/linux_llist.c
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
#include <sys/param.h>
#if __FreeBSD_version < 1300128
/*
* Lock-less NULL terminated single linked list
*
Expand Down Expand Up @@ -99,3 +101,4 @@ struct llist_node *llist_reverse_order(struct llist_node *head)

return new_head;
}
#endif