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Commit 4cf7c581 authored by Jordan Crouse's avatar Jordan Crouse
Browse files

msm: kgsl: Panic if global timestamp wait fails in context detach 



If we timeout while waiting for the last issued global timestamp for
a detaching context to expire (10 seconds!) then we are on a fast
train to crashville.  BUG_ON() so we can stand a chance of debugging
this very rare issue.

Change-Id: Ic0dedbaddb9cbc5681f9c872785ce26b7cf9b87b
Signed-off-by: default avatarJordan Crouse <jcrouse@codeaurora.org>
parent 25033bc7

drivers/gpu/msm/adreno_drawctxt.c

+8 −0
Original line number Diff line number Diff line
@@ -448,6 +448,14 @@ int adreno_drawctxt_detach(struct kgsl_context *context) 
	ret = adreno_drawctxt_wait_global(adreno_dev, context,

		drawctxt->internal_timestamp, 10 * 1000);



	/*

	 * If the wait for global fails then nothing after this point is likely

	 * to work very well - BUG_ON() so we can take advantage of the debug

	 * tools to figure out what the h - e - double hockey sticks happened

	 */



	BUG_ON(ret);



	kgsl_sharedmem_writel(device, &device->memstore,

			KGSL_MEMSTORE_OFFSET(context->id, soptimestamp),

			drawctxt->timestamp);