linux-kernel - Re: [PATCH 001/115] gpu: ion: Add ION Memory Manager

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Date:	Sat, 14 Dec 2013 11:43:43 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Android Kernel Team <kernel-team@...roid.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Jesse Barker <jesse.barker@....com>,
	Colin Cross <ccross@...roid.com>,
	Rebecca Schultz Zavin <rebecca@...roid.com>
Subject: Re: [PATCH 001/115] gpu: ion: Add ION Memory Manager

On 12/14/2013 09:06 AM, Greg KH wrote:
> On Fri, Dec 13, 2013 at 05:18:00PM -0800, John Stultz wrote:
>> 0117-ion-Reenable-the-build.patch - This can be applied to the end of
>> the series, or folded into the last patch "ion: Update system heap
>> shrinker to use the new count/scan interface"
> Was there a 0116 patch somewhere?
No.. the disable build patch was inserted between patch 1 and 2, so
after the renumbering the re-enable patch was 117.

When I selected the disable patch to send I renamed it 0001 just to make
it more clear which one it would apply to.

Sorry for the confusion.

> Everything works fine until this one (i.e. the driver doesn't build),
> but after applying this patch, the build breaks with a ton of undefined
> symbols at link time, here's a sample of some of them:
>
> ERROR: "ion_carveout_heap_destroy" [drivers/staging/android/ion/ion_heap.ko] undefined!
> ERROR: "ion_chunk_heap_destroy" [drivers/staging/android/ion/ion_heap.ko] undefined!
> ERROR: "ion_system_heap_create" [drivers/staging/android/ion/ion_heap.ko] undefined!
> ERROR: "ion_carveout_heap_create" [drivers/staging/android/ion/ion_heap.ko] undefined!
> ERROR: "ion_system_contig_heap_create" [drivers/staging/android/ion/ion_heap.ko] undefined!
> ERROR: "ion_cma_heap_create" [drivers/staging/android/ion/ion_heap.ko] undefined!
> ERROR: "ion_chunk_heap_create" [drivers/staging/android/ion/ion_heap.ko] undefined!
> ERROR: "ion_buffer_destroy" [drivers/staging/android/ion/ion_heap.ko] undefined!
> ERROR: "ion_heap_map_user" [drivers/staging/android/ion/ion_chunk_heap.ko] undefined!
> ERROR: "ion_heap_unmap_kernel" [drivers/staging/android/ion/ion_chunk_heap.ko] undefined!
> ERROR: "ion_heap_map_kernel" [drivers/staging/android/ion/ion_chunk_heap.ko] undefined!
> ERROR: "ion_heap_pages_zero" [drivers/staging/android/ion/ion_chunk_heap.ko] undefined!
> ERROR: "ion_pages_sync_for_device" [drivers/staging/android/ion/ion_chunk_heap.ko] undefined!
> ERROR: "ion_buffer_cached" [drivers/staging/android/ion/ion_chunk_heap.ko] undefined!
> ERROR: "ion_heap_buffer_zero" [drivers/staging/android/ion/ion_chunk_heap.ko] undefined!
>
> So I'm not going to apply this patch, but I have the 115 previous
> patches (I took your modified 001 patch that you sent off-list to me.)

? Hrmm. I'm not seeing this (I wouldn't have sent the patches if I did!).

If you have the chance, could you send me your config?

> Care to fix up the symbol issues in a new series of patches and then
> enabling the driver to build?
Will do.

thanks
-john


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