Hi Fernando,
Actually it's not ok at least with the following part:
drivers/dsp/bridge/wmd/msg_sm.c:
...
188 (void)SYNC_EnterCS(hMsgMgr->hSyncCS);
^^^^^^^^^^^^^^^^^^
189 /* Initialize message frames and put in appropriate queues */
190 for (i = 0; i < uMaxMsgs && DSP_SUCCEEDED(status); i++) {
191 status = AddNewMsg(hMsgMgr->msgFreeList);
192 if (DSP_SUCCEEDED(status)) {
193 uNumAllocated++;
It causes:
BUG: sleeping function called from invalid context at mm/slab.c:3044
We need to extend "MEM_POOLATTRS" as Hari suggested originally.
Hiroshi DOYU
From: "ext Guzman Lugo, Fernando" <x0095840@xxxxxx>
Subject: [OMAPZOOM][PATCH]DSPBRIDGE: Change GFP_ATOMIC to GFP_KERNEL
Date: Wed, 21 Jan 2009 18:46:01 -0600
>
> From: Fernando Guzman Lugo <x0095840@xxxxxx>
> Date: Wed, 21 Jan 2009 17:39:38 -0600
> Subject: [PATCH] BRIDGE: Change GFP_ATOMIC to GFP_KERNEL
>
> This patch replace the memory allocations which use
> GFP_ATOMIC with GFP_KERNEL since the calls for memory
> allocation in dspbridge are not in interrupt context.
>
> Signed-off-by: Fernando Guzman Lugo <x0095840@xxxxxx>
> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@xxxxxxxxx>
>
> ---
> drivers/dsp/bridge/services/mem.c | 18 +++++++++---------
> 1 files changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/dsp/bridge/services/mem.c b/drivers/dsp/bridge/services/mem.c
> index 9256744..95efe92
> --- a/drivers/dsp/bridge/services/mem.c
> +++ b/drivers/dsp/bridge/services/mem.c
> @@ -281,10 +281,10 @@ void *MEM_Alloc(u32 cBytes, enum MEM_POOLATTRS type)
> /* If non-paged memory required, see note at top of file. */
> case MEM_PAGED:
> #ifndef MEM_CHECK
> - pMem = kmalloc(cBytes, GFP_ATOMIC);
> + pMem = kmalloc(cBytes, GFP_KERNEL);
> #else
> pMem = kmalloc(cBytes + sizeof(struct memInfo),
> - GFP_ATOMIC);
> + GFP_KERNEL);
> if (pMem) {
> pMem->size = cBytes;
> pMem->caller = __builtin_return_address(0);
> @@ -303,11 +303,11 @@ void *MEM_Alloc(u32 cBytes, enum MEM_POOLATTRS type)
> case MEM_LARGEVIRTMEM:
> #ifndef MEM_CHECK
> /* FIXME - Replace with 'vmalloc' after BP fix */
> - pMem = __vmalloc(cBytes, GFP_ATOMIC, PAGE_KERNEL);
> + pMem = __vmalloc(cBytes, GFP_KERNEL, PAGE_KERNEL);
> #else
> /* FIXME - Replace with 'vmalloc' after BP fix */
> pMem = __vmalloc((cBytes + sizeof(struct memInfo)),
> - GFP_ATOMIC, PAGE_KERNEL);
> + GFP_KERNEL, PAGE_KERNEL);
> if (pMem) {
> pMem->size = cBytes;
> pMem->caller = __builtin_return_address(0);
> @@ -357,7 +357,7 @@ void *MEM_AllocPhysMem(u32 cBytes, u32 ulAlign, OUT u32 *pPhysicalAddress)
> (u32 *)&paMem);
> } else
> pVaMem = dma_alloc_coherent(NULL, cBytes, &paMem,
> - GFP_ATOMIC);
> + GFP_KERNEL);
> if (pVaMem == NULL) {
> *pPhysicalAddress = 0;
> GT_1trace(MEM_debugMask, GT_6CLASS,
> @@ -389,13 +389,13 @@ void *MEM_Calloc(u32 cBytes, enum MEM_POOLATTRS type)
> /* If non-paged memory required, see note at top of file. */
> case MEM_PAGED:
> #ifndef MEM_CHECK
> - pMem = kmalloc(cBytes, GFP_ATOMIC);
> + pMem = kmalloc(cBytes, GFP_KERNEL);
> if (pMem)
> memset(pMem, 0, cBytes);
>
> #else
> pMem = kmalloc(cBytes + sizeof(struct memInfo),
> - GFP_ATOMIC);
> + GFP_KERNEL);
> if (pMem) {
> memset((void *)((u32)pMem +
> sizeof(struct memInfo)), 0, cBytes);
> @@ -414,14 +414,14 @@ void *MEM_Calloc(u32 cBytes, enum MEM_POOLATTRS type)
> case MEM_LARGEVIRTMEM:
> #ifndef MEM_CHECK
> /* FIXME - Replace with 'vmalloc' after BP fix */
> - pMem = __vmalloc(cBytes, GFP_ATOMIC, PAGE_KERNEL);
> + pMem = __vmalloc(cBytes, GFP_KERNEL, PAGE_KERNEL);
> if (pMem)
> memset(pMem, 0, cBytes);
>
> #else
> /* FIXME - Replace with 'vmalloc' after BP fix */
> pMem = __vmalloc(cBytes + sizeof(struct memInfo),
> - GFP_ATOMIC, PAGE_KERNEL);
> + GFP_KERNEL, PAGE_KERNEL);
> if (pMem) {
> memset((void *)((u32)pMem +
> sizeof(struct memInfo)), 0, cBytes);
> --
> 1.5.6.4
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