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<div>HI:</div>
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<div>Can anybody point out that from which pool that function will allocate coherent memory for DMA use?</div>
<div>I checked the function source code, the comments is as follow:</div>
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<div><font face="Courier New, monospace" size="2"><i><b>This function should be only called from per-arch dma_alloc_coherent()</b></i></font></div>
<div><font face="Courier New, monospace" size="2"><i><b>* to support allocation from per-device coherent memory pools.</b></i></font></div>
<div><font face="Courier New, monospace" size="2"><i><b>*</b></i></font></div>
<div><font face="Courier New, monospace" size="2"><i><b>* Returns 0 if dma_alloc_coherent should continue with allocating from</b></i></font></div>
<div><font face="Courier New, monospace" size="2"><i><b>* generic memory areas, or !0 if dma_alloc_coherent should return @ret.</b></i></font></div>
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<div>Can anyone elaborate it? What¡¯s per-device coherent memory pools, when are those pools setup and how?</div>
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<div>Thanks a lot!</div>
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<div>Rick lei</div>
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