Messages in this thread | | | From | Pintu Kumar <> | Date | Fri, 6 Oct 2017 19:58:44 +0530 | Subject | Re: [PATCHv2 1/1] [tools]: android/ion: userspace test utility for ion buffer sharing |
| |
>> + >> + heap_type = ion_info->heap_type; >> + heap_size = ion_info->heap_size; >> + flag_type = ion_info->flag_type; >> + alloc_data.len = heap_size; >> + alloc_data.heap_id_mask = heap_type; > > The heap type and heap ID are not the same thing. You need > to determine the heap id from using the new query ioctl. >
Hello Laura, Can you point out some example on how to retrieve heap_id from query ioctl. Sorry, I am not able to figure out, how can I get a specific heap_id if I know the heap_type. Do, I need to query all the heaps? Then how do I map to heap_data for each heap? Here is what I am doing.
struct ion_heap_query query; struct ion_heap_data heap_data[5];
query.cnt = 5; /* Query ION heap_id_mask from ION heap */ ret = ioctl(ionfd, ION_IOC_HEAP_QUERY, &query); if (ret < 0) { fprintf(stderr, "<%s>: Failed: ION_IOC_HEAP_QUERY: %s\n", __func__, strerror(errno)); goto err_heap; }
After this how to map each heap_data[..] to query.heaps? Do you have any examples?
| |