If you are using 64bit kernel,you need to handle the 32 bit ioctl. Ioctl number often related to a type size,while the same type might have different size for 32bit usrrland and 64bit kernal,so we often need compact_ioctl to translate. Lots of samples in drivers.
李晖 <lihui205...@gmail.com>编写：
hi,all
I am porting android to loongson2f, but when I boot the system,
the kernel panic, by adding printf statement, I found that when the
android file system init the ashmem failed. The following is the
calling path of init program:
main ->property_ini t->init_property_area ->init_workspace ->
ashmem_create_region ->ioctl(fd, ASHMEM_SET_SIZE, size)
the implementation of ashmem_create_region function is in system/core/
libcutils/ashmem-dev.c
the default size param of ioctl is 32768, and the linux kernel page
size is 16k (16384), so, I change the size param to 16384, but this
function failed again.
did anyone come across this problem, any idea or information is
appreciated!
andy
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- [loongson-dev] ioctl(fd, ASHMEM_SET_SIZE, size) failed 李晖
- Re: [loongson-dev] ioctl(fd, ASHMEM_SET_SIZE, size) failed zhangfx
