Joel Fernandes writes: > On Thu, Feb 14, 2019 at 07:19:29PM -0800, Alexei Starovoitov wrote: >> On Mon, Feb 11, 2019 at 09:35:59AM -0500, Joel Fernandes (Google) wrote: >> > Introduce in-kernel headers and other artifacts which are made available >> > as an archive through proc (/proc/kheaders.txz file). This archive makes >> > it possible to build kernel modules, run eBPF programs, and other >> > tracing programs that need to extend the kernel for tracing purposes >> > without any dependency on the file system having headers and build >> > artifacts. >> > >> > On Android and embedded systems, it is common to switch kernels but not >> > have kernel headers available on the file system. Raw kernel headers >> > also cannot be copied into the filesystem like they can be on other >> > distros, due to licensing and other issues. There's no linux-headers >> > package on Android. Further once a different kernel is booted, any >> > headers stored on the file system will no longer be useful. By storing >> > the headers as a compressed archive within the kernel, we can avoid these >> > issues that have been a hindrance for a long time. >> >> The set looks good to me and since the main use case is building bpf progs >> I can route it via bpf-next tree if there are no objections. >> Masahiro, could you please ack it? >> > > Yes, eBPF is one of the usecases. After this, I am also planning to send > patches to BCC so that it can use this feature when compiling C to eBPF. > Tested-by: Manoj Rao <linux@xxxxxxxxxxxxxxxx> I think this can definitely make it easier to use eBPF on Android. Thanks for initiating this. > Thanks! > > - Joel -- Manoj http://www.mycpu.org
