Messages in this thread | | | From | Manoj <> | Subject | Re: [PATCH v2 1/2] Provide in-kernel headers for making it easy to extend the kernel | Date | Sat, 16 Feb 2019 11:10:14 -0800 |
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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@manojrajarao.com>
I think this can definitely make it easier to use eBPF on Android. Thanks for initiating this.
> Thanks! > > - Joel
-- Manoj http://www.mycpu.org
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