Query on mechanisms to communicate between kernel modules in Linux

[Neil Thomas]

Thanks, I will check it out.

On 09-Feb-2018 12:50 AM, <valdis.kletnieks at vt.edu> wrote:

> On Thu, 08 Feb 2018 23:38:01 +0530, Neil Thomas said:
>
> > I am just a beginner. I have tried procfs, Netlink socket to communicate
> > between user space and kernel space and it works fine.
> >
> > I am developing a monitoring utility to trace the VFS operation and find
> > the frequency of VFS function calls. This monitoring utility runs in
> kernel
> > space. We have to record the occurrence of each  VFS function calls (like
> > vfs_open(), vfs_read()).  I don't know  which is best mechanism to report
> > this VFS event to the monitoring utility.
> >
> > Could anyone please suggest the best mechanism to transfer data
> frequently
> > between kernel modules.
>
> There's a perfectly good perf-based function trace facility that will
> provide
> this info to userspace.
>
> http://www.brendangregg.com/perf.html#StaticKernelTracing
>
>
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