Thanks, I will check it out.
On 09-Feb-2018 12:50 AM, <valdis.kletnieks@xxxxxx> 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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