Re: [PATCH 0/8] x86/ftrace: Add direct batch interface
From: Alexei Starovoitov
Date: Wed Sep 01 2021 - 11:23:53 EST
On Tue, Aug 31, 2021 at 2:50 AM Jiri Olsa <jolsa@xxxxxxxxxx> wrote:
> adding interface to maintain multiple direct functions
> within single calls. It's a base for follow up bpf batch
> attach functionality.
> New interface:
> int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr)
> int unregister_ftrace_direct_multi(struct ftrace_ops *ops)
> int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr)
> that allows to register/unregister/modify direct function 'addr'
> with struct ftrace_ops object. The ops filter can be updated
> before with ftrace_set_filter_ip calls
> 1) patches (1-4) that fix the ftrace graph tracing over the function
> with direct trampolines attached
> 2) patches (5-8) that add batch interface for ftrace direct function
> Also available at (based on Steven's ftrace/core branch):
Could you review and merge this set for this merge window,
so we can process related bpf bits for the next cycle?