On Thu, 15 Feb 2024 11:11:34 -0500 Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > On Wed, 7 Feb 2024 00:12:40 +0900 > "Masami Hiramatsu (Google)" <mhiramat@xxxxxxxxxx> wrote: > > > From: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> > > > > Add ftrace_partial_regs() which converts the ftrace_regs to pt_regs. > > If the architecture defines its own ftrace_regs, this copies partial > > registers to pt_regs and returns it. If not, ftrace_regs is the same as > > pt_regs and ftrace_partial_regs() will return ftrace_regs::regs. > > This says what this patch is doing and not why it is doing it. Hmm, OK. The reason is the eBPF needs this to keep the same pt_regs interface to access registers. Thus when replacing the pt_regs with ftrace_regs in fprobes (which is used by kprobe_multi eBPF event), this will be required. I'll add this to next version. Thanks, > > -- Steve > > > > > Signed-off-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> > > Acked-by: Florent Revest <revest@xxxxxxxxxxxx> > > --- > > Changes from previous series: NOTHING, just forward ported. > > --- -- Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
