Re: [PATCH net-next] perf, bpf: minimize the size of perf_trace_() tracepoint handler

[David Miller]

From: Alexei Starovoitov <ast@xxxxxx>
Date: Mon, 18 Apr 2016 20:11:50 -0700

> move trace_call_bpf() into helper function to minimize the size
> of perf_trace_*() tracepoint handlers.
>     text	   data	    bss	    dec	 	   hex	filename
> 10541679	5526646	2945024	19013349	1221ee5	vmlinux_before
> 10509422	5526646	2945024	18981092	121a0e4	vmlinux_after
> 
> It may seem that perf_fetch_caller_regs() can also be moved,
> but that is incorrect, since ip/sp will be wrong.
> 
> bpf+tracepoint performance is not affected, since
> perf_swevent_put_recursion_context() is now inlined.
> export_symbol_gpl can also be dropped.
> 
> No measurable change in normal perf tracepoints.
> 
> Suggested-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>

Applied, thanks Alexei.