From 85b67bcb7e4a23ced05e7020bf5843b9857f6881 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Mon, 18 Apr 2016 20:11:50 -0700 Subject: perf, bpf: minimize the size of perf_trace_() tracepoint handler 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 Signed-off-by: Alexei Starovoitov Acked-by: Peter Zijlstra (Intel) Acked-by: Steven Rostedt Signed-off-by: David S. Miller --- include/trace/perf.h | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) (limited to 'include/trace') diff --git a/include/trace/perf.h b/include/trace/perf.h index a182306eefd7..88de5c205e86 100644 --- a/include/trace/perf.h +++ b/include/trace/perf.h @@ -64,16 +64,9 @@ perf_trace_##call(void *__data, proto) \ \ { assign; } \ \ - if (prog) { \ - *(struct pt_regs **)entry = __regs; \ - if (!trace_call_bpf(prog, entry) || hlist_empty(head)) { \ - perf_swevent_put_recursion_context(rctx); \ - return; \ - } \ - } \ - perf_trace_buf_submit(entry, __entry_size, rctx, \ - event_call->event.type, __count, __regs, \ - head, __task); \ + perf_trace_run_bpf_submit(entry, __entry_size, rctx, \ + event_call, __count, __regs, \ + head, __task); \ } /* -- cgit v1.2.3