From 293d5b43948309434568f4dcbb36cce4c3c51bd5 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Fri, 26 Aug 2016 01:24:57 +0900 Subject: perf probe: Support probing on offline cross-arch binary Support probing on offline cross-architecture binary by adding getting the target machine arch from ELF and choose correct register string for the machine. Here is an example: ----- $ perf probe --vmlinux=./vmlinux-arm --definition 'do_sys_open $params' p:probe/do_sys_open do_sys_open+0 dfd=%r5:s32 filename=%r1:u32 flags=%r6:s32 mode=%r3:u16 ----- Here, we can get probe/do_sys_open from above and append it to to the target machine's tracing/kprobe_events file in the tracefs mountput, usually /sys/kernel/debug/tracing/kprobe_events (or /sys/kernel/tracing/kprobe_events). Signed-off-by: Masami Hiramatsu Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/147214229717.23638.6440579792548044658.stgit@devbox [ Add definition for EM_AARCH64 to fix the build on at least centos 6, debian 7 & ubuntu 12.04.5 ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/Build | 1 + 1 file changed, 1 insertion(+) (limited to 'tools/perf/util/Build') diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 91c5f6e1af59..f1a6d17c5a37 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -98,6 +98,7 @@ endif libperf-$(CONFIG_DWARF) += probe-finder.o libperf-$(CONFIG_DWARF) += dwarf-aux.o +libperf-$(CONFIG_DWARF) += dwarf-regs.o libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o libperf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind-local.o -- cgit v1.2.3