From f49540b17c1c6fa5a0734cc1d8b57614fd2036be Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 6 Feb 2014 05:32:06 +0000 Subject: [PATCH] perf probe: Remove incorrect symbol check for --list Remove unneeded symbol check for --list option. This code actually checks whether the given symbol exists in the kernel. But this is incorrect for online kernel/module and offline module too: - For online kernel/module, the kprobes itself already ensured the symbol exist in the kernel. - For offline module, this code can't access the offlined modules. Ignore it. Signed-off-by: Masami Hiramatsu Cc: David Ahern Cc: "David A. Long" Cc: Ingo Molnar Cc: Namhyung Kim Cc: Oleg Nesterov Cc: Srikar Dronamraju Cc: Steven Rostedt Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20140206053206.29635.7453.stgit@kbuild-fedora.yrl.intra.hitachi.co.jp Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 9aa77832099a..a4649e7449c5 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -739,14 +739,6 @@ out: static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp, struct perf_probe_point *pp) { - struct symbol *sym; - - sym = __find_kernel_function_by_name(tp->symbol, NULL); - if (!sym) { - pr_err("Failed to find symbol %s in kernel.\n", tp->symbol); - return -ENOENT; - } - return convert_to_perf_probe_point(tp, pp); } -- 2.20.1