linux-kernel - [PATCH v1 1/2] perf bench uprobe: Remove lib64 from libc.so.6 binary path

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Date: Fri,  5 Apr 2024 21:09:10 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, Kees Cook <keescook@...omium.org>, 
	Andrei Vagin <avagin@...gle.com>, linux-perf-users@...r.kernel.org, 
	linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: [PATCH v1 1/2] perf bench uprobe: Remove lib64 from libc.so.6 binary path

bpf_program__attach_uprobe_opts will search LD_LIBRARY_PATH and so
specifying `/lib64` is unnecessary and causes failures for libc.so.6
paths like `/lib/x86_64-linux-gnu/libc.so.6`.

Fixes: 7b47623b8cae ("perf bench uprobe trace_printk: Add entry attaching an BPF program that does a trace_printk")
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/bench/uprobe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/bench/uprobe.c b/tools/perf/bench/uprobe.c
index 5c71fdc419dd..b722ff88fe7d 100644
--- a/tools/perf/bench/uprobe.c
+++ b/tools/perf/bench/uprobe.c
@@ -47,7 +47,7 @@ static const char * const bench_uprobe_usage[] = {
 #define bench_uprobe__attach_uprobe(prog) \
 	skel->links.prog = bpf_program__attach_uprobe_opts(/*prog=*/skel->progs.prog, \
 							   /*pid=*/-1, \
-							   /*binary_path=*/"/lib64/libc.so.6", \
+							   /*binary_path=*/"libc.so.6", \
 							   /*func_offset=*/0, \
 							   /*opts=*/&uprobe_opts); \
 	if (!skel->links.prog) { \
-- 
2.44.0.478.gd926399ef9-goog