linux-kernel - [PATCH v1 6/7] perf trace: 5sec fix libbpf 1.0+ compatibility

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Date:   Wed,  2 Nov 2022 21:54:36 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Leo Yan <leo.yan@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH v1 6/7] perf trace: 5sec fix libbpf 1.0+ compatibility

Avoid use of tools/perf/include/bpf/bpf.h and use the more regular BPF
headers.

Note, on testing the probe was unable to attach and the program failed.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/examples/bpf/5sec.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tools/perf/examples/bpf/5sec.c b/tools/perf/examples/bpf/5sec.c
index e6b6181c6dc6..f22312c64713 100644
--- a/tools/perf/examples/bpf/5sec.c
+++ b/tools/perf/examples/bpf/5sec.c
@@ -39,13 +39,15 @@
    Copyright (C) 2018 Red Hat, Inc., Arnaldo Carvalho de Melo <acme@...hat.com>
 */
 
-#include <bpf.h>
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
 
 #define NSEC_PER_SEC	1000000000L
 
-int probe(hrtimer_nanosleep, rqtp)(void *ctx, int err, long long sec)
+SEC("hrtimer_nanosleep=hrtimer_nanosleep rqtp")
+int hrtimer_nanosleep(void *ctx, int err, long long sec)
 {
 	return sec / NSEC_PER_SEC == 5ULL;
 }
+char _license[] SEC("license") = "GPL";
 
-license(GPL);
-- 
2.38.1.273.g43a17bfeac-goog