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| author | Miaoqian Lin <linmq006@gmail.com> | 2021-12-12 14:56:09 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-12-16 16:18:12 +0100 |
| commit | 8acf3793eae4d809658b1ebeed68d818d6d38142 (patch) | |
| tree | 667de5ae391e515a6fd1ea087a07473822b0e3c9 /tools/perf/util/bpf-loader.c | |
| parent | perf cs-etm: Remove duplicate and incorrect aux size checks (diff) | |
| download | linux-8acf3793eae4d809658b1ebeed68d818d6d38142.tar.xz linux-8acf3793eae4d809658b1ebeed68d818d6d38142.zip | |
perf bpf-loader: Use IS_ERR_OR_NULL() to clean code and fix check
Use IS_ERR_OR_NULL() to make the code cleaner.
Also if the priv is NULL, it's improper to call PTR_ERR(priv).
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: unlisted-recipients
Link: http://lore.kernel.org/lkml/20211212135613.20000-1-linmq006@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/bpf-loader.c')
| -rw-r--r-- | tools/perf/util/bpf-loader.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c index fbb3c4057c30..22662fc85cc9 100644 --- a/tools/perf/util/bpf-loader.c +++ b/tools/perf/util/bpf-loader.c @@ -421,7 +421,7 @@ preproc_gen_prologue(struct bpf_program *prog, int n, size_t prologue_cnt = 0; int i, err; - if (IS_ERR(priv) || !priv || priv->is_tp) + if (IS_ERR_OR_NULL(priv) || priv->is_tp) goto errout; pev = &priv->pev; @@ -570,7 +570,7 @@ static int hook_load_preprocessor(struct bpf_program *prog) bool need_prologue = false; int err, i; - if (IS_ERR(priv) || !priv) { + if (IS_ERR_OR_NULL(priv)) { pr_debug("Internal error when hook preprocessor\n"); return -BPF_LOADER_ERRNO__INTERNAL; } @@ -642,8 +642,11 @@ int bpf__probe(struct bpf_object *obj) goto out; priv = bpf_program__priv(prog); - if (IS_ERR(priv) || !priv) { - err = PTR_ERR(priv); + if (IS_ERR_OR_NULL(priv)) { + if (!priv) + err = -BPF_LOADER_ERRNO__INTERNAL; + else + err = PTR_ERR(priv); goto out; } @@ -693,7 +696,7 @@ int bpf__unprobe(struct bpf_object *obj) struct bpf_prog_priv *priv = bpf_program__priv(prog); int i; - if (IS_ERR(priv) || !priv || priv->is_tp) + if (IS_ERR_OR_NULL(priv) || priv->is_tp) continue; for (i = 0; i < priv->pev.ntevs; i++) { @@ -751,7 +754,7 @@ int bpf__foreach_event(struct bpf_object *obj, struct perf_probe_event *pev; int i, fd; - if (IS_ERR(priv) || !priv) { + if (IS_ERR_OR_NULL(priv)) { pr_debug("bpf: failed to get private field\n"); return -BPF_LOADER_ERRNO__INTERNAL; } |