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authorYonghong Song <yhs@fb.com>2019-02-01 16:14:15 -0800
committerAlexei Starovoitov <ast@kernel.org>2019-02-04 09:40:58 -0800
commit9d100a19ffa519b17a0e998918337da5386e47fb (patch)
tree33ba27812e8abc05913c8f57b654e30f1e1e1cd6 /tools/lib/bpf/libbpf_util.h
parenttools/bpf: move libbpf pr_* debug print functions to headers (diff)
downloadlinux-dev-9d100a19ffa519b17a0e998918337da5386e47fb.tar.xz
linux-dev-9d100a19ffa519b17a0e998918337da5386e47fb.zip
tools/bpf: print out btf log at LIBBPF_WARN level
Currently, the btf log is allocated and printed out in case of error at LIBBPF_DEBUG level. Such logs from kernel are very important for debugging. For example, bpf syscall BPF_PROG_LOAD command can get verifier logs back to user space. In function load_program() of libbpf.c, the log buffer is allocated unconditionally and printed out at pr_warning() level. Let us do the similar thing here for btf. Allocate buffer unconditionally and print out error logs at pr_warning() level. This can reduce one global function and optimize for common situations where pr_warning() is activated either by default or by user supplied debug output function. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to '')
-rw-r--r--tools/lib/bpf/libbpf_util.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/tools/lib/bpf/libbpf_util.h b/tools/lib/bpf/libbpf_util.h
index 0fdc3b1d0e33..81ecda0cb9c9 100644
--- a/tools/lib/bpf/libbpf_util.h
+++ b/tools/lib/bpf/libbpf_util.h
@@ -14,8 +14,6 @@ extern void libbpf_print(enum libbpf_print_level level,
const char *format, ...)
__attribute__((format(printf, 2, 3)));
-extern bool libbpf_print_level_available(enum libbpf_print_level level);
-
#define __pr(level, fmt, ...) \
do { \
libbpf_print(level, "libbpf: " fmt, ##__VA_ARGS__); \