I haven't tested if this breaks some perf trace functionality,
hence RFC ;-)
The perf compilation fails for NO_LIBBPF=1 DEBUG=1 with:
$ make NO_LIBBPF=1 DEBUG=1
BUILD: Doing 'make -j8' parallel build
CC builtin-trace.o
LD perf-in.o
LINK perf
/usr/bin/ld: perf-in.o: in function `trace__find_bpf_map_by_name':
/home/jolsa/kernel/linux-perf/tools/perf/builtin-trace.c:4608: undefined
reference to `bpf_object__find_map_by_name'
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile.perf:631: perf] Error 1
make[1]: *** [Makefile.perf:225: sub-make] Error 2
make: *** [Makefile:70: all] Error 2
Moving trace__find_bpf_map_by_name calls under HAVE_LIBBPF_SUPPORT
ifdef and add make test for this.
Signed-off-by: Jiri Olsa <[email protected]>
---
tools/perf/builtin-trace.c | 54 ++++++++++++++++++++++++--------------
tools/perf/tests/make | 1 +
2 files changed, 35 insertions(+), 20 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 56bcf1ab19f8..61bafca1018a 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -3174,6 +3174,26 @@ static int trace__set_ev_qualifier_tp_filter(struct
trace *trace)
}
#ifdef HAVE_LIBBPF_SUPPORT
+static struct bpf_map *trace__find_bpf_map_by_name(struct trace *trace, const
char *name)
+{
+ if (trace->bpf_obj == NULL)
+ return NULL;
+
+ return bpf_object__find_map_by_name(trace->bpf_obj, name);
+}
+
+static void trace__set_bpf_map_filtered_pids(struct trace *trace)
+{
+ trace->filter_pids.map = trace__find_bpf_map_by_name(trace,
"pids_filtered");
+}
+
+static void trace__set_bpf_map_syscalls(struct trace *trace)
+{
+ trace->syscalls.map = trace__find_bpf_map_by_name(trace, "syscalls");
+ trace->syscalls.prog_array.sys_enter =
trace__find_bpf_map_by_name(trace, "syscalls_sys_enter");
+ trace->syscalls.prog_array.sys_exit =
trace__find_bpf_map_by_name(trace, "syscalls_sys_exit");
+}
+
static struct bpf_program *trace__find_bpf_program_by_title(struct trace
*trace, const char *name)
{
if (trace->bpf_obj == NULL)
@@ -3512,6 +3532,20 @@ static void trace__delete_augmented_syscalls(struct
trace *trace)
trace->bpf_obj = NULL;
}
#else // HAVE_LIBBPF_SUPPORT
+static struct bpf_map *trace__find_bpf_map_by_name(struct trace *trace
__maybe_unused,
+ const char *name
__maybe_unused)
+{
+ return NULL;
+}
+
+static void trace__set_bpf_map_filtered_pids(struct trace *trace
__maybe_unused)
+{
+}
+
+static void trace__set_bpf_map_syscalls(struct trace *trace __maybe_unused)
+{
+}
+
static int trace__set_ev_qualifier_bpf_filter(struct trace *trace
__maybe_unused)
{
return 0;
@@ -4600,26 +4634,6 @@ static int trace__parse_cgroups(const struct option
*opt, const char *str, int u
return 0;
}
-static struct bpf_map *trace__find_bpf_map_by_name(struct trace *trace, const
char *name)
-{
- if (trace->bpf_obj == NULL)
- return NULL;
-
- return bpf_object__find_map_by_name(trace->bpf_obj, name);
-}
-
-static void trace__set_bpf_map_filtered_pids(struct trace *trace)
-{
- trace->filter_pids.map = trace__find_bpf_map_by_name(trace,
"pids_filtered");
-}
-
-static void trace__set_bpf_map_syscalls(struct trace *trace)
-{
- trace->syscalls.map = trace__find_bpf_map_by_name(trace, "syscalls");
- trace->syscalls.prog_array.sys_enter =
trace__find_bpf_map_by_name(trace, "syscalls_sys_enter");
- trace->syscalls.prog_array.sys_exit =
trace__find_bpf_map_by_name(trace, "syscalls_sys_exit");
-}
-
static int trace__config(const char *var, const char *value, void *arg)
{
struct trace *trace = arg;
diff --git a/tools/perf/tests/make b/tools/perf/tests/make
index 5d0c3a9c47a1..c3c59def9f87 100644
--- a/tools/perf/tests/make
+++ b/tools/perf/tests/make
@@ -84,6 +84,7 @@ make_no_libaudit := NO_LIBAUDIT=1
make_no_libbionic := NO_LIBBIONIC=1
make_no_auxtrace := NO_AUXTRACE=1
make_no_libbpf := NO_LIBBPF=1
+make_no_libbpf_DEBUG := NO_LIBBPF=1 DEBUG=1
make_no_libcrypto := NO_LIBCRYPTO=1
make_with_babeltrace:= LIBBABELTRACE=1
make_no_sdt := NO_SDT=1
--
2.25.4
