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perf trace: Fix compilation error for make NO_LIBBPF=1 DEBUG=1 

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

Move trace__find_bpf_map_by_name calls under HAVE_LIBBPF_SUPPORT ifdef
and add make test for this.

Committer notes:

Add missing:

  run += make_no_libbpf_DEBUG

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200518141027.3765877-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2020-05-18 16:10:27 +02:00 committed by Arnaldo Carvalho de Melo
parent 6d1f916265
commit beb6420300
2 changed files with 36 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
tools/perf/builtin-trace.c
View File

@ -3174,6 +3174,26 @@ out_enomem:
}
#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;

2
tools/perf/tests/make
View File

@ -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
@ -144,6 +145,7 @@ run += make_no_libaudit
run += make_no_libbionic
run += make_no_auxtrace
run += make_no_libbpf
run += make_no_libbpf_DEBUG
run += make_with_babeltrace
run += make_with_clangllvm
run += make_help