From: Andres Freund andres@anarazel.de
binutils changed the signature of init_disassemble_info(), which now causes compilation failures for tools/perf/util/annotate.c, e.g. on debian unstable.
Relevant binutils commit:
https://sourceware.org/git/?p=binutils-gdb.git%3Ba=commit%3Bh=60a3da00bd5407...
Wire up the feature test and switch to init_disassemble_info_compat(), which were introduced in prior commits, fixing the compilation failure.
I verified that perf can still disassemble bpf programs by using bpftrace under load, recording a perf trace, and then annotating the bpf "function" with and without the changes. With old binutils there's no change in output before/after this patch. When comparing the output from old binutils (2.35) to new bintuils with the patch (upstream snapshot) there are a few output differences, but they are unrelated to this patch. An example hunk is:
1.15 : 55:mov %rbp,%rdx 0.00 : 58:add $0xfffffffffffffff8,%rdx 0.00 : 5c:xor %ecx,%ecx - 1.03 : 5e:callq 0xffffffffe12aca3c + 1.03 : 5e:call 0xffffffffe12aca3c 0.00 : 63:xor %eax,%eax - 2.18 : 65:leaveq - 2.82 : 66:retq + 2.18 : 65:leave + 2.82 : 66:ret
Signed-off-by: Andres Freund andres@anarazel.de Acked-by: Quentin Monnet quentin@isovalent.com Cc: Alexei Starovoitov ast@kernel.org Cc: Ben Hutchings benh@debian.org Cc: Jiri Olsa jolsa@kernel.org Cc: Sedat Dilek sedat.dilek@gmail.com Cc: bpf@vger.kernel.org Link: http://lore.kernel.org/lkml/20220622181918.ykrs5rsnmx3og4sv@alap3.anarazel.d... Link: https://lore.kernel.org/r/20220801013834.156015-5-andres@anarazel.de Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Anders Roxell anders.roxell@linaro.org --- tools/perf/Makefile.config | 8 ++++++++ tools/perf/util/annotate.c | 7 ++++--- 2 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 3e7706c251e9..55905571f87b 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -281,6 +281,7 @@ FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS) FEATURE_CHECK_LDFLAGS-libaio = -lrt
FEATURE_CHECK_LDFLAGS-disassembler-four-args = -lbfd -lopcodes -ldl +FEATURE_CHECK_LDFLAGS-disassembler-init-styled = -lbfd -lopcodes -ldl
CORE_CFLAGS += -fno-omit-frame-pointer CORE_CFLAGS += -ggdb3 @@ -838,13 +839,16 @@ else ifeq ($(feature-libbfd-liberty), 1) EXTLIBS += -lbfd -lopcodes -liberty FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -ldl + FEATURE_CHECK_LDFLAGS-disassembler-init-styled += -liberty -ldl else ifeq ($(feature-libbfd-liberty-z), 1) EXTLIBS += -lbfd -lopcodes -liberty -lz FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -lz -ldl + FEATURE_CHECK_LDFLAGS-disassembler-init-styled += -liberty -ldl endif endif $(call feature_check,disassembler-four-args) + $(call feature_check,disassembler-init-styled) endif
ifeq ($(feature-libbfd-buildid), 1) @@ -957,6 +961,10 @@ ifeq ($(feature-disassembler-four-args), 1) CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE endif
+ifeq ($(feature-disassembler-init-styled), 1) + CFLAGS += -DDISASM_INIT_STYLED +endif + ifeq (${IS_64_BIT}, 1) ifndef NO_PERF_READ_VDSO32 $(call feature_check,compile-32) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 308189454788..f2d1741b7610 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -1684,6 +1684,7 @@ static int dso__disassemble_filename(struct dso *dso, char *filename, size_t fil #define PACKAGE "perf" #include <bfd.h> #include <dis-asm.h> +#include <tools/dis-asm-compat.h>
static int symbol__disassemble_bpf(struct symbol *sym, struct annotate_args *args) @@ -1726,9 +1727,9 @@ static int symbol__disassemble_bpf(struct symbol *sym, ret = errno; goto out; } - init_disassemble_info(&info, s, - (fprintf_ftype) fprintf); - + init_disassemble_info_compat(&info, s, + (fprintf_ftype) fprintf, + fprintf_styled); info.arch = bfd_get_arch(bfdf); info.mach = bfd_get_mach(bfdf);