perf-linux: clean up code

Fetched as:

    $ wget 'https://github.com/torvalds/linux/compare/00b32625982e0c796f0abb8effcac9c05ef55bd3...600b7b26c07a070d0153daa76b3806c1e52c9e00.patch'

Adds support for binutils-2.39 API change around init_disassemble_info().

--- a/tools/build/Makefile.feature

+++ b/tools/build/Makefile.feature

@@ -70,6 +70,7 @@ FEATURE_TESTS_BASIC :=                  \

         libaio				\

         libzstd				\

         disassembler-four-args		\

+        disassembler-init-styled	\

         file-handle

 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list

--- a/tools/build/feature/Makefile

+++ b/tools/build/feature/Makefile

@@ -18,6 +18,7 @@ FILES=                                          \

          test-libbfd.bin                        \

          test-libbfd-buildid.bin		\

          test-disassembler-four-args.bin        \

+         test-disassembler-init-styled.bin	\

          test-reallocarray.bin			\

          test-libbfd-liberty.bin                \

          test-libbfd-liberty-z.bin              \

@@ -248,6 +249,9 @@ $(OUTPUT)test-libbfd-buildid.bin:

 $(OUTPUT)test-disassembler-four-args.bin:

 	$(BUILD) -DPACKAGE='"perf"' -lbfd -lopcodes

+$(OUTPUT)test-disassembler-init-styled.bin:

+	$(BUILD) -DPACKAGE='"perf"' -lbfd -lopcodes

+

 $(OUTPUT)test-reallocarray.bin:

 	$(BUILD)

--- a/tools/build/feature/test-all.c

+++ b/tools/build/feature/test-all.c

@@ -166,6 +166,10 @@

 # include "test-disassembler-four-args.c"

 #undef main

+#define main main_test_disassembler_init_styled

+# include "test-disassembler-init-styled.c"

+#undef main

+

 #define main main_test_libzstd

 # include "test-libzstd.c"

 #undef main

--- /dev/null

+++ b/tools/build/feature/test-disassembler-init-styled.c

@@ -0,0 +1,13 @@

+// SPDX-License-Identifier: GPL-2.0

+#include <stdio.h>

+#include <dis-asm.h>

+

+int main(void)

+{

+	struct disassemble_info info;

+

+	init_disassemble_info(&info, stdout,

+			      NULL, NULL);

+

+	return 0;

+}

--- a/tools/build/Makefile.feature

+++ b/tools/build/Makefile.feature

@@ -135,8 +135,7 @@ FEATURE_DISPLAY ?=              \

          get_cpuid              \

          bpf			\

          libaio			\

-         libzstd		\

-         disassembler-four-args

+         libzstd

 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.

 # If in the future we need per-feature checks/flags for features not

--- /dev/null

+++ b/tools/include/tools/dis-asm-compat.h

@@ -0,0 +1,55 @@

+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */

+#ifndef _TOOLS_DIS_ASM_COMPAT_H

+#define _TOOLS_DIS_ASM_COMPAT_H

+

+#include <stdio.h>

+#include <dis-asm.h>

+

+/* define types for older binutils version, to centralize ifdef'ery a bit */

+#ifndef DISASM_INIT_STYLED

+enum disassembler_style {DISASSEMBLER_STYLE_NOT_EMPTY};

+typedef int (*fprintf_styled_ftype) (void *, enum disassembler_style, const char*, ...);

+#endif

+

+/*

+ * Trivial fprintf wrapper to be used as the fprintf_styled_func argument to

+ * init_disassemble_info_compat() when normal fprintf suffices.

+ */

+static inline int fprintf_styled(void *out,

+				 enum disassembler_style style,

+				 const char *fmt, ...)

+{

+	va_list args;

+	int r;

+

+	(void)style;

+

+	va_start(args, fmt);

+	r = vfprintf(out, fmt, args);

+	va_end(args);

+

+	return r;

+}

+

+/*

+ * Wrapper for init_disassemble_info() that hides version

+ * differences. Depending on binutils version and architecture either

+ * fprintf_func or fprintf_styled_func will be called.

+ */

+static inline void init_disassemble_info_compat(struct disassemble_info *info,

+						void *stream,

+						fprintf_ftype unstyled_func,

+						fprintf_styled_ftype styled_func)

+{

+#ifdef DISASM_INIT_STYLED

+	init_disassemble_info(info, stream,

+			      unstyled_func,

+			      styled_func);

+#else

+	(void)styled_func;

+	init_disassemble_info(info, stream,

+			      unstyled_func);

+#endif

+}

+

+#endif /* _TOOLS_DIS_ASM_COMPAT_H */

--- a/tools/perf/Makefile.config

+++ b/tools/perf/Makefile.config

@@ -298,6 +298,7 @@ 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

@@ -924,13 +925,16 @@ ifndef NO_LIBBFD

     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 -lz -ldl

       endif

     endif

     $(call feature_check,disassembler-four-args)

+    $(call feature_check,disassembler-init-styled)

   endif

   ifeq ($(feature-libbfd-buildid), 1)

@@ -1044,6 +1048,10 @@ 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)

--- a/tools/perf/util/annotate.c

+++ b/tools/perf/util/annotate.c

@@ -1720,6 +1720,7 @@ static int dso__disassemble_filename(struct dso *dso, char *filename, size_t fil

 #include <bpf/btf.h>

 #include <bpf/libbpf.h>

 #include <linux/btf.h>

+#include <tools/dis-asm-compat.h>

 static int symbol__disassemble_bpf(struct symbol *sym,

 				   struct annotate_args *args)

@@ -1762,9 +1763,9 @@ 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);

--- a/tools/bpf/Makefile

+++ b/tools/bpf/Makefile

@@ -34,7 +34,7 @@ else

 endif

 FEATURE_USER = .bpf

-FEATURE_TESTS = libbfd disassembler-four-args

+FEATURE_TESTS = libbfd disassembler-four-args disassembler-init-styled

 FEATURE_DISPLAY = libbfd disassembler-four-args

 check_feat := 1

@@ -56,6 +56,9 @@ endif

 ifeq ($(feature-disassembler-four-args), 1)

 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE

 endif

+ifeq ($(feature-disassembler-init-styled), 1)

+CFLAGS += -DDISASM_INIT_STYLED

+endif

 $(OUTPUT)%.yacc.c: $(srctree)/tools/bpf/%.y

 	$(QUIET_BISON)$(YACC) -o $@ -d $<

--- a/tools/bpf/bpf_jit_disasm.c

+++ b/tools/bpf/bpf_jit_disasm.c

@@ -28,6 +28,7 @@

 #include <sys/types.h>

 #include <sys/stat.h>

 #include <limits.h>

+#include <tools/dis-asm-compat.h>

 #define CMD_ACTION_SIZE_BUFFER		10

 #define CMD_ACTION_READ_ALL		3

@@ -64,7 +65,9 @@ static void get_asm_insns(uint8_t *image, size_t len, int opcodes)

 	assert(bfdf);

 	assert(bfd_check_format(bfdf, bfd_object));

-	init_disassemble_info(&info, stdout, (fprintf_ftype) fprintf);

+	init_disassemble_info_compat(&info, stdout,

+				     (fprintf_ftype) fprintf,

+				     fprintf_styled);

 	info.arch = bfd_get_arch(bfdf);

 	info.mach = bfd_get_mach(bfdf);

 	info.buffer = image;

--- a/tools/bpf/Makefile

+++ b/tools/bpf/Makefile

@@ -35,7 +35,7 @@ endif

 FEATURE_USER = .bpf

 FEATURE_TESTS = libbfd disassembler-four-args disassembler-init-styled

-FEATURE_DISPLAY = libbfd disassembler-four-args

+FEATURE_DISPLAY = libbfd

 check_feat := 1

 NON_CHECK_FEAT_TARGETS := clean bpftool_clean runqslower_clean resolve_btfids_clean

--- a/tools/bpf/bpftool/Makefile

+++ b/tools/bpf/bpftool/Makefile

@@ -93,7 +93,7 @@ INSTALL ?= install

 RM ?= rm -f

 FEATURE_USER = .bpftool

-FEATURE_TESTS = libbfd disassembler-four-args zlib libcap \

+FEATURE_TESTS = libbfd disassembler-four-args disassembler-init-styled zlib libcap \

 	clang-bpf-co-re

 FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \

 	clang-bpf-co-re

@@ -117,6 +117,9 @@ endif

 ifeq ($(feature-disassembler-four-args), 1)

 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE

 endif

+ifeq ($(feature-disassembler-init-styled), 1)

+    CFLAGS += -DDISASM_INIT_STYLED

+endif

 LIBS = $(LIBBPF) -lelf -lz

 LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf -lz

--- a/tools/bpf/bpftool/jit_disasm.c

+++ b/tools/bpf/bpftool/jit_disasm.c

@@ -24,6 +24,7 @@

 #include <sys/stat.h>

 #include <limits.h>

 #include <bpf/libbpf.h>

+#include <tools/dis-asm-compat.h>

 #include "json_writer.h"

 #include "main.h"

@@ -39,15 +40,12 @@ static void get_exec_path(char *tpath, size_t size)

 }

 static int oper_count;

-static int fprintf_json(void *out, const char *fmt, ...)

+static int printf_json(void *out, const char *fmt, va_list ap)

 {

-	va_list ap;

 	char *s;

 	int err;

-	va_start(ap, fmt);

 	err = vasprintf(&s, fmt, ap);

-	va_end(ap);

 	if (err < 0)

 		return -1;

@@ -73,6 +71,32 @@ static int fprintf_json(void *out, const char *fmt, ...)

 	return 0;

 }

+static int fprintf_json(void *out, const char *fmt, ...)

+{

+	va_list ap;

+	int r;

+

+	va_start(ap, fmt);

+	r = printf_json(out, fmt, ap);

+	va_end(ap);

+

+	return r;

+}

+

+static int fprintf_json_styled(void *out,

+			       enum disassembler_style style __maybe_unused,

+			       const char *fmt, ...)

+{

+	va_list ap;

+	int r;

+

+	va_start(ap, fmt);

+	r = printf_json(out, fmt, ap);

+	va_end(ap);

+

+	return r;

+}

+

 void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,

 		       const char *arch, const char *disassembler_options,

 		       const struct btf *btf,

@@ -99,11 +123,13 @@ void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,

 	assert(bfd_check_format(bfdf, bfd_object));

 	if (json_output)

-		init_disassemble_info(&info, stdout,

-				      (fprintf_ftype) fprintf_json);

+		init_disassemble_info_compat(&info, stdout,

+					     (fprintf_ftype) fprintf_json,

+					     fprintf_json_styled);

 	else

-		init_disassemble_info(&info, stdout,

-				      (fprintf_ftype) fprintf);

+		init_disassemble_info_compat(&info, stdout,

+					     (fprintf_ftype) fprintf,

+					     fprintf_styled);

 	/* Update architecture info for offload. */

 	if (arch) {

, fetchurl

, kernel

, elfutils

, python2

, python3

, python3Packages

, perl

, newt

, slang

  inherit (kernel) src;

  patches = lib.optionals (lib.versionAtLeast kernel.version "5.19" && lib.versionOlder kernel.version "5.20") [

    # binutils-2.39 support around init_disassemble_info()

    # API change.

    # Will be included in 5.20.

    ./5.19-binutils-2.39-support.patch

  ];

  postPatch = ''

    patchShebangs scripts tools/perf/pmu-events/jevents.py

  '' + lib.optionalString (lib.versionAtLeast kernel.version "5.8") ''

    substituteInPlace tools/perf/scripts/python/flamegraph.py \

      --replace "/usr/share/d3-flame-graph/d3-flamegraph-base.html" \

      "${d3-flame-graph-templates}/share/d3-flame-graph/d3-flamegraph-base.html"

  '';

    # Linux scripts

    patchShebangs scripts

  preConfigure = ''

    cd tools/perf

    substituteInPlace Makefile \

      --replace /usr/include/elfutils $elfutils/include/elfutils

    for x in util/build-id.c util/dso.c; do

      substituteInPlace $x --replace /usr/lib/debug /run/current-system/sw/lib/debug

    done

    if [ -f bash_completion ]; then

      sed -i 's,^have perf,_have perf,' bash_completion

    fi

  '' + lib.optionalString (lib.versionAtLeast kernel.version "5.8") ''

    substituteInPlace scripts/python/flamegraph.py \

      --replace "/usr/share/d3-flame-graph/d3-flamegraph-base.html" \

      "${d3-flame-graph-templates}/share/d3-flame-graph/d3-flamegraph-base.html"

  '' + lib.optionalString (lib.versionAtLeast kernel.version "6.0") ''

    patchShebangs pmu-events/jevents.py

  '';

  makeFlags = [ "prefix=$(out)" "WERROR=0" ] ++ kernel.makeFlags;

  then [ libbfd libopcodes ]

  else [ libbfd_2_38 libopcodes_2_38 ])

  ++ lib.optional withGtk gtk2

  ++ (if (lib.versionAtLeast kernel.version "4.19") then [ python3 ] else [ python2 ])

  ++ lib.optional withZstd zstd

  ++ lib.optional withLibcap libcap

  ++ lib.optional (lib.versionAtLeast kernel.version "6.0") python3Packages.setuptools;

  ++ lib.optional (lib.versionAtLeast kernel.version "6.0") python3.pkgs.setuptools;

  NIX_CFLAGS_COMPILE = toString [

    "-Wno-error=cpp"

  ];

  doCheck = false; # requires "sparse"

  doInstallCheck = false; # same

  separateDebugInfo = true;

  installFlags = [ "install" "install-man" "ASCIIDOC8=1" "prefix=$(out)" ];

  # TODO: Add completions based on perf-completion.sh

  postInstall = ''

    # Same as perf. Remove.

    rm -f $out/bin/trace

  '';

  separateDebugInfo = true;

  preFixup = ''

    # Pull in 'objdump' into PATH to make annotations work.

    # The embeded Python interpreter will search PATH to calculate the Python path configuration(Should be fixed by upstream).

    # Add python.interpreter to PATH for now.

    wrapProgram $out/bin/perf \

      --prefix PATH : ${lib.makeBinPath ([ binutils-unwrapped ] ++ (if (lib.versionAtLeast kernel.version "4.19") then [ python3 ] else [ python2 ]))}

      --prefix PATH : ${lib.makeBinPath [ binutils-unwrapped python3 ]}

  '';

  meta = with lib; {