From 0c100b7dd2b30e75b799d806df4ef899fd98e1ea Mon Sep 17 00:00:00 2001
From: V3n3RiX <venerix@koprulu.sector>
Date: Sat, 16 Apr 2022 13:07:24 +0100
Subject: gentoo resync : 16.04.2022

---
 dev-util/perf/Manifest                      |   8 +-
 dev-util/perf/files/perf-5.17.1-clang.patch |  61 +++++++
 dev-util/perf/perf-5.12-r1.ebuild           | 267 ----------------------------
 dev-util/perf/perf-5.15-r1.ebuild           |   2 +-
 dev-util/perf/perf-5.17.1.ebuild            | 264 +++++++++++++++++++++++++++
 5 files changed, 331 insertions(+), 271 deletions(-)
 create mode 100644 dev-util/perf/files/perf-5.17.1-clang.patch
 delete mode 100644 dev-util/perf/perf-5.12-r1.ebuild
 create mode 100644 dev-util/perf/perf-5.17.1.ebuild

(limited to 'dev-util/perf')

diff --git a/dev-util/perf/Manifest b/dev-util/perf/Manifest
index 4c9b658b549d..35b8c02141ce 100644
--- a/dev-util/perf/Manifest
+++ b/dev-util/perf/Manifest
@@ -1,8 +1,10 @@
 AUX perf-5.15-clang.patch 8700 BLAKE2B cfe9ab41fc2ac49d2d7cbdfe2a4b009dc1c0dad93fb1a54e5ed541208afccb2f55ae420db6321ac360c5b2f6351b04f458fff21abd581d4da5e3296608c3b3da SHA512 49a88809100bdd63241064a8b19e866ba2d91dc78dd279c979982cbb96e91061f6a93ded1a596364f1d7b3410ed10811ae21c23b046370654c3f32c9d0d468cc
-DIST linux-5.12.tar.xz 118112412 BLAKE2B 842d921b9a73d2aaade763dbd2ec67bdfe0275baa6d628b775f5c87574ad7dc86f0419afcd48c10c1235f4bffa16084243f2cf4556e6afcd391e975fe8ba530b SHA512 be03b6fee1d1ea8087b09874d27c0a602c0b04fd90ad38b975bd2c8455a07e83c29b56814aaf1389e82305fae0e4c2d1701075a7f0a7295dd28149f967ec5b3d
+AUX perf-5.17.1-clang.patch 2350 BLAKE2B 5010e3f90feafdd340b49000f2140857e8511a771acafa017224242f1a7361abd9a60a698923288dc13d53d8346985e40a069469dc1ca346b5b7ae058622322d SHA512 03086f968bdd31a9545a45c92d461f1ad9bc62d0fbd6de8b726925f422e436ab71002cafeadb7540bba0be553b426fe5e5b69e895f974497c6777354987ad375
 DIST linux-5.15.tar.xz 121913744 BLAKE2B 3921274b23f7938abdf3ed9334534b4581e13d7484303d3a5280eddb038999aaa8b836666a487472d9c4a219af0f06b9fecccaf348fb5510ab8762f4ef4b7e83 SHA512 d25ad40b5bcd6a4c6042fd0fd84e196e7a58024734c3e9a484fd0d5d54a0c1d87db8a3c784eff55e43b6f021709dc685eb0efa18d2aec327e4f88a79f405705a
+DIST linux-5.17.tar.xz 128399340 BLAKE2B 82dc4a45cc25c781ac67aa6ed1e4c369544154960f41c4634d47621f381159687a227054976d078524cda28884d395a15f7542fe44ca74ce98ca6ff54a81d6d0 SHA512 89f0a7ca69d20a539d4b612a7028a30a5e98b402e4b6b88516f14237e5da4b626d7929eab8b40fccc90766e8f3bae87e9858a19077ffad20d8204acf18794f5b
 DIST linux-5.8.tar.xz 114459324 BLAKE2B 7bd97f8fa4527840754434414c07283e89731dc8ebb1e95fa5bc1469a60af1122582c0d3b6e262e77882f023190068df3537bd8b65964b3caa820bb2c8e579c7 SHA512 45a53ecf351096ef6e98242cca4228b8da9b9139ecc6963695791ea6fb7a9484a4e1c19dcca7ce7cbfdfa49de0451b70973bb078f12bdae9cbaddbc3f8092556
-EBUILD perf-5.12-r1.ebuild 7445 BLAKE2B 5b9b2f1ba4ae9a04dcc62598f52874cae7a2808cdaffa0e7985d9f22caf8c1a7a3ccce75f193e79b607ec8c7740bf2ef30b3a9120ed604905106dac56fc8c1ee SHA512 ac9ac27d9de771928a43bdd199a90e6467548f2cccf6e3caa31e13cd2e8de21b5087bc048506edc4e5b0159810902f35413d2c5c5e3089df04b6b382d57f7cda
-EBUILD perf-5.15-r1.ebuild 7384 BLAKE2B 6dbab0d37c3e9058a8382b54d13a54e5c393fe9caae8d9b86e9d1af2e816442b4334ab53a31fca8b0e5df9baaf01766f19bc3f65f70f9dc2d492db4986a18f4c SHA512 33262ef0d7849178cd7e0c017d1ae724f16c2b4600cb52bd2e49f10e771fe15d28dd9a414aeed782cc8b590267ee72b4ef62121ff18e9399d3aad9cfba4e8693
+DIST patch-5.17.1.xz 15244 BLAKE2B f340b8a103754122153dd381fe210b18ba37b7262dae4fc7a1f99c5a62868c9bdb178e83865b35f00b82bd2d67ae127c440515d1740093825f7ec7fa4c4a490d SHA512 fb9a28ce7c68daeca82586e7631dc0be00a1a8393b4cef4c659fc1f9dac6e1f941bd60671c0350d1dea9cb035f56d627f64a394a9acb00b2b5dea8a1d44c065f
+EBUILD perf-5.15-r1.ebuild 7377 BLAKE2B bf92d4eb770c0914cf62a241d3f1d77c6c501650924a4c40badd7e132e94b88174453aeeda60ff2b9f11dafb3ea3c00342bced52075182ecaf240e4271a1cb4d SHA512 de08779d40cf32ba70654e88a7e06b829fe462247e6f0c7c8d9c626b997beb2366c048434e22955dfedb11637f791538f09a5d5f38b00b7fe9e807f1a6382599
+EBUILD perf-5.17.1.ebuild 7333 BLAKE2B d875f3553e4b54b4af9a5f56a0edd3ff7932763415447bcd08c0fa96f51309e93c7fd2ad725f68a3850acb9cd3cbeb9470ec4634bedaed3e228af5dc20c04a78 SHA512 d0ff31084203c1c1ee9b1ffe8d950f3a0b6d8682413f5537c289e657eed5545b23838a2dc96e4dc59558093f9e443b3b88c18e44a318ceddbfefcf4ecd09e07f
 EBUILD perf-5.8.ebuild 6757 BLAKE2B 490ff9045ea6dae5b14aca9e91d322d0e6d7879f2efd4bf9a4f2e919569b752e9933ba8be586f7615e81a04be28ffb5a5ca832a7491df13cfa6e67ddaf8ad86a SHA512 da92c2600d4033fedefad6e1f73a56261f2bb3b38b3a0c0fb195347d20509b8f3797386a75f52faab5981622e85db9e38cae805fcb8a86a1d2ce6916e95f5b76
 MISC metadata.xml 1732 BLAKE2B e14f57991fca666b493d129c62f779b9889e6afbd56e32dbbdcdef223b3a5c9060028613c1e6f69dfa03b35fa34570150d03f823479dff3bb9dacaebad7fc1d4 SHA512 cdd9adc6c226b902520f5f55f93217319733295b2696d73be45652e478a7c0354b24b676eb5b3b00824df1c09b80a6658282df0104101668ef4ee7b24190b24f
diff --git a/dev-util/perf/files/perf-5.17.1-clang.patch b/dev-util/perf/files/perf-5.17.1-clang.patch
new file mode 100644
index 000000000000..73d4506146c0
--- /dev/null
+++ b/dev-util/perf/files/perf-5.17.1-clang.patch
@@ -0,0 +1,61 @@
+
+Fix building against LLVM/Clang with monolithic libraries and
+adjust header includes for Clang >= 14.
+
+--- a/tools/build/feature/Makefile
++++ b/tools/build/feature/Makefile
+@@ -299,7 +299,7 @@ $(OUTPUT)test-llvm.bin:
+ 	$(BUILDXX) -std=gnu++14 				\
+ 		-I$(shell $(LLVM_CONFIG) --includedir) 		\
+ 		-L$(shell $(LLVM_CONFIG) --libdir)		\
+-		$(shell $(LLVM_CONFIG) --libs Core BPF)		\
++		$(shell $(LLVM_CONFIG) --libs)			\
+ 		$(shell $(LLVM_CONFIG) --system-libs)		\
+ 		> $(@:.bin=.make.output) 2>&1
+ 
+@@ -312,10 +312,7 @@ $(OUTPUT)test-clang.bin:
+ 	$(BUILDXX) -std=gnu++14					\
+ 		-I$(shell $(LLVM_CONFIG) --includedir) 		\
+ 		-L$(shell $(LLVM_CONFIG) --libdir)		\
+-		-Wl,--start-group -lclangBasic -lclangDriver	\
+-		  -lclangFrontend -lclangEdit -lclangLex	\
+-		  -lclangAST -Wl,--end-group 			\
+-		$(shell $(LLVM_CONFIG) --libs Core option)	\
++		-lclang-cpp $(shell $(LLVM_CONFIG) --libs)	\
+ 		$(shell $(LLVM_CONFIG) --system-libs)		\
+ 		> $(@:.bin=.make.output) 2>&1
+ 
+--- a/tools/perf/Makefile.perf
++++ b/tools/perf/Makefile.perf
+@@ -417,14 +417,11 @@ EXTLIBS := $(call filter-out,$(EXCLUDE_EXTLIBS),$(EXTLIBS))
+ LIBS = -Wl,--whole-archive $(PERFLIBS) $(EXTRA_PERFLIBS) -Wl,--no-whole-archive -Wl,--start-group $(EXTLIBS) -Wl,--end-group
+ 
+ ifeq ($(USE_CLANG), 1)
+-  CLANGLIBS_LIST = AST Basic CodeGen Driver Frontend Lex Tooling Edit Sema Analysis Parse Serialization
+-  CLANGLIBS_NOEXT_LIST = $(foreach l,$(CLANGLIBS_LIST),$(shell $(LLVM_CONFIG) --libdir)/libclang$(l))
+-  LIBCLANG = $(foreach l,$(CLANGLIBS_NOEXT_LIST),$(wildcard $(l).a $(l).so))
+-  LIBS += -Wl,--start-group $(LIBCLANG) -Wl,--end-group
++  LIBS += -lclang-cpp
+ endif
+ 
+ ifeq ($(USE_LLVM), 1)
+-  LIBLLVM = $(shell $(LLVM_CONFIG) --libs all) $(shell $(LLVM_CONFIG) --system-libs)
++  LIBLLVM = $(shell $(LLVM_CONFIG) --libs) $(shell $(LLVM_CONFIG) --system-libs)
+   LIBS += -L$(shell $(LLVM_CONFIG) --libdir) $(LIBLLVM)
+ endif
+ 
+--- a/tools/perf/util/c++/clang.cpp
++++ b/tools/perf/util/c++/clang.cpp
+@@ -20,7 +20,11 @@
+ #include "llvm/Option/Option.h"
+ #include "llvm/Support/FileSystem.h"
+ #include "llvm/Support/ManagedStatic.h"
++#if CLANG_VERSION_MAJOR >= 14
++#include "llvm/MC/TargetRegistry.h"
++#else
+ #include "llvm/Support/TargetRegistry.h"
++#endif
+ #include "llvm/Support/TargetSelect.h"
+ #include "llvm/Target/TargetMachine.h"
+ #include "llvm/Target/TargetOptions.h"
+
diff --git a/dev-util/perf/perf-5.12-r1.ebuild b/dev-util/perf/perf-5.12-r1.ebuild
deleted file mode 100644
index 3d3079203e9d..000000000000
--- a/dev-util/perf/perf-5.12-r1.ebuild
+++ /dev/null
@@ -1,267 +0,0 @@
-# Copyright 1999-2021 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=7
-
-PYTHON_COMPAT=( python3_{7..10} )
-inherit bash-completion-r1 estack llvm toolchain-funcs prefix python-r1 linux-info
-
-DESCRIPTION="Userland tools for Linux Performance Counters"
-HOMEPAGE="https://perf.wiki.kernel.org/"
-
-LINUX_V="${PV:0:1}.x"
-if [[ ${PV} == *_rc* ]] ; then
-	LINUX_VER=$(ver_cut 1-2).$(($(ver_cut 3)-1))
-	PATCH_VERSION=$(ver_cut 1-3)
-	LINUX_PATCH=patch-${PV//_/-}.xz
-	SRC_URI="https://www.kernel.org/pub/linux/kernel/v${LINUX_V}/testing/${LINUX_PATCH}
-		https://www.kernel.org/pub/linux/kernel/v${LINUX_V}/testing/v${PATCH_VERSION}/${LINUX_PATCH}"
-elif [[ ${PV} == *.*.* ]] ; then
-	# stable-release series
-	LINUX_VER=$(ver_cut 1-2)
-	LINUX_PATCH=patch-${PV}.xz
-	SRC_URI="https://www.kernel.org/pub/linux/kernel/v${LINUX_V}/${LINUX_PATCH}"
-else
-	LINUX_VER=${PV}
-	SRC_URI=""
-fi
-
-LINUX_SOURCES="linux-${LINUX_VER}.tar.xz"
-SRC_URI+=" https://www.kernel.org/pub/linux/kernel/v${LINUX_V}/${LINUX_SOURCES}"
-
-LICENSE="GPL-2"
-SLOT="0"
-KEYWORDS="~amd64 ~arm ~arm64 ~mips ~ppc ~ppc64 ~riscv ~x86 ~amd64-linux ~x86-linux"
-IUSE="audit babeltrace clang crypt debug +doc gtk java libpfm lzma numa perl python slang systemtap unwind zlib zstd"
-
-REQUIRED_USE="${PYTHON_REQUIRED_USE}"
-
-BDEPEND="
-	${LINUX_PATCH+dev-util/patchutils}
-	sys-devel/bison
-	sys-devel/flex
-	virtual/pkgconfig
-	doc? (
-		app-text/asciidoc
-		app-text/sgml-common
-		app-text/xmlto
-		sys-process/time
-	)
-	${PYTHON_DEPS}
-"
-
-RDEPEND="audit? ( sys-process/audit )
-	babeltrace? ( dev-util/babeltrace )
-	crypt? ( virtual/libcrypt:= )
-	clang? (
-		<sys-devel/clang-10:*
-		<sys-devel/llvm-10:*
-	)
-	gtk? ( x11-libs/gtk+:2 )
-	java? ( virtual/jre:* )
-	libpfm? ( dev-libs/libpfm )
-	lzma? ( app-arch/xz-utils )
-	numa? ( sys-process/numactl )
-	perl? ( dev-lang/perl:= )
-	python? ( ${PYTHON_DEPS} )
-	slang? ( sys-libs/slang )
-	systemtap? ( dev-util/systemtap )
-	unwind? ( sys-libs/libunwind )
-	zlib? ( sys-libs/zlib )
-	zstd? ( app-arch/zstd )
-	dev-libs/elfutils
-	sys-libs/binutils-libs:="
-
-DEPEND="${RDEPEND}
-	>=sys-kernel/linux-headers-5.10
-	java? ( virtual/jdk )
-"
-
-S_K="${WORKDIR}/linux-${LINUX_VER}"
-S="${S_K}/tools/perf"
-
-CONFIG_CHECK="~PERF_EVENTS ~KALLSYMS"
-
-QA_FLAGS_IGNORED=(
-	usr/bin/perf-read-vdso32 # not linked with anything except for libc
-	usr/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so # not installed
-)
-
-pkg_pretend() {
-	if ! use doc ; then
-		ewarn "Without the doc USE flag you won't get any documentation nor man pages."
-		ewarn "And without man pages, you won't get any --help output for perf and its"
-		ewarn "sub-tools."
-	fi
-}
-
-pkg_setup() {
-	use clang && LLVM_MAX_SLOT=9 llvm_pkg_setup
-	# We enable python unconditionally as libbpf always generates
-	# API headers using python script
-	python_setup
-}
-
-# src_unpack and src_prepare are copied to dev-util/bpftool since
-# it's building from the same tarball, please keep it in sync with bpftool
-src_unpack() {
-	local paths=(
-		tools/arch tools/build tools/include tools/lib tools/perf tools/scripts
-		scripts include lib "arch/*/lib"
-	)
-
-	# We expect the tar implementation to support the -j option (both
-	# GNU tar and libarchive's tar support that).
-	echo ">>> Unpacking ${LINUX_SOURCES} (${paths[*]}) to ${PWD}"
-	tar --wildcards -xpf "${DISTDIR}"/${LINUX_SOURCES} \
-		"${paths[@]/#/linux-${LINUX_VER}/}" || die
-
-	if [[ -n ${LINUX_PATCH} ]] ; then
-		eshopts_push -o noglob
-		ebegin "Filtering partial source patch"
-		filterdiff -p1 ${paths[@]/#/-i } -z "${DISTDIR}"/${LINUX_PATCH} \
-			> ${P}.patch
-		eend $? || die "filterdiff failed"
-		eshopts_pop
-	fi
-
-	local a
-	for a in ${A}; do
-		[[ ${a} == ${LINUX_SOURCES} ]] && continue
-		[[ ${a} == ${LINUX_PATCH} ]] && continue
-		unpack ${a}
-	done
-}
-
-src_prepare() {
-	default
-	if [[ -n ${LINUX_PATCH} ]] ; then
-		pushd "${S_K}" >/dev/null || die
-		eapply "${WORKDIR}"/${P}.patch
-		popd || die
-	fi
-
-	# Drop some upstream too-developer-oriented flags and fix the
-	# Makefile in general
-	sed -i \
-		-e "s:\$(sysconfdir_SQ)/bash_completion.d:$(get_bashcompdir):" \
-		"${S}"/Makefile.perf || die
-	# A few places still use -Werror w/out $(WERROR) protection.
-	sed -i -e 's:-Werror::' \
-		"${S}"/Makefile.perf "${S_K}"/tools/lib/bpf/Makefile || die
-
-	# Avoid the call to make kernelversion
-	sed -i -e '/PERF-VERSION-GEN/d' Makefile.perf || die
-	echo "#define PERF_VERSION \"${PV}\"" > PERF-VERSION-FILE
-
-	# The code likes to compile local assembly files which lack ELF markings.
-	find -name '*.S' -exec sed -i '$a.section .note.GNU-stack,"",%progbits' {} +
-
-	# Fix shebang to use python from prefix
-	if [[ -n "${EPREFIX}" ]]; then
-		hprefixify ${S_K}/scripts/bpf_helpers_doc.py
-	fi
-}
-
-puse() { usex $1 "" no; }
-perf_make() {
-	# The arch parsing is a bit funky.  The perf tools package is integrated
-	# into the kernel, so it wants an ARCH that looks like the kernel arch,
-	# but it also wants to know about the split value -- i386/x86_64 vs just
-	# x86.  We can get that by telling the func to use an older linux version.
-	# It's kind of a hack, but not that bad ...
-
-	# LIBDIR sets a search path of perf-gtk.so. Bug 515954
-
-	local arch=$(tc-arch-kernel)
-	local java_dir
-	use java && java_dir="${EPREFIX}/etc/java-config-2/current-system-vm"
-	# FIXME: NO_CORESIGHT
-	emake V=1 VF=1 \
-		HOSTCC="$(tc-getBUILD_CC)" HOSTLD="$(tc-getBUILD_LD)" \
-		CC="$(tc-getCC)" CXX="$(tc-getCXX)" AR="$(tc-getAR)" LD="$(tc-getLD)" NM="$(tc-getNM)" \
-		PKG_CONFIG="$(tc-getPKG_CONFIG)" \
-		prefix="${EPREFIX}/usr" bindir_relative="bin" \
-		tipdir="share/doc/${PF}" \
-		EXTRA_CFLAGS="${CFLAGS}" \
-		EXTRA_LDFLAGS="${LDFLAGS}" \
-		ARCH="${arch}" \
-		JDIR="${java_dir}" \
-		LIBCLANGLLVM=$(usex clang 1 "") \
-		LIBPFM4=$(usex libpfm 1 "") \
-		NO_AUXTRACE="" \
-		NO_BACKTRACE="" \
-		NO_CORESIGHT=1 \
-		NO_DEMANGLE= \
-		GTK2=$(usex gtk 1 "") \
-		feature-gtk2-infobar=$(usex gtk 1 "") \
-		NO_JVMTI=$(puse java) \
-		NO_LIBAUDIT=$(puse audit) \
-		NO_LIBBABELTRACE=$(puse babeltrace) \
-		NO_LIBBIONIC=1 \
-		NO_LIBBPF= \
-		NO_LIBCRYPTO=$(puse crypt) \
-		NO_LIBDW_DWARF_UNWIND= \
-		NO_LIBELF= \
-		NO_LIBNUMA=$(puse numa) \
-		NO_LIBPERL=$(puse perl) \
-		NO_LIBPYTHON=$(puse python) \
-		NO_LIBUNWIND=$(puse unwind) \
-		NO_LIBZSTD=$(puse zstd) \
-		NO_SDT=$(puse systemtap) \
-		NO_SLANG=$(puse slang) \
-		NO_LZMA=$(puse lzma) \
-		NO_ZLIB=$(puse zlib) \
-		WERROR=0 \
-		LIBDIR="/usr/libexec/perf-core" \
-		libdir="${EPREFIX}/usr/$(get_libdir)" \
-		plugindir="${EPREFIX}/usr/$(get_libdir)/perf/plugins" \
-		"$@"
-}
-
-src_compile() {
-	# test-clang.bin not build with g++
-	if use clang; then
-		pushd "${S_K}/tools/build/feature/" || die
-		make V=1 CXX=${CHOST}-clang++ test-clang.bin || die
-		popd
-	fi
-	perf_make -f Makefile.perf
-	use doc && perf_make -C Documentation man
-}
-
-src_test() {
-	:
-}
-
-src_install() {
-	_install_python_ext() {
-		perf_make -f Makefile.perf install-python_ext DESTDIR="${D}"
-	}
-
-	perf_make -f Makefile.perf install DESTDIR="${D}"
-
-	if use python; then
-		python_foreach_impl _install_python_ext
-	fi
-
-	if use gtk; then
-		local libdir
-		libdir="$(get_libdir)"
-		# on some arches it ends up in lib even on 64bit, ppc64 for instance.
-		[[ -f "${ED}"/usr/lib/libperf-gtk.so ]] && libdir="lib"
-		mv "${ED}"/usr/${libdir}/libperf-gtk.so \
-			"${ED}"/usr/libexec/perf-core || die
-	fi
-
-	dodoc CREDITS
-
-	dodoc *txt Documentation/*.txt
-
-	# perf needs this decompressed to print out tips for users
-	docompress -x /usr/share/doc/${PF}/tips.txt
-
-	if use doc ; then
-		doman Documentation/*.1
-	fi
-}
diff --git a/dev-util/perf/perf-5.15-r1.ebuild b/dev-util/perf/perf-5.15-r1.ebuild
index d3d3cab43544..e84ed5803f1a 100644
--- a/dev-util/perf/perf-5.15-r1.ebuild
+++ b/dev-util/perf/perf-5.15-r1.ebuild
@@ -4,7 +4,7 @@
 EAPI=7
 
 PYTHON_COMPAT=( python3_{7..10} )
-inherit bash-completion-r1 estack llvm toolchain-funcs prefix python-r1 linux-info
+inherit bash-completion-r1 estack llvm toolchain-funcs python-r1 linux-info
 
 DESCRIPTION="Userland tools for Linux Performance Counters"
 HOMEPAGE="https://perf.wiki.kernel.org/"
diff --git a/dev-util/perf/perf-5.17.1.ebuild b/dev-util/perf/perf-5.17.1.ebuild
new file mode 100644
index 000000000000..a2e565d93fcb
--- /dev/null
+++ b/dev-util/perf/perf-5.17.1.ebuild
@@ -0,0 +1,264 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{8..10} )
+inherit bash-completion-r1 estack llvm toolchain-funcs python-r1 linux-info
+
+DESCRIPTION="Userland tools for Linux Performance Counters"
+HOMEPAGE="https://perf.wiki.kernel.org/"
+
+LINUX_V="${PV:0:1}.x"
+if [[ ${PV} == *_rc* ]] ; then
+	LINUX_VER=$(ver_cut 1-2).$(($(ver_cut 3)-1))
+	PATCH_VERSION=$(ver_cut 1-3)
+	LINUX_PATCH=patch-${PV//_/-}.xz
+	SRC_URI="https://www.kernel.org/pub/linux/kernel/v${LINUX_V}/testing/${LINUX_PATCH}
+		https://www.kernel.org/pub/linux/kernel/v${LINUX_V}/testing/v${PATCH_VERSION}/${LINUX_PATCH}"
+elif [[ ${PV} == *.*.* ]] ; then
+	# stable-release series
+	LINUX_VER=$(ver_cut 1-2)
+	LINUX_PATCH=patch-${PV}.xz
+	SRC_URI="https://www.kernel.org/pub/linux/kernel/v${LINUX_V}/${LINUX_PATCH}"
+else
+	LINUX_VER=${PV}
+	SRC_URI=""
+fi
+
+LINUX_SOURCES="linux-${LINUX_VER}.tar.xz"
+SRC_URI+=" https://www.kernel.org/pub/linux/kernel/v${LINUX_V}/${LINUX_SOURCES}"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~mips ~ppc ~ppc64 ~riscv ~x86 ~amd64-linux ~x86-linux"
+IUSE="audit babeltrace clang crypt debug +doc gtk java libpfm lzma numa perl python slang systemtap unwind zlib zstd"
+
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+BDEPEND="
+	${LINUX_PATCH+dev-util/patchutils}
+	sys-devel/bison
+	sys-devel/flex
+	virtual/pkgconfig
+	doc? (
+		app-text/asciidoc
+		app-text/sgml-common
+		app-text/xmlto
+		sys-process/time
+	)
+	${PYTHON_DEPS}
+"
+
+RDEPEND="audit? ( sys-process/audit )
+	babeltrace? ( dev-util/babeltrace )
+	crypt? ( virtual/libcrypt:= )
+	clang? (
+		sys-devel/clang:=
+		sys-devel/llvm:=
+	)
+	gtk? ( x11-libs/gtk+:2 )
+	java? ( virtual/jre:* )
+	libpfm? ( dev-libs/libpfm )
+	lzma? ( app-arch/xz-utils )
+	numa? ( sys-process/numactl )
+	perl? ( dev-lang/perl:= )
+	python? ( ${PYTHON_DEPS} )
+	slang? ( sys-libs/slang )
+	systemtap? ( dev-util/systemtap )
+	unwind? ( sys-libs/libunwind )
+	zlib? ( sys-libs/zlib )
+	zstd? ( app-arch/zstd )
+	dev-libs/elfutils
+	sys-libs/binutils-libs:="
+
+DEPEND="${RDEPEND}
+	>=sys-kernel/linux-headers-5.10
+	java? ( virtual/jdk )
+"
+
+S_K="${WORKDIR}/linux-${LINUX_VER}"
+S="${S_K}/tools/perf"
+
+CONFIG_CHECK="~PERF_EVENTS ~KALLSYMS"
+
+QA_FLAGS_IGNORED=(
+	'usr/bin/perf-read-vdso32' # not linked with anything except for libc
+	'usr/libexec/perf-core/dlfilters/.*' # plugins
+)
+
+pkg_pretend() {
+	if ! use doc ; then
+		ewarn "Without the doc USE flag you won't get any documentation nor man pages."
+		ewarn "And without man pages, you won't get any --help output for perf and its"
+		ewarn "sub-tools."
+	fi
+}
+
+pkg_setup() {
+	use clang && llvm_pkg_setup
+	# We enable python unconditionally as libbpf always generates
+	# API headers using python script
+	python_setup
+}
+
+# src_unpack and src_prepare are copied to dev-util/bpftool since
+# it's building from the same tarball, please keep it in sync with bpftool
+src_unpack() {
+	local paths=(
+		tools/arch tools/build tools/include tools/lib tools/perf tools/scripts
+		scripts include lib "arch/*/lib"
+	)
+
+	# We expect the tar implementation to support the -j option (both
+	# GNU tar and libarchive's tar support that).
+	echo ">>> Unpacking ${LINUX_SOURCES} (${paths[*]}) to ${PWD}"
+	tar --wildcards -xpf "${DISTDIR}"/${LINUX_SOURCES} \
+		"${paths[@]/#/linux-${LINUX_VER}/}" || die
+
+	if [[ -n ${LINUX_PATCH} ]] ; then
+		eshopts_push -o noglob
+		ebegin "Filtering partial source patch"
+		filterdiff -p1 ${paths[@]/#/-i } -z "${DISTDIR}"/${LINUX_PATCH} \
+			> ${P}.patch
+		eend $? || die "filterdiff failed"
+		eshopts_pop
+	fi
+
+	local a
+	for a in ${A}; do
+		[[ ${a} == ${LINUX_SOURCES} ]] && continue
+		[[ ${a} == ${LINUX_PATCH} ]] && continue
+		unpack ${a}
+	done
+}
+
+src_prepare() {
+	default
+	if [[ -n ${LINUX_PATCH} ]] ; then
+		pushd "${S_K}" >/dev/null || die
+		eapply "${WORKDIR}"/${P}.patch
+		popd || die
+	fi
+
+	pushd "${S_K}" >/dev/null || die
+	eapply "${FILESDIR}"/${P}-clang.patch
+	popd || die
+
+	# Drop some upstream too-developer-oriented flags and fix the
+	# Makefile in general
+	sed -i \
+		-e "s:\$(sysconfdir_SQ)/bash_completion.d:$(get_bashcompdir):" \
+		"${S}"/Makefile.perf || die
+	# A few places still use -Werror w/out $(WERROR) protection.
+	sed -i -e 's:-Werror::' \
+		"${S}"/Makefile.perf "${S_K}"/tools/lib/bpf/Makefile || die
+
+	# Avoid the call to make kernelversion
+	sed -i -e '/PERF-VERSION-GEN/d' Makefile.perf || die
+	echo "#define PERF_VERSION \"${PV}\"" > PERF-VERSION-FILE
+
+	# The code likes to compile local assembly files which lack ELF markings.
+	find -name '*.S' -exec sed -i '$a.section .note.GNU-stack,"",%progbits' {} +
+}
+
+puse() { usex $1 "" no; }
+perf_make() {
+	# The arch parsing is a bit funky.  The perf tools package is integrated
+	# into the kernel, so it wants an ARCH that looks like the kernel arch,
+	# but it also wants to know about the split value -- i386/x86_64 vs just
+	# x86.  We can get that by telling the func to use an older linux version.
+	# It's kind of a hack, but not that bad ...
+
+	# LIBDIR sets a search path of perf-gtk.so. Bug 515954
+
+	local arch=$(tc-arch-kernel)
+	local java_dir
+	use java && java_dir="${EPREFIX}/etc/java-config-2/current-system-vm"
+	# FIXME: NO_CORESIGHT
+	emake V=1 VF=1 \
+		HOSTCC="$(tc-getBUILD_CC)" HOSTLD="$(tc-getBUILD_LD)" \
+		CC="$(tc-getCC)" CXX="$(tc-getCXX)" AR="$(tc-getAR)" LD="$(tc-getLD)" NM="$(tc-getNM)" \
+		PKG_CONFIG="$(tc-getPKG_CONFIG)" \
+		prefix="${EPREFIX}/usr" bindir_relative="bin" \
+		tipdir="share/doc/${PF}" \
+		EXTRA_CFLAGS="${CFLAGS}" \
+		EXTRA_LDFLAGS="${LDFLAGS}" \
+		ARCH="${arch}" \
+		JDIR="${java_dir}" \
+		LIBCLANGLLVM=$(usex clang 1 "") \
+		LIBPFM4=$(usex libpfm 1 "") \
+		NO_AUXTRACE="" \
+		NO_BACKTRACE="" \
+		NO_CORESIGHT=1 \
+		NO_DEMANGLE= \
+		GTK2=$(usex gtk 1 "") \
+		feature-gtk2-infobar=$(usex gtk 1 "") \
+		NO_JVMTI=$(puse java) \
+		NO_LIBAUDIT=$(puse audit) \
+		NO_LIBBABELTRACE=$(puse babeltrace) \
+		NO_LIBBIONIC=1 \
+		NO_LIBBPF= \
+		NO_LIBCRYPTO=$(puse crypt) \
+		NO_LIBDW_DWARF_UNWIND= \
+		NO_LIBELF= \
+		NO_LIBNUMA=$(puse numa) \
+		NO_LIBPERL=$(puse perl) \
+		NO_LIBPYTHON=$(puse python) \
+		NO_LIBUNWIND=$(puse unwind) \
+		NO_LIBZSTD=$(puse zstd) \
+		NO_SDT=$(puse systemtap) \
+		NO_SLANG=$(puse slang) \
+		NO_LZMA=$(puse lzma) \
+		NO_ZLIB=$(puse zlib) \
+		WERROR=0 \
+		LIBDIR="/usr/libexec/perf-core" \
+		libdir="${EPREFIX}/usr/$(get_libdir)" \
+		plugindir="${EPREFIX}/usr/$(get_libdir)/perf/plugins" \
+		"$@"
+}
+
+src_compile() {
+	# test-clang.bin not build with g++
+	if use clang; then
+		make -C "${S_K}/tools/build/feature" V=1 CXX=${CHOST}-clang++ test-clang.bin || die
+	fi
+	perf_make -f Makefile.perf
+	use doc && perf_make -C Documentation man
+}
+
+src_test() {
+	:
+}
+
+src_install() {
+	_install_python_ext() {
+		perf_make -f Makefile.perf install-python_ext DESTDIR="${D}"
+	}
+
+	perf_make -f Makefile.perf install DESTDIR="${D}"
+
+	if use python; then
+		python_foreach_impl _install_python_ext
+	fi
+
+	if use gtk; then
+		local libdir
+		libdir="$(get_libdir)"
+		# on some arches it ends up in lib even on 64bit, ppc64 for instance.
+		[[ -f "${ED}"/usr/lib/libperf-gtk.so ]] && libdir="lib"
+		mv "${ED}"/usr/${libdir}/libperf-gtk.so \
+			"${ED}"/usr/libexec/perf-core || die
+	fi
+
+	dodoc CREDITS
+
+	dodoc *txt Documentation/*.txt
+
+	# perf needs this decompressed to print out tips for users
+	docompress -x /usr/share/doc/${PF}/tips.txt
+
+	if use doc ; then
+		doman Documentation/*.1
+	fi
+}
-- 
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