package/bpftrace: new package

bpftrace is a high-level tracing language for Linux enhanced Berkeley
Packet Filter (eBPF) available in recent Linux kernels (4.1 and later).

Only tested on x86_64.

Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Jugurtha BELKALEM <jugurtha.belkalem@smile.fr>
Cc: Qais Yousef <qyousef@layalina.io>
Signed-off-by: Mat Martineau <martineau@kernel.org>
[Arnout:
 - Remove duplicate 'depends on BR2_TOOLCHAIN_HAS_THREADS'
 - Fix Config.in comment text and dependencies
 - Order dependencies alphabetically
]
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

DEVELOPERS

@@ -2583,6 +2583,9 @@ F:	package/synergy/
 N:	Prabhu Sannachi <prabhu.sannachi@collins.com>
 F:	package/redis-plus-plus/
 
+N:	Qais Yousef <qais.yousef@arm.com>
+F:	package/bpftrace/
+
 N:	Rafal Susz <rafal.susz@gmail.com>
 F:	board/avnet/s6lx9_microboard/
 F:	configs/s6lx9_microboard_defconfig
@@ -2686,6 +2689,7 @@ F:	package/alure/
 F:	package/aubio/
 F:	package/bcc/
 F:	package/binutils/
+F:	package/bpftrace/
 F:	package/bullet/
 F:	package/clinfo/
 F:	package/efl/

package/Config.in

@@ -91,6 +91,7 @@ menu "Debugging, profiling and benchmark"
 	source "package/blktrace/Config.in"
 	source "package/bonnie/Config.in"
 	source "package/bpftool/Config.in"
+	source "package/bpftrace/Config.in"
 	source "package/cache-calibrator/Config.in"
 	source "package/clinfo/Config.in"
 	source "package/clpeak/Config.in"

package/bpftrace/Config.in

@@ -0,0 +1,56 @@
+config BR2_PACKAGE_BPFTRACE_ARCH_SUPPORTS
+	bool
+	default y if BR2_aarch64 || BR2_aarch64_be
+	default y if BR2_x86_64
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
+
+config BR2_PACKAGE_BPFTRACE
+	bool "bpftrace"
+	depends on BR2_PACKAGE_BPFTRACE_ARCH_SUPPORTS
+	depends on BR2_USE_MMU # bcc -> python3
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # libbpf
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS # bcc
+	depends on BR2_TOOLCHAIN_USES_GLIBC # bcc
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_7 # bcc -> clang
+	depends on BR2_INSTALL_LIBSTDCPP # bcc -> clang
+	depends on BR2_HOST_GCC_AT_LEAST_7 # bcc -> clang
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13 # libbpf
+	depends on BR2_USE_WCHAR # bcc -> clang, bcc -> python3, libbpf
+	depends on BR2_TOOLCHAIN_HAS_THREADS # bcc -> clang, bcc -> python3, libbpf
+	depends on !BR2_STATIC_LIBS # bcc -> clang, bcc -> python3, libbpf
+	select BR2_PACKAGE_BCC
+	select BR2_PACKAGE_BZIP2
+	select BR2_PACKAGE_CEREAL
+	select BR2_PACKAGE_ELFUTILS
+	select BR2_PACKAGE_LIBBPF
+	select BR2_PACKAGE_LLVM
+	# LLVM RTTI mendatory: https://github.com/iovisor/bpftrace/issues/1156
+	select BR2_PACKAGE_LLVM_RTTI
+	select BR2_PACKAGE_XZ
+	help
+	  bpftrace is a high-level tracing language for Linux enhanced
+	  Berkeley Packet Filter (eBPF) available in recent Linux
+	  kernels (4.x).
+
+	  bpftrace uses LLVM as a backend to compile scripts to
+	  BPF-bytecode and makes use of BCC for interacting with the
+	  Linux BPF system, as well as existing Linux tracing
+	  capabilities: kernel dynamic tracing (kprobes), user-level
+	  dynamic tracing (uprobes), and tracepoints. The bpftrace
+	  language is inspired by awk and C, and predecessor tracers
+	  such as DTrace and SystemTap.
+
+	  It's highly recommended to NOT strip bpftrace binary.
+	  To do so, add "bpftrace" to BR2_STRIP_EXCLUDE_FILES.
+	  See:
+	    https://bugzilla.redhat.com/show_bug.cgi?id=1865787
+
+	  https://www.github.com/iovisor/bpftrace
+
+comment "bpftrace needs a glibc toolchain w/ C++, gcc >= 7, host gcc >= 7, kernel headers >= 4.13"
+	depends on BR2_PACKAGE_BPFTRACE_ARCH_SUPPORTS
+	depends on BR2_USE_MMU
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4
+	depends on !BR2_TOOLCHAIN_USES_GLIBC || !BR2_INSTALL_LIBSTDCPP \
+		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_7 || !BR2_HOST_GCC_AT_LEAST_7 \
+		|| !BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13

package/bpftrace/bpftrace.hash

@@ -0,0 +1,3 @@
+# locally calculated
+sha256  b520340f28ce4d6f2fb2355f1675b6801ff8498ed9e8bff14abbbf6baff5a08e  bpftrace-0.19.1.tar.gz
+sha256  cfc7749b96f63bd31c3c42b5c471bf756814053e847c10f3eb003417bc523d30  LICENSE

package/bpftrace/bpftrace.mk

@@ -0,0 +1,34 @@
+################################################################################
+#
+# bpftrace
+#
+################################################################################
+
+BPFTRACE_VERSION = 0.19.1
+BPFTRACE_SITE = $(call github,iovisor,bpftrace,v$(BPFTRACE_VERSION))
+BPFTRACE_LICENSE = Apache-2.0
+BPFTRACE_LICENSE_FILES = LICENSE
+BPFTRACE_DEPENDENCIES = \
+	bcc \
+	bzip2 \
+	cereal \
+	elfutils \
+	host-bison \
+	host-flex \
+	libbpf \
+	llvm \
+	xz
+
+# libbfd, libopcodes
+ifeq ($(BR2_PACKAGE_BINUTILS),y)
+BPFTRACE_DEPENDENCIES += binutils
+endif
+
+BPFTRACE_CONF_OPTS += \
+	-DBUILD_SHARED_LIBS:BOOL=OFF \
+	-DBUILD_TESTING:BOOL=OFF \
+	-DENABLE_MAN:BOOL=OFF \
+	-DINSTALL_TOOL_DOCS:BOOL=OFF \
+	-DUSE_SYSTEM_BPF_BCC:BOOL=ON
+
+$(eval $(cmake-package))