Commit d82f5cb9 authored by Thomas Petazzoni's avatar Thomas Petazzoni Committed by Peter Korsgaard
Browse files

perf: new package 



This patch adds a new package that allows to build the 'perf'
userspace tool that comes in the tools/perf directory of the kernel
sources.

It is an alternative proposal to the one done by Kaiwan Billimoria
<kaiwan.billimoria@gmail.com>, in that it creates the package in
package/perf/. It therefore properly integrates with the Buildroot
package infrastructure.

Of course, the package depends on the Linux kernel to be built by
Buildroot, in order to get Perf sources matching the version of the
kernel that will be executed.

Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
parent 871846ca

package/Config.in

+1 −0
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@@ -35,6 +35,7 @@ source "package/ltrace/Config.in" 
source "package/memstat/Config.in"

source "package/netperf/Config.in"

source "package/oprofile/Config.in"

source "package/perf/Config.in"

source "package/ramspeed/Config.in"

source "package/rt-tests/Config.in"

source "package/strace/Config.in"

package/perf/Config.in

0 → 100644
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config BR2_PACKAGE_PERF

	bool "perf"

	depends on BR2_LINUX_KERNEL

	depends on BR2_LARGEFILE

	help

	  perf (sometimes "Perf Events" or perf tools, originally

	  "Performance Counters for Linux") - is a performance

	  analyzing tool in Linux, available from kernel version

	  2.6.31. User-space controlling utility, called 'perf' has

	  git-like interface with subcommands. It is capable of

	  statistical profiling of entire system (both kernel and user

	  code), single CPU or severals threads.



	  This package builds and install the userspace 'perf'

	  command. It is up to the user to ensure that the kernel

	  configuration has all suitable options enable to allow a

	  proper operation of 'perf'.



	  https://perf.wiki.kernel.org/



comment "perf only available if Linux kernel is enabled, and requires largefile support"

	depends on !BR2_LINUX_KERNEL || !BR2_LARGEFILE

package/perf/perf.mk

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#############################################################

#

# perf

#

#############################################################



# Source taken from the Linux kernel tree

PERF_SOURCE =

PERF_VERSION = $(call qstrip,$(BR2_LINUX_KERNEL_VERSION))



PERF_DEPENDENCIES = linux



PERF_MAKE_FLAGS = \

	$(LINUX_MAKE_FLAGS) \

	NO_LIBELF=1 \

	NO_DWARF=1 \

	NO_LIBAUDIT=1 \

	NO_NEWT=1 \

	NO_GTK2=1 \

	NO_LIBPERL=1 \

	NO_LIBPYTHON=1 \

	DESTDIR=$(TARGET_DIR) \

	prefix=/usr \

	WERROR=0



define PERF_BUILD_CMDS

	$(MAKE) -C $(LINUX_DIR)/tools/perf \

		$(PERF_MAKE_FLAGS) O=$(@D)

endef



# After installation, we remove the Perl and Python scripts from the

# target.

define PERF_INSTALL_TARGET_CMDS

	$(MAKE) -C $(LINUX_DIR)/tools/perf \

		$(PERF_MAKE_FLAGS) O=$(@D) install

	$(RM) -rf $(TARGET_DIR)/usr/libexec/perf-core/scripts/

endef



$(eval $(generic-package))