mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 01:51:34 +00:00
cd69ef88a7
Without defining ARCH=arm, building perf for Android ARM will fail, because it needs architecture specific files. So add related relevant information to the android documentation. Signed-off-by: Joonsoo Kim <js1304@gmail.com> Reviewed-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Irina Tirdea <irina.tirdea@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1351518066-4791-1-git-send-email-js1304@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
79 lines
3.0 KiB
Plaintext
79 lines
3.0 KiB
Plaintext
How to compile perf for Android
|
|
=========================================
|
|
|
|
I. Set the Android NDK environment
|
|
------------------------------------------------
|
|
|
|
(a). Use the Android NDK
|
|
------------------------------------------------
|
|
1. You need to download and install the Android Native Development Kit (NDK).
|
|
Set the NDK variable to point to the path where you installed the NDK:
|
|
export NDK=/path/to/android-ndk
|
|
|
|
2. Set cross-compiling environment variables for NDK toolchain and sysroot.
|
|
For arm:
|
|
export NDK_TOOLCHAIN=${NDK}/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/arm-linux-androideabi-
|
|
export NDK_SYSROOT=${NDK}/platforms/android-9/arch-arm
|
|
For x86:
|
|
export NDK_TOOLCHAIN=${NDK}/toolchains/x86-4.6/prebuilt/linux-x86/bin/i686-linux-android-
|
|
export NDK_SYSROOT=${NDK}/platforms/android-9/arch-x86
|
|
|
|
This method is not working for Android NDK versions up to Revision 8b.
|
|
perf uses some bionic enhancements that are not included in these NDK versions.
|
|
You can use method (b) described below instead.
|
|
|
|
(b). Use the Android source tree
|
|
-----------------------------------------------
|
|
1. Download the master branch of the Android source tree.
|
|
Set the environment for the target you want using:
|
|
source build/envsetup.sh
|
|
lunch
|
|
|
|
2. Build your own NDK sysroot to contain latest bionic changes and set the
|
|
NDK sysroot environment variable.
|
|
cd ${ANDROID_BUILD_TOP}/ndk
|
|
For arm:
|
|
./build/tools/build-ndk-sysroot.sh --abi=arm
|
|
export NDK_SYSROOT=${ANDROID_BUILD_TOP}/ndk/build/platforms/android-3/arch-arm
|
|
For x86:
|
|
./build/tools/build-ndk-sysroot.sh --abi=x86
|
|
export NDK_SYSROOT=${ANDROID_BUILD_TOP}/ndk/build/platforms/android-3/arch-x86
|
|
|
|
3. Set the NDK toolchain environment variable.
|
|
For arm:
|
|
export NDK_TOOLCHAIN=${ANDROID_TOOLCHAIN}/arm-linux-androideabi-
|
|
For x86:
|
|
export NDK_TOOLCHAIN=${ANDROID_TOOLCHAIN}/i686-linux-android-
|
|
|
|
II. Compile perf for Android
|
|
------------------------------------------------
|
|
You need to run make with the NDK toolchain and sysroot defined above:
|
|
For arm:
|
|
make ARCH=arm CROSS_COMPILE=${NDK_TOOLCHAIN} CFLAGS="--sysroot=${NDK_SYSROOT}"
|
|
For x86:
|
|
make ARCH=x86 CROSS_COMPILE=${NDK_TOOLCHAIN} CFLAGS="--sysroot=${NDK_SYSROOT}"
|
|
|
|
III. Install perf
|
|
-----------------------------------------------
|
|
You need to connect to your Android device/emulator using adb.
|
|
Install perf using:
|
|
adb push perf /data/perf
|
|
|
|
If you also want to use perf-archive you need busybox tools for Android.
|
|
For installing perf-archive, you first need to replace #!/bin/bash with #!/system/bin/sh:
|
|
sed 's/#!\/bin\/bash/#!\/system\/bin\/sh/g' perf-archive >> /tmp/perf-archive
|
|
chmod +x /tmp/perf-archive
|
|
adb push /tmp/perf-archive /data/perf-archive
|
|
|
|
IV. Environment settings for running perf
|
|
------------------------------------------------
|
|
Some perf features need environment variables to run properly.
|
|
You need to set these before running perf on the target:
|
|
adb shell
|
|
# PERF_PAGER=cat
|
|
|
|
IV. Run perf
|
|
------------------------------------------------
|
|
Run perf on your device/emulator to which you previously connected using adb:
|
|
# ./data/perf
|