[Solved] Kernel tool: perf ?

[Rich]

Hi polikuo
When I had to compile a kernel I needed to load:

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tce-load -i compiletc perl5 bash ncursesw-dev bc glibc_apps elfutils-devI think the  ncursesw-dev  was only needed for  make menuconfig.

I keep on seeing this popping up in your output:

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sh: command: line 1: illegal option -cMaybe you need to install  bash?

[polikuo]

I keep on seeing this popping up in your output:

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sh: command: line 1: illegal option -cMaybe you need to install  bash?

Believe me, I do.

I even switch into bash environment before I type make.

[Rich]

Hi polikuo

... I even switch into bash environment before I type make.

You shouldn't need to do that. In fact, I would not do that just in case it interferes with some other part of the process.

Do your  grep  and  egrep  commands have the  -c  option enabled?

[polikuo]

You shouldn't need to do that. In fact, I would not do that just in case it interferes with some other part of the process.

I've tried both, same result.

Do your  grep  and  egrep  commands have the  -c  option enabled?

Just try it.
Both busybox grep.tcz versions support -c option.

[Juanito]

It works for me compiled natively on piCore64 using this patch: https://www.spinics.net/lists/stable/msg403445.html

..and:

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$ tce-load -i compiletc
$ find . -name Makefile.config -type f -exec sed -i 's/-O6//g' {} \;
$ find . -name Makefile.config -type f -exec sed -i 's/-ggdb3//g' {} \;
$ make -C tools/perf JOBS=1 V=1 WERROR=0 EXTRA_CFLAGS="-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fcommon"

[polikuo]

It works for me compiled natively on piCore64 using this patch: https://www.spinics.net/lists/stable/msg403445.html

Great, many thanks.
It successfully compiles.

For those who may want to replicate, here's what I did:

1. Clear the onboot.lst, leaving only openssh.tcz for remote access.
2. Save the patch Juanito provides in the previous post.
3. Reboot

Then run these commands:

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tar xf linux-5.4.51.tar.xz
tce-load -i compiletc
find . -name Makefile.config -type f -exec sed -i 's/-O6//g' {} \;
find . -name Makefile.config -type f -exec sed -i 's/-ggdb3//g' {} \;
CFLAGS='-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe'
CXXFLAGS='-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fno-exceptions -fno-rtti'
export CFLAGS CXXFLAGS
cd linux-5.4.51/
patch -p1 < ../perf.patch
make -C tools/perf JOBS=1 V=1 WERROR=0 EXTRA_CFLAGS="-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fcommon"

The perf binary should appears in the tools/perf directory.
Enjoy~ 

P.S. please mark this topic solved.

[Rich]

Hi polikuo

... P.S. please mark this topic solved.

Done.