linux-kernel - Re: [PATCH] MIPS: Enable some missed configs in loongson3

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Date:   Wed, 10 Mar 2021 16:09:41 +0100
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH] MIPS: Enable some missed configs in loongson3_defconfig
 to support bpftrace

On Mon, Mar 08, 2021 at 02:48:18PM +0800, Tiezhu Yang wrote:
> 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.
> 
> According to Linux Kernel Requirements in bpftrace/INSTALL.md [1], the
> kernel needs to be built with the following options:
> 
> CONFIG_BPF=y
> CONFIG_BPF_SYSCALL=y
> CONFIG_BPF_JIT=y
> CONFIG_HAVE_EBPF_JIT=y
> CONFIG_BPF_EVENTS=y
> CONFIG_FTRACE_SYSCALLS=y
> CONFIG_FUNCTION_TRACER=y
> CONFIG_HAVE_DYNAMIC_FTRACE=y
> CONFIG_DYNAMIC_FTRACE=y
> CONFIG_HAVE_KPROBES=y
> CONFIG_KPROBES=y
> CONFIG_KPROBE_EVENTS=y
> CONFIG_ARCH_SUPPORTS_UPROBES=y
> CONFIG_UPROBES=y
> CONFIG_UPROBE_EVENTS=y
> CONFIG_DEBUG_FS=y
> 
> So enable some missed configs in loongson3_defconfig to make sure
> the above configs are set after make loongson3_defconfig.
> 
> [1] https://github.com/iovisor/bpftrace/blob/master/INSTALL.md
> 
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
>  arch/mips/configs/loongson3_defconfig | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)

applied to mips-next.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]