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From: Michael Ellerman <mpe@ellerman.id.au>
To: Weizhao Ouyang <o451686892@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>
Cc: Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>,
Michal Simek <monstr@monstr.eu>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Nick Hu <nickhu@andestech.com>, Greentime Hu <green.hu@gmail.com>,
Vincent Chen <deanbo422@gmail.com>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Helge Deller <deller@gmx.de>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
"David S. Miller" <davem@davemloft.net>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org,
linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org,
linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
Weizhao Ouyang <o451686892@gmail.com>
Subject: Re: [PATCH v2] ftrace: Cleanup ftrace_dyn_arch_init()
Date: Tue, 07 Sep 2021 00:22:46 +1000 [thread overview]
Message-ID: <87v93dn5qh.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <20210906111626.1259867-1-o451686892@gmail.com>
Weizhao Ouyang <o451686892@gmail.com> writes:
> Most of ARCHs use empty ftrace_dyn_arch_init(), introduce a weak common
> ftrace_dyn_arch_init() to cleanup them.
>
> Signed-off-by: Weizhao Ouyang <o451686892@gmail.com>
> Acked-by: Heiko Carstens <hca@linux.ibm.com> (s390)
>
> ---
>
> Changes in v2:
> -- correct CONFIG_DYNAMIC_FTRACE on PowerPC
> -- add Acked-by tag
> diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h
> index debe8c4f7062..d59f67c0225f 100644
> --- a/arch/powerpc/include/asm/ftrace.h
> +++ b/arch/powerpc/include/asm/ftrace.h
> @@ -61,6 +61,10 @@ struct dyn_arch_ftrace {
> };
> #endif /* __ASSEMBLY__ */
>
> +#ifdef CONFIG_DYNAMIC_FTRACE
> +int __init ftrace_dyn_arch_init(void);
> +#endif /* CONFIG_DYNAMIC_FTRACE */
> +
> #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
> #define ARCH_SUPPORTS_FTRACE_OPS 1
> #endif
That breaks the build for powerpc:
/linux/arch/powerpc/include/asm/ftrace.h: Assembler messages:
/linux/arch/powerpc/include/asm/ftrace.h:65: Error: unrecognized opcode: `int'
make[4]: *** [/linux/scripts/Makefile.build:352: arch/powerpc/kernel/trace/ftrace_64.o] Error 1
make[3]: *** [/linux/scripts/Makefile.build:514: arch/powerpc/kernel/trace] Error 2
make[2]: *** [/linux/scripts/Makefile.build:514: arch/powerpc/kernel] Error 2
make[1]: *** [/linux/Makefile:1861: arch/powerpc] Error 2
make[1]: *** Waiting for unfinished jobs....
It needs to be inside an #ifndef __ASSEMBLY__ section.
cheers
next prev parent reply other threads:[~2021-09-06 14:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-06 11:16 Weizhao Ouyang
2021-09-06 14:22 ` Michael Ellerman [this message]
2021-09-06 14:57 ` Weizhao Ouyang
2021-09-06 20:36 ` Helge Deller
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