From: Torsten Duwe <duwe@lst.de>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@ozlabs.org, bsingharora@gmail.com,
linux-kernel@vger.kernel.org, rostedt@goodmis.org,
kamalesh@linux.vnet.ibm.com, pmladek@suse.com, jeyu@redhat.com,
jkosina@suse.cz, live-patching@vger.kernel.org, mbenes@suse.cz
Subject: Re: [PATCH v2 2/8] powerpc/module: Only try to generate the ftrace_caller() stub once
Date: Tue, 1 Mar 2016 13:00:11 +0100 [thread overview]
Message-ID: <20160301120011.GB10342@lst.de> (raw)
In-Reply-To: <1456737989-8755-2-git-send-email-mpe@ellerman.id.au>
On Mon, Feb 29, 2016 at 08:26:23PM +1100, Michael Ellerman wrote:
[...]
> diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c
> index 2c01665eb410..dd095496d225 100644
> --- a/arch/powerpc/kernel/module_32.c
> +++ b/arch/powerpc/kernel/module_32.c
> @@ -294,11 +294,19 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
> return -ENOEXEC;
> }
> }
> +
> + return 0;
> +}
> +
> #ifdef CONFIG_DYNAMIC_FTRACE
> - module->arch.tramp =
> - do_plt_call(module->core_layout.base,
> - (unsigned long)ftrace_caller,
> - sechdrs, module);
> -#endif
> +int module_finalize_ftrace(struct module *module, const Elf_Shdr *sechdrs)
> +{
> + module->arch.tramp = do_plt_call(module->core_layout.base,
> + (unsigned long)ftrace_caller,
> + sechdrs, module);
> + if (!mod->arch.tramp)
That should probably read (!module->arch.tramp).
> + return -ENOENT;
> +
> return 0;
> }
> +#endif
next prev parent reply other threads:[~2016-03-01 12:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-29 9:26 [PATCH v2 1/8] powerpc: Create a helper for getting the kernel toc value Michael Ellerman
2016-02-29 9:26 ` [PATCH v2 2/8] powerpc/module: Only try to generate the ftrace_caller() stub once Michael Ellerman
2016-03-01 1:40 ` kbuild test robot
2016-03-01 10:07 ` Kamalesh Babulal
2016-03-01 12:00 ` Torsten Duwe [this message]
2016-03-02 1:52 ` Michael Ellerman
2016-02-29 9:26 ` [PATCH v2 3/8] powerpc/module: Mark module stubs with a magic value Michael Ellerman
2016-02-29 9:26 ` [PATCH v2 4/8] powerpc/module: Create a special stub for ftrace_caller() Michael Ellerman
2016-02-29 9:26 ` [PATCH v2 5/8] powerpc/ftrace: Use generic ftrace_modify_all_code() Michael Ellerman
2016-03-01 10:08 ` Kamalesh Babulal
2016-02-29 9:26 ` [PATCH v2 6/8] powerpc/ftrace: Use $(CC_FLAGS_FTRACE) when disabling ftrace Michael Ellerman
2016-02-29 9:26 ` [PATCH v2 7/8] powerpc/ftrace: Add support for -mprofile-kernel ftrace ABI Michael Ellerman
2016-02-29 9:26 ` [PATCH v2 8/8] powerpc/ftrace: Add Kconfig & Make glue for mprofile-kernel Michael Ellerman
2016-03-01 9:56 ` [PATCH v2 1/8] powerpc: Create a helper for getting the kernel toc value Kamalesh Babulal
2016-03-01 11:58 ` Torsten Duwe
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