From: Steven Rostedt <rostedt@goodmis.org> To: Alan Kao <alankao@andestech.com> Cc: Palmer Dabbelt <palmer@sifive.com>, Albert Ou <albert@sifive.com>, <linux-riscv@lists.infradead.org>, <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@redhat.com>, Greentime Hu <greentime@andestech.com>, Zong Li <zong@andestech.com> Subject: Re: [PATCH] riscv/ftrace: Fix the problem modules cannot find _mcount Date: Tue, 8 May 2018 09:11:42 -0400 [thread overview] Message-ID: <20180508091142.12b5231a@gandalf.local.home> (raw) In-Reply-To: <1525749717-384-1-git-send-email-alankao@andestech.com> On Tue, 8 May 2018 11:21:57 +0800 Alan Kao <alankao@andestech.com> wrote: > Enabling ftrace and module support at the same time fails the kernel > build process, because modules cannot find the _mcount symbol. This > patch fixes this issue. I think you have a much bigger issue. > > Signed-off-by: Alan Kao <alankao@andestech.com> > Cc: Greentime Hu <greentime@andestech.com> > Cc: Zong Li <zong@andestech.com> > --- > arch/riscv/kernel/mcount.S | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/riscv/kernel/mcount.S b/arch/riscv/kernel/mcount.S > index ce9bdc57a2a1..5721624886a1 100644 > --- a/arch/riscv/kernel/mcount.S > +++ b/arch/riscv/kernel/mcount.S > @@ -126,5 +126,5 @@ do_trace: > RESTORE_ABI_STATE > ret > ENDPROC(_mcount) > -EXPORT_SYMBOL(_mcount) > #endif > +EXPORT_SYMBOL(_mcount) How does this work? How do you export _mcount if _mcount isn't even defined? -- Steve
WARNING: multiple messages have this Message-ID (diff)
From: rostedt@goodmis.org (Steven Rostedt) To: linux-riscv@lists.infradead.org Subject: [PATCH] riscv/ftrace: Fix the problem modules cannot find _mcount Date: Tue, 8 May 2018 09:11:42 -0400 [thread overview] Message-ID: <20180508091142.12b5231a@gandalf.local.home> (raw) In-Reply-To: <1525749717-384-1-git-send-email-alankao@andestech.com> On Tue, 8 May 2018 11:21:57 +0800 Alan Kao <alankao@andestech.com> wrote: > Enabling ftrace and module support at the same time fails the kernel > build process, because modules cannot find the _mcount symbol. This > patch fixes this issue. I think you have a much bigger issue. > > Signed-off-by: Alan Kao <alankao@andestech.com> > Cc: Greentime Hu <greentime@andestech.com> > Cc: Zong Li <zong@andestech.com> > --- > arch/riscv/kernel/mcount.S | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/riscv/kernel/mcount.S b/arch/riscv/kernel/mcount.S > index ce9bdc57a2a1..5721624886a1 100644 > --- a/arch/riscv/kernel/mcount.S > +++ b/arch/riscv/kernel/mcount.S > @@ -126,5 +126,5 @@ do_trace: > RESTORE_ABI_STATE > ret > ENDPROC(_mcount) > -EXPORT_SYMBOL(_mcount) > #endif > +EXPORT_SYMBOL(_mcount) How does this work? How do you export _mcount if _mcount isn't even defined? -- Steve
next prev parent reply other threads:[~2018-05-08 13:11 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-05-08 3:21 [PATCH] riscv/ftrace: Fix the problem modules cannot find _mcount Alan Kao 2018-05-08 3:21 ` Alan Kao 2018-05-08 13:11 ` Steven Rostedt [this message] 2018-05-08 13:11 ` Steven Rostedt 2018-05-09 2:36 ` Alan Kao 2018-05-09 2:36 ` Alan Kao 2018-05-09 3:02 ` Steven Rostedt 2018-05-09 3:02 ` Steven Rostedt 2018-06-04 20:30 ` Palmer Dabbelt 2018-06-04 20:30 ` Palmer Dabbelt 2018-06-04 20:30 ` [PATCH] riscv/ftrace: Export _mcount when FUNCTION_GRAPH_TRACER isn't set Palmer Dabbelt 2018-06-04 20:30 ` Palmer Dabbelt 2018-06-05 1:12 ` Alan Kao 2018-06-05 1:12 ` Alan Kao
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