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Date: Tue, 28 Sep 2021 21:15:25 +0800 From: Greentime Hu <green.hu@...il.com> To: Randy Dunlap <rdunlap@...radead.org>, Alan Kao <alankao@...estech.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Nick Hu <nickhu@...estech.com>, Vincent Chen <deanbo422@...il.com>, kclin@...estech.com Subject: Re: [PATCH] NDS32: export __trace_hardirqs_on/_offf for entry/exit Randy Dunlap <rdunlap@...radead.org> 於 2021年9月28日 週二 下午1:27寫道: > > Add exports for __trace_hardirqs_on/_off and use them in > kernel/ex-entry.S and kernel/ex-exit.S to fix build/linker errors. > > nds32le-linux-ld: arch/nds32/kernel/ex-entry.o: in function `fucop_ctl_done': > (.text+0x12a): undefined reference to `__trace_hardirqs_off' > (.text+0x12a): relocation truncated to fit: R_NDS32_25_PCREL_RELA against undefined symbol `__trace_hardirqs_off' > nds32le-linux-ld: arch/nds32/kernel/ex-exit.o: in function `no_work_pending': > (.text+0xea): undefined reference to `__trace_hardirqs_off' > nds32le-linux-ld: (.text+0xee): undefined reference to `__trace_hardirqs_off' > nds32le-linux-ld: (.text+0xf2): undefined reference to `__trace_hardirqs_on' > nds32le-linux-ld: (.text+0xf6): undefined reference to `__trace_hardirqs_on' > > Fixes: 0cde56e0280d ("nds32: Fix a kernel panic issue because of wrong frame pointer access.") > Signed-off-by: Randy Dunlap <rdunlap@...radead.org> > Cc: Nick Hu <nickhu@...estech.com> > Cc: Greentime Hu <green.hu@...il.com> > Cc: Vincent Chen <deanbo422@...il.com> > --- > arch/nds32/include/asm/ftrace.h | 3 +++ > arch/nds32/kernel/ex-entry.S | 1 + > arch/nds32/kernel/ex-exit.S | 2 +- > arch/nds32/kernel/ftrace.c | 3 +++ > 4 files changed, 8 insertions(+), 1 deletion(-) > > --- linux-next-20210917.orig/arch/nds32/kernel/ftrace.c > +++ linux-next-20210917/arch/nds32/kernel/ftrace.c > @@ -276,8 +276,11 @@ noinline void __trace_hardirqs_off(void) > { > trace_hardirqs_off(); > } > +EXPORT_SYMBOL(__trace_hardirqs_off); > + > noinline void __trace_hardirqs_on(void) > { > trace_hardirqs_on(); > } > +EXPORT_SYMBOL(__trace_hardirqs_on); > #endif /* CONFIG_TRACE_IRQFLAGS */ > --- linux-next-20210917.orig/arch/nds32/include/asm/ftrace.h > +++ linux-next-20210917/arch/nds32/include/asm/ftrace.h > @@ -15,6 +15,9 @@ > > extern void _mcount(unsigned long parent_ip); > > +extern void __trace_hardirqs_off(void); > +extern void __trace_hardirqs_on(void); > + > #ifdef CONFIG_DYNAMIC_FTRACE > > #define FTRACE_ADDR ((unsigned long)_ftrace_caller) > --- linux-next-20210917.orig/arch/nds32/kernel/ex-entry.S > +++ linux-next-20210917/arch/nds32/kernel/ex-entry.S > @@ -8,6 +8,7 @@ > #include <asm/asm-offsets.h> > #include <asm/page.h> > #include <asm/fpu.h> > +#include <asm/ftrace.h> > > #ifdef CONFIG_HWZOL > .macro push_zol > --- linux-next-20210917.orig/arch/nds32/kernel/ex-exit.S > +++ linux-next-20210917/arch/nds32/kernel/ex-exit.S > @@ -9,7 +9,7 @@ > #include <asm/thread_info.h> > #include <asm/current.h> > #include <asm/fpu.h> > - > +#include <asm/ftrace.h> > > > #ifdef CONFIG_HWZOL loop in Alan and KC.
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