From: Joerg Roedel <jroedel@suse.de> Building a kernel for the CSKY architecture with CONFIG_FRAME_POINTER set requires a gcc supporting the non-upstream '-mbacktrace' option. Check for the '-mbacktrace' option before enabling CONFIG_FRAMEPOINTER and fix building CSKY with an upstream gcc compiler. Signed-off-by: Joerg Roedel <jroedel@suse.de> --- arch/csky/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index bd31ab12f77d..1622e1c56026 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -8,7 +8,7 @@ config CSKY select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2 - select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 + select ARCH_WANT_FRAME_POINTERS if (!CPU_CK610 && STACKTRACE_SUPPORT) select COMMON_CLK select CLKSRC_MMIO select CSKY_MPINTC if CPU_CK860 @@ -125,7 +125,7 @@ config MMU def_bool y config STACKTRACE_SUPPORT - def_bool y + def_bool $(success,echo 'int foo(void) { return 0; }' | $(CC) -mbacktrace -x c - -c -o /dev/null) config TIME_LOW_RES def_bool y -- 2.27.0
On Tue, Jul 21, 2020 at 01:23:14PM +0200, Joerg Roedel wrote: > From: Joerg Roedel <jroedel@suse.de> > > Building a kernel for the CSKY architecture with CONFIG_FRAME_POINTER > set requires a gcc supporting the non-upstream '-mbacktrace' option. > Check for the '-mbacktrace' option before enabling CONFIG_FRAMEPOINTER > and fix building CSKY with an upstream gcc compiler. > > Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> > --- > arch/csky/Kconfig | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig > index bd31ab12f77d..1622e1c56026 100644 > --- a/arch/csky/Kconfig > +++ b/arch/csky/Kconfig > @@ -8,7 +8,7 @@ config CSKY > select ARCH_HAS_SYNC_DMA_FOR_DEVICE > select ARCH_USE_BUILTIN_BSWAP > select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2 > - select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 > + select ARCH_WANT_FRAME_POINTERS if (!CPU_CK610 && STACKTRACE_SUPPORT) > select COMMON_CLK > select CLKSRC_MMIO > select CSKY_MPINTC if CPU_CK860 > @@ -125,7 +125,7 @@ config MMU > def_bool y > > config STACKTRACE_SUPPORT > - def_bool y > + def_bool $(success,echo 'int foo(void) { return 0; }' | $(CC) -mbacktrace -x c - -c -o /dev/null) > > config TIME_LOW_RES > def_bool y > -- > 2.27.0 >
Thx Joerg & Guenter, Cool work! Acked-by: Guo Ren <guoren@kernel.org> Approve to next branch. On Tue, Jul 21, 2020 at 9:21 PM Guenter Roeck <linux@roeck-us.net> wrote: > > On Tue, Jul 21, 2020 at 01:23:14PM +0200, Joerg Roedel wrote: > > From: Joerg Roedel <jroedel@suse.de> > > > > Building a kernel for the CSKY architecture with CONFIG_FRAME_POINTER > > set requires a gcc supporting the non-upstream '-mbacktrace' option. > > Check for the '-mbacktrace' option before enabling CONFIG_FRAMEPOINTER > > and fix building CSKY with an upstream gcc compiler. > > > > Signed-off-by: Joerg Roedel <jroedel@suse.de> > > Reviewed-by: Guenter Roeck <linux@roeck-us.net> > Tested-by: Guenter Roeck <linux@roeck-us.net> > > > --- > > arch/csky/Kconfig | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig > > index bd31ab12f77d..1622e1c56026 100644 > > --- a/arch/csky/Kconfig > > +++ b/arch/csky/Kconfig > > @@ -8,7 +8,7 @@ config CSKY > > select ARCH_HAS_SYNC_DMA_FOR_DEVICE > > select ARCH_USE_BUILTIN_BSWAP > > select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2 > > - select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 > > + select ARCH_WANT_FRAME_POINTERS if (!CPU_CK610 && STACKTRACE_SUPPORT) > > select COMMON_CLK > > select CLKSRC_MMIO > > select CSKY_MPINTC if CPU_CK860 > > @@ -125,7 +125,7 @@ config MMU > > def_bool y > > > > config STACKTRACE_SUPPORT > > - def_bool y > > + def_bool $(success,echo 'int foo(void) { return 0; }' | $(CC) -mbacktrace -x c - -c -o /dev/null) > > > > config TIME_LOW_RES > > def_bool y > > -- > > 2.27.0 > > -- Best Regards Guo Ren ML: https://lore.kernel.org/linux-csky/