ARM: ftrace: allow building without frame pointers
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From: Steven Rostedt on 13 Mar 2010 12:40 On Sat, 2010-03-13 at 12:19 +0530, Rabin Vincent wrote: > With a new enough GCC, ARM function tracing can be supported without the > need for frame pointers. This is essential for Thumb-2 support, since > frame pointers aren't available then. > > Signed-off-by: Rabin Vincent <rabin(a)rab.in> > diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig > index 13e13d4..e10519f 100644 > --- a/kernel/trace/Kconfig > +++ b/kernel/trace/Kconfig > @@ -124,7 +124,7 @@ if FTRACE > config FUNCTION_TRACER > bool "Kernel Function Tracer" > depends on HAVE_FUNCTION_TRACER > - select FRAME_POINTER > + select FRAME_POINTER if (!ARM_UNWIND) I'm fine with this if the ARM maintainers are. Acked-by: Steven Rostedt <rostedt(a)goodmis.org> -- Steve > select KALLSYMS > select GENERIC_TRACER > select CONTEXT_SWITCH_TRACER -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Steven Rostedt on 14 Mar 2010 13:00 On Sat, 2010-03-13 at 12:19 +0530, Rabin Vincent wrote: > With a new enough GCC, ARM function tracing can be supported without the > need for frame pointers. This is essential for Thumb-2 support, since > frame pointers aren't available then. > > Signed-off-by: Rabin Vincent <rabin(a)rab.in> > diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig > index 13e13d4..e10519f 100644 > --- a/kernel/trace/Kconfig > +++ b/kernel/trace/Kconfig > @@ -124,7 +124,7 @@ if FTRACE > config FUNCTION_TRACER > bool "Kernel Function Tracer" > depends on HAVE_FUNCTION_TRACER > - select FRAME_POINTER > + select FRAME_POINTER if (!ARM_UNWIND) I'm fine with this if the ARM maintainers are. Acked-by: Steven Rostedt <rostedt(a)goodmis.org> -- Steve > select KALLSYMS > select GENERIC_TRACER > select CONTEXT_SWITCH_TRACER -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Catalin Marinas on 17 Mar 2010 12:20
On Sun, 2010-03-14 at 16:56 +0000, Steven Rostedt wrote: > On Sat, 2010-03-13 at 12:19 +0530, Rabin Vincent wrote: > > With a new enough GCC, ARM function tracing can be supported without the > > need for frame pointers. This is essential for Thumb-2 support, since > > frame pointers aren't available then. > > > > Signed-off-by: Rabin Vincent <rabin(a)rab.in> > > > diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig > > index 13e13d4..e10519f 100644 > > --- a/kernel/trace/Kconfig > > +++ b/kernel/trace/Kconfig > > @@ -124,7 +124,7 @@ if FTRACE > > config FUNCTION_TRACER > > bool "Kernel Function Tracer" > > depends on HAVE_FUNCTION_TRACER > > - select FRAME_POINTER > > + select FRAME_POINTER if (!ARM_UNWIND) > > I'm fine with this if the ARM maintainers are. > > Acked-by: Steven Rostedt <rostedt(a)goodmis.org> I think we did this already in other places, so: Acked-by: Catalin Marinas <catalin.marinas(a)arm.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |