Re: [PATCHv5] arm: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS

2017-03-19 Thread Abel Vesa
On Sat, Mar 04, 2017 at 02:02:17PM +0100, Rabin Vincent wrote: > On Sat, Mar 04, 2017 at 12:51:12AM +, Abel Vesa wrote: > > diff --git a/arch/arm/kernel/entry-ftrace.S b/arch/arm/kernel/entry-ftrace.S > > index c73c403..93f9abb 100644 > > --- a/arch/arm/kernel/entry-ftrace.S > > +++ b/arch/arm/

Re: [PATCHv5] arm: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS

2017-03-04 Thread Rabin Vincent
On Sat, Mar 04, 2017 at 12:51:12AM +, Abel Vesa wrote: > diff --git a/arch/arm/kernel/entry-ftrace.S b/arch/arm/kernel/entry-ftrace.S > index c73c403..93f9abb 100644 > --- a/arch/arm/kernel/entry-ftrace.S > +++ b/arch/arm/kernel/entry-ftrace.S > @@ -92,12 +92,78 @@ > 2: mcount_exit > .endm

[PATCHv5] arm: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS

2017-03-03 Thread Abel Vesa
The DYNAMIC_FTRACE_WITH_REGS configuration makes it possible for a ftrace operation to specify if registers need to saved/restored by the ftrace handler. This is needed by kgraft and possibly other ftrace-based tools, and the ARM architecture is currently lacking this feature. It would also be the