On Thu, 2016-02-25 at 14:52 +0100, Torsten Duwe wrote:
> On Thu, Feb 25, 2016 at 01:28:27AM +1100, Michael Ellerman wrote:
> > @@ -450,17 +448,44 @@ static unsigned long stub_for_addr(const Elf64_Shdr
> > *sechdrs,
> > return (unsigned long)[i];
> > }
> >
> > +#ifdef
On Thu, Feb 25, 2016 at 01:28:27AM +1100, Michael Ellerman wrote:
> @@ -450,17 +448,44 @@ static unsigned long stub_for_addr(const Elf64_Shdr
> *sechdrs,
> return (unsigned long)[i];
> }
>
> +#ifdef CC_USING_MPROFILE_KERNEL
> +static int is_early_mcount_callsite(u32 *instruction)
> +{
>
On Thu, 2016-02-25 at 11:28 +1100, Balbir Singh wrote:
> On 25/02/16 01:28, Michael Ellerman wrote:
> > @@ -300,8 +298,34 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned
> > long addr)
> > * The load offset is different depending on the ABI. For simplicity
> > * just mask it out
On 25/02/16 01:28, Michael Ellerman wrote:
> From: Torsten Duwe
>
> The gcc switch -mprofile-kernel, available for ppc64 on gcc > 4.8.5,
> allows to call _mcount very early in the function, which low-level
> ASM code and code patching functions need to consider.
> Especially the
From: Torsten Duwe
The gcc switch -mprofile-kernel, available for ppc64 on gcc > 4.8.5,
allows to call _mcount very early in the function, which low-level
ASM code and code patching functions need to consider.
Especially the link register and the parameter registers are still
alive