Re: [PATCH 1/4] perf: add ability to sample machine state on interrupt

From: Jiri Olsa
Date: Fri Jul 11 2014 - 04:12:12 EST

On Wed, Jul 09, 2014 at 12:15:56AM +0200, Stephane Eranian wrote:
> Enable capture of interrupted machine state in each
> sample.
> Registers to sample are passed per event in the
> sample_regs_intr bitmask.
> To sample interrupt machine state, the
> PERF_SAMPLE_INTR_REGS must be passed in
> sample_type.
> The list of available registers is arch
> dependent and provided by asm/perf_regs.h
> Registers are laid out as u64 in the order
> of the bit order of sample_intr_regs.
^^^ sample_regs_intr

just crossed my ming we want to use 'kernel' here and call it 'sample_regs_kernel',
since we already have sample_regs_user. Also for events other than HW, the sample
does not happen in interrupt.. anyway:

Reviewed-by: Jiri Olsa <jolsa@xxxxxxxxxx>

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