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.

SNIP

>  };
>  
>  /*
> @@ -334,6 +335,15 @@ struct perf_event_attr {
>  
>       /* Align to u64. */
>       __u32   __reserved_2;
> +     /*
> +      * Defines set of user regs to dump on samples.
                          ^^ interrupt 

jirka
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