Messages in this thread | | | Date | Fri, 11 Jul 2014 09:58:08 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH 1/4] perf: add ability to sample machine state on interrupt |
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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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