On Fri, May 29, 2015 at 4:55 AM, Peter Zijlstra <pet...@infradead.org> wrote:
>
> On Tue, May 26, 2015 at 11:47:39AM -0700, Dasaratharaman Chandramouli wrote:
> > Knights Landing DRAM RAPL supports PKG and DRAM RAPL domains.
> > DRAM RAPL has a different fixed energy unit (2^-16J) similar to
> > that of HSW.
> >
>
> Please also Cc the author of the code you're patching.
>
> Cc: Stephane Eranian <eran...@google.com>
> > Signed-off-by: Dasaratharaman Chandramouli
> > <dasaratharaman.chandramo...@intel.com>
> > ---
> > arch/x86/kernel/cpu/perf_event_intel_rapl.c | 20 ++++++++++++++++++++
> > 1 file changed, 20 insertions(+)
> >
> > diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
> > b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
> > index 999289b9..96633fb 100644
> > --- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
> > +++ b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
> > @@ -86,6 +86,10 @@ static const char *rapl_domain_names[NR_RAPL_DOMAINS]
> > __initconst = {
> > 1<<RAPL_IDX_RAM_NRG_STAT|\
> > 1<<RAPL_IDX_PP1_NRG_STAT)
> >
> > +/* Knights Landing has PKG, RAM */
> > +#define RAPL_IDX_KNL (1<<RAPL_IDX_PKG_NRG_STAT|\
> > + 1<<RAPL_IDX_RAM_NRG_STAT)
> > +
> > /*
> > * event code: LSB 8 bits, passed in attr->config
> > * any other bit is reserved
> > @@ -487,6 +491,18 @@ static struct attribute *rapl_events_hsw_attr[] = {
> > NULL,
> > };
> >
> > +static struct attribute *rapl_events_knl_attr[] = {
> > + EVENT_PTR(rapl_pkg),
> > + EVENT_PTR(rapl_ram),
> > +
> > + EVENT_PTR(rapl_pkg_unit),
> > + EVENT_PTR(rapl_ram_unit),
> > +
> > + EVENT_PTR(rapl_pkg_scale),
> > + EVENT_PTR(rapl_ram_scale),
> > + NULL,
> > +};
> > +
> > static struct attribute_group rapl_pmu_events_group = {
> > .name = "events",
> > .attrs = NULL, /* patched at runtime */
> > @@ -730,6 +746,10 @@ static int __init rapl_pmu_init(void)
> > rapl_cntr_mask = RAPL_IDX_SRV;
> > rapl_pmu_events_group.attrs = rapl_events_srv_attr;
> > break;
> > + case 87: /* Knights Landing */
> > + rapl_add_quirk(rapl_hsw_server_quirk);
Does KNL also have different raw units for RAM requiring the use of the quirk?
>
> > + rapl_cntr_mask = RAPL_IDX_KNL;
> > + rapl_pmu_events_group.attrs = rapl_events_knl_attr;
>
> break;
>
> ?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
Please read the FAQ at http://www.tux.org/lkml/
