Messages in this thread | | | Date | Fri, 29 May 2015 10:06:31 -0700 | From | Jacob Pan <> | Subject | Re: [PATCH] perf/x86/intel/rapl: Add support for Knights Landing (KNL) |
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On Tue, 26 May 2015 11:47:39 -0700 Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> 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. > Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com> > Signed-off-by: Dasaratharaman Chandramouli > <dasaratharaman.chandramouli@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); > + rapl_cntr_mask = RAPL_IDX_KNL; > + rapl_pmu_events_group.attrs = rapl_events_knl_attr; > > default: > /* unsupported */
[Jacob Pan]
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