提交 3a2a7797 编写于 作者: D Dasaratharaman Chandramouli 提交者: Ingo Molnar

perf/x86/intel/rapl: Add support for Knights Landing (KNL)

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.
Signed-off-by: NDasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: NStephane Eranian <eranian@google.com>
Acked-by: NJacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jacob Pan Jun <jacob.jun.pan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nikhil Rao <nikhil.rao@intel.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/aa63b4a3af3160152fea1a10c807f4200527280c.1432665809.git.dasaratharaman.chandramouli@intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
上级 2a742ced
......@@ -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
......@@ -486,6 +490,18 @@ 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 */
......
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