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-rw-r--r--arch/x86/events/rapl.c598
1 files changed, 346 insertions, 252 deletions
diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c
index 8d98d468b976..043f0a0b1e00 100644
--- a/arch/x86/events/rapl.c
+++ b/arch/x86/events/rapl.c
@@ -39,6 +39,10 @@
* event: rapl_energy_psys
* perf code: 0x5
*
+ * core counter: consumption of a single physical core
+ * event: rapl_energy_core (power_core PMU)
+ * perf code: 0x1
+ *
* We manage those counters as free running (read-only). They may be
* use simultaneously by other tools, such as turbostat.
*
@@ -64,23 +68,28 @@
#include "perf_event.h"
#include "probe.h"
+MODULE_DESCRIPTION("Support Intel/AMD RAPL energy consumption counters");
MODULE_LICENSE("GPL");
/*
* RAPL energy status counters
*/
-enum perf_rapl_events {
+enum perf_rapl_pkg_events {
PERF_RAPL_PP0 = 0, /* all cores */
PERF_RAPL_PKG, /* entire package */
PERF_RAPL_RAM, /* DRAM */
PERF_RAPL_PP1, /* gpu */
PERF_RAPL_PSYS, /* psys */
- PERF_RAPL_MAX,
- NR_RAPL_DOMAINS = PERF_RAPL_MAX,
+ PERF_RAPL_PKG_EVENTS_MAX,
+ NR_RAPL_PKG_DOMAINS = PERF_RAPL_PKG_EVENTS_MAX,
};
-static const char *const rapl_domain_names[NR_RAPL_DOMAINS] __initconst = {
+#define PERF_RAPL_CORE 0 /* single core */
+#define PERF_RAPL_CORE_EVENTS_MAX 1
+#define NR_RAPL_CORE_DOMAINS PERF_RAPL_CORE_EVENTS_MAX
+
+static const char *const rapl_pkg_domain_names[NR_RAPL_PKG_DOMAINS] __initconst = {
"pp0-core",
"package",
"dram",
@@ -88,6 +97,8 @@ static const char *const rapl_domain_names[NR_RAPL_DOMAINS] __initconst = {
"psys",
};
+static const char *const rapl_core_domain_name __initconst = "core";
+
/*
* event code: LSB 8 bits, passed in attr->config
* any other bit is reserved
@@ -102,6 +113,19 @@ static struct perf_pmu_events_attr event_attr_##v = { \
.event_str = str, \
};
+/*
+ * RAPL Package energy counter scope:
+ * 1. AMD/HYGON platforms have a per-PKG package energy counter
+ * 2. For Intel platforms
+ * 2.1. CLX-AP is multi-die and its RAPL MSRs are die-scope
+ * 2.2. Other Intel platforms are single die systems so the scope can be
+ * considered as either pkg-scope or die-scope, and we are considering
+ * them as die-scope.
+ */
+#define rapl_pkg_pmu_is_pkg_scope() \
+ (boot_cpu_data.x86_vendor == X86_VENDOR_AMD || \
+ boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
+
struct rapl_pmu {
raw_spinlock_t lock;
int n_active;
@@ -114,8 +138,9 @@ struct rapl_pmu {
struct rapl_pmus {
struct pmu pmu;
- unsigned int maxdie;
- struct rapl_pmu *pmus[] __counted_by(maxdie);
+ unsigned int nr_rapl_pmu;
+ unsigned int cntr_mask;
+ struct rapl_pmu *rapl_pmu[] __counted_by(nr_rapl_pmu);
};
enum rapl_unit_quirk {
@@ -125,29 +150,43 @@ enum rapl_unit_quirk {
};
struct rapl_model {
- struct perf_msr *rapl_msrs;
- unsigned long events;
+ struct perf_msr *rapl_pkg_msrs;
+ struct perf_msr *rapl_core_msrs;
+ unsigned long pkg_events;
+ unsigned long core_events;
unsigned int msr_power_unit;
enum rapl_unit_quirk unit_quirk;
};
/* 1/2^hw_unit Joule */
-static int rapl_hw_unit[NR_RAPL_DOMAINS] __read_mostly;
-static struct rapl_pmus *rapl_pmus;
-static cpumask_t rapl_cpu_mask;
-static unsigned int rapl_cntr_mask;
+static int rapl_pkg_hw_unit[NR_RAPL_PKG_DOMAINS] __read_mostly;
+static int rapl_core_hw_unit __read_mostly;
+static struct rapl_pmus *rapl_pmus_pkg;
+static struct rapl_pmus *rapl_pmus_core;
static u64 rapl_timer_ms;
-static struct perf_msr *rapl_msrs;
+static struct rapl_model *rapl_model;
-static inline struct rapl_pmu *cpu_to_rapl_pmu(unsigned int cpu)
+/*
+ * Helper function to get the correct topology id according to the
+ * RAPL PMU scope.
+ */
+static inline unsigned int get_rapl_pmu_idx(int cpu, int scope)
{
- unsigned int dieid = topology_logical_die_id(cpu);
-
/*
- * The unsigned check also catches the '-1' return value for non
- * existent mappings in the topology map.
+ * Returns unsigned int, which converts the '-1' return value
+ * (for non-existent mappings in topology map) to UINT_MAX, so
+ * the error check in the caller is simplified.
*/
- return dieid < rapl_pmus->maxdie ? rapl_pmus->pmus[dieid] : NULL;
+ switch (scope) {
+ case PERF_PMU_SCOPE_PKG:
+ return topology_logical_package_id(cpu);
+ case PERF_PMU_SCOPE_DIE:
+ return topology_logical_die_id(cpu);
+ case PERF_PMU_SCOPE_CORE:
+ return topology_logical_core_id(cpu);
+ default:
+ return -EINVAL;
+ }
}
static inline u64 rapl_read_counter(struct perf_event *event)
@@ -157,19 +196,20 @@ static inline u64 rapl_read_counter(struct perf_event *event)
return raw;
}
-static inline u64 rapl_scale(u64 v, int cfg)
+static inline u64 rapl_scale(u64 v, struct perf_event *event)
{
- if (cfg > NR_RAPL_DOMAINS) {
- pr_warn("Invalid domain %d, failed to scale data\n", cfg);
- return v;
- }
+ int hw_unit = rapl_pkg_hw_unit[event->hw.config - 1];
+
+ if (event->pmu->scope == PERF_PMU_SCOPE_CORE)
+ hw_unit = rapl_core_hw_unit;
+
/*
* scale delta to smallest unit (1/2^32)
* users must then scale back: count * 1/(1e9*2^32) to get Joules
* or use ldexp(count, -32).
* Watts = Joules/Time delta
*/
- return v << (32 - rapl_hw_unit[cfg - 1]);
+ return v << (32 - hw_unit);
}
static u64 rapl_event_update(struct perf_event *event)
@@ -196,7 +236,7 @@ static u64 rapl_event_update(struct perf_event *event)
delta = (new_raw_count << shift) - (prev_raw_count << shift);
delta >>= shift;
- sdelta = rapl_scale(delta, event->hw.config);
+ sdelta = rapl_scale(delta, event);
local64_add(sdelta, &event->count);
@@ -211,34 +251,34 @@ static void rapl_start_hrtimer(struct rapl_pmu *pmu)
static enum hrtimer_restart rapl_hrtimer_handle(struct hrtimer *hrtimer)
{
- struct rapl_pmu *pmu = container_of(hrtimer, struct rapl_pmu, hrtimer);
+ struct rapl_pmu *rapl_pmu = container_of(hrtimer, struct rapl_pmu, hrtimer);
struct perf_event *event;
unsigned long flags;
- if (!pmu->n_active)
+ if (!rapl_pmu->n_active)
return HRTIMER_NORESTART;
- raw_spin_lock_irqsave(&pmu->lock, flags);
+ raw_spin_lock_irqsave(&rapl_pmu->lock, flags);
- list_for_each_entry(event, &pmu->active_list, active_entry)
+ list_for_each_entry(event, &rapl_pmu->active_list, active_entry)
rapl_event_update(event);
- raw_spin_unlock_irqrestore(&pmu->lock, flags);
+ raw_spin_unlock_irqrestore(&rapl_pmu->lock, flags);
- hrtimer_forward_now(hrtimer, pmu->timer_interval);
+ hrtimer_forward_now(hrtimer, rapl_pmu->timer_interval);
return HRTIMER_RESTART;
}
-static void rapl_hrtimer_init(struct rapl_pmu *pmu)
+static void rapl_hrtimer_init(struct rapl_pmu *rapl_pmu)
{
- struct hrtimer *hr = &pmu->hrtimer;
+ struct hrtimer *hr = &rapl_pmu->hrtimer;
hrtimer_init(hr, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
hr->function = rapl_hrtimer_handle;
}
-static void __rapl_pmu_event_start(struct rapl_pmu *pmu,
+static void __rapl_pmu_event_start(struct rapl_pmu *rapl_pmu,
struct perf_event *event)
{
if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED)))
@@ -246,39 +286,39 @@ static void __rapl_pmu_event_start(struct rapl_pmu *pmu,
event->hw.state = 0;
- list_add_tail(&event->active_entry, &pmu->active_list);
+ list_add_tail(&event->active_entry, &rapl_pmu->active_list);
local64_set(&event->hw.prev_count, rapl_read_counter(event));
- pmu->n_active++;
- if (pmu->n_active == 1)
- rapl_start_hrtimer(pmu);
+ rapl_pmu->n_active++;
+ if (rapl_pmu->n_active == 1)
+ rapl_start_hrtimer(rapl_pmu);
}
static void rapl_pmu_event_start(struct perf_event *event, int mode)
{
- struct rapl_pmu *pmu = event->pmu_private;
+ struct rapl_pmu *rapl_pmu = event->pmu_private;
unsigned long flags;
- raw_spin_lock_irqsave(&pmu->lock, flags);
- __rapl_pmu_event_start(pmu, event);
- raw_spin_unlock_irqrestore(&pmu->lock, flags);
+ raw_spin_lock_irqsave(&rapl_pmu->lock, flags);
+ __rapl_pmu_event_start(rapl_pmu, event);
+ raw_spin_unlock_irqrestore(&rapl_pmu->lock, flags);
}
static void rapl_pmu_event_stop(struct perf_event *event, int mode)
{
- struct rapl_pmu *pmu = event->pmu_private;
+ struct rapl_pmu *rapl_pmu = event->pmu_private;
struct hw_perf_event *hwc = &event->hw;
unsigned long flags;
- raw_spin_lock_irqsave(&pmu->lock, flags);
+ raw_spin_lock_irqsave(&rapl_pmu->lock, flags);
/* mark event as deactivated and stopped */
if (!(hwc->state & PERF_HES_STOPPED)) {
- WARN_ON_ONCE(pmu->n_active <= 0);
- pmu->n_active--;
- if (pmu->n_active == 0)
- hrtimer_cancel(&pmu->hrtimer);
+ WARN_ON_ONCE(rapl_pmu->n_active <= 0);
+ rapl_pmu->n_active--;
+ if (rapl_pmu->n_active == 0)
+ hrtimer_cancel(&rapl_pmu->hrtimer);
list_del(&event->active_entry);
@@ -296,23 +336,23 @@ static void rapl_pmu_event_stop(struct perf_event *event, int mode)
hwc->state |= PERF_HES_UPTODATE;
}
- raw_spin_unlock_irqrestore(&pmu->lock, flags);
+ raw_spin_unlock_irqrestore(&rapl_pmu->lock, flags);
}
static int rapl_pmu_event_add(struct perf_event *event, int mode)
{
- struct rapl_pmu *pmu = event->pmu_private;
+ struct rapl_pmu *rapl_pmu = event->pmu_private;
struct hw_perf_event *hwc = &event->hw;
unsigned long flags;
- raw_spin_lock_irqsave(&pmu->lock, flags);
+ raw_spin_lock_irqsave(&rapl_pmu->lock, flags);
hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
if (mode & PERF_EF_START)
- __rapl_pmu_event_start(pmu, event);
+ __rapl_pmu_event_start(rapl_pmu, event);
- raw_spin_unlock_irqrestore(&pmu->lock, flags);
+ raw_spin_unlock_irqrestore(&rapl_pmu->lock, flags);
return 0;
}
@@ -325,13 +365,19 @@ static void rapl_pmu_event_del(struct perf_event *event, int flags)
static int rapl_pmu_event_init(struct perf_event *event)
{
u64 cfg = event->attr.config & RAPL_EVENT_MASK;
- int bit, ret = 0;
- struct rapl_pmu *pmu;
+ int bit, rapl_pmus_scope, ret = 0;
+ struct rapl_pmu *rapl_pmu;
+ unsigned int rapl_pmu_idx;
+ struct rapl_pmus *rapl_pmus;
/* only look at RAPL events */
- if (event->attr.type != rapl_pmus->pmu.type)
+ if (event->attr.type != event->pmu->type)
return -ENOENT;
+ /* unsupported modes and filters */
+ if (event->attr.sample_period) /* no sampling */
+ return -EINVAL;
+
/* check only supported bits are set */
if (event->attr.config & ~RAPL_EVENT_MASK)
return -EINVAL;
@@ -339,29 +385,41 @@ static int rapl_pmu_event_init(struct perf_event *event)
if (event->cpu < 0)
return -EINVAL;
- event->event_caps |= PERF_EV_CAP_READ_ACTIVE_PKG;
-
- if (!cfg || cfg >= NR_RAPL_DOMAINS + 1)
+ rapl_pmus = container_of(event->pmu, struct rapl_pmus, pmu);
+ if (!rapl_pmus)
+ return -EINVAL;
+ rapl_pmus_scope = rapl_pmus->pmu.scope;
+
+ if (rapl_pmus_scope == PERF_PMU_SCOPE_PKG || rapl_pmus_scope == PERF_PMU_SCOPE_DIE) {
+ cfg = array_index_nospec((long)cfg, NR_RAPL_PKG_DOMAINS + 1);
+ if (!cfg || cfg >= NR_RAPL_PKG_DOMAINS + 1)
+ return -EINVAL;
+
+ bit = cfg - 1;
+ event->hw.event_base = rapl_model->rapl_pkg_msrs[bit].msr;
+ } else if (rapl_pmus_scope == PERF_PMU_SCOPE_CORE) {
+ cfg = array_index_nospec((long)cfg, NR_RAPL_CORE_DOMAINS + 1);
+ if (!cfg || cfg >= NR_RAPL_PKG_DOMAINS + 1)
+ return -EINVAL;
+
+ bit = cfg - 1;
+ event->hw.event_base = rapl_model->rapl_core_msrs[bit].msr;
+ } else
return -EINVAL;
-
- cfg = array_index_nospec((long)cfg, NR_RAPL_DOMAINS + 1);
- bit = cfg - 1;
/* check event supported */
- if (!(rapl_cntr_mask & (1 << bit)))
+ if (!(rapl_pmus->cntr_mask & (1 << bit)))
return -EINVAL;
- /* unsupported modes and filters */
- if (event->attr.sample_period) /* no sampling */
+ rapl_pmu_idx = get_rapl_pmu_idx(event->cpu, rapl_pmus_scope);
+ if (rapl_pmu_idx >= rapl_pmus->nr_rapl_pmu)
return -EINVAL;
-
/* must be done before validate_group */
- pmu = cpu_to_rapl_pmu(event->cpu);
- if (!pmu)
+ rapl_pmu = rapl_pmus->rapl_pmu[rapl_pmu_idx];
+ if (!rapl_pmu)
return -EINVAL;
- event->cpu = pmu->cpu;
- event->pmu_private = pmu;
- event->hw.event_base = rapl_msrs[bit].msr;
+
+ event->pmu_private = rapl_pmu;
event->hw.config = cfg;
event->hw.idx = bit;
@@ -373,34 +431,19 @@ static void rapl_pmu_event_read(struct perf_event *event)
rapl_event_update(event);
}
-static ssize_t rapl_get_attr_cpumask(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return cpumap_print_to_pagebuf(true, buf, &rapl_cpu_mask);
-}
-
-static DEVICE_ATTR(cpumask, S_IRUGO, rapl_get_attr_cpumask, NULL);
-
-static struct attribute *rapl_pmu_attrs[] = {
- &dev_attr_cpumask.attr,
- NULL,
-};
-
-static struct attribute_group rapl_pmu_attr_group = {
- .attrs = rapl_pmu_attrs,
-};
-
RAPL_EVENT_ATTR_STR(energy-cores, rapl_cores, "event=0x01");
RAPL_EVENT_ATTR_STR(energy-pkg , rapl_pkg, "event=0x02");
RAPL_EVENT_ATTR_STR(energy-ram , rapl_ram, "event=0x03");
RAPL_EVENT_ATTR_STR(energy-gpu , rapl_gpu, "event=0x04");
RAPL_EVENT_ATTR_STR(energy-psys, rapl_psys, "event=0x05");
+RAPL_EVENT_ATTR_STR(energy-core, rapl_core, "event=0x01");
RAPL_EVENT_ATTR_STR(energy-cores.unit, rapl_cores_unit, "Joules");
RAPL_EVENT_ATTR_STR(energy-pkg.unit , rapl_pkg_unit, "Joules");
RAPL_EVENT_ATTR_STR(energy-ram.unit , rapl_ram_unit, "Joules");
RAPL_EVENT_ATTR_STR(energy-gpu.unit , rapl_gpu_unit, "Joules");
RAPL_EVENT_ATTR_STR(energy-psys.unit, rapl_psys_unit, "Joules");
+RAPL_EVENT_ATTR_STR(energy-core.unit, rapl_core_unit, "Joules");
/*
* we compute in 0.23 nJ increments regardless of MSR
@@ -410,6 +453,7 @@ RAPL_EVENT_ATTR_STR(energy-pkg.scale, rapl_pkg_scale, "2.3283064365386962890
RAPL_EVENT_ATTR_STR(energy-ram.scale, rapl_ram_scale, "2.3283064365386962890625e-10");
RAPL_EVENT_ATTR_STR(energy-gpu.scale, rapl_gpu_scale, "2.3283064365386962890625e-10");
RAPL_EVENT_ATTR_STR(energy-psys.scale, rapl_psys_scale, "2.3283064365386962890625e-10");
+RAPL_EVENT_ATTR_STR(energy-core.scale, rapl_core_scale, "2.3283064365386962890625e-10");
/*
* There are no default events, but we need to create
@@ -437,7 +481,12 @@ static struct attribute_group rapl_pmu_format_group = {
};
static const struct attribute_group *rapl_attr_groups[] = {
- &rapl_pmu_attr_group,
+ &rapl_pmu_format_group,
+ &rapl_pmu_events_group,
+ NULL,
+};
+
+static const struct attribute_group *rapl_core_attr_groups[] = {
&rapl_pmu_format_group,
&rapl_pmu_events_group,
NULL,
@@ -503,6 +552,18 @@ static struct attribute_group rapl_events_psys_group = {
.attrs = rapl_events_psys,
};
+static struct attribute *rapl_events_core[] = {
+ EVENT_PTR(rapl_core),
+ EVENT_PTR(rapl_core_unit),
+ EVENT_PTR(rapl_core_scale),
+ NULL,
+};
+
+static struct attribute_group rapl_events_core_group = {
+ .name = "events",
+ .attrs = rapl_events_core,
+};
+
static bool test_msr(int idx, void *data)
{
return test_bit(idx, (unsigned long *) data);
@@ -528,11 +589,11 @@ static struct perf_msr intel_rapl_spr_msrs[] = {
};
/*
- * Force to PERF_RAPL_MAX size due to:
- * - perf_msr_probe(PERF_RAPL_MAX)
+ * Force to PERF_RAPL_PKG_EVENTS_MAX size due to:
+ * - perf_msr_probe(PERF_RAPL_PKG_EVENTS_MAX)
* - want to use same event codes across both architectures
*/
-static struct perf_msr amd_rapl_msrs[] = {
+static struct perf_msr amd_rapl_pkg_msrs[] = {
[PERF_RAPL_PP0] = { 0, &rapl_events_cores_group, NULL, false, 0 },
[PERF_RAPL_PKG] = { MSR_AMD_PKG_ENERGY_STATUS, &rapl_events_pkg_group, test_msr, false, RAPL_MSR_MASK },
[PERF_RAPL_RAM] = { 0, &rapl_events_ram_group, NULL, false, 0 },
@@ -540,72 +601,25 @@ static struct perf_msr amd_rapl_msrs[] = {
[PERF_RAPL_PSYS] = { 0, &rapl_events_psys_group, NULL, false, 0 },
};
-static int rapl_cpu_offline(unsigned int cpu)
-{
- struct rapl_pmu *pmu = cpu_to_rapl_pmu(cpu);
- int target;
-
- /* Check if exiting cpu is used for collecting rapl events */
- if (!cpumask_test_and_clear_cpu(cpu, &rapl_cpu_mask))
- return 0;
-
- pmu->cpu = -1;
- /* Find a new cpu to collect rapl events */
- target = cpumask_any_but(topology_die_cpumask(cpu), cpu);
-
- /* Migrate rapl events to the new target */
- if (target < nr_cpu_ids) {
- cpumask_set_cpu(target, &rapl_cpu_mask);
- pmu->cpu = target;
- perf_pmu_migrate_context(pmu->pmu, cpu, target);
- }
- return 0;
-}
-
-static int rapl_cpu_online(unsigned int cpu)
-{
- struct rapl_pmu *pmu = cpu_to_rapl_pmu(cpu);
- int target;
-
- if (!pmu) {
- pmu = kzalloc_node(sizeof(*pmu), GFP_KERNEL, cpu_to_node(cpu));
- if (!pmu)
- return -ENOMEM;
-
- raw_spin_lock_init(&pmu->lock);
- INIT_LIST_HEAD(&pmu->active_list);
- pmu->pmu = &rapl_pmus->pmu;
- pmu->timer_interval = ms_to_ktime(rapl_timer_ms);
- rapl_hrtimer_init(pmu);
-
- rapl_pmus->pmus[topology_logical_die_id(cpu)] = pmu;
- }
-
- /*
- * Check if there is an online cpu in the package which collects rapl
- * events already.
- */
- target = cpumask_any_and(&rapl_cpu_mask, topology_die_cpumask(cpu));
- if (target < nr_cpu_ids)
- return 0;
-
- cpumask_set_cpu(cpu, &rapl_cpu_mask);
- pmu->cpu = cpu;
- return 0;
-}
+static struct perf_msr amd_rapl_core_msrs[] = {
+ [PERF_RAPL_CORE] = { MSR_AMD_CORE_ENERGY_STATUS, &rapl_events_core_group,
+ test_msr, false, RAPL_MSR_MASK },
+};
-static int rapl_check_hw_unit(struct rapl_model *rm)
+static int rapl_check_hw_unit(void)
{
u64 msr_rapl_power_unit_bits;
int i;
/* protect rdmsrl() to handle virtualization */
- if (rdmsrl_safe(rm->msr_power_unit, &msr_rapl_power_unit_bits))
+ if (rdmsrl_safe(rapl_model->msr_power_unit, &msr_rapl_power_unit_bits))
return -1;
- for (i = 0; i < NR_RAPL_DOMAINS; i++)
- rapl_hw_unit[i] = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
+ for (i = 0; i < NR_RAPL_PKG_DOMAINS; i++)
+ rapl_pkg_hw_unit[i] = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
+
+ rapl_core_hw_unit = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
- switch (rm->unit_quirk) {
+ switch (rapl_model->unit_quirk) {
/*
* DRAM domain on HSW server and KNL has fixed energy unit which can be
* different than the unit from power unit MSR. See
@@ -613,17 +627,16 @@ static int rapl_check_hw_unit(struct rapl_model *rm)
* of 2. Datasheet, September 2014, Reference Number: 330784-001 "
*/
case RAPL_UNIT_QUIRK_INTEL_HSW:
- rapl_hw_unit[PERF_RAPL_RAM] = 16;
+ rapl_pkg_hw_unit[PERF_RAPL_RAM] = 16;
break;
/* SPR uses a fixed energy unit for Psys domain. */
case RAPL_UNIT_QUIRK_INTEL_SPR:
- rapl_hw_unit[PERF_RAPL_PSYS] = 0;
+ rapl_pkg_hw_unit[PERF_RAPL_PSYS] = 0;
break;
default:
break;
}
-
/*
* Calculate the timer rate:
* Use reference of 200W for scaling the timeout to avoid counter
@@ -632,9 +645,9 @@ static int rapl_check_hw_unit(struct rapl_model *rm)
* if hw unit is 32, then we use 2 ms 1/200/2
*/
rapl_timer_ms = 2;
- if (rapl_hw_unit[0] < 32) {
+ if (rapl_pkg_hw_unit[0] < 32) {
rapl_timer_ms = (1000 / (2 * 100));
- rapl_timer_ms *= (1ULL << (32 - rapl_hw_unit[0] - 1));
+ rapl_timer_ms *= (1ULL << (32 - rapl_pkg_hw_unit[0] - 1));
}
return 0;
}
@@ -642,24 +655,32 @@ static int rapl_check_hw_unit(struct rapl_model *rm)
static void __init rapl_advertise(void)
{
int i;
+ int num_counters = hweight32(rapl_pmus_pkg->cntr_mask);
+
+ if (rapl_pmus_core)
+ num_counters += hweight32(rapl_pmus_core->cntr_mask);
pr_info("API unit is 2^-32 Joules, %d fixed counters, %llu ms ovfl timer\n",
- hweight32(rapl_cntr_mask), rapl_timer_ms);
+ num_counters, rapl_timer_ms);
- for (i = 0; i < NR_RAPL_DOMAINS; i++) {
- if (rapl_cntr_mask & (1 << i)) {
+ for (i = 0; i < NR_RAPL_PKG_DOMAINS; i++) {
+ if (rapl_pmus_pkg->cntr_mask & (1 << i)) {
pr_info("hw unit of domain %s 2^-%d Joules\n",
- rapl_domain_names[i], rapl_hw_unit[i]);
+ rapl_pkg_domain_names[i], rapl_pkg_hw_unit[i]);
}
}
+
+ if (rapl_pmus_core && (rapl_pmus_core->cntr_mask & (1 << PERF_RAPL_CORE)))
+ pr_info("hw unit of domain %s 2^-%d Joules\n",
+ rapl_core_domain_name, rapl_core_hw_unit);
}
-static void cleanup_rapl_pmus(void)
+static void cleanup_rapl_pmus(struct rapl_pmus *rapl_pmus)
{
int i;
- for (i = 0; i < rapl_pmus->maxdie; i++)
- kfree(rapl_pmus->pmus[i]);
+ for (i = 0; i < rapl_pmus->nr_rapl_pmu; i++)
+ kfree(rapl_pmus->rapl_pmu[i]);
kfree(rapl_pmus);
}
@@ -672,17 +693,62 @@ static const struct attribute_group *rapl_attr_update[] = {
NULL,
};
-static int __init init_rapl_pmus(void)
+static const struct attribute_group *rapl_core_attr_update[] = {
+ &rapl_events_core_group,
+ NULL,
+};
+
+static int __init init_rapl_pmu(struct rapl_pmus *rapl_pmus)
+{
+ struct rapl_pmu *rapl_pmu;
+ int idx;
+
+ for (idx = 0; idx < rapl_pmus->nr_rapl_pmu; idx++) {
+ rapl_pmu = kzalloc(sizeof(*rapl_pmu), GFP_KERNEL);
+ if (!rapl_pmu)
+ goto free;
+
+ raw_spin_lock_init(&rapl_pmu->lock);
+ INIT_LIST_HEAD(&rapl_pmu->active_list);
+ rapl_pmu->pmu = &rapl_pmus->pmu;
+ rapl_pmu->timer_interval = ms_to_ktime(rapl_timer_ms);
+ rapl_hrtimer_init(rapl_pmu);
+
+ rapl_pmus->rapl_pmu[idx] = rapl_pmu;
+ }
+
+ return 0;
+free:
+ for (; idx > 0; idx--)
+ kfree(rapl_pmus->rapl_pmu[idx - 1]);
+ return -ENOMEM;
+}
+
+static int __init init_rapl_pmus(struct rapl_pmus **rapl_pmus_ptr, int rapl_pmu_scope,
+ const struct attribute_group **rapl_attr_groups,
+ const struct attribute_group **rapl_attr_update)
{
- int maxdie = topology_max_packages() * topology_max_die_per_package();
- size_t size;
+ int nr_rapl_pmu = topology_max_packages();
+ struct rapl_pmus *rapl_pmus;
+ int ret;
+
+ /*
+ * rapl_pmu_scope must be either PKG, DIE or CORE
+ */
+ if (rapl_pmu_scope == PERF_PMU_SCOPE_DIE)
+ nr_rapl_pmu *= topology_max_dies_per_package();
+ else if (rapl_pmu_scope == PERF_PMU_SCOPE_CORE)
+ nr_rapl_pmu *= topology_num_cores_per_package();
+ else if (rapl_pmu_scope != PERF_PMU_SCOPE_PKG)
+ return -EINVAL;
- size = sizeof(*rapl_pmus) + maxdie * sizeof(struct rapl_pmu *);
- rapl_pmus = kzalloc(size, GFP_KERNEL);
+ rapl_pmus = kzalloc(struct_size(rapl_pmus, rapl_pmu, nr_rapl_pmu), GFP_KERNEL);
if (!rapl_pmus)
return -ENOMEM;
- rapl_pmus->maxdie = maxdie;
+ *rapl_pmus_ptr = rapl_pmus;
+
+ rapl_pmus->nr_rapl_pmu = nr_rapl_pmu;
rapl_pmus->pmu.attr_groups = rapl_attr_groups;
rapl_pmus->pmu.attr_update = rapl_attr_update;
rapl_pmus->pmu.task_ctx_nr = perf_invalid_context;
@@ -692,122 +758,134 @@ static int __init init_rapl_pmus(void)
rapl_pmus->pmu.start = rapl_pmu_event_start;
rapl_pmus->pmu.stop = rapl_pmu_event_stop;
rapl_pmus->pmu.read = rapl_pmu_event_read;
+ rapl_pmus->pmu.scope = rapl_pmu_scope;
rapl_pmus->pmu.module = THIS_MODULE;
rapl_pmus->pmu.capabilities = PERF_PMU_CAP_NO_EXCLUDE;
- return 0;
+
+ ret = init_rapl_pmu(rapl_pmus);
+ if (ret)
+ kfree(rapl_pmus);
+
+ return ret;
}
static struct rapl_model model_snb = {
- .events = BIT(PERF_RAPL_PP0) |
+ .pkg_events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_PP1),
.msr_power_unit = MSR_RAPL_POWER_UNIT,
- .rapl_msrs = intel_rapl_msrs,
+ .rapl_pkg_msrs = intel_rapl_msrs,
};
static struct rapl_model model_snbep = {
- .events = BIT(PERF_RAPL_PP0) |
+ .pkg_events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM),
.msr_power_unit = MSR_RAPL_POWER_UNIT,
- .rapl_msrs = intel_rapl_msrs,
+ .rapl_pkg_msrs = intel_rapl_msrs,
};
static struct rapl_model model_hsw = {
- .events = BIT(PERF_RAPL_PP0) |
+ .pkg_events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM) |
BIT(PERF_RAPL_PP1),
.msr_power_unit = MSR_RAPL_POWER_UNIT,
- .rapl_msrs = intel_rapl_msrs,
+ .rapl_pkg_msrs = intel_rapl_msrs,
};
static struct rapl_model model_hsx = {
- .events = BIT(PERF_RAPL_PP0) |
+ .pkg_events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM),
.unit_quirk = RAPL_UNIT_QUIRK_INTEL_HSW,
.msr_power_unit = MSR_RAPL_POWER_UNIT,
- .rapl_msrs = intel_rapl_msrs,
+ .rapl_pkg_msrs = intel_rapl_msrs,
};
static struct rapl_model model_knl = {
- .events = BIT(PERF_RAPL_PKG) |
+ .pkg_events = BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM),
.unit_quirk = RAPL_UNIT_QUIRK_INTEL_HSW,
.msr_power_unit = MSR_RAPL_POWER_UNIT,
- .rapl_msrs = intel_rapl_msrs,
+ .rapl_pkg_msrs = intel_rapl_msrs,
};
static struct rapl_model model_skl = {
- .events = BIT(PERF_RAPL_PP0) |
+ .pkg_events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM) |
BIT(PERF_RAPL_PP1) |
BIT(PERF_RAPL_PSYS),
.msr_power_unit = MSR_RAPL_POWER_UNIT,
- .rapl_msrs = intel_rapl_msrs,
+ .rapl_pkg_msrs = intel_rapl_msrs,
};
static struct rapl_model model_spr = {
- .events = BIT(PERF_RAPL_PP0) |
+ .pkg_events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM) |
BIT(PERF_RAPL_PSYS),
.unit_quirk = RAPL_UNIT_QUIRK_INTEL_SPR,
.msr_power_unit = MSR_RAPL_POWER_UNIT,
- .rapl_msrs = intel_rapl_spr_msrs,
+ .rapl_pkg_msrs = intel_rapl_spr_msrs,
};
static struct rapl_model model_amd_hygon = {
- .events = BIT(PERF_RAPL_PKG),
+ .pkg_events = BIT(PERF_RAPL_PKG),
+ .core_events = BIT(PERF_RAPL_CORE),
.msr_power_unit = MSR_AMD_RAPL_POWER_UNIT,
- .rapl_msrs = amd_rapl_msrs,
+ .rapl_pkg_msrs = amd_rapl_pkg_msrs,
+ .rapl_core_msrs = amd_rapl_core_msrs,
};
static const struct x86_cpu_id rapl_model_match[] __initconst = {
- X86_MATCH_FEATURE(X86_FEATURE_RAPL, &model_amd_hygon),
- X86_MATCH_INTEL_FAM6_MODEL(SANDYBRIDGE, &model_snb),
- X86_MATCH_INTEL_FAM6_MODEL(SANDYBRIDGE_X, &model_snbep),
- X86_MATCH_INTEL_FAM6_MODEL(IVYBRIDGE, &model_snb),
- X86_MATCH_INTEL_FAM6_MODEL(IVYBRIDGE_X, &model_snbep),
- X86_MATCH_INTEL_FAM6_MODEL(HASWELL, &model_hsw),
- X86_MATCH_INTEL_FAM6_MODEL(HASWELL_X, &model_hsx),
- X86_MATCH_INTEL_FAM6_MODEL(HASWELL_L, &model_hsw),
- X86_MATCH_INTEL_FAM6_MODEL(HASWELL_G, &model_hsw),
- X86_MATCH_INTEL_FAM6_MODEL(BROADWELL, &model_hsw),
- X86_MATCH_INTEL_FAM6_MODEL(BROADWELL_G, &model_hsw),
- X86_MATCH_INTEL_FAM6_MODEL(BROADWELL_X, &model_hsx),
- X86_MATCH_INTEL_FAM6_MODEL(BROADWELL_D, &model_hsx),
- X86_MATCH_INTEL_FAM6_MODEL(XEON_PHI_KNL, &model_knl),
- X86_MATCH_INTEL_FAM6_MODEL(XEON_PHI_KNM, &model_knl),
- X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE_L, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE_X, &model_hsx),
- X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE_L, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(CANNONLAKE_L, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT, &model_hsw),
- X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT_D, &model_hsw),
- X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT_PLUS, &model_hsw),
- X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_L, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(ICELAKE, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_D, &model_hsx),
- X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X, &model_hsx),
- X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE_L, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(ATOM_GRACEMONT, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X, &model_spr),
- X86_MATCH_INTEL_FAM6_MODEL(EMERALDRAPIDS_X, &model_spr),
- X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_P, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_S, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE, &model_skl),
- X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE_L, &model_skl),
+ X86_MATCH_FEATURE(X86_FEATURE_RAPL, &model_amd_hygon),
+ X86_MATCH_VFM(INTEL_SANDYBRIDGE, &model_snb),
+ X86_MATCH_VFM(INTEL_SANDYBRIDGE_X, &model_snbep),
+ X86_MATCH_VFM(INTEL_IVYBRIDGE, &model_snb),
+ X86_MATCH_VFM(INTEL_IVYBRIDGE_X, &model_snbep),
+ X86_MATCH_VFM(INTEL_HASWELL, &model_hsw),
+ X86_MATCH_VFM(INTEL_HASWELL_X, &model_hsx),
+ X86_MATCH_VFM(INTEL_HASWELL_L, &model_hsw),
+ X86_MATCH_VFM(INTEL_HASWELL_G, &model_hsw),
+ X86_MATCH_VFM(INTEL_BROADWELL, &model_hsw),
+ X86_MATCH_VFM(INTEL_BROADWELL_G, &model_hsw),
+ X86_MATCH_VFM(INTEL_BROADWELL_X, &model_hsx),
+ X86_MATCH_VFM(INTEL_BROADWELL_D, &model_hsx),
+ X86_MATCH_VFM(INTEL_XEON_PHI_KNL, &model_knl),
+ X86_MATCH_VFM(INTEL_XEON_PHI_KNM, &model_knl),
+ X86_MATCH_VFM(INTEL_SKYLAKE_L, &model_skl),
+ X86_MATCH_VFM(INTEL_SKYLAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_SKYLAKE_X, &model_hsx),
+ X86_MATCH_VFM(INTEL_KABYLAKE_L, &model_skl),
+ X86_MATCH_VFM(INTEL_KABYLAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_CANNONLAKE_L, &model_skl),
+ X86_MATCH_VFM(INTEL_ATOM_GOLDMONT, &model_hsw),
+ X86_MATCH_VFM(INTEL_ATOM_GOLDMONT_D, &model_hsw),
+ X86_MATCH_VFM(INTEL_ATOM_GOLDMONT_PLUS, &model_hsw),
+ X86_MATCH_VFM(INTEL_ICELAKE_L, &model_skl),
+ X86_MATCH_VFM(INTEL_ICELAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_ICELAKE_D, &model_hsx),
+ X86_MATCH_VFM(INTEL_ICELAKE_X, &model_hsx),
+ X86_MATCH_VFM(INTEL_COMETLAKE_L, &model_skl),
+ X86_MATCH_VFM(INTEL_COMETLAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_TIGERLAKE_L, &model_skl),
+ X86_MATCH_VFM(INTEL_TIGERLAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_ALDERLAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_ALDERLAKE_L, &model_skl),
+ X86_MATCH_VFM(INTEL_ATOM_GRACEMONT, &model_skl),
+ X86_MATCH_VFM(INTEL_SAPPHIRERAPIDS_X, &model_spr),
+ X86_MATCH_VFM(INTEL_EMERALDRAPIDS_X, &model_spr),
+ X86_MATCH_VFM(INTEL_RAPTORLAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_RAPTORLAKE_P, &model_skl),
+ X86_MATCH_VFM(INTEL_RAPTORLAKE_S, &model_skl),
+ X86_MATCH_VFM(INTEL_METEORLAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_METEORLAKE_L, &model_skl),
+ X86_MATCH_VFM(INTEL_ARROWLAKE_H, &model_skl),
+ X86_MATCH_VFM(INTEL_ARROWLAKE, &model_skl),
+ X86_MATCH_VFM(INTEL_ARROWLAKE_U, &model_skl),
+ X86_MATCH_VFM(INTEL_LUNARLAKE_M, &model_skl),
{},
};
MODULE_DEVICE_TABLE(x86cpu, rapl_model_match);
@@ -815,57 +893,73 @@ MODULE_DEVICE_TABLE(x86cpu, rapl_model_match);
static int __init rapl_pmu_init(void)
{
const struct x86_cpu_id *id;
- struct rapl_model *rm;
+ int rapl_pkg_pmu_scope = PERF_PMU_SCOPE_DIE;
int ret;
+ if (rapl_pkg_pmu_is_pkg_scope())
+ rapl_pkg_pmu_scope = PERF_PMU_SCOPE_PKG;
+
id = x86_match_cpu(rapl_model_match);
if (!id)
return -ENODEV;
- rm = (struct rapl_model *) id->driver_data;
-
- rapl_msrs = rm->rapl_msrs;
+ rapl_model = (struct rapl_model *) id->driver_data;
- rapl_cntr_mask = perf_msr_probe(rapl_msrs, PERF_RAPL_MAX,
- false, (void *) &rm->events);
-
- ret = rapl_check_hw_unit(rm);
+ ret = rapl_check_hw_unit();
if (ret)
return ret;
- ret = init_rapl_pmus();
+ ret = init_rapl_pmus(&rapl_pmus_pkg, rapl_pkg_pmu_scope, rapl_attr_groups,
+ rapl_attr_update);
if (ret)
return ret;
- /*
- * Install callbacks. Core will call them for each online cpu.
- */
- ret = cpuhp_setup_state(CPUHP_AP_PERF_X86_RAPL_ONLINE,
- "perf/x86/rapl:online",
- rapl_cpu_online, rapl_cpu_offline);
+ rapl_pmus_pkg->cntr_mask = perf_msr_probe(rapl_model->rapl_pkg_msrs,
+ PERF_RAPL_PKG_EVENTS_MAX, false,
+ (void *) &rapl_model->pkg_events);
+
+ ret = perf_pmu_register(&rapl_pmus_pkg->pmu, "power", -1);
if (ret)
goto out;
- ret = perf_pmu_register(&rapl_pmus->pmu, "power", -1);
- if (ret)
- goto out1;
+ if (rapl_model->core_events) {
+ ret = init_rapl_pmus(&rapl_pmus_core, PERF_PMU_SCOPE_CORE,
+ rapl_core_attr_groups,
+ rapl_core_attr_update);
+ if (ret) {
+ pr_warn("power-core PMU initialization failed (%d)\n", ret);
+ goto core_init_failed;
+ }
+
+ rapl_pmus_core->cntr_mask = perf_msr_probe(rapl_model->rapl_core_msrs,
+ PERF_RAPL_CORE_EVENTS_MAX, false,
+ (void *) &rapl_model->core_events);
+
+ ret = perf_pmu_register(&rapl_pmus_core->pmu, "power_core", -1);
+ if (ret) {
+ pr_warn("power-core PMU registration failed (%d)\n", ret);
+ cleanup_rapl_pmus(rapl_pmus_core);
+ }
+ }
+core_init_failed:
rapl_advertise();
return 0;
-out1:
- cpuhp_remove_state(CPUHP_AP_PERF_X86_RAPL_ONLINE);
out:
pr_warn("Initialization failed (%d), disabled\n", ret);
- cleanup_rapl_pmus();
+ cleanup_rapl_pmus(rapl_pmus_pkg);
return ret;
}
module_init(rapl_pmu_init);
static void __exit intel_rapl_exit(void)
{
- cpuhp_remove_state_nocalls(CPUHP_AP_PERF_X86_RAPL_ONLINE);
- perf_pmu_unregister(&rapl_pmus->pmu);
- cleanup_rapl_pmus();
+ if (rapl_pmus_core) {
+ perf_pmu_unregister(&rapl_pmus_core->pmu);
+ cleanup_rapl_pmus(rapl_pmus_core);
+ }
+ perf_pmu_unregister(&rapl_pmus_pkg->pmu);
+ cleanup_rapl_pmus(rapl_pmus_pkg);
}
module_exit(intel_rapl_exit);