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Message-ID: <20240624055907.7720-9-Dhananjay.Ugwekar@amd.com>
Date: Mon, 24 Jun 2024 05:59:05 +0000
From: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
To: <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
<namhyung@...nel.org>, <mark.rutland@....com>,
<alexander.shishkin@...ux.intel.com>, <jolsa@...nel.org>,
<irogers@...gle.com>, <adrian.hunter@...el.com>, <kan.liang@...ux.intel.com>,
<tglx@...utronix.de>, <bp@...en8.de>, <dave.hansen@...ux.intel.com>,
<x86@...nel.org>, <kees@...nel.org>, <gustavoars@...nel.org>,
<rui.zhang@...el.com>, <oleksandr@...alenko.name>
CC: <linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-hardening@...r.kernel.org>, <ananth.narayan@....com>,
<gautham.shenoy@....com>, <kprateek.nayak@....com>, <ravi.bangoria@....com>,
<sandipan.das@....com>, <linux-pm@...r.kernel.org>, Dhananjay Ugwekar
<Dhananjay.Ugwekar@....com>
Subject: [PATCH v3 08/10] perf/x86/rapl: Modify the generic variable names to *_pkg*
Prep for addition of power_per_core PMU to handle core scope energy
consumption for AMD CPUs.
Replace the generic names with *_pkg*, to differentiate between the
scopes of the two different PMUs and their variables.
No functional change.
Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
---
arch/x86/events/rapl.c | 83 +++++++++++++++++++++---------------------
1 file changed, 42 insertions(+), 41 deletions(-)
diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c
index f815c60ec551..b03b044a390f 100644
--- a/arch/x86/events/rapl.c
+++ b/arch/x86/events/rapl.c
@@ -70,18 +70,18 @@ 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 = {
+static const char *const rapl_pkg_domain_names[NR_RAPL_PKG_DOMAINS] __initconst = {
"pp0-core",
"package",
"dram",
@@ -132,15 +132,15 @@ enum rapl_unit_quirk {
struct rapl_model {
struct perf_msr *rapl_msrs;
- unsigned long events;
+ unsigned long pkg_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 unsigned int rapl_cntr_mask;
+static int rapl_hw_unit[NR_RAPL_PKG_DOMAINS] __read_mostly;
+static struct rapl_pmus *rapl_pmus_pkg;
+static unsigned int rapl_pkg_cntr_mask;
static u64 rapl_timer_ms;
static struct perf_msr *rapl_msrs;
static struct rapl_model *rapl_model;
@@ -165,7 +165,8 @@ static inline struct rapl_pmu *cpu_to_rapl_pmu(unsigned int cpu)
* The unsigned check also catches the '-1' return value for non
* existent mappings in the topology map.
*/
- return rapl_pmu_idx < rapl_pmus->nr_rapl_pmu ? rapl_pmus->rapl_pmu[rapl_pmu_idx] : NULL;
+ return rapl_pmu_idx < rapl_pmus_pkg->nr_rapl_pmu ?
+ rapl_pmus_pkg->rapl_pmu[rapl_pmu_idx] : NULL;
}
static inline u64 rapl_read_counter(struct perf_event *event)
@@ -177,7 +178,7 @@ static inline u64 rapl_read_counter(struct perf_event *event)
static inline u64 rapl_scale(u64 v, int cfg)
{
- if (cfg > NR_RAPL_DOMAINS) {
+ if (cfg > NR_RAPL_PKG_DOMAINS) {
pr_warn("Invalid domain %d, failed to scale data\n", cfg);
return v;
}
@@ -347,7 +348,7 @@ static int rapl_pmu_event_init(struct perf_event *event)
struct rapl_pmu *rapl_pmu;
/* only look at RAPL events */
- if (event->attr.type != rapl_pmus->pmu.type)
+ if (event->attr.type != rapl_pmus_pkg->pmu.type)
return -ENOENT;
/* check only supported bits are set */
@@ -359,14 +360,14 @@ static int rapl_pmu_event_init(struct perf_event *event)
event->event_caps |= PERF_EV_CAP_READ_ACTIVE_PKG;
- if (!cfg || cfg >= NR_RAPL_DOMAINS + 1)
+ if (!cfg || cfg >= NR_RAPL_PKG_DOMAINS + 1)
return -EINVAL;
- cfg = array_index_nospec((long)cfg, NR_RAPL_DOMAINS + 1);
+ cfg = array_index_nospec((long)cfg, NR_RAPL_PKG_DOMAINS + 1);
bit = cfg - 1;
/* check event supported */
- if (!(rapl_cntr_mask & (1 << bit)))
+ if (!(rapl_pkg_cntr_mask & (1 << bit)))
return -EINVAL;
/* unsupported modes and filters */
@@ -394,7 +395,7 @@ static void rapl_pmu_event_read(struct perf_event *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_pmus->cpumask);
+ return cpumap_print_to_pagebuf(true, buf, &rapl_pmus_pkg->cpumask);
}
static DEVICE_ATTR(cpumask, S_IRUGO, rapl_get_attr_cpumask, NULL);
@@ -546,11 +547,11 @@ 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 },
@@ -583,7 +584,7 @@ static int __rapl_cpu_offline(struct rapl_pmus *rapl_pmus, unsigned int rapl_pmu
static int rapl_cpu_offline(unsigned int cpu)
{
- return __rapl_cpu_offline(rapl_pmus, get_rapl_pmu_idx(cpu),
+ return __rapl_cpu_offline(rapl_pmus_pkg, get_rapl_pmu_idx(cpu),
get_rapl_pmu_cpumask(cpu), cpu);
}
@@ -622,7 +623,7 @@ static int __rapl_cpu_online(struct rapl_pmus *rapl_pmus, unsigned int rapl_pmu_
static int rapl_cpu_online(unsigned int cpu)
{
- return __rapl_cpu_online(rapl_pmus, get_rapl_pmu_idx(cpu),
+ return __rapl_cpu_online(rapl_pmus_pkg, get_rapl_pmu_idx(cpu),
get_rapl_pmu_cpumask(cpu), cpu);
}
@@ -635,7 +636,7 @@ static int rapl_check_hw_unit(void)
/* protect rdmsrl() to handle virtualization */
if (rdmsrl_safe(rapl_model->msr_power_unit, &msr_rapl_power_unit_bits))
return -1;
- for (i = 0; i < NR_RAPL_DOMAINS; i++)
+ for (i = 0; i < NR_RAPL_PKG_DOMAINS; i++)
rapl_hw_unit[i] = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
switch (rapl_model->unit_quirk) {
@@ -677,12 +678,12 @@ static void __init rapl_advertise(void)
int i;
pr_info("API unit is 2^-32 Joules, %d fixed counters, %llu ms ovfl timer\n",
- hweight32(rapl_cntr_mask), rapl_timer_ms);
+ hweight32(rapl_pkg_cntr_mask), 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_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_hw_unit[i]);
}
}
}
@@ -737,7 +738,7 @@ static int __init init_rapl_pmus(struct rapl_pmus **rapl_pmus_ptr)
}
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,
@@ -745,7 +746,7 @@ static struct rapl_model model_snb = {
};
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,
@@ -753,7 +754,7 @@ static struct rapl_model model_snbep = {
};
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),
@@ -762,7 +763,7 @@ static struct rapl_model model_hsw = {
};
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,
@@ -771,7 +772,7 @@ static struct rapl_model model_hsx = {
};
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,
@@ -779,7 +780,7 @@ static struct rapl_model model_knl = {
};
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) |
@@ -789,7 +790,7 @@ static struct rapl_model model_skl = {
};
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),
@@ -799,9 +800,9 @@ static struct rapl_model model_spr = {
};
static struct rapl_model model_amd_hygon = {
- .events = BIT(PERF_RAPL_PKG),
+ .pkg_events = BIT(PERF_RAPL_PKG),
.msr_power_unit = MSR_AMD_RAPL_POWER_UNIT,
- .rapl_msrs = amd_rapl_msrs,
+ .rapl_msrs = amd_rapl_pkg_msrs,
};
static const struct x86_cpu_id rapl_model_match[] __initconst = {
@@ -867,14 +868,14 @@ static int __init rapl_pmu_init(void)
rapl_msrs = rapl_model->rapl_msrs;
- rapl_cntr_mask = perf_msr_probe(rapl_msrs, PERF_RAPL_MAX,
- false, (void *) &rapl_model->events);
+ rapl_pkg_cntr_mask = perf_msr_probe(rapl_msrs, PERF_RAPL_PKG_EVENTS_MAX,
+ false, (void *) &rapl_model->pkg_events);
ret = rapl_check_hw_unit();
if (ret)
return ret;
- ret = init_rapl_pmus(&rapl_pmus);
+ ret = init_rapl_pmus(&rapl_pmus_pkg);
if (ret)
return ret;
@@ -887,7 +888,7 @@ static int __init rapl_pmu_init(void)
if (ret)
goto out;
- ret = perf_pmu_register(&rapl_pmus->pmu, "power", -1);
+ ret = perf_pmu_register(&rapl_pmus_pkg->pmu, "power", -1);
if (ret)
goto out1;
@@ -898,7 +899,7 @@ static int __init rapl_pmu_init(void)
cpuhp_remove_state(CPUHP_AP_PERF_X86_RAPL_ONLINE);
out:
pr_warn("Initialization failed (%d), disabled\n", ret);
- cleanup_rapl_pmus(rapl_pmus);
+ cleanup_rapl_pmus(rapl_pmus_pkg);
return ret;
}
module_init(rapl_pmu_init);
@@ -906,7 +907,7 @@ 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(rapl_pmus);
+ perf_pmu_unregister(&rapl_pmus_pkg->pmu);
+ cleanup_rapl_pmus(rapl_pmus_pkg);
}
module_exit(intel_rapl_exit);
--
2.34.1
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