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authorLinus Torvalds <torvalds@linux-foundation.org>2020-08-15 10:34:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-15 10:34:24 -0700
commit7f5faaaa5909bb0b26dcd309424da14bdf0c7e93 (patch)
tree3e397a7a396e55dd9a8d930f4ae661df7d5cb5cc /arch
parenteb1319af4119c4936e02c879295e9fd4d50bbe3a (diff)
parentbcfd218b66790243ef303c1b35ce59f786ded225 (diff)
Merge tag 'perf-urgent-2020-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar: "Misc fixes, an expansion of perf syscall access to CAP_PERFMON privileged tools, plus a RAPL HW-enablement for Intel SPR platforms" * tag 'perf-urgent-2020-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/rapl: Add support for Intel SPR platform perf/x86/rapl: Support multiple RAPL unit quirks perf/x86/rapl: Fix missing psys sysfs attributes hw_breakpoint: Remove unused __register_perf_hw_breakpoint() declaration kprobes: Remove show_registers() function prototype perf/core: Take over CAP_SYS_PTRACE creds to CAP_PERFMON capability
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/events/rapl.c46
1 files changed, 36 insertions, 10 deletions
diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c
index 68b38820b10e..67b411f7e8c4 100644
--- a/arch/x86/events/rapl.c
+++ b/arch/x86/events/rapl.c
@@ -130,11 +130,17 @@ struct rapl_pmus {
struct rapl_pmu *pmus[];
};
+enum rapl_unit_quirk {
+ RAPL_UNIT_QUIRK_NONE,
+ RAPL_UNIT_QUIRK_INTEL_HSW,
+ RAPL_UNIT_QUIRK_INTEL_SPR,
+};
+
struct rapl_model {
struct perf_msr *rapl_msrs;
unsigned long events;
unsigned int msr_power_unit;
- bool apply_quirk;
+ enum rapl_unit_quirk unit_quirk;
};
/* 1/2^hw_unit Joule */
@@ -612,14 +618,28 @@ static int rapl_check_hw_unit(struct rapl_model *rm)
for (i = 0; i < NR_RAPL_DOMAINS; i++)
rapl_hw_unit[i] = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
+ switch (rm->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
* "Intel Xeon Processor E5-1600 and E5-2600 v3 Product Families, V2
* of 2. Datasheet, September 2014, Reference Number: 330784-001 "
*/
- if (rm->apply_quirk)
+ case RAPL_UNIT_QUIRK_INTEL_HSW:
+ rapl_hw_unit[PERF_RAPL_RAM] = 16;
+ break;
+ /*
+ * SPR shares the same DRAM domain energy unit as HSW, plus it
+ * also has a fixed energy unit for Psys domain.
+ */
+ case RAPL_UNIT_QUIRK_INTEL_SPR:
rapl_hw_unit[PERF_RAPL_RAM] = 16;
+ rapl_hw_unit[PERF_RAPL_PSYS] = 0;
+ break;
+ default:
+ break;
+ }
+
/*
* Calculate the timer rate:
@@ -665,7 +685,7 @@ static const struct attribute_group *rapl_attr_update[] = {
&rapl_events_pkg_group,
&rapl_events_ram_group,
&rapl_events_gpu_group,
- &rapl_events_gpu_group,
+ &rapl_events_psys_group,
NULL,
};
@@ -698,7 +718,6 @@ static struct rapl_model model_snb = {
.events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_PP1),
- .apply_quirk = false,
.msr_power_unit = MSR_RAPL_POWER_UNIT,
.rapl_msrs = intel_rapl_msrs,
};
@@ -707,7 +726,6 @@ static struct rapl_model model_snbep = {
.events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM),
- .apply_quirk = false,
.msr_power_unit = MSR_RAPL_POWER_UNIT,
.rapl_msrs = intel_rapl_msrs,
};
@@ -717,7 +735,6 @@ static struct rapl_model model_hsw = {
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM) |
BIT(PERF_RAPL_PP1),
- .apply_quirk = false,
.msr_power_unit = MSR_RAPL_POWER_UNIT,
.rapl_msrs = intel_rapl_msrs,
};
@@ -726,7 +743,7 @@ static struct rapl_model model_hsx = {
.events = BIT(PERF_RAPL_PP0) |
BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM),
- .apply_quirk = true,
+ .unit_quirk = RAPL_UNIT_QUIRK_INTEL_HSW,
.msr_power_unit = MSR_RAPL_POWER_UNIT,
.rapl_msrs = intel_rapl_msrs,
};
@@ -734,7 +751,7 @@ static struct rapl_model model_hsx = {
static struct rapl_model model_knl = {
.events = BIT(PERF_RAPL_PKG) |
BIT(PERF_RAPL_RAM),
- .apply_quirk = true,
+ .unit_quirk = RAPL_UNIT_QUIRK_INTEL_HSW,
.msr_power_unit = MSR_RAPL_POWER_UNIT,
.rapl_msrs = intel_rapl_msrs,
};
@@ -745,14 +762,22 @@ static struct rapl_model model_skl = {
BIT(PERF_RAPL_RAM) |
BIT(PERF_RAPL_PP1) |
BIT(PERF_RAPL_PSYS),
- .apply_quirk = false,
+ .msr_power_unit = MSR_RAPL_POWER_UNIT,
+ .rapl_msrs = intel_rapl_msrs,
+};
+
+static struct rapl_model model_spr = {
+ .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_msrs,
};
static struct rapl_model model_amd_fam17h = {
.events = BIT(PERF_RAPL_PKG),
- .apply_quirk = false,
.msr_power_unit = MSR_AMD_RAPL_POWER_UNIT,
.rapl_msrs = amd_rapl_msrs,
};
@@ -787,6 +812,7 @@ static const struct x86_cpu_id rapl_model_match[] __initconst = {
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(SAPPHIRERAPIDS_X, &model_spr),
X86_MATCH_VENDOR_FAM(AMD, 0x17, &model_amd_fam17h),
X86_MATCH_VENDOR_FAM(HYGON, 0x18, &model_amd_fam17h),
{},