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powerpc/perf: power10 Performance Monitoring support 

Base enablement patch to register performance monitoring hardware
support for power10. Patch introduce the raw event encoding format,
defines the supported list of events, config fields for the event
attributes and their corresponding bit values which are exported via
sysfs.

Patch also enhances the support function in isa207_common.c to include
power10 pmu hardware.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1594996707-3727-9-git-send-email-atrajeev@linux.vnet.ibm.com
This commit is contained in:
Athira Rajeev 2020-07-17 10:38:20 -04:00 committed by Michael Ellerman
parent 9908c826d5
commit a64e697cef
7 changed files with 566 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/perf/Makefile
View File

@ -9,7 +9,7 @@ obj-$(CONFIG_PPC_PERF_CTRS) += core-book3s.o bhrb.o
obj64-$(CONFIG_PPC_PERF_CTRS) += ppc970-pmu.o power5-pmu.o \
power5+-pmu.o power6-pmu.o power7-pmu.o \
isa207-common.o power8-pmu.o power9-pmu.o \
generic-compat-pmu.o
generic-compat-pmu.o power10-pmu.o
obj32-$(CONFIG_PPC_PERF_CTRS) += mpc7450-pmu.o
obj-$(CONFIG_PPC_POWERNV) += imc-pmu.o

2
arch/powerpc/perf/core-book3s.c
View File

@ -2333,6 +2333,8 @@ static int __init init_ppc64_pmu(void)
return 0;
else if (!init_power9_pmu())
return 0;
else if (!init_power10_pmu())
return 0;
else if (!init_ppc970_pmu())
return 0;
else

1
arch/powerpc/perf/internal.h
View File

@ -9,4 +9,5 @@ extern int init_power6_pmu(void);
extern int init_power7_pmu(void);
extern int init_power8_pmu(void);
extern int init_power9_pmu(void);
extern int init_power10_pmu(void);
extern int init_generic_compat_pmu(void);

59
arch/powerpc/perf/isa207-common.c
View File

@ -55,7 +55,9 @@ static bool is_event_valid(u64 event)
{
u64 valid_mask = EVENT_VALID_MASK;
if (cpu_has_feature(CPU_FTR_ARCH_300))
if (cpu_has_feature(CPU_FTR_ARCH_31))
valid_mask = p10_EVENT_VALID_MASK;
else if (cpu_has_feature(CPU_FTR_ARCH_300))
valid_mask = p9_EVENT_VALID_MASK;
return !(event & ~valid_mask);
@ -69,6 +71,14 @@ static inline bool is_event_marked(u64 event)
return false;
}
static unsigned long sdar_mod_val(u64 event)
{
if (cpu_has_feature(CPU_FTR_ARCH_31))
return p10_SDAR_MODE(event);
return p9_SDAR_MODE(event);
}
static void mmcra_sdar_mode(u64 event, unsigned long *mmcra)
{
/*
@ -79,7 +89,7 @@ static void mmcra_sdar_mode(u64 event, unsigned long *mmcra)
* MMCRA[SDAR_MODE] will be programmed as "0b01" for continous sampling
* mode and will be un-changed when setting MMCRA[63] (Marked events).
*
* Incase of Power9:
* Incase of Power9/power10:
* Marked event: MMCRA[SDAR_MODE] will be set to 0b00 ('No Updates'),
* or if group already have any marked events.
* For rest
@ -90,8 +100,8 @@ static void mmcra_sdar_mode(u64 event, unsigned long *mmcra)
if (cpu_has_feature(CPU_FTR_ARCH_300)) {
if (is_event_marked(event) || (*mmcra & MMCRA_SAMPLE_ENABLE))
*mmcra &= MMCRA_SDAR_MODE_NO_UPDATES;
else if (p9_SDAR_MODE(event))
*mmcra |= p9_SDAR_MODE(event) << MMCRA_SDAR_MODE_SHIFT;
else if (sdar_mod_val(event))
*mmcra |= sdar_mod_val(event) << MMCRA_SDAR_MODE_SHIFT;
else
*mmcra |= MMCRA_SDAR_MODE_DCACHE;
} else
@ -134,7 +144,11 @@ static bool is_thresh_cmp_valid(u64 event)
/*
* Check the mantissa upper two bits are not zero, unless the
* exponent is also zero. See the THRESH_CMP_MANTISSA doc.
* Power10: thresh_cmp is replaced by l2_l3 event select.
*/
if (cpu_has_feature(CPU_FTR_ARCH_31))
return false;
cmp = (event >> EVENT_THR_CMP_SHIFT) & EVENT_THR_CMP_MASK;
exp = cmp >> 7;
@ -251,7 +265,12 @@ int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp)
pmc = (event >> EVENT_PMC_SHIFT) & EVENT_PMC_MASK;
unit = (event >> EVENT_UNIT_SHIFT) & EVENT_UNIT_MASK;
cache = (event >> EVENT_CACHE_SEL_SHIFT) & EVENT_CACHE_SEL_MASK;
if (cpu_has_feature(CPU_FTR_ARCH_31))
cache = (event >> EVENT_CACHE_SEL_SHIFT) &
p10_EVENT_CACHE_SEL_MASK;
else
cache = (event >> EVENT_CACHE_SEL_SHIFT) &
EVENT_CACHE_SEL_MASK;
ebb = (event >> EVENT_EBB_SHIFT) & EVENT_EBB_MASK;
if (pmc) {
@ -283,7 +302,10 @@ int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp)
}
if (unit >= 6 && unit <= 9) {
if (cpu_has_feature(CPU_FTR_ARCH_300)) {
if (cpu_has_feature(CPU_FTR_ARCH_31) && (unit == 6)) {
mask |= CNST_L2L3_GROUP_MASK;
value |= CNST_L2L3_GROUP_VAL(event >> p10_L2L3_EVENT_SHIFT);
} else if (cpu_has_feature(CPU_FTR_ARCH_300)) {
mask |= CNST_CACHE_GROUP_MASK;
value |= CNST_CACHE_GROUP_VAL(event & 0xff);
@ -367,6 +389,7 @@ int isa207_compute_mmcr(u64 event[], int n_ev,
struct perf_event *pevents[])
{
unsigned long mmcra, mmcr1, mmcr2, unit, combine, psel, cache, val;
unsigned long mmcr3;
unsigned int pmc, pmc_inuse;
int i;
@ -379,7 +402,7 @@ int isa207_compute_mmcr(u64 event[], int n_ev,
pmc_inuse |= 1 << pmc;
}
mmcra = mmcr1 = mmcr2 = 0;
mmcra = mmcr1 = mmcr2 = mmcr3 = 0;
/* Second pass: assign PMCs, set all MMCR1 fields */
for (i = 0; i < n_ev; ++i) {
@ -438,8 +461,17 @@ int isa207_compute_mmcr(u64 event[], int n_ev,
mmcra |= val << MMCRA_THR_CTL_SHIFT;
val = (event[i] >> EVENT_THR_SEL_SHIFT) & EVENT_THR_SEL_MASK;
mmcra |= val << MMCRA_THR_SEL_SHIFT;
val = (event[i] >> EVENT_THR_CMP_SHIFT) & EVENT_THR_CMP_MASK;
mmcra |= thresh_cmp_val(val);
if (!cpu_has_feature(CPU_FTR_ARCH_31)) {
val = (event[i] >> EVENT_THR_CMP_SHIFT) &
EVENT_THR_CMP_MASK;
mmcra |= thresh_cmp_val(val);
}
}
if (cpu_has_feature(CPU_FTR_ARCH_31) && (unit == 6)) {
val = (event[i] >> p10_L2L3_EVENT_SHIFT) &
p10_EVENT_L2L3_SEL_MASK;
mmcr2 |= val << p10_L2L3_SEL_SHIFT;
}
if (event[i] & EVENT_WANTS_BHRB) {
@ -460,6 +492,14 @@ int isa207_compute_mmcr(u64 event[], int n_ev,
mmcr2 |= MMCR2_FCS(pmc);
}
if (cpu_has_feature(CPU_FTR_ARCH_31)) {
if (pmc <= 4) {
val = (event[i] >> p10_EVENT_MMCR3_SHIFT) &
p10_EVENT_MMCR3_MASK;
mmcr3 |= val << MMCR3_SHIFT(pmc);
}
}
hwc[i] = pmc - 1;
}
@ -480,6 +520,7 @@ int isa207_compute_mmcr(u64 event[], int n_ev,
mmcr->mmcr1 = mmcr1;
mmcr->mmcra = mmcra;
mmcr->mmcr2 = mmcr2;
mmcr->mmcr3 = mmcr3;
return 0;
}

33
arch/powerpc/perf/isa207-common.h
View File

@ -87,6 +87,31 @@
EVENT_LINUX_MASK | \
EVENT_PSEL_MASK))
/* Contants to support power10 raw encoding format */
#define p10_SDAR_MODE_SHIFT 22
#define p10_SDAR_MODE_MASK 0x3ull
#define p10_SDAR_MODE(v) (((v) >> p10_SDAR_MODE_SHIFT) & \
p10_SDAR_MODE_MASK)
#define p10_EVENT_L2L3_SEL_MASK 0x1f
#define p10_L2L3_SEL_SHIFT 3
#define p10_L2L3_EVENT_SHIFT 40
#define p10_EVENT_THRESH_MASK 0xffffull
#define p10_EVENT_CACHE_SEL_MASK 0x3ull
#define p10_EVENT_MMCR3_MASK 0x7fffull
#define p10_EVENT_MMCR3_SHIFT 45
#define p10_EVENT_VALID_MASK \
((p10_SDAR_MODE_MASK << p10_SDAR_MODE_SHIFT | \
(p10_EVENT_THRESH_MASK << EVENT_THRESH_SHIFT) | \
(EVENT_SAMPLE_MASK << EVENT_SAMPLE_SHIFT) | \
(p10_EVENT_CACHE_SEL_MASK << EVENT_CACHE_SEL_SHIFT) | \
(EVENT_PMC_MASK << EVENT_PMC_SHIFT) | \
(EVENT_UNIT_MASK << EVENT_UNIT_SHIFT) | \
(p9_EVENT_COMBINE_MASK << p9_EVENT_COMBINE_SHIFT) | \
(p10_EVENT_MMCR3_MASK << p10_EVENT_MMCR3_SHIFT) | \
(EVENT_MARKED_MASK << EVENT_MARKED_SHIFT) | \
EVENT_LINUX_MASK | \
EVENT_PSEL_MASK))
/*
* Layout of constraint bits:
*
@ -135,6 +160,9 @@
#define CNST_CACHE_PMC4_VAL (1ull << 54)
#define CNST_CACHE_PMC4_MASK CNST_CACHE_PMC4_VAL
#define CNST_L2L3_GROUP_VAL(v) (((v) & 0x1full) << 55)
#define CNST_L2L3_GROUP_MASK CNST_L2L3_GROUP_VAL(0x1f)
/*
* For NC we are counting up to 4 events. This requires three bits, and we need
* the fifth event to overflow and set the 4th bit. To achieve that we bias the
@ -191,7 +219,7 @@
#define MMCRA_THR_CTR_EXP(v) (((v) >> MMCRA_THR_CTR_EXP_SHIFT) &\
MMCRA_THR_CTR_EXP_MASK)
/* MMCR1 Threshold Compare bit constant for power9 */
/* MMCRA Threshold Compare bit constant for power9 */
#define p9_MMCRA_THR_CMP_SHIFT 45
/* Bits in MMCR2 for PowerISA v2.07 */
@ -202,6 +230,9 @@
#define MAX_ALT 2
#define MAX_PMU_COUNTERS 6
/* Bits in MMCR3 for PowerISA v3.10 */
#define MMCR3_SHIFT(pmc) (49 - (15 * ((pmc) - 1)))
#define ISA207_SIER_TYPE_SHIFT 15
#define ISA207_SIER_TYPE_MASK (0x7ull << ISA207_SIER_TYPE_SHIFT)

70
arch/powerpc/perf/power10-events-list.h Normal file
View File

@ -0,0 +1,70 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Performance counter support for POWER10 processors.
*
* Copyright 2020 Madhavan Srinivasan, IBM Corporation.
* Copyright 2020 Athira Rajeev, IBM Corporation.
*/
/*
* Power10 event codes.
*/
EVENT(PM_RUN_CYC, 0x600f4);
EVENT(PM_DISP_STALL_CYC, 0x100f8);
EVENT(PM_EXEC_STALL, 0x30008);
EVENT(PM_RUN_INST_CMPL, 0x500fa);
EVENT(PM_BR_CMPL, 0x4d05e);
EVENT(PM_BR_MPRED_CMPL, 0x400f6);
/* All L1 D cache load references counted at finish, gated by reject */
EVENT(PM_LD_REF_L1, 0x100fc);
/* Load Missed L1 */
EVENT(PM_LD_MISS_L1, 0x3e054);
/* Store Missed L1 */
EVENT(PM_ST_MISS_L1, 0x300f0);
/* L1 cache data prefetches */
EVENT(PM_LD_PREFETCH_CACHE_LINE_MISS, 0x1002c);
/* Demand iCache Miss */
EVENT(PM_L1_ICACHE_MISS, 0x200fc);
/* Instruction fetches from L1 */
EVENT(PM_INST_FROM_L1, 0x04080);
/* Instruction Demand sectors wriittent into IL1 */
EVENT(PM_INST_FROM_L1MISS, 0x03f00000001c040);
/* Instruction prefetch written into IL1 */
EVENT(PM_IC_PREF_REQ, 0x040a0);
/* The data cache was reloaded from local core's L3 due to a demand load */
EVENT(PM_DATA_FROM_L3, 0x01340000001c040);
/* Demand LD - L3 Miss (not L2 hit and not L3 hit) */
EVENT(PM_DATA_FROM_L3MISS, 0x300fe);
/* Data PTEG reload */
EVENT(PM_DTLB_MISS, 0x300fc);
/* ITLB Reloaded */
EVENT(PM_ITLB_MISS, 0x400fc);
EVENT(PM_RUN_CYC_ALT, 0x0001e);
EVENT(PM_RUN_INST_CMPL_ALT, 0x00002);
/*
* Memory Access Events
*
* Primary PMU event used here is PM_MRK_INST_CMPL (0x401e0)
* To enable capturing of memory profiling, these MMCRA bits
* needs to be programmed and corresponding raw event format
* encoding.
*
* MMCRA bits encoding needed are
* SM (Sampling Mode)
* EM (Eligibility for Random Sampling)
* TECE (Threshold Event Counter Event)
* TS (Threshold Start Event)
* TE (Threshold End Event)
*
* Corresponding Raw Encoding bits:
* sample [EM,SM]
* thresh_sel (TECE)
* thresh start (TS)
* thresh end (TE)
*/
EVENT(MEM_LOADS, 0x34340401e0);
EVENT(MEM_STORES, 0x343c0401e0);

410
arch/powerpc/perf/power10-pmu.c Normal file
View File

@ -0,0 +1,410 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Performance counter support for POWER10 processors.
*
* Copyright 2020 Madhavan Srinivasan, IBM Corporation.
* Copyright 2020 Athira Rajeev, IBM Corporation.
*/
#define pr_fmt(fmt) "power10-pmu: " fmt
#include "isa207-common.h"
#include "internal.h"
/*
* Raw event encoding for Power10:
*
* 60 56 52 48 44 40 36 32
* | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
* | | [ ] [ src_match ] [ src_mask ] | [ ] [ l2l3_sel ] [ thresh_ctl ]
* | | | | | |
* | | *- IFM (Linux) | | thresh start/stop -*
* | *- BHRB (Linux) | src_sel
* *- EBB (Linux) *invert_bit
*
* 28 24 20 16 12 8 4 0
* | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
* [ ] [ sample ] [ ] [ ] [ pmc ] [unit ] [ ] m [ pmcxsel ]
* | | | | | |
* | | | | | *- mark
* | | | *- L1/L2/L3 cache_sel |
* | | sdar_mode |
* | *- sampling mode for marked events *- combine
* |
* *- thresh_sel
*
* Below uses IBM bit numbering.
*
* MMCR1[x:y] = unit (PMCxUNIT)
* MMCR1[24] = pmc1combine[0]
* MMCR1[25] = pmc1combine[1]
* MMCR1[26] = pmc2combine[0]
* MMCR1[27] = pmc2combine[1]
* MMCR1[28] = pmc3combine[0]
* MMCR1[29] = pmc3combine[1]
* MMCR1[30] = pmc4combine[0]
* MMCR1[31] = pmc4combine[1]
*
* if pmc == 3 and unit == 0 and pmcxsel[0:6] == 0b0101011
* MMCR1[20:27] = thresh_ctl
* else if pmc == 4 and unit == 0xf and pmcxsel[0:6] == 0b0101001
* MMCR1[20:27] = thresh_ctl
* else
* MMCRA[48:55] = thresh_ctl (THRESH START/END)
*
* if thresh_sel:
* MMCRA[45:47] = thresh_sel
*
* if l2l3_sel:
* MMCR2[56:60] = l2l3_sel[0:4]
*
* MMCR1[16] = cache_sel[0]
* MMCR1[17] = cache_sel[1]
*
* if mark:
* MMCRA[63] = 1 (SAMPLE_ENABLE)
* MMCRA[57:59] = sample[0:2] (RAND_SAMP_ELIG)
* MMCRA[61:62] = sample[3:4] (RAND_SAMP_MODE)
*
* if EBB and BHRB:
* MMCRA[32:33] = IFM
*
* MMCRA[SDAR_MODE] = sdar_mode[0:1]
*/
/*
* Some power10 event codes.
*/
#define EVENT(_name, _code) enum{_name = _code}
#include "power10-events-list.h"
#undef EVENT
/* MMCRA IFM bits - POWER10 */
#define POWER10_MMCRA_IFM1 0x0000000040000000UL
#define POWER10_MMCRA_BHRB_MASK 0x00000000C0000000UL
/* Table of alternatives, sorted by column 0 */
static const unsigned int power10_event_alternatives[][MAX_ALT] = {
{ PM_RUN_CYC_ALT, PM_RUN_CYC },
{ PM_RUN_INST_CMPL_ALT, PM_RUN_INST_CMPL },
};
static int power10_get_alternatives(u64 event, unsigned int flags, u64 alt[])
{
int num_alt = 0;
num_alt = isa207_get_alternatives(event, alt,
ARRAY_SIZE(power10_event_alternatives), flags,
power10_event_alternatives);
return num_alt;
}
GENERIC_EVENT_ATTR(cpu-cycles, PM_RUN_CYC);
GENERIC_EVENT_ATTR(instructions, PM_RUN_INST_CMPL);
GENERIC_EVENT_ATTR(branch-instructions, PM_BR_CMPL);
GENERIC_EVENT_ATTR(branch-misses, PM_BR_MPRED_CMPL);
GENERIC_EVENT_ATTR(cache-references, PM_LD_REF_L1);
GENERIC_EVENT_ATTR(cache-misses, PM_LD_MISS_L1);
GENERIC_EVENT_ATTR(mem-loads, MEM_LOADS);
GENERIC_EVENT_ATTR(mem-stores, MEM_STORES);
CACHE_EVENT_ATTR(L1-dcache-load-misses, PM_LD_MISS_L1);
CACHE_EVENT_ATTR(L1-dcache-loads, PM_LD_REF_L1);
CACHE_EVENT_ATTR(L1-dcache-prefetches, PM_LD_PREFETCH_CACHE_LINE_MISS);
CACHE_EVENT_ATTR(L1-dcache-store-misses, PM_ST_MISS_L1);
CACHE_EVENT_ATTR(L1-icache-load-misses, PM_L1_ICACHE_MISS);
CACHE_EVENT_ATTR(L1-icache-loads, PM_INST_FROM_L1);
CACHE_EVENT_ATTR(L1-icache-prefetches, PM_IC_PREF_REQ);
CACHE_EVENT_ATTR(LLC-load-misses, PM_DATA_FROM_L3MISS);
CACHE_EVENT_ATTR(LLC-loads, PM_DATA_FROM_L3);
CACHE_EVENT_ATTR(branch-load-misses, PM_BR_MPRED_CMPL);
CACHE_EVENT_ATTR(branch-loads, PM_BR_CMPL);
CACHE_EVENT_ATTR(dTLB-load-misses, PM_DTLB_MISS);
CACHE_EVENT_ATTR(iTLB-load-misses, PM_ITLB_MISS);
static struct attribute *power10_events_attr[] = {
GENERIC_EVENT_PTR(PM_RUN_CYC),
GENERIC_EVENT_PTR(PM_RUN_INST_CMPL),
GENERIC_EVENT_PTR(PM_BR_CMPL),
GENERIC_EVENT_PTR(PM_BR_MPRED_CMPL),
GENERIC_EVENT_PTR(PM_LD_REF_L1),
GENERIC_EVENT_PTR(PM_LD_MISS_L1),
GENERIC_EVENT_PTR(MEM_LOADS),
GENERIC_EVENT_PTR(MEM_STORES),
CACHE_EVENT_PTR(PM_LD_MISS_L1),
CACHE_EVENT_PTR(PM_LD_REF_L1),
CACHE_EVENT_PTR(PM_LD_PREFETCH_CACHE_LINE_MISS),
CACHE_EVENT_PTR(PM_ST_MISS_L1),
CACHE_EVENT_PTR(PM_L1_ICACHE_MISS),
CACHE_EVENT_PTR(PM_INST_FROM_L1),
CACHE_EVENT_PTR(PM_IC_PREF_REQ),
CACHE_EVENT_PTR(PM_DATA_FROM_L3MISS),
CACHE_EVENT_PTR(PM_DATA_FROM_L3),
CACHE_EVENT_PTR(PM_BR_MPRED_CMPL),
CACHE_EVENT_PTR(PM_BR_CMPL),
CACHE_EVENT_PTR(PM_DTLB_MISS),
CACHE_EVENT_PTR(PM_ITLB_MISS),
NULL
};
static struct attribute_group power10_pmu_events_group = {
.name = "events",
.attrs = power10_events_attr,
};
PMU_FORMAT_ATTR(event, "config:0-59");
PMU_FORMAT_ATTR(pmcxsel, "config:0-7");
PMU_FORMAT_ATTR(mark, "config:8");
PMU_FORMAT_ATTR(combine, "config:10-11");
PMU_FORMAT_ATTR(unit, "config:12-15");
PMU_FORMAT_ATTR(pmc, "config:16-19");
PMU_FORMAT_ATTR(cache_sel, "config:20-21");
PMU_FORMAT_ATTR(sdar_mode, "config:22-23");
PMU_FORMAT_ATTR(sample_mode, "config:24-28");
PMU_FORMAT_ATTR(thresh_sel, "config:29-31");
PMU_FORMAT_ATTR(thresh_stop, "config:32-35");
PMU_FORMAT_ATTR(thresh_start, "config:36-39");
PMU_FORMAT_ATTR(l2l3_sel, "config:40-44");
PMU_FORMAT_ATTR(src_sel, "config:45-46");
PMU_FORMAT_ATTR(invert_bit, "config:47");
PMU_FORMAT_ATTR(src_mask, "config:48-53");
PMU_FORMAT_ATTR(src_match, "config:54-59");
static struct attribute *power10_pmu_format_attr[] = {
&format_attr_event.attr,
&format_attr_pmcxsel.attr,
&format_attr_mark.attr,
&format_attr_combine.attr,
&format_attr_unit.attr,
&format_attr_pmc.attr,
&format_attr_cache_sel.attr,
&format_attr_sdar_mode.attr,
&format_attr_sample_mode.attr,
&format_attr_thresh_sel.attr,
&format_attr_thresh_stop.attr,
&format_attr_thresh_start.attr,
&format_attr_l2l3_sel.attr,
&format_attr_src_sel.attr,
&format_attr_invert_bit.attr,
&format_attr_src_mask.attr,
&format_attr_src_match.attr,
NULL,
};
static struct attribute_group power10_pmu_format_group = {
.name = "format",
.attrs = power10_pmu_format_attr,
};
static const struct attribute_group *power10_pmu_attr_groups[] = {
&power10_pmu_format_group,
&power10_pmu_events_group,
NULL,
};
static int power10_generic_events[] = {
[PERF_COUNT_HW_CPU_CYCLES] = PM_RUN_CYC,
[PERF_COUNT_HW_INSTRUCTIONS] = PM_RUN_INST_CMPL,
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = PM_BR_CMPL,
[PERF_COUNT_HW_BRANCH_MISSES] = PM_BR_MPRED_CMPL,
[PERF_COUNT_HW_CACHE_REFERENCES] = PM_LD_REF_L1,
[PERF_COUNT_HW_CACHE_MISSES] = PM_LD_MISS_L1,
};
static u64 power10_bhrb_filter_map(u64 branch_sample_type)
{
u64 pmu_bhrb_filter = 0;
/* BHRB and regular PMU events share the same privilege state
* filter configuration. BHRB is always recorded along with a
* regular PMU event. As the privilege state filter is handled
* in the basic PMC configuration of the accompanying regular
* PMU event, we ignore any separate BHRB specific request.
*/
/* No branch filter requested */
if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY)
return pmu_bhrb_filter;
/* Invalid branch filter options - HW does not support */
if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_RETURN)
return -1;
if (branch_sample_type & PERF_SAMPLE_BRANCH_IND_CALL)
return -1;
if (branch_sample_type & PERF_SAMPLE_BRANCH_CALL)
return -1;
if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_CALL) {
pmu_bhrb_filter |= POWER10_MMCRA_IFM1;
return pmu_bhrb_filter;
}
/* Every thing else is unsupported */
return -1;
}
static void power10_config_bhrb(u64 pmu_bhrb_filter)
{
pmu_bhrb_filter &= POWER10_MMCRA_BHRB_MASK;
/* Enable BHRB filter in PMU */
mtspr(SPRN_MMCRA, (mfspr(SPRN_MMCRA) | pmu_bhrb_filter));
}
#define C(x) PERF_COUNT_HW_CACHE_##x
/*
* Table of generalized cache-related events.
* 0 means not supported, -1 means nonsensical, other values
* are event codes.
*/
static u64 power10_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
[C(L1D)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = PM_LD_REF_L1,
[C(RESULT_MISS)] = PM_LD_MISS_L1,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = 0,
[C(RESULT_MISS)] = PM_ST_MISS_L1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = PM_LD_PREFETCH_CACHE_LINE_MISS,
[C(RESULT_MISS)] = 0,
},
},
[C(L1I)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = PM_INST_FROM_L1,
[C(RESULT_MISS)] = PM_L1_ICACHE_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = PM_INST_FROM_L1MISS,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = PM_IC_PREF_REQ,
[C(RESULT_MISS)] = 0,
},
},
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = PM_DATA_FROM_L3,
[C(RESULT_MISS)] = PM_DATA_FROM_L3MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = 0,
},
},
[C(DTLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0,
[C(RESULT_MISS)] = PM_DTLB_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
},
[C(ITLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = 0,
[C(RESULT_MISS)] = PM_ITLB_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
},
[C(BPU)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = PM_BR_CMPL,
[C(RESULT_MISS)] = PM_BR_MPRED_CMPL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
},
[C(NODE)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = -1,
[C(RESULT_MISS)] = -1,
},
},
};
#undef C
static struct power_pmu power10_pmu = {
.name = "POWER10",
.n_counter = MAX_PMU_COUNTERS,
.add_fields = ISA207_ADD_FIELDS,
.test_adder = ISA207_TEST_ADDER,
.group_constraint_mask = CNST_CACHE_PMC4_MASK,
.group_constraint_val = CNST_CACHE_PMC4_VAL,
.compute_mmcr = isa207_compute_mmcr,
.config_bhrb = power10_config_bhrb,
.bhrb_filter_map = power10_bhrb_filter_map,
.get_constraint = isa207_get_constraint,
.get_alternatives = power10_get_alternatives,
.get_mem_data_src = isa207_get_mem_data_src,
.get_mem_weight = isa207_get_mem_weight,
.disable_pmc = isa207_disable_pmc,
.flags = PPMU_HAS_SIER | PPMU_ARCH_207S |
PPMU_ARCH_31,
.n_generic = ARRAY_SIZE(power10_generic_events),
.generic_events = power10_generic_events,
.cache_events = &power10_cache_events,
.attr_groups = power10_pmu_attr_groups,
.bhrb_nr = 32,
};
int init_power10_pmu(void)
{
int rc;
/* Comes from cpu_specs[] */
if (!cur_cpu_spec->oprofile_cpu_type ||
strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power10"))
return -ENODEV;
rc = register_power_pmu(&power10_pmu);
if (rc)
return rc;
/* Tell userspace that EBB is supported */
cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_EBB;
return 0;
}