477 строки
13 KiB
C
477 строки
13 KiB
C
/*
|
||
* Performance counter support for POWER9 processors.
|
||
*
|
||
* Copyright 2009 Paul Mackerras, IBM Corporation.
|
||
* Copyright 2013 Michael Ellerman, IBM Corporation.
|
||
* Copyright 2016 Madhavan Srinivasan, IBM Corporation.
|
||
*
|
||
* This program is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU General Public License
|
||
* as published by the Free Software Foundation; either version
|
||
* 2 of the License, or later version.
|
||
*/
|
||
|
||
#define pr_fmt(fmt) "power9-pmu: " fmt
|
||
|
||
#include "isa207-common.h"
|
||
|
||
/*
|
||
* Raw event encoding for Power9:
|
||
*
|
||
* 60 56 52 48 44 40 36 32
|
||
* | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
|
||
* | | [ ] [ ] [ thresh_cmp ] [ thresh_ctl ]
|
||
* | | | | |
|
||
* | | *- IFM (Linux) | thresh start/stop -*
|
||
* | *- BHRB (Linux) *sm
|
||
* *- EBB (Linux)
|
||
*
|
||
* 28 24 20 16 12 8 4 0
|
||
* | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
|
||
* [ ] [ sample ] [cache] [ pmc ] [unit ] [] m [ pmcxsel ]
|
||
* | | | | |
|
||
* | | | | *- mark
|
||
* | | *- L1/L2/L3 cache_sel |
|
||
* | | |
|
||
* | *- 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 thresh_cmp:
|
||
* MMCRA[9:11] = thresh_cmp[0:2]
|
||
* MMCRA[12:18] = thresh_cmp[3:9]
|
||
*
|
||
* if unit == 6 or unit == 7
|
||
* MMCRC[53:55] = cache_sel[1:3] (L2EVENT_SEL)
|
||
* else if unit == 8 or unit == 9:
|
||
* if cache_sel[0] == 0: # L3 bank
|
||
* MMCRC[47:49] = cache_sel[1:3] (L3EVENT_SEL0)
|
||
* else if cache_sel[0] == 1:
|
||
* MMCRC[50:51] = cache_sel[2:3] (L3EVENT_SEL1)
|
||
* else if cache_sel[1]: # L1 event
|
||
* MMCR1[16] = cache_sel[2]
|
||
* MMCR1[17] = cache_sel[3]
|
||
*
|
||
* 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] = sm
|
||
*/
|
||
|
||
/*
|
||
* Some power9 event codes.
|
||
*/
|
||
#define EVENT(_name, _code) _name = _code,
|
||
|
||
enum {
|
||
#include "power9-events-list.h"
|
||
};
|
||
|
||
#undef EVENT
|
||
|
||
/* MMCRA IFM bits - POWER9 */
|
||
#define POWER9_MMCRA_IFM1 0x0000000040000000UL
|
||
#define POWER9_MMCRA_IFM2 0x0000000080000000UL
|
||
#define POWER9_MMCRA_IFM3 0x00000000C0000000UL
|
||
|
||
/* Nasty Power9 specific hack */
|
||
#define PVR_POWER9_CUMULUS 0x00002000
|
||
|
||
/* PowerISA v2.07 format attribute structure*/
|
||
extern struct attribute_group isa207_pmu_format_group;
|
||
|
||
int p9_dd21_bl_ev[] = {
|
||
PM_MRK_ST_DONE_L2,
|
||
PM_RADIX_PWC_L1_HIT,
|
||
PM_FLOP_CMPL,
|
||
PM_MRK_NTF_FIN,
|
||
PM_RADIX_PWC_L2_HIT,
|
||
PM_IFETCH_THROTTLE,
|
||
PM_MRK_L2_TM_ST_ABORT_SISTER,
|
||
PM_RADIX_PWC_L3_HIT,
|
||
PM_RUN_CYC_SMT2_MODE,
|
||
PM_TM_TX_PASS_RUN_INST,
|
||
PM_DISP_HELD_SYNC_HOLD,
|
||
};
|
||
|
||
int p9_dd22_bl_ev[] = {
|
||
PM_DTLB_MISS_16G,
|
||
PM_DERAT_MISS_2M,
|
||
PM_DTLB_MISS_2M,
|
||
PM_MRK_DTLB_MISS_1G,
|
||
PM_DTLB_MISS_4K,
|
||
PM_DERAT_MISS_1G,
|
||
PM_MRK_DERAT_MISS_2M,
|
||
PM_MRK_DTLB_MISS_4K,
|
||
PM_MRK_DTLB_MISS_16G,
|
||
PM_DTLB_MISS_64K,
|
||
PM_MRK_DERAT_MISS_1G,
|
||
PM_MRK_DTLB_MISS_64K,
|
||
PM_DISP_HELD_SYNC_HOLD,
|
||
PM_DTLB_MISS_16M,
|
||
PM_DTLB_MISS_1G,
|
||
PM_MRK_DTLB_MISS_16M,
|
||
};
|
||
|
||
/* Table of alternatives, sorted by column 0 */
|
||
static const unsigned int power9_event_alternatives[][MAX_ALT] = {
|
||
{ PM_INST_DISP, PM_INST_DISP_ALT },
|
||
{ PM_RUN_CYC_ALT, PM_RUN_CYC },
|
||
{ PM_RUN_INST_CMPL_ALT, PM_RUN_INST_CMPL },
|
||
{ PM_LD_MISS_L1, PM_LD_MISS_L1_ALT },
|
||
{ PM_BR_2PATH, PM_BR_2PATH_ALT },
|
||
};
|
||
|
||
static int power9_get_alternatives(u64 event, unsigned int flags, u64 alt[])
|
||
{
|
||
int num_alt = 0;
|
||
|
||
num_alt = isa207_get_alternatives(event, alt,
|
||
ARRAY_SIZE(power9_event_alternatives), flags,
|
||
power9_event_alternatives);
|
||
|
||
return num_alt;
|
||
}
|
||
|
||
GENERIC_EVENT_ATTR(cpu-cycles, PM_CYC);
|
||
GENERIC_EVENT_ATTR(stalled-cycles-frontend, PM_ICT_NOSLOT_CYC);
|
||
GENERIC_EVENT_ATTR(stalled-cycles-backend, PM_CMPLU_STALL);
|
||
GENERIC_EVENT_ATTR(instructions, PM_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_FIN);
|
||
|
||
CACHE_EVENT_ATTR(L1-dcache-load-misses, PM_LD_MISS_L1_FIN);
|
||
CACHE_EVENT_ATTR(L1-dcache-loads, PM_LD_REF_L1);
|
||
CACHE_EVENT_ATTR(L1-dcache-prefetches, PM_L1_PREF);
|
||
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_WRITE);
|
||
CACHE_EVENT_ATTR(LLC-load-misses, PM_DATA_FROM_L3MISS);
|
||
CACHE_EVENT_ATTR(LLC-loads, PM_DATA_FROM_L3);
|
||
CACHE_EVENT_ATTR(LLC-prefetches, PM_L3_PREF_ALL);
|
||
CACHE_EVENT_ATTR(LLC-store-misses, PM_L2_ST_MISS);
|
||
CACHE_EVENT_ATTR(LLC-stores, PM_L2_ST);
|
||
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 *power9_events_attr[] = {
|
||
GENERIC_EVENT_PTR(PM_CYC),
|
||
GENERIC_EVENT_PTR(PM_ICT_NOSLOT_CYC),
|
||
GENERIC_EVENT_PTR(PM_CMPLU_STALL),
|
||
GENERIC_EVENT_PTR(PM_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_FIN),
|
||
CACHE_EVENT_PTR(PM_LD_MISS_L1_FIN),
|
||
CACHE_EVENT_PTR(PM_LD_REF_L1),
|
||
CACHE_EVENT_PTR(PM_L1_PREF),
|
||
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_WRITE),
|
||
CACHE_EVENT_PTR(PM_DATA_FROM_L3MISS),
|
||
CACHE_EVENT_PTR(PM_DATA_FROM_L3),
|
||
CACHE_EVENT_PTR(PM_L3_PREF_ALL),
|
||
CACHE_EVENT_PTR(PM_L2_ST_MISS),
|
||
CACHE_EVENT_PTR(PM_L2_ST),
|
||
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 power9_pmu_events_group = {
|
||
.name = "events",
|
||
.attrs = power9_events_attr,
|
||
};
|
||
|
||
PMU_FORMAT_ATTR(event, "config:0-51");
|
||
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:20-23");
|
||
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(thresh_cmp, "config:40-49");
|
||
PMU_FORMAT_ATTR(sdar_mode, "config:50-51");
|
||
|
||
static struct attribute *power9_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_sample_mode.attr,
|
||
&format_attr_thresh_sel.attr,
|
||
&format_attr_thresh_stop.attr,
|
||
&format_attr_thresh_start.attr,
|
||
&format_attr_thresh_cmp.attr,
|
||
&format_attr_sdar_mode.attr,
|
||
NULL,
|
||
};
|
||
|
||
static struct attribute_group power9_pmu_format_group = {
|
||
.name = "format",
|
||
.attrs = power9_pmu_format_attr,
|
||
};
|
||
|
||
static const struct attribute_group *power9_pmu_attr_groups[] = {
|
||
&power9_pmu_format_group,
|
||
&power9_pmu_events_group,
|
||
NULL,
|
||
};
|
||
|
||
static int power9_generic_events[] = {
|
||
[PERF_COUNT_HW_CPU_CYCLES] = PM_CYC,
|
||
[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = PM_ICT_NOSLOT_CYC,
|
||
[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = PM_CMPLU_STALL,
|
||
[PERF_COUNT_HW_INSTRUCTIONS] = PM_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_FIN,
|
||
};
|
||
|
||
static u64 power9_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 |= POWER9_MMCRA_IFM1;
|
||
return pmu_bhrb_filter;
|
||
}
|
||
|
||
/* Every thing else is unsupported */
|
||
return -1;
|
||
}
|
||
|
||
static void power9_config_bhrb(u64 pmu_bhrb_filter)
|
||
{
|
||
/* 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 int power9_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_FIN,
|
||
},
|
||
[ C(OP_WRITE) ] = {
|
||
[ C(RESULT_ACCESS) ] = 0,
|
||
[ C(RESULT_MISS) ] = PM_ST_MISS_L1,
|
||
},
|
||
[ C(OP_PREFETCH) ] = {
|
||
[ C(RESULT_ACCESS) ] = PM_L1_PREF,
|
||
[ 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_L1_DEMAND_WRITE,
|
||
[ C(RESULT_MISS) ] = -1,
|
||
},
|
||
[ C(OP_PREFETCH) ] = {
|
||
[ C(RESULT_ACCESS) ] = PM_IC_PREF_WRITE,
|
||
[ 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) ] = PM_L2_ST,
|
||
[ C(RESULT_MISS) ] = PM_L2_ST_MISS,
|
||
},
|
||
[ C(OP_PREFETCH) ] = {
|
||
[ C(RESULT_ACCESS) ] = PM_L3_PREF_ALL,
|
||
[ 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 power9_pmu = {
|
||
.name = "POWER9",
|
||
.n_counter = MAX_PMU_COUNTERS,
|
||
.add_fields = ISA207_ADD_FIELDS,
|
||
.test_adder = ISA207_TEST_ADDER,
|
||
.compute_mmcr = isa207_compute_mmcr,
|
||
.config_bhrb = power9_config_bhrb,
|
||
.bhrb_filter_map = power9_bhrb_filter_map,
|
||
.get_constraint = isa207_get_constraint,
|
||
.get_alternatives = power9_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,
|
||
.n_generic = ARRAY_SIZE(power9_generic_events),
|
||
.generic_events = power9_generic_events,
|
||
.cache_events = &power9_cache_events,
|
||
.attr_groups = power9_pmu_attr_groups,
|
||
.bhrb_nr = 32,
|
||
};
|
||
|
||
static int __init init_power9_pmu(void)
|
||
{
|
||
int rc = 0;
|
||
unsigned int pvr = mfspr(SPRN_PVR);
|
||
|
||
/* Comes from cpu_specs[] */
|
||
if (!cur_cpu_spec->oprofile_cpu_type ||
|
||
strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power9"))
|
||
return -ENODEV;
|
||
|
||
/* Blacklist events */
|
||
if (!(pvr & PVR_POWER9_CUMULUS)) {
|
||
if ((PVR_CFG(pvr) == 2) && (PVR_MIN(pvr) == 1)) {
|
||
power9_pmu.blacklist_ev = p9_dd21_bl_ev;
|
||
power9_pmu.n_blacklist_ev = ARRAY_SIZE(p9_dd21_bl_ev);
|
||
} else if ((PVR_CFG(pvr) == 2) && (PVR_MIN(pvr) == 2)) {
|
||
power9_pmu.blacklist_ev = p9_dd22_bl_ev;
|
||
power9_pmu.n_blacklist_ev = ARRAY_SIZE(p9_dd22_bl_ev);
|
||
}
|
||
}
|
||
|
||
rc = register_power_pmu(&power9_pmu);
|
||
if (rc)
|
||
return rc;
|
||
|
||
/* Tell userspace that EBB is supported */
|
||
cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_EBB;
|
||
|
||
return 0;
|
||
}
|
||
early_initcall(init_power9_pmu);
|