diff options
Diffstat (limited to 'arch/powerpc/perf')
27 files changed, 641 insertions, 155 deletions
diff --git a/arch/powerpc/perf/8xx-pmu.c b/arch/powerpc/perf/8xx-pmu.c index e38f74e9e7a4..19124b0b171a 100644 --- a/arch/powerpc/perf/8xx-pmu.c +++ b/arch/powerpc/perf/8xx-pmu.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance event support - PPC 8xx * * Copyright 2016 Christophe Leroy, CS Systemes d'Information - * - * 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 (at your option) any later version. */ #include <linux/kernel.h> diff --git a/arch/powerpc/perf/Makefile b/arch/powerpc/perf/Makefile index ab26df5bacb9..c155dcbb8691 100644 --- a/arch/powerpc/perf/Makefile +++ b/arch/powerpc/perf/Makefile @@ -5,7 +5,8 @@ obj-$(CONFIG_PERF_EVENTS) += callchain.o perf_regs.o obj-$(CONFIG_PPC_PERF_CTRS) += core-book3s.o bhrb.o obj64-$(CONFIG_PPC_PERF_CTRS) += ppc970-pmu.o power5-pmu.o \ power5+-pmu.o power6-pmu.o power7-pmu.o \ - isa207-common.o power8-pmu.o power9-pmu.o + isa207-common.o power8-pmu.o power9-pmu.o \ + generic-compat-pmu.o obj32-$(CONFIG_PPC_PERF_CTRS) += mpc7450-pmu.o obj-$(CONFIG_PPC_POWERNV) += imc-pmu.o diff --git a/arch/powerpc/perf/bhrb.S b/arch/powerpc/perf/bhrb.S index d85f9a58ddbc..1aa3259716b8 100644 --- a/arch/powerpc/perf/bhrb.S +++ b/arch/powerpc/perf/bhrb.S @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Basic assembly code to read BHRB entries * * Copyright 2013 Anshuman Khandual, 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 (at your option) any later version. */ #include <asm/ppc_asm.h> #include <asm/ppc-opcode.h> diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c index 0af051a1974e..c84bbd4298a0 100644 --- a/arch/powerpc/perf/callchain.c +++ b/arch/powerpc/perf/callchain.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter callchain support - powerpc architecture code * * Copyright © 2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/kernel.h> #include <linux/sched.h> diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index b0723002a396..7e129f62cd67 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance event support - powerpc architecture code * * Copyright 2008-2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/kernel.h> #include <linux/sched.h> @@ -22,6 +18,10 @@ #include <asm/ptrace.h> #include <asm/code-patching.h> +#ifdef CONFIG_PPC64 +#include "internal.h" +#endif + #define BHRB_MAX_ENTRIES 32 #define BHRB_TARGET 0x0000000000000002 #define BHRB_PREDICTION 0x0000000000000001 @@ -2294,3 +2294,27 @@ int register_power_pmu(struct power_pmu *pmu) power_pmu_prepare_cpu, NULL); return 0; } + +#ifdef CONFIG_PPC64 +static int __init init_ppc64_pmu(void) +{ + /* run through all the pmu drivers one at a time */ + if (!init_power5_pmu()) + return 0; + else if (!init_power5p_pmu()) + return 0; + else if (!init_power6_pmu()) + return 0; + else if (!init_power7_pmu()) + return 0; + else if (!init_power8_pmu()) + return 0; + else if (!init_power9_pmu()) + return 0; + else if (!init_ppc970_pmu()) + return 0; + else + return init_generic_compat_pmu(); +} +early_initcall(init_ppc64_pmu); +#endif diff --git a/arch/powerpc/perf/core-fsl-emb.c b/arch/powerpc/perf/core-fsl-emb.c index ba485844d506..e0e7e276bfd2 100644 --- a/arch/powerpc/perf/core-fsl-emb.c +++ b/arch/powerpc/perf/core-fsl-emb.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance event support - Freescale Embedded Performance Monitor * * Copyright 2008-2009 Paul Mackerras, IBM Corporation. * Copyright 2010 Freescale Semiconductor, Inc. - * - * 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 (at your option) any later version. */ #include <linux/kernel.h> #include <linux/sched.h> diff --git a/arch/powerpc/perf/e500-pmu.c b/arch/powerpc/perf/e500-pmu.c index fb664929f5da..a59c33bed32a 100644 --- a/arch/powerpc/perf/e500-pmu.c +++ b/arch/powerpc/perf/e500-pmu.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for e500 family processors. * * Copyright 2008-2009 Paul Mackerras, IBM Corporation. * Copyright 2010 Freescale Semiconductor, Inc. - * - * 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 (at your option) any later version. */ #include <linux/string.h> #include <linux/perf_event.h> diff --git a/arch/powerpc/perf/e6500-pmu.c b/arch/powerpc/perf/e6500-pmu.c index 3d877aa777b5..44ad65da82ed 100644 --- a/arch/powerpc/perf/e6500-pmu.c +++ b/arch/powerpc/perf/e6500-pmu.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for e6500 family processors. * @@ -5,11 +6,6 @@ * Based on e500-pmu.c * Copyright 2013 Freescale Semiconductor, Inc. * Copyright 2008-2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/string.h> diff --git a/arch/powerpc/perf/generic-compat-pmu.c b/arch/powerpc/perf/generic-compat-pmu.c new file mode 100644 index 000000000000..5e5a54d5588e --- /dev/null +++ b/arch/powerpc/perf/generic-compat-pmu.c @@ -0,0 +1,234 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Copyright 2019 Madhavan Srinivasan, IBM Corporation. + +#define pr_fmt(fmt) "generic-compat-pmu: " fmt + +#include "isa207-common.h" + +/* + * Raw event encoding: + * + * 60 56 52 48 44 40 36 32 + * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | + * + * 28 24 20 16 12 8 4 0 + * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | + * [ pmc ] [unit ] [ ] m [ pmcxsel ] + * | | + * | *- mark + * | + * | + * *- combine + * + * 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] + * + */ + +/* + * Some power9 event codes. + */ +#define EVENT(_name, _code) _name = _code, + +enum { +EVENT(PM_CYC, 0x0001e) +EVENT(PM_INST_CMPL, 0x00002) +}; + +#undef EVENT + +GENERIC_EVENT_ATTR(cpu-cycles, PM_CYC); +GENERIC_EVENT_ATTR(instructions, PM_INST_CMPL); + +static struct attribute *generic_compat_events_attr[] = { + GENERIC_EVENT_PTR(PM_CYC), + GENERIC_EVENT_PTR(PM_INST_CMPL), + NULL +}; + +static struct attribute_group generic_compat_pmu_events_group = { + .name = "events", + .attrs = generic_compat_events_attr, +}; + +PMU_FORMAT_ATTR(event, "config:0-19"); +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"); + +static struct attribute *generic_compat_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, + NULL, +}; + +static struct attribute_group generic_compat_pmu_format_group = { + .name = "format", + .attrs = generic_compat_pmu_format_attr, +}; + +static const struct attribute_group *generic_compat_pmu_attr_groups[] = { + &generic_compat_pmu_format_group, + &generic_compat_pmu_events_group, + NULL, +}; + +static int compat_generic_events[] = { + [PERF_COUNT_HW_CPU_CYCLES] = PM_CYC, + [PERF_COUNT_HW_INSTRUCTIONS] = PM_INST_CMPL, +}; + +#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 generic_compat_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { + [ C(L1D) ] = { + [ C(OP_READ) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + [ C(OP_WRITE) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + [ C(OP_PREFETCH) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + }, + [ C(L1I) ] = { + [ C(OP_READ) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + [ C(OP_WRITE) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = -1, + }, + [ C(OP_PREFETCH) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + }, + [ C(LL) ] = { + [ C(OP_READ) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + [ C(OP_WRITE) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + [ C(OP_PREFETCH) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + }, + [ C(DTLB) ] = { + [ C(OP_READ) ] = { + [ C(RESULT_ACCESS) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + [ 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) ] = 0, + }, + [ 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) ] = 0, + [ C(RESULT_MISS) ] = 0, + }, + [ 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 generic_compat_pmu = { + .name = "GENERIC_COMPAT", + .n_counter = MAX_PMU_COUNTERS, + .add_fields = ISA207_ADD_FIELDS, + .test_adder = ISA207_TEST_ADDER, + .compute_mmcr = isa207_compute_mmcr, + .get_constraint = isa207_get_constraint, + .disable_pmc = isa207_disable_pmc, + .flags = PPMU_HAS_SIER | PPMU_ARCH_207S, + .n_generic = ARRAY_SIZE(compat_generic_events), + .generic_events = compat_generic_events, + .cache_events = &generic_compat_cache_events, + .attr_groups = generic_compat_pmu_attr_groups, +}; + +int init_generic_compat_pmu(void) +{ + int rc = 0; + + rc = register_power_pmu(&generic_compat_pmu); + if (rc) + return rc; + + /* Tell userspace that EBB is supported */ + cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_EBB; + + return 0; +} diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index d2b8e6061933..faad5b315f49 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Hypervisor supplied "24x7" performance counter support * * Author: Cody P Schafer <cody@linux.vnet.ibm.com> * Copyright 2014 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 (at your option) any later version. */ #define pr_fmt(fmt) "hv-24x7: " fmt diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c index 735e77b09cdb..6884d16ec19b 100644 --- a/arch/powerpc/perf/hv-gpci.c +++ b/arch/powerpc/perf/hv-gpci.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Hypervisor supplied "gpci" ("get performance counter info") performance * counter support * * Author: Cody P Schafer <cody@linux.vnet.ibm.com> * Copyright 2014 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 (at your option) any later version. */ #define pr_fmt(fmt) "hv-gpci: " fmt diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c index b1c37cc3fa98..3bdfc1e32096 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * In-Memory Collection (IMC) Performance Monitor counter support. * * Copyright (C) 2017 Madhavan Srinivasan, IBM Corporation. * (C) 2017 Anju T Sudhakar, IBM Corporation. * (C) 2017 Hemant K Shaw, 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. */ #include <linux/perf_event.h> #include <linux/slab.h> @@ -43,12 +39,17 @@ static DEFINE_PER_CPU(u64 *, thread_imc_mem); static struct imc_pmu *thread_imc_pmu; static int thread_imc_mem_size; +/* Trace IMC data structures */ +static DEFINE_PER_CPU(u64 *, trace_imc_mem); +static struct imc_pmu_ref *trace_imc_refc; +static int trace_imc_mem_size; + static struct imc_pmu *imc_event_to_pmu(struct perf_event *event) { return container_of(event->pmu, struct imc_pmu, pmu); } -PMU_FORMAT_ATTR(event, "config:0-40"); +PMU_FORMAT_ATTR(event, "config:0-61"); PMU_FORMAT_ATTR(offset, "config:0-31"); PMU_FORMAT_ATTR(rvalue, "config:32"); PMU_FORMAT_ATTR(mode, "config:33-40"); @@ -65,6 +66,25 @@ static struct attribute_group imc_format_group = { .attrs = imc_format_attrs, }; +/* Format attribute for imc trace-mode */ +PMU_FORMAT_ATTR(cpmc_reserved, "config:0-19"); +PMU_FORMAT_ATTR(cpmc_event, "config:20-27"); +PMU_FORMAT_ATTR(cpmc_samplesel, "config:28-29"); +PMU_FORMAT_ATTR(cpmc_load, "config:30-61"); +static struct attribute *trace_imc_format_attrs[] = { + &format_attr_event.attr, + &format_attr_cpmc_reserved.attr, + &format_attr_cpmc_event.attr, + &format_attr_cpmc_samplesel.attr, + &format_attr_cpmc_load.attr, + NULL, +}; + +static struct attribute_group trace_imc_format_group = { +.name = "format", +.attrs = trace_imc_format_attrs, +}; + /* Get the cpumask printed to a buffer "buf" */ static ssize_t imc_pmu_cpumask_get_attr(struct device *dev, struct device_attribute *attr, @@ -487,6 +507,11 @@ static int nest_imc_event_init(struct perf_event *event) * Get the base memory addresss for this cpu. */ chip_id = cpu_to_chip_id(event->cpu); + + /* Return, if chip_id is not valid */ + if (chip_id < 0) + return -ENODEV; + pcni = pmu->mem_info; do { if (pcni->id == chip_id) { @@ -494,7 +519,7 @@ static int nest_imc_event_init(struct perf_event *event) break; } pcni++; - } while (pcni); + } while (pcni->vbase != 0); if (!flag) return -ENODEV; @@ -788,8 +813,11 @@ static int core_imc_event_init(struct perf_event *event) } /* - * Allocates a page of memory for each of the online cpus, and write the - * physical base address of that page to the LDBAR for that cpu. + * Allocates a page of memory for each of the online cpus, and load + * LDBAR with 0. + * The physical base address of the page allocated for a cpu will be + * written to the LDBAR for that cpu, when the thread-imc event + * is added. * * LDBAR Register Layout: * @@ -807,7 +835,7 @@ static int core_imc_event_init(struct perf_event *event) */ static int thread_imc_mem_alloc(int cpu_id, int size) { - u64 ldbar_value, *local_mem = per_cpu(thread_imc_mem, cpu_id); + u64 *local_mem = per_cpu(thread_imc_mem, cpu_id); int nid = cpu_to_node(cpu_id); if (!local_mem) { @@ -824,9 +852,7 @@ static int thread_imc_mem_alloc(int cpu_id, int size) per_cpu(thread_imc_mem, cpu_id) = local_mem; } - ldbar_value = ((u64)local_mem & THREAD_IMC_LDBAR_MASK) | THREAD_IMC_ENABLE; - - mtspr(SPRN_LDBAR, ldbar_value); + mtspr(SPRN_LDBAR, 0); return 0; } @@ -858,6 +884,9 @@ static int thread_imc_event_init(struct perf_event *event) if (event->attr.type != event->pmu->type) return -ENOENT; + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + /* Sampling not supported */ if (event->hw.sample_period) return -EINVAL; @@ -977,6 +1006,7 @@ static int thread_imc_event_add(struct perf_event *event, int flags) { int core_id; struct imc_pmu_ref *ref; + u64 ldbar_value, *local_mem = per_cpu(thread_imc_mem, smp_processor_id()); if (flags & PERF_EF_START) imc_event_start(event, flags); @@ -985,6 +1015,9 @@ static int thread_imc_event_add(struct perf_event *event, int flags) return -EINVAL; core_id = smp_processor_id() / threads_per_core; + ldbar_value = ((u64)local_mem & THREAD_IMC_LDBAR_MASK) | THREAD_IMC_ENABLE; + mtspr(SPRN_LDBAR, ldbar_value); + /* * imc pmus are enabled only when it is used. * See if this is triggered for the first time. @@ -1016,11 +1049,7 @@ static void thread_imc_event_del(struct perf_event *event, int flags) int core_id; struct imc_pmu_ref *ref; - /* - * Take a snapshot and calculate the delta and update - * the event counter values. - */ - imc_event_update(event); + mtspr(SPRN_LDBAR, 0); core_id = smp_processor_id() / threads_per_core; ref = &core_imc_refc[core_id]; @@ -1039,6 +1068,240 @@ static void thread_imc_event_del(struct perf_event *event, int flags) ref->refc = 0; } mutex_unlock(&ref->lock); + /* + * Take a snapshot and calculate the delta and update + * the event counter values. + */ + imc_event_update(event); +} + +/* + * Allocate a page of memory for each cpu, and load LDBAR with 0. + */ +static int trace_imc_mem_alloc(int cpu_id, int size) +{ + u64 *local_mem = per_cpu(trace_imc_mem, cpu_id); + int phys_id = cpu_to_node(cpu_id), rc = 0; + int core_id = (cpu_id / threads_per_core); + + if (!local_mem) { + local_mem = page_address(alloc_pages_node(phys_id, + GFP_KERNEL | __GFP_ZERO | __GFP_THISNODE | + __GFP_NOWARN, get_order(size))); + if (!local_mem) + return -ENOMEM; + per_cpu(trace_imc_mem, cpu_id) = local_mem; + + /* Initialise the counters for trace mode */ + rc = opal_imc_counters_init(OPAL_IMC_COUNTERS_TRACE, __pa((void *)local_mem), + get_hard_smp_processor_id(cpu_id)); + if (rc) { + pr_info("IMC:opal init failed for trace imc\n"); + return rc; + } + } + + /* Init the mutex, if not already */ + trace_imc_refc[core_id].id = core_id; + mutex_init(&trace_imc_refc[core_id].lock); + + mtspr(SPRN_LDBAR, 0); + return 0; +} + +static int ppc_trace_imc_cpu_online(unsigned int cpu) +{ + return trace_imc_mem_alloc(cpu, trace_imc_mem_size); +} + +static int ppc_trace_imc_cpu_offline(unsigned int cpu) +{ + mtspr(SPRN_LDBAR, 0); + return 0; +} + +static int trace_imc_cpu_init(void) +{ + return cpuhp_setup_state(CPUHP_AP_PERF_POWERPC_TRACE_IMC_ONLINE, + "perf/powerpc/imc_trace:online", + ppc_trace_imc_cpu_online, + ppc_trace_imc_cpu_offline); +} + +static u64 get_trace_imc_event_base_addr(void) +{ + return (u64)per_cpu(trace_imc_mem, smp_processor_id()); +} + +/* + * Function to parse trace-imc data obtained + * and to prepare the perf sample. + */ +static int trace_imc_prepare_sample(struct trace_imc_data *mem, + struct perf_sample_data *data, + u64 *prev_tb, + struct perf_event_header *header, + struct perf_event *event) +{ + /* Sanity checks for a valid record */ + if (be64_to_cpu(READ_ONCE(mem->tb1)) > *prev_tb) + *prev_tb = be64_to_cpu(READ_ONCE(mem->tb1)); + else + return -EINVAL; + + if ((be64_to_cpu(READ_ONCE(mem->tb1)) & IMC_TRACE_RECORD_TB1_MASK) != + be64_to_cpu(READ_ONCE(mem->tb2))) + return -EINVAL; + + /* Prepare perf sample */ + data->ip = be64_to_cpu(READ_ONCE(mem->ip)); + data->period = event->hw.last_period; + + header->type = PERF_RECORD_SAMPLE; + header->size = sizeof(*header) + event->header_size; + header->misc = 0; + + if (is_kernel_addr(data->ip)) + header->misc |= PERF_RECORD_MISC_KERNEL; + else + header->misc |= PERF_RECORD_MISC_USER; + + perf_event_header__init_id(header, data, event); + + return 0; +} + +static void dump_trace_imc_data(struct perf_event *event) +{ + struct trace_imc_data *mem; + int i, ret; + u64 prev_tb = 0; + + mem = (struct trace_imc_data *)get_trace_imc_event_base_addr(); + for (i = 0; i < (trace_imc_mem_size / sizeof(struct trace_imc_data)); + i++, mem++) { + struct perf_sample_data data; + struct perf_event_header header; + + ret = trace_imc_prepare_sample(mem, &data, &prev_tb, &header, event); + if (ret) /* Exit, if not a valid record */ + break; + else { + /* If this is a valid record, create the sample */ + struct perf_output_handle handle; + + if (perf_output_begin(&handle, event, header.size)) + return; + + perf_output_sample(&handle, &header, &data, event); + perf_output_end(&handle); + } + } +} + +static int trace_imc_event_add(struct perf_event *event, int flags) +{ + int core_id = smp_processor_id() / threads_per_core; + struct imc_pmu_ref *ref = NULL; + u64 local_mem, ldbar_value; + + /* Set trace-imc bit in ldbar and load ldbar with per-thread memory address */ + local_mem = get_trace_imc_event_base_addr(); + ldbar_value = ((u64)local_mem & THREAD_IMC_LDBAR_MASK) | TRACE_IMC_ENABLE; + + if (core_imc_refc) + ref = &core_imc_refc[core_id]; + if (!ref) { + /* If core-imc is not enabled, use trace-imc reference count */ + if (trace_imc_refc) + ref = &trace_imc_refc[core_id]; + if (!ref) + return -EINVAL; + } + mtspr(SPRN_LDBAR, ldbar_value); + mutex_lock(&ref->lock); + if (ref->refc == 0) { + if (opal_imc_counters_start(OPAL_IMC_COUNTERS_TRACE, + get_hard_smp_processor_id(smp_processor_id()))) { + mutex_unlock(&ref->lock); + pr_err("trace-imc: Unable to start the counters for core %d\n", core_id); + mtspr(SPRN_LDBAR, 0); + return -EINVAL; + } + } + ++ref->refc; + mutex_unlock(&ref->lock); + + return 0; +} + +static void trace_imc_event_read(struct perf_event *event) +{ + return; +} + +static void trace_imc_event_stop(struct perf_event *event, int flags) +{ + u64 local_mem = get_trace_imc_event_base_addr(); + dump_trace_imc_data(event); + memset((void *)local_mem, 0, sizeof(u64)); +} + +static void trace_imc_event_start(struct perf_event *event, int flags) +{ + return; +} + +static void trace_imc_event_del(struct perf_event *event, int flags) +{ + int core_id = smp_processor_id() / threads_per_core; + struct imc_pmu_ref *ref = NULL; + + if (core_imc_refc) + ref = &core_imc_refc[core_id]; + if (!ref) { + /* If core-imc is not enabled, use trace-imc reference count */ + if (trace_imc_refc) + ref = &trace_imc_refc[core_id]; + if (!ref) + return; + } + mtspr(SPRN_LDBAR, 0); + mutex_lock(&ref->lock); + ref->refc--; + if (ref->refc == 0) { + if (opal_imc_counters_stop(OPAL_IMC_COUNTERS_TRACE, + get_hard_smp_processor_id(smp_processor_id()))) { + mutex_unlock(&ref->lock); + pr_err("trace-imc: Unable to stop the counters for core %d\n", core_id); + return; + } + } else if (ref->refc < 0) { + ref->refc = 0; + } + mutex_unlock(&ref->lock); + trace_imc_event_stop(event, flags); +} + +static int trace_imc_event_init(struct perf_event *event) +{ + struct task_struct *target; + + if (event->attr.type != event->pmu->type) + return -ENOENT; + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + /* Return if this is a couting event */ + if (event->attr.sample_period == 0) + return -ENOENT; + + event->hw.idx = -1; + target = event->hw.target; + + event->pmu->task_ctx_nr = perf_hw_context; + return 0; } /* update_pmu_ops : Populate the appropriate operations for "pmu" */ @@ -1071,6 +1334,14 @@ static int update_pmu_ops(struct imc_pmu *pmu) pmu->pmu.cancel_txn = thread_imc_pmu_cancel_txn; pmu->pmu.commit_txn = thread_imc_pmu_commit_txn; break; + case IMC_DOMAIN_TRACE: + pmu->pmu.event_init = trace_imc_event_init; + pmu->pmu.add = trace_imc_event_add; + pmu->pmu.del = trace_imc_event_del; + pmu->pmu.start = trace_imc_event_start; + pmu->pmu.stop = trace_imc_event_stop; + pmu->pmu.read = trace_imc_event_read; + pmu->attr_groups[IMC_FORMAT_ATTR] = &trace_imc_format_group; default: break; } @@ -1163,6 +1434,18 @@ static void cleanup_all_thread_imc_memory(void) } } +static void cleanup_all_trace_imc_memory(void) +{ + int i, order = get_order(trace_imc_mem_size); + + for_each_online_cpu(i) { + if (per_cpu(trace_imc_mem, i)) + free_pages((u64)per_cpu(trace_imc_mem, i), order); + + } + kfree(trace_imc_refc); +} + /* Function to free the attr_groups which are dynamically allocated */ static void imc_common_mem_free(struct imc_pmu *pmu_ptr) { @@ -1204,6 +1487,11 @@ static void imc_common_cpuhp_mem_free(struct imc_pmu *pmu_ptr) cpuhp_remove_state(CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE); cleanup_all_thread_imc_memory(); } + + if (pmu_ptr->domain == IMC_DOMAIN_TRACE) { + cpuhp_remove_state(CPUHP_AP_PERF_POWERPC_TRACE_IMC_ONLINE); + cleanup_all_trace_imc_memory(); + } } /* @@ -1286,6 +1574,27 @@ static int imc_mem_init(struct imc_pmu *pmu_ptr, struct device_node *parent, thread_imc_pmu = pmu_ptr; break; + case IMC_DOMAIN_TRACE: + /* Update the pmu name */ + pmu_ptr->pmu.name = kasprintf(GFP_KERNEL, "%s%s", s, "_imc"); + if (!pmu_ptr->pmu.name) + return -ENOMEM; + + nr_cores = DIV_ROUND_UP(num_possible_cpus(), threads_per_core); + trace_imc_refc = kcalloc(nr_cores, sizeof(struct imc_pmu_ref), + GFP_KERNEL); + if (!trace_imc_refc) + return -ENOMEM; + + trace_imc_mem_size = pmu_ptr->counter_mem_size; + for_each_online_cpu(cpu) { + res = trace_imc_mem_alloc(cpu, trace_imc_mem_size); + if (res) { + cleanup_all_trace_imc_memory(); + goto err; + } + } + break; default: return -EINVAL; } @@ -1359,6 +1668,14 @@ int init_imc_pmu(struct device_node *parent, struct imc_pmu *pmu_ptr, int pmu_id } break; + case IMC_DOMAIN_TRACE: + ret = trace_imc_cpu_init(); + if (ret) { + cleanup_all_trace_imc_memory(); + goto err_free_mem; + } + + break; default: return -EINVAL; /* Unknown domain */ } diff --git a/arch/powerpc/perf/internal.h b/arch/powerpc/perf/internal.h new file mode 100644 index 000000000000..f755c64da137 --- /dev/null +++ b/arch/powerpc/perf/internal.h @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Copyright 2019 Madhavan Srinivasan, IBM Corporation. + +extern int init_ppc970_pmu(void); +extern int init_power5_pmu(void); +extern int init_power5p_pmu(void); +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_generic_compat_pmu(void); diff --git a/arch/powerpc/perf/isa207-common.c b/arch/powerpc/perf/isa207-common.c index a6c24d866b2f..4c86da5eb28a 100644 --- a/arch/powerpc/perf/isa207-common.c +++ b/arch/powerpc/perf/isa207-common.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Common Performance counter support functions for PowerISA v2.07 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 (at your option) any later version. */ #include "isa207-common.h" diff --git a/arch/powerpc/perf/isa207-common.h b/arch/powerpc/perf/isa207-common.h index 91350f42a662..63fd4f3f6013 100644 --- a/arch/powerpc/perf/isa207-common.h +++ b/arch/powerpc/perf/isa207-common.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * 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 any later version. */ #ifndef _LINUX_POWERPC_PERF_ISA207_COMMON_H_ diff --git a/arch/powerpc/perf/mpc7450-pmu.c b/arch/powerpc/perf/mpc7450-pmu.c index d115c5635bf3..4d5ef92511d1 100644 --- a/arch/powerpc/perf/mpc7450-pmu.c +++ b/arch/powerpc/perf/mpc7450-pmu.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for MPC7450-family processors. * * Copyright 2008-2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/string.h> #include <linux/perf_event.h> diff --git a/arch/powerpc/perf/perf_regs.c b/arch/powerpc/perf/perf_regs.c index 3349f3f8fe84..a213a0aa5d25 100644 --- a/arch/powerpc/perf/perf_regs.c +++ b/arch/powerpc/perf/perf_regs.c @@ -1,10 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2016 Anju T, 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 (at your option) any later version. */ #include <linux/errno.h> diff --git a/arch/powerpc/perf/power5+-pmu.c b/arch/powerpc/perf/power5+-pmu.c index 0526dac66007..f8574547fc6b 100644 --- a/arch/powerpc/perf/power5+-pmu.c +++ b/arch/powerpc/perf/power5+-pmu.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for POWER5+/++ (not POWER5) processors. * * Copyright 2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/kernel.h> #include <linux/perf_event.h> @@ -677,7 +673,7 @@ static struct power_pmu power5p_pmu = { .cache_events = &power5p_cache_events, }; -static int __init init_power5p_pmu(void) +int init_power5p_pmu(void) { if (!cur_cpu_spec->oprofile_cpu_type || (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5+") @@ -686,5 +682,3 @@ static int __init init_power5p_pmu(void) return register_power_pmu(&power5p_pmu); } - -early_initcall(init_power5p_pmu); diff --git a/arch/powerpc/perf/power5-pmu.c b/arch/powerpc/perf/power5-pmu.c index 4dc99f9f7962..da52ecab7c9a 100644 --- a/arch/powerpc/perf/power5-pmu.c +++ b/arch/powerpc/perf/power5-pmu.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for POWER5 (not POWER5++) processors. * * Copyright 2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/kernel.h> #include <linux/perf_event.h> @@ -618,7 +614,7 @@ static struct power_pmu power5_pmu = { .flags = PPMU_HAS_SSLOT, }; -static int __init init_power5_pmu(void) +int init_power5_pmu(void) { if (!cur_cpu_spec->oprofile_cpu_type || strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5")) @@ -626,5 +622,3 @@ static int __init init_power5_pmu(void) return register_power_pmu(&power5_pmu); } - -early_initcall(init_power5_pmu); diff --git a/arch/powerpc/perf/power6-pmu.c b/arch/powerpc/perf/power6-pmu.c index 9c9d646b68a1..3929cacf72ed 100644 --- a/arch/powerpc/perf/power6-pmu.c +++ b/arch/powerpc/perf/power6-pmu.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for POWER6 processors. * * Copyright 2008-2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/kernel.h> #include <linux/perf_event.h> @@ -540,7 +536,7 @@ static struct power_pmu power6_pmu = { .cache_events = &power6_cache_events, }; -static int __init init_power6_pmu(void) +int init_power6_pmu(void) { if (!cur_cpu_spec->oprofile_cpu_type || strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power6")) @@ -548,5 +544,3 @@ static int __init init_power6_pmu(void) return register_power_pmu(&power6_pmu); } - -early_initcall(init_power6_pmu); diff --git a/arch/powerpc/perf/power7-events-list.h b/arch/powerpc/perf/power7-events-list.h index 64f13d9260a6..6c2b7066490b 100644 --- a/arch/powerpc/perf/power7-events-list.h +++ b/arch/powerpc/perf/power7-events-list.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Performance counter support for POWER7 processors. * * Copyright 2013 Runzhen Wang, 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 (at your option) any later version. */ EVENT(PM_IC_DEMAND_L2_BR_ALL, 0x04898) diff --git a/arch/powerpc/perf/power7-pmu.c b/arch/powerpc/perf/power7-pmu.c index 6dbae9884ec4..a137813a3076 100644 --- a/arch/powerpc/perf/power7-pmu.c +++ b/arch/powerpc/perf/power7-pmu.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for POWER7 processors. * * Copyright 2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/kernel.h> #include <linux/perf_event.h> @@ -445,7 +441,7 @@ static struct power_pmu power7_pmu = { .cache_events = &power7_cache_events, }; -static int __init init_power7_pmu(void) +int init_power7_pmu(void) { if (!cur_cpu_spec->oprofile_cpu_type || strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power7")) @@ -456,5 +452,3 @@ static int __init init_power7_pmu(void) return register_power_pmu(&power7_pmu); } - -early_initcall(init_power7_pmu); diff --git a/arch/powerpc/perf/power8-events-list.h b/arch/powerpc/perf/power8-events-list.h index 0f1d184627cc..2e9b75d9955f 100644 --- a/arch/powerpc/perf/power8-events-list.h +++ b/arch/powerpc/perf/power8-events-list.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Performance counter support for POWER8 processors. * * Copyright 2014 Sukadev Bhattiprolu, 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 (at your option) any later version. */ /* diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c index d12a2db26353..b47e9fb5e899 100644 --- a/arch/powerpc/perf/power8-pmu.c +++ b/arch/powerpc/perf/power8-pmu.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for POWER8 processors. * * Copyright 2009 Paul Mackerras, IBM Corporation. * Copyright 2013 Michael Ellerman, 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 (at your option) any later version. */ #define pr_fmt(fmt) "power8-pmu: " fmt @@ -379,7 +375,7 @@ static struct power_pmu power8_pmu = { .bhrb_nr = 32, }; -static int __init init_power8_pmu(void) +int init_power8_pmu(void) { int rc; @@ -399,4 +395,3 @@ static int __init init_power8_pmu(void) return 0; } -early_initcall(init_power8_pmu); diff --git a/arch/powerpc/perf/power9-events-list.h b/arch/powerpc/perf/power9-events-list.h index 063c9d9f2516..7f4e6b5f22aa 100644 --- a/arch/powerpc/perf/power9-events-list.h +++ b/arch/powerpc/perf/power9-events-list.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Performance counter support for POWER9 processors. * * 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 (at your option) any later version. */ /* @@ -63,8 +59,6 @@ EVENT(PM_RUN_CYC_ALT, 0x200f4) /* Instruction Dispatched */ EVENT(PM_INST_DISP, 0x200f2) EVENT(PM_INST_DISP_ALT, 0x300f2) -/* Alternate Branch event code */ -EVENT(PM_BR_CMPL_ALT, 0x10012) /* Branch event that are not strongly biased */ EVENT(PM_BR_2PATH, 0x20036) /* ALternate branch event that are not strongly biased */ diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c index 030544e35959..738ed26c538d 100644 --- a/arch/powerpc/perf/power9-pmu.c +++ b/arch/powerpc/perf/power9-pmu.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * 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 @@ -437,7 +433,7 @@ static struct power_pmu power9_pmu = { .bhrb_nr = 32, }; -static int __init init_power9_pmu(void) +int init_power9_pmu(void) { int rc = 0; unsigned int pvr = mfspr(SPRN_PVR); @@ -467,4 +463,3 @@ static int __init init_power9_pmu(void) return 0; } -early_initcall(init_power9_pmu); diff --git a/arch/powerpc/perf/ppc970-pmu.c b/arch/powerpc/perf/ppc970-pmu.c index 8b6a8a36fa38..4035d93d87ab 100644 --- a/arch/powerpc/perf/ppc970-pmu.c +++ b/arch/powerpc/perf/ppc970-pmu.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Performance counter support for PPC970-family processors. * * Copyright 2008-2009 Paul Mackerras, 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 (at your option) any later version. */ #include <linux/string.h> #include <linux/perf_event.h> @@ -490,7 +486,7 @@ static struct power_pmu ppc970_pmu = { .flags = PPMU_NO_SIPR | PPMU_NO_CONT_SAMPLING, }; -static int __init init_ppc970_pmu(void) +int init_ppc970_pmu(void) { if (!cur_cpu_spec->oprofile_cpu_type || (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/970") @@ -499,5 +495,3 @@ static int __init init_ppc970_pmu(void) return register_power_pmu(&ppc970_pmu); } - -early_initcall(init_ppc970_pmu); |