diff options
author | Ingo Molnar <mingo@kernel.org> | 2015-08-25 09:59:19 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2015-08-25 09:59:19 +0200 |
commit | 8d58b66ed2b000f27658c88a4ed70e8042e86a58 (patch) | |
tree | 5bae2c74f932b5d863f72cb698a6f71260340b26 /arch/arm/kernel/perf_event_v7.c | |
parent | 13fe86f465b72fc9328d4f5ebc33223c011852ae (diff) | |
parent | c13dcf9f2d6f5f06ef1bf79ec456df614c5e058b (diff) |
Merge tag 'v4.2-rc8' into x86/mm, before applying new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/kernel/perf_event_v7.c')
-rw-r--r-- | arch/arm/kernel/perf_event_v7.c | 129 |
1 files changed, 62 insertions, 67 deletions
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c index f4207a4dcb01..f9b37f876e20 100644 --- a/arch/arm/kernel/perf_event_v7.c +++ b/arch/arm/kernel/perf_event_v7.c @@ -19,9 +19,15 @@ #ifdef CONFIG_CPU_V7 #include <asm/cp15.h> +#include <asm/cputype.h> +#include <asm/irq_regs.h> +#include <asm/pmu.h> #include <asm/vfp.h> #include "../vfp/vfpinstr.h" +#include <linux/of.h> +#include <linux/platform_device.h> + /* * Common ARMv7 event types * @@ -1056,15 +1062,22 @@ static void armv7pmu_init(struct arm_pmu *cpu_pmu) cpu_pmu->max_period = (1LLU << 32) - 1; }; -static u32 armv7_read_num_pmnc_events(void) +static void armv7_read_num_pmnc_events(void *info) { - u32 nb_cnt; + int *nb_cnt = info; /* Read the nb of CNTx counters supported from PMNC */ - nb_cnt = (armv7_pmnc_read() >> ARMV7_PMNC_N_SHIFT) & ARMV7_PMNC_N_MASK; + *nb_cnt = (armv7_pmnc_read() >> ARMV7_PMNC_N_SHIFT) & ARMV7_PMNC_N_MASK; - /* Add the CPU cycles counter and return */ - return nb_cnt + 1; + /* Add the CPU cycles counter */ + *nb_cnt += 1; +} + +static int armv7_probe_num_events(struct arm_pmu *arm_pmu) +{ + return smp_call_function_any(&arm_pmu->supported_cpus, + armv7_read_num_pmnc_events, + &arm_pmu->num_events, 1); } static int armv7_a8_pmu_init(struct arm_pmu *cpu_pmu) @@ -1072,8 +1085,7 @@ static int armv7_a8_pmu_init(struct arm_pmu *cpu_pmu) armv7pmu_init(cpu_pmu); cpu_pmu->name = "armv7_cortex_a8"; cpu_pmu->map_event = armv7_a8_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); - return 0; + return armv7_probe_num_events(cpu_pmu); } static int armv7_a9_pmu_init(struct arm_pmu *cpu_pmu) @@ -1081,8 +1093,7 @@ static int armv7_a9_pmu_init(struct arm_pmu *cpu_pmu) armv7pmu_init(cpu_pmu); cpu_pmu->name = "armv7_cortex_a9"; cpu_pmu->map_event = armv7_a9_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); - return 0; + return armv7_probe_num_events(cpu_pmu); } static int armv7_a5_pmu_init(struct arm_pmu *cpu_pmu) @@ -1090,8 +1101,7 @@ static int armv7_a5_pmu_init(struct arm_pmu *cpu_pmu) armv7pmu_init(cpu_pmu); cpu_pmu->name = "armv7_cortex_a5"; cpu_pmu->map_event = armv7_a5_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); - return 0; + return armv7_probe_num_events(cpu_pmu); } static int armv7_a15_pmu_init(struct arm_pmu *cpu_pmu) @@ -1099,9 +1109,8 @@ static int armv7_a15_pmu_init(struct arm_pmu *cpu_pmu) armv7pmu_init(cpu_pmu); cpu_pmu->name = "armv7_cortex_a15"; cpu_pmu->map_event = armv7_a15_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); cpu_pmu->set_event_filter = armv7pmu_set_event_filter; - return 0; + return armv7_probe_num_events(cpu_pmu); } static int armv7_a7_pmu_init(struct arm_pmu *cpu_pmu) @@ -1109,9 +1118,8 @@ static int armv7_a7_pmu_init(struct arm_pmu *cpu_pmu) armv7pmu_init(cpu_pmu); cpu_pmu->name = "armv7_cortex_a7"; cpu_pmu->map_event = armv7_a7_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); cpu_pmu->set_event_filter = armv7pmu_set_event_filter; - return 0; + return armv7_probe_num_events(cpu_pmu); } static int armv7_a12_pmu_init(struct arm_pmu *cpu_pmu) @@ -1119,16 +1127,15 @@ static int armv7_a12_pmu_init(struct arm_pmu *cpu_pmu) armv7pmu_init(cpu_pmu); cpu_pmu->name = "armv7_cortex_a12"; cpu_pmu->map_event = armv7_a12_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); cpu_pmu->set_event_filter = armv7pmu_set_event_filter; - return 0; + return armv7_probe_num_events(cpu_pmu); } static int armv7_a17_pmu_init(struct arm_pmu *cpu_pmu) { - armv7_a12_pmu_init(cpu_pmu); + int ret = armv7_a12_pmu_init(cpu_pmu); cpu_pmu->name = "armv7_cortex_a17"; - return 0; + return ret; } /* @@ -1508,14 +1515,13 @@ static int krait_pmu_init(struct arm_pmu *cpu_pmu) cpu_pmu->map_event = krait_map_event_no_branch; else cpu_pmu->map_event = krait_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); cpu_pmu->set_event_filter = armv7pmu_set_event_filter; cpu_pmu->reset = krait_pmu_reset; cpu_pmu->enable = krait_pmu_enable_event; cpu_pmu->disable = krait_pmu_disable_event; cpu_pmu->get_event_idx = krait_pmu_get_event_idx; cpu_pmu->clear_event_idx = krait_pmu_clear_event_idx; - return 0; + return armv7_probe_num_events(cpu_pmu); } /* @@ -1833,13 +1839,12 @@ static int scorpion_pmu_init(struct arm_pmu *cpu_pmu) armv7pmu_init(cpu_pmu); cpu_pmu->name = "armv7_scorpion"; cpu_pmu->map_event = scorpion_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); cpu_pmu->reset = scorpion_pmu_reset; cpu_pmu->enable = scorpion_pmu_enable_event; cpu_pmu->disable = scorpion_pmu_disable_event; cpu_pmu->get_event_idx = scorpion_pmu_get_event_idx; cpu_pmu->clear_event_idx = scorpion_pmu_clear_event_idx; - return 0; + return armv7_probe_num_events(cpu_pmu); } static int scorpion_mp_pmu_init(struct arm_pmu *cpu_pmu) @@ -1847,62 +1852,52 @@ static int scorpion_mp_pmu_init(struct arm_pmu *cpu_pmu) armv7pmu_init(cpu_pmu); cpu_pmu->name = "armv7_scorpion_mp"; cpu_pmu->map_event = scorpion_map_event; - cpu_pmu->num_events = armv7_read_num_pmnc_events(); cpu_pmu->reset = scorpion_pmu_reset; cpu_pmu->enable = scorpion_pmu_enable_event; cpu_pmu->disable = scorpion_pmu_disable_event; cpu_pmu->get_event_idx = scorpion_pmu_get_event_idx; cpu_pmu->clear_event_idx = scorpion_pmu_clear_event_idx; - return 0; -} -#else -static inline int armv7_a8_pmu_init(struct arm_pmu *cpu_pmu) -{ - return -ENODEV; -} - -static inline int armv7_a9_pmu_init(struct arm_pmu *cpu_pmu) -{ - return -ENODEV; -} - -static inline int armv7_a5_pmu_init(struct arm_pmu *cpu_pmu) -{ - return -ENODEV; -} - -static inline int armv7_a15_pmu_init(struct arm_pmu *cpu_pmu) -{ - return -ENODEV; -} - -static inline int armv7_a7_pmu_init(struct arm_pmu *cpu_pmu) -{ - return -ENODEV; -} + return armv7_probe_num_events(cpu_pmu); +} + +static const struct of_device_id armv7_pmu_of_device_ids[] = { + {.compatible = "arm,cortex-a17-pmu", .data = armv7_a17_pmu_init}, + {.compatible = "arm,cortex-a15-pmu", .data = armv7_a15_pmu_init}, + {.compatible = "arm,cortex-a12-pmu", .data = armv7_a12_pmu_init}, + {.compatible = "arm,cortex-a9-pmu", .data = armv7_a9_pmu_init}, + {.compatible = "arm,cortex-a8-pmu", .data = armv7_a8_pmu_init}, + {.compatible = "arm,cortex-a7-pmu", .data = armv7_a7_pmu_init}, + {.compatible = "arm,cortex-a5-pmu", .data = armv7_a5_pmu_init}, + {.compatible = "qcom,krait-pmu", .data = krait_pmu_init}, + {.compatible = "qcom,scorpion-pmu", .data = scorpion_pmu_init}, + {.compatible = "qcom,scorpion-mp-pmu", .data = scorpion_mp_pmu_init}, + {}, +}; -static inline int armv7_a12_pmu_init(struct arm_pmu *cpu_pmu) -{ - return -ENODEV; -} +static const struct pmu_probe_info armv7_pmu_probe_table[] = { + ARM_PMU_PROBE(ARM_CPU_PART_CORTEX_A8, armv7_a8_pmu_init), + ARM_PMU_PROBE(ARM_CPU_PART_CORTEX_A9, armv7_a9_pmu_init), + { /* sentinel value */ } +}; -static inline int armv7_a17_pmu_init(struct arm_pmu *cpu_pmu) -{ - return -ENODEV; -} -static inline int krait_pmu_init(struct arm_pmu *cpu_pmu) +static int armv7_pmu_device_probe(struct platform_device *pdev) { - return -ENODEV; + return arm_pmu_device_probe(pdev, armv7_pmu_of_device_ids, + armv7_pmu_probe_table); } -static inline int scorpion_pmu_init(struct arm_pmu *cpu_pmu) -{ - return -ENODEV; -} +static struct platform_driver armv7_pmu_driver = { + .driver = { + .name = "armv7-pmu", + .of_match_table = armv7_pmu_of_device_ids, + }, + .probe = armv7_pmu_device_probe, +}; -static inline int scorpion_mp_pmu_init(struct arm_pmu *cpu_pmu) +static int __init register_armv7_pmu_driver(void) { - return -ENODEV; + return platform_driver_register(&armv7_pmu_driver); } +device_initcall(register_armv7_pmu_driver); #endif /* CONFIG_CPU_V7 */ |