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/linux-6.12.1/arch/arm/common/
Dmcpm_entry.c3 * arch/arm/common/mcpm_entry.c -- entry point for multi-cluster PM
24 * see Documentation/arch/arm/cluster-pm-race-avoidance.rst.
34 static void __mcpm_cpu_going_down(unsigned int cpu, unsigned int cluster) in __mcpm_cpu_going_down() argument
36 mcpm_sync.clusters[cluster].cpus[cpu].cpu = CPU_GOING_DOWN; in __mcpm_cpu_going_down()
37 sync_cache_w(&mcpm_sync.clusters[cluster].cpus[cpu].cpu); in __mcpm_cpu_going_down()
42 * cluster can be torn down without disrupting this CPU.
47 static void __mcpm_cpu_down(unsigned int cpu, unsigned int cluster) in __mcpm_cpu_down() argument
50 mcpm_sync.clusters[cluster].cpus[cpu].cpu = CPU_DOWN; in __mcpm_cpu_down()
51 sync_cache_w(&mcpm_sync.clusters[cluster].cpus[cpu].cpu); in __mcpm_cpu_down()
56 * __mcpm_outbound_leave_critical: Leave the cluster teardown critical section.
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Dmcpm_head.S3 * arch/arm/common/mcpm_head.S -- kernel entry point for multi-cluster PM
8 * Refer to Documentation/arch/arm/cluster-pm-race-avoidance.rst
28 1903: .asciz " cluster"
56 ubfx r10, r0, #8, #8 @ r10 = cluster
88 mla r8, r0, r10, r8 @ r8 = sync cluster base
96 @ At this point, the cluster cannot unexpectedly enter the GOING_DOWN
100 mla r11, r0, r10, r11 @ r11 = cluster first man lock
106 bne mcpm_setup_wait @ wait for cluster setup if so
109 cmp r0, #CLUSTER_UP @ cluster already up?
110 bne mcpm_setup @ if not, set up the cluster
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DbL_switcher.c3 * arch/arm/common/bL_switcher.c -- big.LITTLE cluster switcher core driver
118 * with the cluster number.
141 * bL_switch_to - Switch to a specific cluster for the current CPU
142 * @new_cluster_id: the ID of the cluster to switch to.
273 int cluster; in bL_switcher_thread() local
288 cluster = t->wanted_cluster; in bL_switcher_thread()
295 if (cluster != -1) { in bL_switcher_thread()
296 bL_switch_to(cluster); in bL_switcher_thread()
321 * bL_switch_request_cb - Switch to a specific cluster for the given CPU,
325 * @new_cluster_id: the ID of the cluster to switch to.
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/linux-6.12.1/arch/arm/mach-sunxi/
Dmc_smp.c11 * Cluster cache enable trampoline code adapted from MCPM framework
87 static bool sunxi_core_is_cortex_a15(unsigned int core, unsigned int cluster) in sunxi_core_is_cortex_a15() argument
90 int cpu = cluster * SUNXI_CPUS_PER_CLUSTER + core; in sunxi_core_is_cortex_a15()
102 * would be mid way in a core or cluster power sequence. in sunxi_core_is_cortex_a15()
104 pr_err("%s: Couldn't get CPU cluster %u core %u device node\n", in sunxi_core_is_cortex_a15()
105 __func__, cluster, core); in sunxi_core_is_cortex_a15()
115 static int sunxi_cpu_power_switch_set(unsigned int cpu, unsigned int cluster, in sunxi_cpu_power_switch_set() argument
121 reg = readl(prcm_base + PRCM_PWR_SWITCH_REG(cluster, cpu)); in sunxi_cpu_power_switch_set()
124 pr_debug("power clamp for cluster %u cpu %u already open\n", in sunxi_cpu_power_switch_set()
125 cluster, cpu); in sunxi_cpu_power_switch_set()
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/linux-6.12.1/arch/arm/mach-versatile/
Dtc2_pm.c46 static int tc2_pm_cpu_powerup(unsigned int cpu, unsigned int cluster) in tc2_pm_cpu_powerup() argument
48 pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster); in tc2_pm_cpu_powerup()
49 if (cluster >= TC2_CLUSTERS || cpu >= tc2_nr_cpus[cluster]) in tc2_pm_cpu_powerup()
51 ve_spc_set_resume_addr(cluster, cpu, in tc2_pm_cpu_powerup()
53 ve_spc_cpu_wakeup_irq(cluster, cpu, true); in tc2_pm_cpu_powerup()
57 static int tc2_pm_cluster_powerup(unsigned int cluster) in tc2_pm_cluster_powerup() argument
59 pr_debug("%s: cluster %u\n", __func__, cluster); in tc2_pm_cluster_powerup()
60 if (cluster >= TC2_CLUSTERS) in tc2_pm_cluster_powerup()
62 ve_spc_powerdown(cluster, false); in tc2_pm_cluster_powerup()
66 static void tc2_pm_cpu_powerdown_prepare(unsigned int cpu, unsigned int cluster) in tc2_pm_cpu_powerdown_prepare() argument
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Dspc.c50 /* SPC CPU/cluster reset statue */
71 /* TC2 static dual-cluster configuration */
97 * A15s cluster identifier
111 static inline bool cluster_is_a15(u32 cluster) in cluster_is_a15() argument
113 return cluster == info->a15_clusid; in cluster_is_a15()
142 * @cluster: mpidr[15:8] bitfield describing cluster affinity level
150 void ve_spc_cpu_wakeup_irq(u32 cluster, u32 cpu, bool set) in ve_spc_cpu_wakeup_irq() argument
154 if (cluster >= MAX_CLUSTERS) in ve_spc_cpu_wakeup_irq()
159 if (!cluster_is_a15(cluster)) in ve_spc_cpu_wakeup_irq()
175 * @cluster: mpidr[15:8] bitfield describing cluster affinity level
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/linux-6.12.1/Documentation/arch/arm/
Dcluster-pm-race-avoidance.rst2 Cluster-wide Power-up/power-down race avoidance algorithm
6 cluster setup and teardown operations and to manage hardware coherency
29 cluster-level operations are only performed when it is truly safe to do
34 are not immediately enabled when a cluster powers up. Since enabling or
38 power-down and power-up at the cluster level.
48 Each cluster and CPU is assigned a state, as follows:
67 The CPU or cluster is not coherent, and is either powered off or
71 The CPU or cluster has committed to moving to the UP state.
76 The CPU or cluster is active and coherent at the hardware
81 The CPU or cluster has committed to moving to the DOWN
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/linux-6.12.1/fs/ocfs2/cluster/
Dnodemanager.c18 * cluster active at a time. Changing this will require trickling
19 * cluster references throughout where nodes are looked up */
49 struct o2nm_cluster *cluster = o2nm_single_cluster; in o2nm_configured_node_map() local
51 BUG_ON(bytes < (sizeof(cluster->cl_nodes_bitmap))); in o2nm_configured_node_map()
53 if (cluster == NULL) in o2nm_configured_node_map()
56 read_lock(&cluster->cl_nodes_lock); in o2nm_configured_node_map()
57 bitmap_copy(map, cluster->cl_nodes_bitmap, O2NM_MAX_NODES); in o2nm_configured_node_map()
58 read_unlock(&cluster->cl_nodes_lock); in o2nm_configured_node_map()
64 static struct o2nm_node *o2nm_node_ip_tree_lookup(struct o2nm_cluster *cluster, in o2nm_node_ip_tree_lookup() argument
69 struct rb_node **p = &cluster->cl_node_ip_tree.rb_node; in o2nm_node_ip_tree_lookup()
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/linux-6.12.1/drivers/perf/
Dqcom_l2_pmu.c121 * The cache is made up of one or more clusters, each cluster has its own PMU.
122 * Each cluster is associated with one or more CPUs.
143 /* The CPU that is used for collecting events on this cluster */
145 /* All the CPUs associated with this cluster */
243 static void cluster_pmu_set_resr(struct cluster_pmu *cluster, in cluster_pmu_set_resr() argument
254 spin_lock_irqsave(&cluster->pmu_lock, flags); in cluster_pmu_set_resr()
262 spin_unlock_irqrestore(&cluster->pmu_lock, flags); in cluster_pmu_set_resr()
268 * all CPUS, subunits and ID independent events in this cluster.
319 static void l2_cache_cluster_set_period(struct cluster_pmu *cluster, in l2_cache_cluster_set_period() argument
339 static int l2_cache_get_event_idx(struct cluster_pmu *cluster, in l2_cache_get_event_idx() argument
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/linux-6.12.1/arch/arm/mach-exynos/
Dmcpm-exynos.c57 static int exynos_cpu_powerup(unsigned int cpu, unsigned int cluster) in exynos_cpu_powerup() argument
59 unsigned int cpunr = cpu + (cluster * EXYNOS5420_CPUS_PER_CLUSTER); in exynos_cpu_powerup()
62 pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster); in exynos_cpu_powerup()
64 cluster >= EXYNOS5420_NR_CLUSTERS) in exynos_cpu_powerup()
71 * This assumes the cluster number of the big cores(Cortex A15) in exynos_cpu_powerup()
76 if (cluster && in exynos_cpu_powerup()
77 cluster == MPIDR_AFFINITY_LEVEL(cpu_logical_map(0), 1)) { in exynos_cpu_powerup()
92 pr_err("cpu %u cluster %u powerup failed\n", in exynos_cpu_powerup()
93 cpu, cluster); in exynos_cpu_powerup()
106 static int exynos_cluster_powerup(unsigned int cluster) in exynos_cluster_powerup() argument
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/linux-6.12.1/arch/arm/include/asm/
Dmcpm.h13 * Maximum number of possible clusters / CPUs per cluster.
39 * This is used to indicate where the given CPU from given cluster should
44 void mcpm_set_entry_vector(unsigned cpu, unsigned cluster, void *ptr);
51 void mcpm_set_early_poke(unsigned cpu, unsigned cluster,
55 * CPU/cluster power operations API for higher subsystems to use.
66 * mcpm_cpu_power_up - make given CPU in given cluster runable
68 * @cpu: CPU number within given cluster
69 * @cluster: cluster number for the CPU
71 * The identified CPU is brought out of reset. If the cluster was powered
73 * in the cluster run, and ensuring appropriate cluster setup.
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/linux-6.12.1/arch/mips/include/asm/
Dmips-cps.h124 * mips_cps_cluster_config - return (GCR|CPC)_CONFIG from a cluster
125 * @cluster: the ID of the cluster whose config we want
127 * Read the value of GCR_CONFIG (or its CPC_CONFIG mirror) from a @cluster.
131 static inline uint64_t mips_cps_cluster_config(unsigned int cluster) in mips_cps_cluster_config() argument
139 * within this cluster. in mips_cps_cluster_config()
141 WARN_ON(cluster != 0); in mips_cps_cluster_config()
149 mips_cm_lock_other(cluster, 0, 0, CM_GCR_Cx_OTHER_BLOCK_GLOBAL); in mips_cps_cluster_config()
158 * mips_cps_numcores - return the number of cores present in a cluster
159 * @cluster: the ID of the cluster whose core count we want
164 static inline unsigned int mips_cps_numcores(unsigned int cluster) in mips_cps_numcores() argument
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/linux-6.12.1/arch/arm/mach-hisi/
Dplatmcpm.c71 static bool hip04_cluster_is_down(unsigned int cluster) in hip04_cluster_is_down() argument
76 if (hip04_cpu_table[cluster][i]) in hip04_cluster_is_down()
81 static void hip04_set_snoop_filter(unsigned int cluster, unsigned int on) in hip04_set_snoop_filter() argument
89 data |= 1 << cluster; in hip04_set_snoop_filter()
91 data &= ~(1 << cluster); in hip04_set_snoop_filter()
100 unsigned int mpidr, cpu, cluster; in hip04_boot_secondary() local
106 cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); in hip04_boot_secondary()
110 if (cluster >= HIP04_MAX_CLUSTERS || cpu >= HIP04_MAX_CPUS_PER_CLUSTER) in hip04_boot_secondary()
115 if (hip04_cpu_table[cluster][cpu]) in hip04_boot_secondary()
118 sys_dreq = sysctrl + SC_CPU_RESET_DREQ(cluster); in hip04_boot_secondary()
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/linux-6.12.1/drivers/remoteproc/
Dmtk_scp.c70 struct mtk_scp_of_cluster *scp_cluster = scp->cluster; in scp_wdt_handler()
175 val = readl(scp->cluster->reg_base + MT8183_SW_RSTN); in mt8183_scp_reset_assert()
177 writel(val, scp->cluster->reg_base + MT8183_SW_RSTN); in mt8183_scp_reset_assert()
184 val = readl(scp->cluster->reg_base + MT8183_SW_RSTN); in mt8183_scp_reset_deassert()
186 writel(val, scp->cluster->reg_base + MT8183_SW_RSTN); in mt8183_scp_reset_deassert()
191 writel(1, scp->cluster->reg_base + MT8192_CORE0_SW_RSTN_SET); in mt8192_scp_reset_assert()
196 writel(1, scp->cluster->reg_base + MT8192_CORE0_SW_RSTN_CLR); in mt8192_scp_reset_deassert()
201 writel(1, scp->cluster->reg_base + MT8195_CORE1_SW_RSTN_SET); in mt8195_scp_c1_reset_assert()
206 writel(1, scp->cluster->reg_base + MT8195_CORE1_SW_RSTN_CLR); in mt8195_scp_c1_reset_deassert()
213 scp_to_host = readl(scp->cluster->reg_base + MT8183_SCP_TO_HOST); in mt8183_scp_irq_handler()
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Dti_k3_r5_remoteproc.c73 * All cluster mode values are not applicable on all SoCs. The following
102 * struct k3_r5_cluster - K3 R5F Cluster structure
104 * @mode: Mode to configure the Cluster - Split or LockStep
105 * @cores: list of R5 cores within the cluster
156 * @cluster: cached pointer to parent cluster structure
166 struct k3_r5_cluster *cluster; member
294 static int k3_r5_lockstep_reset(struct k3_r5_cluster *cluster) in k3_r5_lockstep_reset() argument
300 list_for_each_entry(core, &cluster->cores, elem) { in k3_r5_lockstep_reset()
311 list_for_each_entry(core, &cluster->cores, elem) { in k3_r5_lockstep_reset()
324 list_for_each_entry_continue_reverse(core, &cluster->cores, elem) { in k3_r5_lockstep_reset()
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/linux-6.12.1/Documentation/ABI/testing/
Dsysfs-ocfs214 covers how ocfs2 uses distributed locking between cluster
18 cluster nodes can interoperate if they have an identical
34 the available plugins to support ocfs2 cluster operation.
35 A cluster plugin is required to use ocfs2 in a cluster.
38 * 'o2cb' - The classic o2cb cluster stack that ocfs2 has
40 * 'user' - A plugin supporting userspace cluster software
54 cluster plugin is currently in use by the filesystem.
62 the cluster stack in use. The contents may change
63 when all filesystems are unmounted and the cluster stack
71 of current ocfs2 cluster stack. This value is set by
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/linux-6.12.1/drivers/cpufreq/
Dvexpress-spc-cpufreq.c45 #define ACTUAL_FREQ(cluster, freq) ((cluster == A7_CLUSTER) ? freq << 1 : freq) argument
46 #define VIRT_FREQ(cluster, freq) ((cluster == A7_CLUSTER) ? freq >> 1 : freq) argument
71 static unsigned int find_cluster_maxfreq(int cluster) in find_cluster_maxfreq() argument
79 if (cluster == per_cpu(physical_cluster, j) && in find_cluster_maxfreq()
154 /* Recalc freq for old cluster when switching clusters */ in ve_spc_cpufreq_set_rate()
156 /* Switch cluster */ in ve_spc_cpufreq_set_rate()
161 /* Set freq of old cluster if there are cpus left on it */ in ve_spc_cpufreq_set_rate()
167 pr_err("%s: clk_set_rate failed: %d, old cluster: %d\n", in ve_spc_cpufreq_set_rate()
282 u32 cluster = raw_cpu_to_cluster(cpu_dev->id); in _put_cluster_clk_and_freq_table() local
284 if (!freq_table[cluster]) in _put_cluster_clk_and_freq_table()
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Dtegra186-cpufreq.c28 /* CPU0 - A57 Cluster */
33 /* CPU1 - Denver Cluster */
38 /* CPU2 - Denver Cluster */
43 /* CPU3 - A57 Cluster */
48 /* CPU4 - A57 Cluster */
53 /* CPU5 - A57 Cluster */
75 unsigned int cluster = data->cpus[policy->cpu].bpmp_cluster_id; in tegra186_cpufreq_init() local
77 policy->freq_table = data->clusters[cluster].table; in tegra186_cpufreq_init()
100 struct tegra186_cpufreq_cluster *cluster; in tegra186_cpufreq_get() local
112 cluster = &data->clusters[cluster_id]; in tegra186_cpufreq_get()
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/linux-6.12.1/arch/x86/kernel/apic/
Dx2apic_cluster.c56 /* Collapse cpus in a cluster so a single IPI per cluster is sent */ in __x2apic_send_IPI_mask()
68 /* Remove cluster CPUs from tmpmask */ in __x2apic_send_IPI_mask()
105 static void prefill_clustermask(struct cpumask *cmsk, unsigned int cpu, u32 cluster) in prefill_clustermask() argument
113 if (apicid == BAD_APICID || cpu_i == cpu || apic_cluster(apicid) != cluster) in prefill_clustermask()
124 static int alloc_clustermask(unsigned int cpu, u32 cluster, int node) in alloc_clustermask() argument
130 * At boot time, the CPU present mask is stable. The cluster mask is in alloc_clustermask()
131 * allocated for the first CPU in the cluster and propagated to all in alloc_clustermask()
132 * present siblings in the cluster. If the cluster mask is already set in alloc_clustermask()
144 * any more) to find any existing cluster mask. in alloc_clustermask()
149 if (apicid != BAD_APICID && apic_cluster(apicid) == cluster) { in alloc_clustermask()
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/linux-6.12.1/Documentation/devicetree/bindings/cpufreq/
Dapple,cluster-cpufreq.yaml4 $id: http://devicetree.org/schemas/cpufreq/apple,cluster-cpufreq.yaml#
7 title: Apple SoC cluster cpufreq device
13 Apple SoCs (e.g. M1) have a per-cpu-cluster DVFS controller that is part of
14 the cluster management register block. This binding uses the standard
23 - apple,t8103-cluster-cpufreq
24 - apple,t8112-cluster-cpufreq
25 - const: apple,cluster-cpufreq
27 - const: apple,t6000-cluster-cpufreq
28 - const: apple,t8103-cluster-cpufreq
29 - const: apple,cluster-cpufreq
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/linux-6.12.1/drivers/clk/mvebu/
Dap-cpu-clk.c127 * struct ap806_clk: CPU cluster clock controller instance
128 * @cluster: Cluster clock controller index
129 * @clk_name: Cluster clock controller name
130 * @dev : Cluster clock device
131 * @hw: HW specific structure of Cluster clock controller
135 unsigned int cluster; member
151 (clk->cluster * clk->pll_regs->cluster_offset); in ap_cpu_clk_recalc_rate()
167 (clk->cluster * clk->pll_regs->cluster_offset); in ap_cpu_clk_set_rate()
169 (clk->cluster * clk->pll_regs->cluster_offset); in ap_cpu_clk_set_rate()
171 (clk->cluster * clk->pll_regs->cluster_offset); in ap_cpu_clk_set_rate()
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/linux-6.12.1/fs/fat/
Dcache.c7 * Mar 1999. AV. Changed cache, so that it uses the starting cluster instead
21 int fcluster; /* cluster number in the file. */
22 int dcluster; /* cluster number on disk. */
123 /* Find the same part as "new" in cluster-chain. */ in fat_cache_merge()
225 int fat_get_cluster(struct inode *inode, int cluster, int *fclus, int *dclus) in fat_get_cluster() argument
240 "%s: invalid start cluster (i_pos %lld, start %08x)", in fat_get_cluster()
244 if (cluster == 0) in fat_get_cluster()
247 if (fat_cache_lookup(inode, cluster, &cid, fclus, dclus) < 0) { in fat_get_cluster()
256 while (*fclus < cluster) { in fat_get_cluster()
257 /* prevent the infinite loop of cluster chain */ in fat_get_cluster()
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/linux-6.12.1/drivers/cpuidle/
Dcpuidle-big_little.c32 * cluster state since, when all CPUs in a cluster hit it, the cluster
35 * There is no notion of cluster states in the menu governor, so CPUs
36 * have to define CPU states where possibly the cluster will be shutdown
38 * at random times; however the cluster state provides target_residency
39 * values as if all CPUs in a cluster enter the state at once; this is
46 * current cluster operating point. It is the time it takes to get the CPU
47 * up and running when the CPU is powered up on cluster wake-up from shutdown.
51 * target_residency: it is the minimum amount of time the cluster has
52 * to be down to break even in terms of power consumption. cluster
70 .desc = "ARM little-cluster power down",
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/linux-6.12.1/tools/perf/pmu-events/arch/s390/cf_z14/
Dextended.json132 "BriefDescription": "L1D On-Cluster L3 Sourced Writes",
133 …1 Data cache directory where the returned cache line was sourced from On-Cluster Level-3 cache wit…
139 "BriefDescription": "L1D On-Cluster Memory Sourced Writes",
140 … Level-1 Data cache directory where the returned cache line was sourced from an On-Cluster memory."
146 "BriefDescription": "L1D On-Cluster L3 Sourced Writes with Intervention",
147 …ata cache directory where the returned cache line was sourced from an On-Cluster Level-3 cache wit…
153 "BriefDescription": "L1D Off-Cluster L3 Sourced Writes",
154 …ta cache directory where the returned cache line was sourced from an Off-Cluster Level-3 cache wit…
160 "BriefDescription": "L1D Off-Cluster Memory Sourced Writes",
161 …he Level-1 Data cache directory where the returned cache line was sourced from Off-Cluster memory."
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/linux-6.12.1/tools/perf/pmu-events/arch/s390/cf_z15/
Dextended.json132 "BriefDescription": "L1D On-Cluster L3 Sourced Writes",
133 …1 Data cache directory where the returned cache line was sourced from On-Cluster Level-3 cache wit…
139 "BriefDescription": "L1D On-Cluster Memory Sourced Writes",
140 … Level-1 Data cache directory where the returned cache line was sourced from an On-Cluster memory."
146 "BriefDescription": "L1D On-Cluster L3 Sourced Writes with Intervention",
147 …ata cache directory where the returned cache line was sourced from an On-Cluster Level-3 cache wit…
153 "BriefDescription": "L1D Off-Cluster L3 Sourced Writes",
154 …ta cache directory where the returned cache line was sourced from an Off-Cluster Level-3 cache wit…
160 "BriefDescription": "L1D Off-Cluster Memory Sourced Writes",
161 …he Level-1 Data cache directory where the returned cache line was sourced from Off-Cluster memory."
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