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/linux/arch/arm/common/
H A 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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H A 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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/linux/arch/arm/mach-sunxi/
H A 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/arch/arm/mach-versatile/
H A 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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/linux/Documentation/arch/arm/
H A 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/fs/ocfs2/cluster/
H A 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/arch/arm/mach-exynos/
H A 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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H A Dplatsmp.c136 * exynos_cluster_power_down() - power down the specified cluster
137 * @cluster: the cluster to power down
139 void exynos_cluster_power_down(int cluster) in exynos_cluster_power_down() argument
141 pmu_raw_writel(0, EXYNOS_COMMON_CONFIGURATION(cluster)); in exynos_cluster_power_down()
145 * exynos_cluster_power_up() - power up the specified cluster
146 * @cluster: the cluster to power up
148 void exynos_cluster_power_up(int cluster) in exynos_cluster_power_up() argument
151 EXYNOS_COMMON_CONFIGURATION(cluster)); in exynos_cluster_power_up()
155 * exynos_cluster_power_state() - returns the power state of the cluster
156 * @cluster: the cluster to retrieve the power state from
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/linux/arch/arm/include/asm/
H A 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/arch/arm/mach-hisi/
H A 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/Documentation/ABI/testing/
H A 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/drivers/cpufreq/
H A 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
78 policy->freq_table = data->clusters[cluster].table; in tegra186_cpufreq_init()
82 /* set same policy for all cpus in a cluster */ in tegra186_cpufreq_init()
84 if (data->cpus[cpu].bpmp_cluster_id == cluster) in tegra186_cpufreq_init()
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/linux/arch/x86/kernel/apic/
H A 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/drivers/clk/mvebu/
H A 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/fs/fat/
H A 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/tools/perf/pmu-events/arch/s390/cf_z14/
H A 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/drivers/remoteproc/
H A Dxlnx_r5_remoteproc.c33 * settings for RPU cluster mode which
34 * reflects possible values of xlnx,cluster-mode dt-property
122 /* In lockstep mode cluster uses each 64KB TCM from second core as well */
160 * struct zynqmp_r5_cluster - remoteproc cluster's internal data
162 * @dev: r5f subsystem cluster device node
163 * @mode: cluster mode of type zynqmp_r5_cluster_mode
164 * @core_count: number of r5 cores used for this cluster mode
1049 static int zynqmp_r5_get_tcm_node_from_dt(struct zynqmp_r5_cluster *cluster) in zynqmp_r5_get_tcm_node_from_dt() argument
1061 for (i = 0; i < cluster->core_count; i++) { in zynqmp_r5_get_tcm_node_from_dt()
1062 r5_core = cluster->r5_cores[i]; in zynqmp_r5_get_tcm_node_from_dt()
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/linux/Documentation/mm/
H A Dswap-table.rst9 Swap table implements swap cache as a per-cluster swap cache value array.
45 in a swap in or swap out path. We should already have the swap cluster,
48 If we have a per-cluster array to store swap cache value in the cluster.
49 Swap cache lookup within the cluster can be a very simple array lookup.
51 We give such a per-cluster swap cache value array a name: the swap table.
54 PTE. The size of a swap table for one swap cluster typically matches a PTE
63 Swap table modification requires taking the cluster lock. If a folio
65 locked prior to the cluster lock. After adding or removing is done, the
/linux/tools/perf/pmu-events/arch/s390/cf_z15/
H A 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/fs/ext4/
H A Dextents_status.h88 * Pending cluster reservations for bigalloc file systems
90 * A cluster with a pending reservation is a logical cluster shared by at
93 * reservation is said to be pending because a cluster reservation would
94 * have to be taken in the event all blocks in the cluster shared with
98 * The set of pending cluster reservations is an auxiliary data structure
99 * used with the extents status tree to implement reserved cluster/block
101 * records all pending cluster reservations.
106 * reserved cluster count if it results in the removal of all delayed
107 * and unwritten extents (blocks) from a cluster that is not shared with a
109 * whether the cluster is shared can be done by searching for a pending
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/linux/Documentation/driver-api/md/
H A Dmd-cluster.rst2 MD Cluster
5 The cluster MD is a shared-device RAID for a cluster, it supports
12 Separate write-intent-bitmaps are used for each cluster node.
45 node joins the cluster, it acquires the lock in PW mode and it stays
46 so during the lifetime the node is part of the cluster. The lock
55 joins the cluster.
128 The DLM LVB is used to communicate within nodes of the cluster. There
145 acknowledged by all nodes in the cluster. The BAST of the resource
216 When a node fails, the DLM informs the cluster with the slot
217 number. The node starts a cluster recovery thread. The cluster
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/linux/arch/mips/kernel/
H A Dsmp-cps.c44 static void power_up_other_cluster(unsigned int cluster) in power_up_other_cluster() argument
49 mips_cm_lock_other(cluster, CM_GCR_Cx_OTHER_CORE_CM, 0, in power_up_other_cluster()
60 mips_cm_lock_other(cluster, 0, 0, CM_GCR_Cx_OTHER_BLOCK_GLOBAL); in power_up_other_cluster()
67 mips_cm_lock_other(cluster, CM_GCR_Cx_OTHER_CORE_CM, 0, in power_up_other_cluster()
80 pr_warn("Waiting for cluster %u CM to power up... STAT_CONF=0x%x\n", in power_up_other_cluster()
81 cluster, stat); in power_up_other_cluster()
89 static unsigned __init core_vpe_count(unsigned int cluster, unsigned core) in core_vpe_count() argument
91 return min(smp_max_threads, mips_cps_numvps(cluster, core)); in core_vpe_count()
236 /* Use the number of VPEs in cluster 0 core 0 for smp_num_siblings */ in cps_smp_setup()
288 /* The calibration has to be done on the primary CPU of the cluster */ in calibrate_delay_is_known()
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/linux/mm/
H A Dswap.h22 * We use this to track usage of a cluster. A cluster is a block of swap disk
25 * get a free cluster.
27 * The flags field determines if a cluster is free. This is
28 * protected by cluster lock.
34 * elements corresponding to the swap cluster.
43 /* All on-list cluster must have a non-zero flag. */
45 CLUSTER_FLAG_NONE = 0, /* For temporary off-list cluster */
121 * swap_cluster_lock - Lock and return the swap cluster of given offset.
122 * @si: swap device the cluster belongs to.
144 * swap_cluster_get_and_lock - Locks the cluster that holds a folio's entries.
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/linux/Documentation/devicetree/bindings/phy/
H A Dmarvell,armada-375-usb-cluster.yaml4 $id: http://devicetree.org/schemas/phy/marvell,armada-375-usb-cluster.yaml#
7 title: Armada 375 USB Cluster
14 Control register for the Armada 375 USB cluster, managing USB2 and USB3 features.
18 const: marvell,armada-375-usb-cluster
36 usbcluster: usb-cluster@18400 {
37 compatible = "marvell,armada-375-usb-cluster";
/linux/fs/exfat/
H A Dcache.c7 * Mar 1999. AV. Changed cache, so that it uses the starting cluster instead
25 unsigned int fcluster; /* cluster number in the file. */
26 unsigned int dcluster; /* cluster number on disk. */
127 /* Find the same part as "new" in cluster-chain. */ in exfat_cache_merge()
236 int exfat_get_cluster(struct inode *inode, unsigned int cluster, in exfat_get_cluster() argument
259 * Don`t use exfat_cache if zero offset or non-cluster allocation in exfat_get_cluster()
261 if (cluster == 0 || *dclus == EXFAT_EOF_CLUSTER) in exfat_get_cluster()
266 if (exfat_cache_lookup(inode, cluster, &cid, fclus, dclus) == in exfat_get_cluster()
278 if (*fclus == cluster) in exfat_get_cluster()
281 while (*fclus < cluster) { in exfat_get_cluster()
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