| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Arnd Bergmann | 932 | 55.31% | 18 | 23.68% |
| Christoph Hellwig | 291 | 17.27% | 22 | 28.95% |
| Jeremy Kerr | 176 | 10.45% | 11 | 14.47% |
| Dwayne Grant Mcconnell | 97 | 5.76% | 2 | 2.63% |
| Mark Nutter | 38 | 2.26% | 3 | 3.95% |
| Luke Browning | 37 | 2.20% | 4 | 5.26% |
| Bob Nelson | 36 | 2.14% | 2 | 2.63% |
| Michael Ellerman | 19 | 1.13% | 3 | 3.95% |
| Al Viro | 15 | 0.89% | 4 | 5.26% |
| Andre Detsch | 13 | 0.77% | 1 | 1.32% |
| Benjamin Herrenschmidt | 12 | 0.71% | 1 | 1.32% |
| Masato Noguchi | 12 | 0.71% | 1 | 1.32% |
| Ingo Molnar | 3 | 0.18% | 1 | 1.32% |
| Thomas Gleixner | 2 | 0.12% | 1 | 1.32% |
| Coly Li | 1 | 0.06% | 1 | 1.32% |
| Arjan van de Ven | 1 | 0.06% | 1 | 1.32% |
| Total | 1685 | 76 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * SPU file system * * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 * * Author: Arnd Bergmann <arndb@de.ibm.com> */ #ifndef SPUFS_H #define SPUFS_H #include <linux/kref.h> #include <linux/mutex.h> #include <linux/spinlock.h> #include <linux/fs.h> #include <linux/cpumask.h> #include <linux/sched/signal.h> #include <asm/spu.h> #include <asm/spu_csa.h> #include <asm/spu_info.h> #define SPUFS_PS_MAP_SIZE 0x20000 #define SPUFS_MFC_MAP_SIZE 0x1000 #define SPUFS_CNTL_MAP_SIZE 0x1000 #define SPUFS_SIGNAL_MAP_SIZE PAGE_SIZE #define SPUFS_MSS_MAP_SIZE 0x1000 /* The magic number for our file system */ enum { SPUFS_MAGIC = 0x23c9b64e, }; struct spu_context_ops; struct spu_gang; /* ctx->sched_flags */ enum { SPU_SCHED_NOTIFY_ACTIVE, SPU_SCHED_WAS_ACTIVE, /* was active upon spu_acquire_saved() */ SPU_SCHED_SPU_RUN, /* context is within spu_run */ }; enum { SWITCH_LOG_BUFSIZE = 4096, }; enum { SWITCH_LOG_START, SWITCH_LOG_STOP, SWITCH_LOG_EXIT, }; struct switch_log { wait_queue_head_t wait; unsigned long head; unsigned long tail; struct switch_log_entry { struct timespec64 tstamp; s32 spu_id; u32 type; u32 val; u64 timebase; } log[]; }; struct spu_context { struct spu *spu; /* pointer to a physical SPU */ struct spu_state csa; /* SPU context save area. */ spinlock_t mmio_lock; /* protects mmio access */ struct address_space *local_store; /* local store mapping. */ struct address_space *mfc; /* 'mfc' area mappings. */ struct address_space *cntl; /* 'control' area mappings. */ struct address_space *signal1; /* 'signal1' area mappings. */ struct address_space *signal2; /* 'signal2' area mappings. */ struct address_space *mss; /* 'mss' area mappings. */ struct address_space *psmap; /* 'psmap' area mappings. */ struct mutex mapping_lock; u64 object_id; /* user space pointer for oprofile */ enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state; struct mutex state_mutex; struct mutex run_mutex; struct mm_struct *owner; struct kref kref; wait_queue_head_t ibox_wq; wait_queue_head_t wbox_wq; wait_queue_head_t stop_wq; wait_queue_head_t mfc_wq; wait_queue_head_t run_wq; u32 tagwait; struct spu_context_ops *ops; struct work_struct reap_work; unsigned long flags; unsigned long event_return; struct list_head gang_list; struct spu_gang *gang; struct kref *prof_priv_kref; void ( * prof_priv_release) (struct kref *kref); /* owner thread */ pid_t tid; /* scheduler fields */ struct list_head rq; unsigned int time_slice; unsigned long sched_flags; cpumask_t cpus_allowed; int policy; int prio; int last_ran; /* statistics */ struct { /* updates protected by ctx->state_mutex */ enum spu_utilization_state util_state; unsigned long long tstamp; /* time of last state switch */ unsigned long long times[SPU_UTIL_MAX]; unsigned long long vol_ctx_switch; unsigned long long invol_ctx_switch; unsigned long long min_flt; unsigned long long maj_flt; unsigned long long hash_flt; unsigned long long slb_flt; unsigned long long slb_flt_base; /* # at last ctx switch */ unsigned long long class2_intr; unsigned long long class2_intr_base; /* # at last ctx switch */ unsigned long long libassist; } stats; /* context switch log */ struct switch_log *switch_log; struct list_head aff_list; int aff_head; int aff_offset; }; struct spu_gang { struct list_head list; struct mutex mutex; struct kref kref; int contexts; struct spu_context *aff_ref_ctx; struct list_head aff_list_head; struct mutex aff_mutex; int aff_flags; struct spu *aff_ref_spu; atomic_t aff_sched_count; }; /* Flag bits for spu_gang aff_flags */ #define AFF_OFFSETS_SET 1 #define AFF_MERGED 2 struct mfc_dma_command { int32_t pad; /* reserved */ uint32_t lsa; /* local storage address */ uint64_t ea; /* effective address */ uint16_t size; /* transfer size */ uint16_t tag; /* command tag */ uint16_t class; /* class ID */ uint16_t cmd; /* command opcode */ }; /* SPU context query/set operations. */ struct spu_context_ops { int (*mbox_read) (struct spu_context * ctx, u32 * data); u32(*mbox_stat_read) (struct spu_context * ctx); __poll_t (*mbox_stat_poll)(struct spu_context *ctx, __poll_t events); int (*ibox_read) (struct spu_context * ctx, u32 * data); int (*wbox_write) (struct spu_context * ctx, u32 data); u32(*signal1_read) (struct spu_context * ctx); void (*signal1_write) (struct spu_context * ctx, u32 data); u32(*signal2_read) (struct spu_context * ctx); void (*signal2_write) (struct spu_context * ctx, u32 data); void (*signal1_type_set) (struct spu_context * ctx, u64 val); u64(*signal1_type_get) (struct spu_context * ctx); void (*signal2_type_set) (struct spu_context * ctx, u64 val); u64(*signal2_type_get) (struct spu_context * ctx); u32(*npc_read) (struct spu_context * ctx); void (*npc_write) (struct spu_context * ctx, u32 data); u32(*status_read) (struct spu_context * ctx); char*(*get_ls) (struct spu_context * ctx); void (*privcntl_write) (struct spu_context *ctx, u64 data); u32 (*runcntl_read) (struct spu_context * ctx); void (*runcntl_write) (struct spu_context * ctx, u32 data); void (*runcntl_stop) (struct spu_context * ctx); void (*master_start) (struct spu_context * ctx); void (*master_stop) (struct spu_context * ctx); int (*set_mfc_query)(struct spu_context * ctx, u32 mask, u32 mode); u32 (*read_mfc_tagstatus)(struct spu_context * ctx); u32 (*get_mfc_free_elements)(struct spu_context *ctx); int (*send_mfc_command)(struct spu_context * ctx, struct mfc_dma_command * cmd); void (*dma_info_read) (struct spu_context * ctx, struct spu_dma_info * info); void (*proxydma_info_read) (struct spu_context * ctx, struct spu_proxydma_info * info); void (*restart_dma)(struct spu_context *ctx); }; extern struct spu_context_ops spu_hw_ops; extern struct spu_context_ops spu_backing_ops; struct spufs_inode_info { struct spu_context *i_ctx; struct spu_gang *i_gang; struct inode vfs_inode; int i_openers; }; #define SPUFS_I(inode) \ container_of(inode, struct spufs_inode_info, vfs_inode) struct spufs_tree_descr { const char *name; const struct file_operations *ops; umode_t mode; size_t size; }; extern const struct spufs_tree_descr spufs_dir_contents[]; extern const struct spufs_tree_descr spufs_dir_nosched_contents[]; extern const struct spufs_tree_descr spufs_dir_debug_contents[]; /* system call implementation */ extern struct spufs_calls spufs_calls; struct coredump_params; long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *status); long spufs_create(struct path *nd, struct dentry *dentry, unsigned int flags, umode_t mode, struct file *filp); /* ELF coredump callbacks for writing SPU ELF notes */ extern int spufs_coredump_extra_notes_size(void); extern int spufs_coredump_extra_notes_write(struct coredump_params *cprm); extern const struct file_operations spufs_context_fops; /* gang management */ struct spu_gang *alloc_spu_gang(void); struct spu_gang *get_spu_gang(struct spu_gang *gang); int put_spu_gang(struct spu_gang *gang); void spu_gang_remove_ctx(struct spu_gang *gang, struct spu_context *ctx); void spu_gang_add_ctx(struct spu_gang *gang, struct spu_context *ctx); /* fault handling */ int spufs_handle_class1(struct spu_context *ctx); int spufs_handle_class0(struct spu_context *ctx); /* affinity */ struct spu *affinity_check(struct spu_context *ctx); /* context management */ extern atomic_t nr_spu_contexts; static inline int __must_check spu_acquire(struct spu_context *ctx) { return mutex_lock_interruptible(&ctx->state_mutex); } static inline void spu_release(struct spu_context *ctx) { mutex_unlock(&ctx->state_mutex); } struct spu_context * alloc_spu_context(struct spu_gang *gang); void destroy_spu_context(struct kref *kref); struct spu_context * get_spu_context(struct spu_context *ctx); int put_spu_context(struct spu_context *ctx); void spu_unmap_mappings(struct spu_context *ctx); void spu_forget(struct spu_context *ctx); int __must_check spu_acquire_saved(struct spu_context *ctx); void spu_release_saved(struct spu_context *ctx); int spu_stopped(struct spu_context *ctx, u32 * stat); void spu_del_from_rq(struct spu_context *ctx); int spu_activate(struct spu_context *ctx, unsigned long flags); void spu_deactivate(struct spu_context *ctx); void spu_yield(struct spu_context *ctx); void spu_switch_notify(struct spu *spu, struct spu_context *ctx); void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, u32 type, u32 val); void spu_set_timeslice(struct spu_context *ctx); void spu_update_sched_info(struct spu_context *ctx); void __spu_update_sched_info(struct spu_context *ctx); int __init spu_sched_init(void); void spu_sched_exit(void); extern char *isolated_loader; /* * spufs_wait * Same as wait_event_interruptible(), except that here * we need to call spu_release(ctx) before sleeping, and * then spu_acquire(ctx) when awoken. * * Returns with state_mutex re-acquired when successful or * with -ERESTARTSYS and the state_mutex dropped when interrupted. */ #define spufs_wait(wq, condition) \ ({ \ int __ret = 0; \ DEFINE_WAIT(__wait); \ for (;;) { \ prepare_to_wait(&(wq), &__wait, TASK_INTERRUPTIBLE); \ if (condition) \ break; \ spu_release(ctx); \ if (signal_pending(current)) { \ __ret = -ERESTARTSYS; \ break; \ } \ schedule(); \ __ret = spu_acquire(ctx); \ if (__ret) \ break; \ } \ finish_wait(&(wq), &__wait); \ __ret; \ }) size_t spu_wbox_write(struct spu_context *ctx, u32 data); size_t spu_ibox_read(struct spu_context *ctx, u32 *data); /* irq callback funcs. */ void spufs_ibox_callback(struct spu *spu); void spufs_wbox_callback(struct spu *spu); void spufs_stop_callback(struct spu *spu, int irq); void spufs_mfc_callback(struct spu *spu); void spufs_dma_callback(struct spu *spu, int type); extern struct spu_coredump_calls spufs_coredump_calls; struct spufs_coredump_reader { char *name; ssize_t (*read)(struct spu_context *ctx, char __user *buffer, size_t size, loff_t *pos); u64 (*get)(struct spu_context *ctx); size_t size; }; extern const struct spufs_coredump_reader spufs_coredump_read[]; extern int spufs_coredump_num_notes; extern int spu_init_csa(struct spu_state *csa); extern void spu_fini_csa(struct spu_state *csa); extern int spu_save(struct spu_state *prev, struct spu *spu); extern int spu_restore(struct spu_state *new, struct spu *spu); extern int spu_switch(struct spu_state *prev, struct spu_state *new, struct spu *spu); extern int spu_alloc_lscsa(struct spu_state *csa); extern void spu_free_lscsa(struct spu_state *csa); extern void spuctx_switch_state(struct spu_context *ctx, enum spu_utilization_state new_state); #endif
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