diff options
Diffstat (limited to 'freebsd/sys/sys/smp.h')
| -rw-r--r-- | freebsd/sys/sys/smp.h | 78 |
1 files changed, 74 insertions, 4 deletions
diff --git a/freebsd/sys/sys/smp.h b/freebsd/sys/sys/smp.h index 776fc3a1..96a3fe59 100644 --- a/freebsd/sys/sys/smp.h +++ b/freebsd/sys/sys/smp.h @@ -17,9 +17,52 @@ #ifndef LOCORE #include <rtems/bsd/sys/cpuset.h> +#include <sys/queue.h> /* - * Topology of a NUMA or HTT system. + * Types of nodes in the topological tree. + */ +typedef enum { + /* No node has this type; can be used in topo API calls. */ + TOPO_TYPE_DUMMY, + /* Processing unit aka computing unit aka logical CPU. */ + TOPO_TYPE_PU, + /* Physical subdivision of a package. */ + TOPO_TYPE_CORE, + /* CPU L1/L2/L3 cache. */ + TOPO_TYPE_CACHE, + /* Package aka chip, equivalent to socket. */ + TOPO_TYPE_PKG, + /* NUMA node. */ + TOPO_TYPE_NODE, + /* Other logical or physical grouping of PUs. */ + /* E.g. PUs on the same dye, or PUs sharing an FPU. */ + TOPO_TYPE_GROUP, + /* The whole system. */ + TOPO_TYPE_SYSTEM +} topo_node_type; + +/* Hardware indenitifier of a topology component. */ +typedef unsigned int hwid_t; +/* Logical CPU idenitifier. */ +typedef int cpuid_t; + +/* A node in the topology. */ +struct topo_node { + struct topo_node *parent; + TAILQ_HEAD(topo_children, topo_node) children; + TAILQ_ENTRY(topo_node) siblings; + cpuset_t cpuset; + topo_node_type type; + uintptr_t subtype; + hwid_t hwid; + cpuid_t id; + int nchildren; + int cpu_count; +}; + +/* + * Scheduling topology of a NUMA or SMP system. * * The top level topology is an array of pointers to groups. Each group * contains a bitmask of cpus in its group or subgroups. It may also @@ -52,6 +95,8 @@ typedef struct cpu_group *cpu_group_t; #define CG_SHARE_L2 2 #define CG_SHARE_L3 3 +#define MAX_CACHE_LEVELS CG_SHARE_L3 + /* * Behavior modifiers for load balancing and affinity. */ @@ -60,10 +105,29 @@ typedef struct cpu_group *cpu_group_t; #define CG_FLAG_THREAD (CG_FLAG_HTT | CG_FLAG_SMT) /* Any threading. */ /* - * Convenience routines for building topologies. + * Convenience routines for building and traversing topologies. */ #ifdef SMP +void topo_init_node(struct topo_node *node); +void topo_init_root(struct topo_node *root); +struct topo_node * topo_add_node_by_hwid(struct topo_node *parent, int hwid, + topo_node_type type, uintptr_t subtype); +struct topo_node * topo_find_node_by_hwid(struct topo_node *parent, int hwid, + topo_node_type type, uintptr_t subtype); +void topo_promote_child(struct topo_node *child); +struct topo_node * topo_next_node(struct topo_node *top, + struct topo_node *node); +struct topo_node * topo_next_nonchild_node(struct topo_node *top, + struct topo_node *node); +void topo_set_pu_id(struct topo_node *node, cpuid_t id); +int topo_analyze(struct topo_node *topo_root, int all, int *pkg_count, + int *cores_per_pkg, int *thrs_per_core); + +#define TOPO_FOREACH(i, root) \ + for (i = root; i != NULL; i = topo_next_node(root, i)) + struct cpu_group *smp_topo(void); +struct cpu_group *smp_topo_alloc(u_int count); struct cpu_group *smp_topo_none(void); struct cpu_group *smp_topo_1level(int l1share, int l1count, int l1flags); struct cpu_group *smp_topo_2level(int l2share, int l2count, int l1share, @@ -71,10 +135,10 @@ struct cpu_group *smp_topo_2level(int l2share, int l2count, int l1share, struct cpu_group *smp_topo_find(struct cpu_group *top, int cpu); extern void (*cpustop_restartfunc)(void); -extern int smp_active; extern int smp_cpus; extern volatile cpuset_t started_cpus; extern volatile cpuset_t stopped_cpus; +extern volatile cpuset_t suspended_cpus; extern cpuset_t hlt_cpus_mask; extern cpuset_t logical_cpus_mask; #endif /* SMP */ @@ -86,6 +150,7 @@ extern int mp_ncpus; extern volatile int smp_started; extern cpuset_t all_cpus; +extern cpuset_t cpuset_domain[MAXMEMDOM]; /* CPUs in each NUMA domain. */ #else /* __rtems__ */ #define mp_maxid 0U #define mp_maxcpus 1 @@ -151,7 +216,7 @@ cpu_next(int i) * cpu_mp_start() will be called so that MP can be enabled. This function * should do things such as startup secondary processors. It should also * setup mp_ncpus, all_cpus, and smp_cpus. It should also ensure that - * smp_active and smp_started are initialized at the appropriate time. + * smp_started is initialized at the appropriate time. * Once cpu_mp_start() returns, machine independent MP startup code will be * executed and a simple message will be output to the console. Finally, * cpu_mp_announce() will be called so that machine dependent messages about @@ -176,11 +241,16 @@ int stop_cpus(cpuset_t); int stop_cpus_hard(cpuset_t); #if defined(__amd64__) || defined(__i386__) int suspend_cpus(cpuset_t); +int resume_cpus(cpuset_t); #endif + void smp_rendezvous_action(void); extern struct mtx smp_ipi_mtx; #endif /* SMP */ + +int quiesce_all_cpus(const char *, int); +int quiesce_cpus(cpuset_t, const char *, int); void smp_no_rendevous_barrier(void *); void smp_rendezvous(void (*)(void *), void (*)(void *), |