57#include <sys/sysctl.h>
59#include <sys/malloc.h>
77static struct sx dpcpu_lock;
78uintptr_t dpcpu_off[MAXCPU];
79struct pcpu *cpuid_to_pcpu[MAXCPU];
80struct cpuhead cpuhead = STAILQ_HEAD_INITIALIZER(cpuhead);
86pcpu_init(
struct pcpu *pcpu,
int cpuid,
size_t size)
90 KASSERT(cpuid >= 0 && cpuid < MAXCPU,
91 (
"pcpu_init: invalid cpuid %d", cpuid));
92 pcpu->pc_cpuid = cpuid;
93 cpuid_to_pcpu[cpuid] = pcpu;
94 STAILQ_INSERT_TAIL(&cpuhead, pcpu, pc_allcpu);
95 cpu_pcpu_init(pcpu, cpuid, size);
96 pcpu->pc_rm_queue.rmq_next = &pcpu->pc_rm_queue;
97 pcpu->pc_rm_queue.rmq_prev = &pcpu->pc_rm_queue;
98 pcpu->pc_zpcpu_offset = zpcpu_offset_cpu(cpuid);
107 pcpu->pc_dynamic = (uintptr_t)dpcpu - DPCPU_START;
112 memcpy(dpcpu, (
void *)DPCPU_START, DPCPU_BYTES);
117 dpcpu_off[cpuid] = pcpu->pc_dynamic;
125 df =
malloc(
sizeof(*df), M_PCPU, M_WAITOK | M_ZERO);
126 df->
df_start = (uintptr_t)&DPCPU_NAME(modspace);
127 df->
df_len = DPCPU_MODMIN;
128 TAILQ_INSERT_HEAD(&dpcpu_head, df, df_link);
129 sx_init(&dpcpu_lock,
"dpcpu alloc lock");
147 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_PCPU);
149 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_PCPU);
151 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_PCPU);
153 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_PCPU);
155 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_PCPU);
171 size = roundup2(size,
sizeof(
void *));
172 sx_xlock(&dpcpu_lock);
173 TAILQ_FOREACH(df, &dpcpu_head, df_link) {
178 TAILQ_REMOVE(&dpcpu_head, df, df_link);
187 sx_xunlock(&dpcpu_lock);
203 size = roundup2(size,
sizeof(
void *));
204 start = (uintptr_t)s;
210 sx_xlock(&dpcpu_lock);
211 TAILQ_FOREACH(df, &dpcpu_head, df_link) {
220 dn = TAILQ_NEXT(df, df_link);
223 TAILQ_REMOVE(&dpcpu_head, dn, df_link);
226 sx_xunlock(&dpcpu_lock);
232 sx_xunlock(&dpcpu_lock);
236 dn =
malloc(
sizeof(*df), M_PCPU, M_WAITOK | M_ZERO);
240 TAILQ_INSERT_BEFORE(df, dn, df_link);
242 TAILQ_INSERT_TAIL(&dpcpu_head, dn, df_link);
243 sx_xunlock(&dpcpu_lock);
257 dpcpu = dpcpu_off[i];
260 memcpy((
void *)(dpcpu + (uintptr_t)s), s, size);
263 memcpy((
void *)(dpcpu_off[0] + (uintptr_t)s), s, size);
274 STAILQ_REMOVE(&cpuhead, pcpu, pcpu, pc_allcpu);
275 cpuid_to_pcpu[pcpu->pc_cpuid] = NULL;
276 dpcpu_off[pcpu->pc_cpuid] = 0;
286 return (cpuid_to_pcpu[cpuid]);
298 dpcpu = dpcpu_off[i];
301 count += *(int64_t *)(dpcpu + (uintptr_t)arg1);
303 return (SYSCTL_OUT(req, &
count,
sizeof(
count)));
315 dpcpu = dpcpu_off[i];
318 count += *(
long *)(dpcpu + (uintptr_t)arg1);
320 return (SYSCTL_OUT(req, &
count,
sizeof(
count)));
332 dpcpu = dpcpu_off[i];
335 count += *(
int *)(dpcpu + (uintptr_t)arg1);
337 return (SYSCTL_OUT(req, &
count,
sizeof(
count)));
341DB_SHOW_COMMAND(dpcpu_off, db_show_dpcpu_off)
346 db_printf(
"dpcpu_off[%2d] = 0x%jx (+ DPCPU_START = %p)\n",
347 id, (uintmax_t)dpcpu_off[
id],
348 (
void *)(uintptr_t)(dpcpu_off[
id] + DPCPU_START));
353show_pcpu(
struct pcpu *pc)
357 db_printf(
"cpuid = %d\n", pc->pc_cpuid);
358 db_printf(
"dynamic pcpu = %p\n", (
void *)pc->pc_dynamic);
359 db_printf(
"curthread = ");
360 td = pc->pc_curthread;
362 db_printf(
"%p: pid %d tid %d critnest %d \"%s\"\n", td,
363 td->td_proc->p_pid, td->td_tid, td->td_critnest,
367 db_printf(
"curpcb = %p\n", pc->pc_curpcb);
368 db_printf(
"fpcurthread = ");
369 td = pc->pc_fpcurthread;
371 db_printf(
"%p: pid %d \"%s\"\n", td, td->td_proc->p_pid,
375 db_printf(
"idlethread = ");
376 td = pc->pc_idlethread;
378 db_printf(
"%p: tid %d \"%s\"\n", td, td->td_tid, td->td_name);
384 db_printf(
"curvnet = %p\n", pc->pc_curthread->td_vnet);
388 db_printf(
"spin locks held:\n");
393DB_SHOW_COMMAND(pcpu, db_show_pcpu)
399 id = ((
addr >> 4) % 16) * 10 + (
addr % 16);
401 id = PCPU_GET(cpuid);
404 db_printf(
"CPU %d not found\n",
id);
410DB_SHOW_ALL_COMMAND(pcpu, db_show_cpu_all)
415 db_printf(
"Current CPU: %d\n\n", PCPU_GET(cpuid));
424DB_SHOW_ALIAS(allpcpu, db_show_cpu_all);
void *() malloc(size_t size, struct malloc_type *mtp, int flags)
void free(void *addr, struct malloc_type *mtp)
struct tidbatch __aligned
static void pcpu_zones_startup(void)
void dpcpu_init(void *dpcpu, int cpuid)
static void dpcpu_startup(void *dummy __unused)
int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS)
void pcpu_destroy(struct pcpu *pcpu)
int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS)
struct pcpu * pcpu_find(u_int cpuid)
SYSINIT(dpcpu, SI_SUB_KLD, SI_ORDER_FIRST, dpcpu_startup, NULL)
int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS)
void dpcpu_copy(void *s, int size)
void * dpcpu_alloc(int size)
DPCPU_DEFINE_STATIC(char, modspace[DPCPU_MODMIN] __aligned(__alignof(void *)))
static MALLOC_DEFINE(M_PCPU, "Per-cpu", "Per-cpu resource accouting.")
static TAILQ_HEAD(dpcpu_free)
void dpcpu_free(void *s, int size)
int witness_list_locks(struct lock_list_entry **lock_list, int(*prnt)(const char *fmt,...))