* See LICENSE for details.
*/
-#ifndef ROS_INC_SMP_H
-#define ROS_INC_SMP_H
+#pragma once
/* SMP related functions */
#include <arch/smp.h>
-#include <arch/types.h>
+#include <ros/common.h>
+#include <sys/queue.h>
#include <trap.h>
#include <atomic.h>
-#include <workqueue.h>
+#include <process.h>
+#include <syscall.h>
+#include <alarm.h>
+#include <trace.h>
+#include <core_set.h>
-// be careful changing this, esp if you go over 16
-#define NUM_HANDLER_WRAPPERS 5
+#define CPU_STATE_IRQ 0
+#define CPU_STATE_KERNEL 1
+#define CPU_STATE_USER 2
+#define CPU_STATE_IDLE 3
+#define NR_CPU_STATES 4
-typedef struct HandlerWrapper {
- checklist_t* cpu_list;
- uint8_t vector;
-} handler_wrapper_t;
+static char *cpu_state_names[NR_CPU_STATES] =
+{
+ "irq",
+ "kern",
+ "user",
+ "idle",
+};
-// will want this padded out to cacheline alignment
struct per_cpu_info {
- uint32_t lock;
- struct workqueue workqueue;
-};
-extern struct per_cpu_info per_cpu_info[MAX_NUM_CPUS];
-extern volatile uint8_t num_cpus;
+#ifdef CONFIG_X86
+ uintptr_t stacktop; /* must be first */
+ int coreid; /* must be second */
+ int nmi_status;
+ uintptr_t nmi_worker_stacktop;
+ int vmx_enabled;
+ int guest_pcoreid;
+#endif
+ spinlock_t lock;
+ /* Process management */
+ // cur_proc should be valid on all cores that are not management cores.
+ struct proc *cur_proc; /* which process context is loaded */
+ struct proc *owning_proc; /* proc owning the core / cur_ctx */
+ uint32_t owning_vcoreid; /* vcoreid of owning proc (if applicable */
+ struct user_context *cur_ctx; /* user ctx we came in on (can be 0) */
+ struct user_context actual_ctx; /* storage for cur_ctx */
+ uint32_t __ctx_depth; /* don't access directly. see trap.h. */
+ int __lock_checking_enabled;/* == 1, enables spinlock depth checking */
+ struct kthread *cur_kthread;/* tracks the running kernel context */
+ struct kthread *spare; /* useful when restarting */
+ struct timer_chain tchain; /* for the per-core alarm */
+ unsigned int lock_depth;
+ struct trace_ring traces;
+ int cpu_state;
+ uint64_t last_tick_cnt;
+ uint64_t state_ticks[NR_CPU_STATES];
+ /* TODO: 64b (not sure if we'll need these at all */
+#ifdef CONFIG_X86
+ taskstate_t *tss;
+ segdesc_t *gdt;
+#endif
+ /* KMSGs */
+ spinlock_t immed_amsg_lock;
+ struct kernel_msg_list immed_amsgs;
+ spinlock_t routine_amsg_lock;
+ struct kernel_msg_list routine_amsgs;
+ /* profiling -- opaque to all but the profiling code. */
+ void *profiling;
+}__attribute__((aligned(ARCH_CL_SIZE)));
+
+/* Allows the kernel to figure out what process is running on this core. Can be
+ * used just like a pointer to a struct proc. */
+#define current per_cpu_info[core_id()].cur_proc
+/* Allows the kernel to figure out what *user* ctx is on this core's stack. Can
+ * be used just like a pointer to a struct user_context. Note the distinction
+ * between kernel and user contexts. The kernel always returns to its nested,
+ * interrupted contexts via iret/etc. We never do that for user contexts. */
+#define current_ctx per_cpu_info[core_id()].cur_ctx
+
+typedef struct per_cpu_info per_cpu_info_t;
+extern per_cpu_info_t per_cpu_info[MAX_NUM_CORES];
/* SMP bootup functions */
void smp_boot(void);
-void smp_idle(void);
+void smp_idle(void) __attribute__((noreturn));
+void smp_percpu_init(void); // this must be called by each core individually
+void __arch_pcpu_init(uint32_t coreid); /* each arch has one of these */
+
+void __set_cpu_state(struct per_cpu_info *pcpui, int state);
+void reset_cpu_state_ticks(int coreid);
/* SMP utility functions */
-int smp_call_function_self(isr_t handler, void* data,
- handler_wrapper_t** wait_wrapper);
-int smp_call_function_all(isr_t handler, void* data,
- handler_wrapper_t** wait_wrapper);
-int smp_call_function_single(uint8_t dest, isr_t handler, void* data,
- handler_wrapper_t** wait_wrapper);
-int smp_call_wait(handler_wrapper_t*SAFE wrapper);
-
-#endif /* !ROS_INC_SMP_H */
+int smp_call_function_self(isr_t handler, void *data,
+ handler_wrapper_t **wait_wrapper);
+int smp_call_function_all(isr_t handler, void *data,
+ handler_wrapper_t **wait_wrapper);
+int smp_call_function_single(uint32_t dest, isr_t handler, void *data,
+ handler_wrapper_t **wait_wrapper);
+int smp_call_wait(handler_wrapper_t *wrapper);
+
+/* PCPUI Trace Rings: */
+struct pcpu_trace_event {
+ int type;
+ int arg0;
+ uint64_t arg1;
+};
+
+/* If you want to add a type, use the next available number, increment NR_TYPES,
+ * use your own macro, and provide a handler. Add your handler to
+ * pcpui_tr_handlers in smp.c. */
+#define PCPUI_TR_TYPE_NULL 0
+#define PCPUI_TR_TYPE_KMSG 1
+#define PCPUI_TR_TYPE_LOCKS 2
+#define PCPUI_NR_TYPES 3
+
+#ifdef CONFIG_TRACE_KMSGS
+
+# define pcpui_trace_kmsg(pcpui, pc) \
+{ \
+ struct pcpu_trace_event *e = get_trace_slot_racy(&pcpui->traces); \
+ if (e) { \
+ e->type = PCPUI_TR_TYPE_KMSG; \
+ e->arg1 = pc; \
+ } \
+}
+
+#else
+
+# define pcpui_trace_kmsg(pcpui, pc)
+
+#endif /* CONFIG_TRACE_KMSGS */
+
+
+#ifdef CONFIG_TRACE_LOCKS
+
+# define pcpui_trace_locks(pcpui, lock) \
+{ \
+ struct pcpu_trace_event *e = get_trace_slot_overwrite(&pcpui->traces); \
+ if (e) { \
+ e->type = PCPUI_TR_TYPE_LOCKS; \
+ e->arg0 = (int)tsc2usec(read_tsc()); \
+ e->arg1 = (uintptr_t)lock; \
+ } \
+}
+
+#else
+
+# define pcpui_trace_locks(pcpui, lock)
+
+#endif /* CONFIG_TRACE_LOCKS */
+
+void smp_do_in_cores(const struct core_set *cset, void (*func)(void *),
+ void *opaque);
+
+/* Run the handlers for all events in a pcpui ring. Can run on all cores, or
+ * just one core. 'type' selects which event type is handled (0 for all). */
+void pcpui_tr_foreach(int coreid, int type);
+void pcpui_tr_foreach_all(int type);
+void pcpui_tr_reset_all(void);
+void pcpui_tr_reset_and_clear_all(void);
projects / akaros.git / blobdiff