7ab39de989
* Introduced flag "invoke_scheduler" in the per CPU structure. It is evaluated in hardware_interrupt() (x86 only ATM). * Introduced SMP_MSG_RESCHEDULE_IF_IDLE message, which enters the scheduler when the CPU currently runs an idle thread. * Don't do dprintf() "CPU x halted!" when handling a SMP_MSG_CPU_HALT ICI message. It uses nested spinlocks and could thus potentially deadlock itself (acquire_spinlock() processes ICI messages, so it could already hold one of the locks). This is a pretty likely scenario on machines with more than two CPUs, but is also possible when the panic()ing thread holds the threads spinlock. Probably fixes #2572. * Reworked the way the kernel debugger is entered and added a "cpu" command that allows switching the CPU once in KDL. It is thus possible to get a stack trace of the thread not on the panic()ing CPU. * When a thread is added to the run queue, we do now check, if another CPU is idle and ask it to reschedule, if it is. Before this change, the CPU was continuing to idle until the quantum of the idle thread expired. Speeds up the libbe.so build about 8% on my machine (haven't tested the full Haiku image build yet). * When spinlock debugging is enabled (DEBUG_SPINLOCKS) we also record the spinlock acquirer on non-smp machines. Added "spinlock" debugger command to get the info. * Added debugger commands "ici" and "ici_message", printing info on pending ICI message respectively on a given one. * Process not only a single ICI message in acquire_spinlock() and other places, but all pending ones. * Also process ICI messages when waiting for a free one -- avoids a potential deadlock. * Mask out non-existing CPUs in send_multicast_ici(). panic() instead of just returning when there's no target CPU left. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28223 a95241bf-73f2-0310-859d-f6bbb57e9c96
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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* Copyright 2002-2005, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef KERNEL_SMP_H
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#define KERNEL_SMP_H
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#include <KernelExport.h>
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struct kernel_args;
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// intercpu messages
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enum {
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SMP_MSG_INVALIDATE_PAGE_RANGE = 0,
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SMP_MSG_INVALIDATE_PAGE_LIST,
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SMP_MSG_USER_INVALIDATE_PAGES,
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SMP_MSG_GLOBAL_INVALIDATE_PAGES,
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SMP_MSG_CPU_HALT,
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SMP_MSG_CALL_FUNCTION,
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SMP_MSG_RESCHEDULE_IF_IDLE
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};
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enum {
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SMP_MSG_FLAG_ASYNC = 0x0,
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SMP_MSG_FLAG_SYNC = 0x1,
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SMP_MSG_FLAG_FREE_ARG = 0x2,
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};
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typedef uint32 cpu_mask_t;
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typedef void (*smp_call_func)(uint32 data1, int32 currentCPU, uint32 data2, uint32 data3);
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#ifdef __cplusplus
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extern "C" {
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#endif
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status_t smp_init(struct kernel_args *args);
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status_t smp_per_cpu_init(struct kernel_args *args, int32 cpu);
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status_t smp_init_post_generic_syscalls(void);
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bool smp_trap_non_boot_cpus(int32 cpu);
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void smp_wake_up_non_boot_cpus(void);
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void smp_cpu_rendezvous(volatile uint32 *var, int current_cpu);
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void smp_send_ici(int32 targetCPU, int32 message, uint32 data, uint32 data2, uint32 data3,
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void *data_ptr, uint32 flags);
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void smp_send_multicast_ici(cpu_mask_t cpuMask, int32 message, uint32 data,
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uint32 data2, uint32 data3, void *data_ptr, uint32 flags);
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void smp_send_broadcast_ici(int32 message, uint32 data, uint32 data2, uint32 data3,
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void *data_ptr, uint32 flags);
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int32 smp_get_num_cpus(void);
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void smp_set_num_cpus(int32 numCPUs);
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int32 smp_get_current_cpu(void);
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int smp_intercpu_int_handler(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* KERNEL_SMP_H */
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