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function to return the total number of CPUs and not the highest CPU id. o Define mp_maxid based on the minimum of the actual number of CPUs in the system and MAXCPU. o In cpu_mp_add, when the CPU id of the CPU we're trying to add is larger than mp_maxid, don't add the CPU. Formerly this was based on MAXCPU. Don't count CPUs when we add them. We already know how many CPUs exist. o Replace MAXCPU with mp_maxid when used in loops that iterate over the id space. This avoids a couple of useless iterations. o In cpu_mp_unleash, use the number of CPUs to determine if we need to launch the CPUs. o Remove mp_hardware as it's not used anymore. o Move the IPI vector array from mp_machdep.c to sal.c. We use the array as a centralized place to collect vector assignments. Note that we still assign vectors to SMP specific IPIs in non-SMP configurations. Rename the array from mp_ipi_vector to ipi_vector. o Add IPI_MCA_RENDEZ and IPI_MCA_CMCV. These are used by MCA. Note that IPI_MCA_CMCV is not SMP specific. o Initialize the ipi_vector array so that we place the IPIs in sensible priority classes. The classes are relative to where the AP wake-up vector is located to guarantee that it's the highest priority (external) interrupt. Class assignment is as follows: class IPI notes x AP wake-up (normally x=15) x-1 MCA rendezvous x-2 AST, Rendezvous, stop x-3 CMCV, test
39 lines
854 B
C
39 lines
854 B
C
/*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_SMP_H_
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#define _MACHINE_SMP_H_
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#ifdef _KERNEL
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/*
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* Interprocessor interrupts for SMP. The following values are indices
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* into the IPI vector table. The SAL gives us the vector used for AP
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* wake-up. We base the other vectors on that. Keep IPI_AP_WAKEUP at
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* index 0 and IPI_MCA_RENDEZ at index 1. See sal.c for details.
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*/
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/* Architecture specific IPIs. */
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#define IPI_AP_WAKEUP 0
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#define IPI_MCA_RENDEZ 1
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#define IPI_MCA_CMCV 2
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#define IPI_TEST 3
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/* Machine independent IPIs. */
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#define IPI_AST 4
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#define IPI_RENDEZVOUS 5
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#define IPI_STOP 6
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#define IPI_COUNT 7
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#ifndef LOCORE
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extern int ipi_vector[];
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void ipi_all(int ipi);
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void ipi_all_but_self(int ipi);
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void ipi_selected(u_int64_t cpus, int ipi);
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void ipi_self(int ipi);
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#endif /* !LOCORE */
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#endif /* _KERNEL */
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#endif /* !_MACHINE_SMP_H */
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