apex-tripleo-heat-templates - Unnamed repository

Age	Commit message (Expand)	Author	Files	Lines
2016-02-11	Rename tox env to pep8	Ben Nemec	1	-1/+1
2016-01-20	Rename validate tox env to linters	Ben Nemec	1	-2/+2
2015-09-15	Add YAML sanity check	Ben Nemec	1	-0/+3
2013-10-22	Add release configuration.	Chris Jones	1	-0/+11

/* * SMP support for BPA machines. * * Dave Engebretsen, Peter Bergner, and * Mike Corrigan {engebret|bergner|mikec}@us.ibm.com * * Plus various changes from other IBM teams... * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #undef DEBUG #include <linux/kernel.h> #include <linux/sched.h> #include <linux/smp.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/spinlock.h> #include <linux/cache.h> #include <linux/err.h> #include <linux/device.h> #include <linux/cpu.h> #include <asm/ptrace.h> #include <linux/atomic.h> #include <asm/irq.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/io.h> #include <asm/prom.h> #include <asm/smp.h> #include <asm/paca.h> #include <asm/machdep.h> #include <asm/cputable.h> #include <asm/firmware.h> #include <asm/rtas.h> #include <asm/cputhreads.h> #include <asm/code-patching.h> #include "interrupt.h" #include <asm/udbg.h> #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) #else #define DBG(fmt...) #endif /* * The Primary thread of each non-boot processor was started from the OF client * interface by prom_hold_cpus and is spinning on secondary_hold_spinloop. */ static cpumask_t of_spin_map; /** * smp_startup_cpu() - start the given cpu * * At boot time, there is nothing to do for primary threads which were * started from Open Firmware. For anything else, call RTAS with the * appropriate start location. * * Returns: * 0 - failure * 1 - success */ static inline int smp_startup_cpu(unsigned int lcpu) { int status; unsigned long start_here = __pa(ppc_function_entry(generic_secondary_smp_init)); unsigned int pcpu; int start_cpu; if (cpumask_test_cpu(lcpu, &of_spin_map)) /* Already started by OF and sitting in spin loop */ return 1; pcpu = get_hard_smp_processor_id(lcpu); /* Fixup atomic count: it exited inside IRQ handler. */ task_thread_info(paca[lcpu].__current)->preempt_count = 0; /* * If the RTAS start-cpu token does not exist then presume the * cpu is already spinning. */ start_cpu = rtas_token("start-cpu"); if (start_cpu == RTAS_UNKNOWN_SERVICE) return 1; status = rtas_call(start_cpu, 3, 1, NULL, pcpu, start_here, lcpu); if (status != 0) { printk(KERN_ERR "start-cpu failed: %i\n", status); return 0; } return 1; } static void smp_cell_setup_cpu(int cpu) { if (cpu != boot_cpuid) iic_setup_cpu(); /* * change default DABRX to allow user watchpoints */ mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER); } static int smp_cell_kick_cpu(int nr) { BUG_ON(nr < 0 || nr >= NR_CPUS); if (!smp_startup_cpu(nr)) return -ENOENT; /* * The processor is currently spinning, waiting for the * cpu_start field to become non-zero After we set cpu_start, * the processor will continue on to secondary_start */ paca[nr].cpu_start = 1; return 0; } static struct smp_ops_t bpa_iic_smp_ops = { .message_pass = iic_message_pass, .probe = iic_request_IPIs, .kick_cpu = smp_cell_kick_cpu, .setup_cpu = smp_cell_setup_cpu, .cpu_bootable = smp_generic_cpu_bootable, }; /* This is called very early */ void __init smp_init_cell(void) { int i; DBG(" -> smp_init_cell()\n"); smp_ops = &bpa_iic_smp_ops; /* Mark threads which are still spinning in hold loops. */ if (cpu_has_feature(CPU_FTR_SMT)) { for_each_present_cpu(i) { if (cpu_thread_in_core(i) == 0) cpumask_set_cpu(i, &of_spin_map); } } else cpumask_copy(&of_spin_map, cpu_present_mask); cpumask_clear_cpu(boot_cpuid, &of_spin_map); /* Non-lpar has additional take/give timebase */ if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) { smp_ops->give_timebase = rtas_give_timebase; smp_ops->take_timebase = rtas_take_timebase; } DBG(" <- smp_init_cell()\n"); }