diff options
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/Kconfig | 6 | ||||
-rw-r--r-- | arch/powerpc/kernel/idle.c | 8 | ||||
-rw-r--r-- | arch/powerpc/kernel/irq.c | 3 | ||||
-rw-r--r-- | arch/powerpc/kernel/misc_32.S | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/misc_64.S | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/smp.c | 4 | ||||
-rw-r--r-- | arch/powerpc/kernel/udbg.c | 6 | ||||
-rw-r--r-- | arch/powerpc/mm/fault.c | 2 | ||||
-rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_cds.c | 2 | ||||
-rw-r--r-- | arch/powerpc/platforms/iseries/setup.c | 8 | ||||
-rw-r--r-- | arch/powerpc/platforms/powermac/smp.c | 4 | ||||
-rw-r--r-- | arch/powerpc/platforms/wsp/opb_pic.c | 3 | ||||
-rw-r--r-- | arch/powerpc/sysdev/xics/xics-common.c | 5 |
13 files changed, 29 insertions, 26 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 951e18f5335b..d01baf829664 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -69,10 +69,11 @@ config LOCKDEP_SUPPORT config RWSEM_GENERIC_SPINLOCK bool + default y if PREEMPT_RT_FULL config RWSEM_XCHGADD_ALGORITHM bool - default y + default y if !PREEMPT_RT_FULL config GENERIC_LOCKBREAK bool @@ -132,6 +133,7 @@ config PPC select IRQ_PER_CPU select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL + select IRQ_FORCED_THREADING select HAVE_RCU_TABLE_FREE if SMP select HAVE_SYSCALL_TRACEPOINTS select HAVE_BPF_JIT if (PPC64 && NET) @@ -274,7 +276,7 @@ menu "Kernel options" config HIGHMEM bool "High memory support" - depends on PPC32 + depends on PPC32 && !PREEMPT_RT_FULL source kernel/time/Kconfig source kernel/Kconfig.hz diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c index 39a2baa6ad58..5d70d1046e11 100644 --- a/arch/powerpc/kernel/idle.c +++ b/arch/powerpc/kernel/idle.c @@ -94,11 +94,11 @@ void cpu_idle(void) HMT_medium(); ppc64_runlatch_on(); tick_nohz_restart_sched_tick(); - preempt_enable_no_resched(); - if (cpu_should_die()) + if (cpu_should_die()) { + __preempt_enable_no_resched(); cpu_die(); - schedule(); - preempt_disable(); + } + schedule_preempt_disabled(); } } diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 745c1e7c10fd..e0ee53177ea5 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -440,6 +440,7 @@ void irq_ctx_init(void) } } +#ifndef CONFIG_PREEMPT_RT_FULL static inline void do_softirq_onstack(void) { struct thread_info *curtp, *irqtp; @@ -476,7 +477,7 @@ void do_softirq(void) local_irq_restore(flags); } - +#endif /* * IRQ controller and virtual interrupts diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 7cd07b42ca1a..46c607300b29 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -36,6 +36,7 @@ .text +#ifndef CONFIG_PREEMPT_RT_FULL _GLOBAL(call_do_softirq) mflr r0 stw r0,4(r1) @@ -46,6 +47,7 @@ _GLOBAL(call_do_softirq) lwz r0,4(r1) mtlr r0 blr +#endif _GLOBAL(call_handle_irq) mflr r0 diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index 616921ef1439..2961d7521726 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -29,6 +29,7 @@ .text +#ifndef CONFIG_PREEMPT_RT_FULL _GLOBAL(call_do_softirq) mflr r0 std r0,16(r1) @@ -39,6 +40,7 @@ _GLOBAL(call_do_softirq) ld r0,16(r1) mtlr r0 blr +#endif _GLOBAL(call_handle_irq) ld r8,0(r6) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 6df70907d60a..abdedd3a314d 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -187,8 +187,8 @@ int smp_request_message_ipi(int virq, int msg) return 1; } #endif - err = request_irq(virq, smp_ipi_action[msg], IRQF_PERCPU, - smp_ipi_name[msg], 0); + err = request_irq(virq, smp_ipi_action[msg], + IRQF_PERCPU | IRQF_NO_THREAD, smp_ipi_name[msg], 0); WARN(err < 0, "unable to request_irq %d for %s (rc %d)\n", virq, smp_ipi_name[msg], err); diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c index 57fa2c0a531c..1b9174d96dcc 100644 --- a/arch/powerpc/kernel/udbg.c +++ b/arch/powerpc/kernel/udbg.c @@ -182,15 +182,13 @@ static struct console udbg_console = { .index = 0, }; -static int early_console_initialized; - /* * Called by setup_system after ppc_md->probe and ppc_md->early_init. * Call it again after setting udbg_putc in ppc_md->setup_arch. */ void __init register_early_udbg_console(void) { - if (early_console_initialized) + if (early_console) return; if (!udbg_putc) @@ -200,7 +198,7 @@ void __init register_early_udbg_console(void) printk(KERN_INFO "early console immortal !\n"); udbg_console.flags &= ~CON_BOOT; } - early_console_initialized = 1; + early_console = &udbg_console; register_console(&udbg_console); } diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 5efe8c96d37f..94bedd4032aa 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -162,7 +162,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address, } #endif - if (in_atomic() || mm == NULL) { + if (!mm || pagefault_disabled()) { if (!user_mode(regs)) return SIGSEGV; /* in_atomic() in user mode is really bad, diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c index 66cb8d64079f..7e2a4d231e74 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c @@ -177,7 +177,7 @@ static irqreturn_t mpc85xx_8259_cascade_action(int irq, void *dev_id) static struct irqaction mpc85xxcds_8259_irqaction = { .handler = mpc85xx_8259_cascade_action, - .flags = IRQF_SHARED, + .flags = IRQF_SHARED | IRQF_NO_THREAD, .name = "8259 cascade", }; #endif /* PPC_I8259 */ diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index ea0acbd8966d..e0c5b4953c2f 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -582,9 +582,7 @@ static void iseries_shared_idle(void) if (hvlpevent_is_pending()) process_iSeries_events(); - preempt_enable_no_resched(); - schedule(); - preempt_disable(); + schedule_preempt_disabled(); } } @@ -611,9 +609,7 @@ static void iseries_dedicated_idle(void) ppc64_runlatch_on(); tick_nohz_restart_sched_tick(); - preempt_enable_no_resched(); - schedule(); - preempt_disable(); + schedule_preempt_disabled(); } } diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c index 9b6a820bdd7d..71002f34d012 100644 --- a/arch/powerpc/platforms/powermac/smp.c +++ b/arch/powerpc/platforms/powermac/smp.c @@ -200,7 +200,7 @@ static int psurge_secondary_ipi_init(void) if (psurge_secondary_virq) rc = request_irq(psurge_secondary_virq, psurge_ipi_intr, - IRQF_PERCPU, "IPI", NULL); + IRQF_NO_THREAD | IRQF_PERCPU, "IPI", NULL); if (rc) pr_err("Failed to setup secondary cpu IPI\n"); @@ -408,7 +408,7 @@ static int __init smp_psurge_kick_cpu(int nr) static struct irqaction psurge_irqaction = { .handler = psurge_ipi_intr, - .flags = IRQF_PERCPU, + .flags = IRQF_PERCPU | IRQF_NO_THREAD, .name = "primary IPI", }; diff --git a/arch/powerpc/platforms/wsp/opb_pic.c b/arch/powerpc/platforms/wsp/opb_pic.c index be05631a3c1c..19f353dfcd03 100644 --- a/arch/powerpc/platforms/wsp/opb_pic.c +++ b/arch/powerpc/platforms/wsp/opb_pic.c @@ -320,7 +320,8 @@ void __init opb_pic_init(void) } /* Attach opb interrupt handler to new virtual IRQ */ - rc = request_irq(virq, opb_irq_handler, 0, "OPB LS Cascade", opb); + rc = request_irq(virq, opb_irq_handler, IRQF_NO_THREAD, + "OPB LS Cascade", opb); if (rc) { printk("opb: request_irq failed: %d\n", rc); continue; diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c index 63762c672a03..4ba61941acbe 100644 --- a/arch/powerpc/sysdev/xics/xics-common.c +++ b/arch/powerpc/sysdev/xics/xics-common.c @@ -134,10 +134,11 @@ static void xics_request_ipi(void) BUG_ON(ipi == NO_IRQ); /* - * IPIs are marked IRQF_PERCPU. The handler was set in map. + * IPIs are marked PERCPU and also IRQF_NO_THREAD as they must + * run in hard interrupt context. The handler was set in map. */ BUG_ON(request_irq(ipi, icp_ops->ipi_action, - IRQF_PERCPU, "IPI", NULL)); + IRQF_NO_THREAD|IRQF_PERCPU, "IPI", NULL)); } int __init xics_smp_probe(void) |