diff options
Diffstat (limited to 'arch/powerpc/kernel')
27 files changed, 119 insertions, 168 deletions
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c index a5b632e52fa..3839839f83c 100644 --- a/arch/powerpc/kernel/align.c +++ b/arch/powerpc/kernel/align.c @@ -732,7 +732,7 @@ int fix_alignment(struct pt_regs *regs) #ifdef CONFIG_SPE if ((instr >> 26) == 0x4) { - PPC_WARN_EMULATED(spe); + PPC_WARN_ALIGNMENT(spe, regs); return emulate_spe(regs, reg, instr); } #endif @@ -786,7 +786,7 @@ int fix_alignment(struct pt_regs *regs) flags |= SPLT; nb = 8; } - PPC_WARN_EMULATED(vsx); + PPC_WARN_ALIGNMENT(vsx, regs); return emulate_vsx(addr, reg, areg, regs, flags, nb); } #endif @@ -794,7 +794,7 @@ int fix_alignment(struct pt_regs *regs) * the exception of DCBZ which is handled as a special case here */ if (instr == DCBZ) { - PPC_WARN_EMULATED(dcbz); + PPC_WARN_ALIGNMENT(dcbz, regs); return emulate_dcbz(regs, addr); } if (unlikely(nb == 0)) @@ -804,7 +804,7 @@ int fix_alignment(struct pt_regs *regs) * function */ if (flags & M) { - PPC_WARN_EMULATED(multiple); + PPC_WARN_ALIGNMENT(multiple, regs); return emulate_multiple(regs, addr, reg, nb, flags, instr, swiz); } @@ -825,11 +825,11 @@ int fix_alignment(struct pt_regs *regs) /* Special case for 16-byte FP loads and stores */ if (nb == 16) { - PPC_WARN_EMULATED(fp_pair); + PPC_WARN_ALIGNMENT(fp_pair, regs); return emulate_fp_pair(addr, reg, flags); } - PPC_WARN_EMULATED(unaligned); + PPC_WARN_ALIGNMENT(unaligned, regs); /* If we are loading, get the data from user space, else * get it from register values diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 0b9c9135922..03c862b6a9c 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -711,6 +711,8 @@ static struct cpu_spec __initdata cpu_specs[] = { .cpu_setup = __setup_cpu_750, .machine_check = machine_check_generic, .platform = "ppc750", + .oprofile_cpu_type = "ppc/750", + .oprofile_type = PPC_OPROFILE_G4, }, { /* 745/755 */ .pvr_mask = 0xfffff000, diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 900e0eea009..bdcb557d470 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -551,7 +551,7 @@ restore: BEGIN_FW_FTR_SECTION ld r5,SOFTE(r1) FW_FTR_SECTION_ELSE - b iseries_check_pending_irqs + b .Liseries_check_pending_irqs ALT_FW_FTR_SECTION_END_IFCLR(FW_FEATURE_ISERIES) 2: TRACE_AND_RESTORE_IRQ(r5); @@ -623,7 +623,7 @@ ALT_FW_FTR_SECTION_END_IFCLR(FW_FEATURE_ISERIES) #endif /* CONFIG_PPC_BOOK3E */ -iseries_check_pending_irqs: +.Liseries_check_pending_irqs: #ifdef CONFIG_PPC_ISERIES ld r5,SOFTE(r1) cmpdi 0,r5,0 @@ -658,42 +658,43 @@ do_work: cmpdi r0,0 crandc eq,cr1*4+eq,eq bne restore - /* here we are preempting the current task */ -1: -#ifdef CONFIG_TRACE_IRQFLAGS - bl .trace_hardirqs_on - /* Note: we just clobbered r10 which used to contain the previous - * MSR before the hard-disabling done by the caller of do_work. - * We don't have that value anymore, but it doesn't matter as - * we will hard-enable unconditionally, we can just reload the - * current MSR into r10 + + /* Here we are preempting the current task. + * + * Ensure interrupts are soft-disabled. We also properly mark + * the PACA to reflect the fact that they are hard-disabled + * and trace the change */ - mfmsr r10 -#endif /* CONFIG_TRACE_IRQFLAGS */ - li r0,1 + li r0,0 stb r0,PACASOFTIRQEN(r13) stb r0,PACAHARDIRQEN(r13) + TRACE_DISABLE_INTS + + /* Call the scheduler with soft IRQs off */ +1: bl .preempt_schedule_irq + + /* Hard-disable interrupts again (and update PACA) */ #ifdef CONFIG_PPC_BOOK3E - wrteei 1 - bl .preempt_schedule wrteei 0 #else - ori r10,r10,MSR_EE - mtmsrd r10,1 /* reenable interrupts */ - bl .preempt_schedule mfmsr r10 - clrrdi r9,r1,THREAD_SHIFT - rldicl r10,r10,48,1 /* disable interrupts again */ + rldicl r10,r10,48,1 rotldi r10,r10,16 mtmsrd r10,1 #endif /* CONFIG_PPC_BOOK3E */ + li r0,0 + stb r0,PACAHARDIRQEN(r13) + + /* Re-test flags and eventually loop */ + clrrdi r9,r1,THREAD_SHIFT ld r4,TI_FLAGS(r9) andi. r0,r4,_TIF_NEED_RESCHED bne 1b b restore user_work: -#endif +#endif /* CONFIG_PREEMPT */ + /* Enable interrupts */ #ifdef CONFIG_PPC_BOOK3E wrteei 1 @@ -1038,8 +1039,7 @@ _GLOBAL(mod_return_to_handler) * We are in a module using the module's TOC. * Switch to our TOC to run inside the core kernel. */ - LOAD_REG_IMMEDIATE(r4,ftrace_return_to_handler) - ld r2, 8(r4) + ld r2, PACATOC(r13) bl .ftrace_return_to_handler nop diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 1808876edcc..c7eb4e0eb86 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -185,12 +185,15 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) * prolog code of the PerformanceMonitor one. A little * trickery is thus necessary */ +performance_monitor_pSeries_1: . = 0xf00 b performance_monitor_pSeries +altivec_unavailable_pSeries_1: . = 0xf20 b altivec_unavailable_pSeries +vsx_unavailable_pSeries_1: . = 0xf40 b vsx_unavailable_pSeries diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c index 88d9c1d5e5f..049dda60e47 100644 --- a/arch/powerpc/kernel/idle.c +++ b/arch/powerpc/kernel/idle.c @@ -110,18 +110,16 @@ int powersave_nap; */ static ctl_table powersave_nap_ctl_table[]={ { - .ctl_name = KERN_PPC_POWERSAVE_NAP, .procname = "powersave-nap", .data = &powersave_nap, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = &proc_dointvec, + .proc_handler = proc_dointvec, }, {} }; static ctl_table powersave_nap_sysctl_root[] = { { - .ctl_name = CTL_KERN, .procname = "kernel", .mode = 0555, .child = powersave_nap_ctl_table, diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index e5d12117798..02a334662cc 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -70,6 +70,8 @@ #include <asm/firmware.h> #include <asm/lv1call.h> #endif +#define CREATE_TRACE_POINTS +#include <asm/trace.h> int __irq_offset_value; static int ppc_spurious_interrupts; @@ -325,6 +327,8 @@ void do_IRQ(struct pt_regs *regs) struct pt_regs *old_regs = set_irq_regs(regs); unsigned int irq; + trace_irq_entry(regs); + irq_enter(); check_stack_overflow(); @@ -348,6 +352,8 @@ void do_IRQ(struct pt_regs *regs) timer_interrupt(regs); } #endif + + trace_irq_exit(regs); } void __init init_IRQ(void) diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c index fe8f71dd0b3..b6bd1eaa1c2 100644 --- a/arch/powerpc/kernel/kgdb.c +++ b/arch/powerpc/kernel/kgdb.c @@ -52,7 +52,7 @@ static struct hard_trap_info { 0x2030, 0x08 /* SIGFPE */ }, /* spe fp data */ { 0x2040, 0x08 /* SIGFPE */ }, /* spe fp data */ { 0x2050, 0x08 /* SIGFPE */ }, /* spe fp round */ - { 0x2060, 0x0e /* SIGILL */ }, /* performace monitor */ + { 0x2060, 0x0e /* SIGILL */ }, /* performance monitor */ { 0x2900, 0x08 /* SIGFPE */ }, /* apu unavailable */ { 0x3100, 0x0e /* SIGALRM */ }, /* fixed interval timer */ { 0x3200, 0x02 /* SIGINT */ }, /* watchdog */ @@ -282,12 +282,6 @@ void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs) { unsigned long *ptr = gdb_regs; int reg; -#ifdef CONFIG_SPE - union { - u32 v32[2]; - u64 v64; - } acc; -#endif for (reg = 0; reg < 32; reg++) UNPACK64(regs->gpr[reg], ptr); diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index bb8209e3493..e8dfdbd9327 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1190,7 +1190,7 @@ EXPORT_SYMBOL(pcibios_align_resource); * Reparent resource children of pr that conflict with res * under res, and make res replace those children. */ -static int __init reparent_resources(struct resource *parent, +static int reparent_resources(struct resource *parent, struct resource *res) { struct resource *p, **pp; diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index ba949a2c93a..ccf56ac92de 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -97,7 +97,9 @@ int pcibios_unmap_io_space(struct pci_bus *bus) * to do an appropriate TLB flush here too */ if (bus->self) { +#ifdef CONFIG_PPC_STD_MMU_64 struct resource *res = bus->resource[0]; +#endif pr_debug("IO unmapping for PCI-PCI bridge %s\n", pci_name(bus->self)); diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c index bbcbae183e9..1eb85fbf53a 100644 --- a/arch/powerpc/kernel/perf_event.c +++ b/arch/powerpc/kernel/perf_event.c @@ -116,20 +116,23 @@ static inline void perf_get_data_addr(struct pt_regs *regs, u64 *addrp) static inline u32 perf_get_misc_flags(struct pt_regs *regs) { unsigned long mmcra = regs->dsisr; + unsigned long sihv = MMCRA_SIHV; + unsigned long sipr = MMCRA_SIPR; if (TRAP(regs) != 0xf00) return 0; /* not a PMU interrupt */ if (ppmu->flags & PPMU_ALT_SIPR) { - if (mmcra & POWER6_MMCRA_SIHV) - return PERF_RECORD_MISC_HYPERVISOR; - return (mmcra & POWER6_MMCRA_SIPR) ? - PERF_RECORD_MISC_USER : PERF_RECORD_MISC_KERNEL; + sihv = POWER6_MMCRA_SIHV; + sipr = POWER6_MMCRA_SIPR; } - if (mmcra & MMCRA_SIHV) + + /* PR has priority over HV, so order below is important */ + if (mmcra & sipr) + return PERF_RECORD_MISC_USER; + if ((mmcra & sihv) && (freeze_events_kernel != MMCR0_FCHV)) return PERF_RECORD_MISC_HYPERVISOR; - return (mmcra & MMCRA_SIPR) ? PERF_RECORD_MISC_USER : - PERF_RECORD_MISC_KERNEL; + return PERF_RECORD_MISC_KERNEL; } /* @@ -1162,7 +1165,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val, */ if (record) { struct perf_sample_data data = { - .addr = 0, + .addr = ~0ULL, .period = event->hw.last_period, }; diff --git a/arch/powerpc/kernel/power5+-pmu.c b/arch/powerpc/kernel/power5+-pmu.c index 0f4c1c73a6a..199de527d41 100644 --- a/arch/powerpc/kernel/power5+-pmu.c +++ b/arch/powerpc/kernel/power5+-pmu.c @@ -73,10 +73,6 @@ #define MMCR1_PMCSEL_MSK 0x7f /* - * Bits in MMCRA - */ - -/* * Layout of constraint bits: * 6666555555555544444444443333333333222222222211111111110000000000 * 3210987654321098765432109876543210987654321098765432109876543210 diff --git a/arch/powerpc/kernel/power5-pmu.c b/arch/powerpc/kernel/power5-pmu.c index c351b3a57fb..98b6a729a9d 100644 --- a/arch/powerpc/kernel/power5-pmu.c +++ b/arch/powerpc/kernel/power5-pmu.c @@ -73,10 +73,6 @@ #define MMCR1_PMCSEL_MSK 0x7f /* - * Bits in MMCRA - */ - -/* * Layout of constraint bits: * 6666555555555544444444443333333333222222222211111111110000000000 * 3210987654321098765432109876543210987654321098765432109876543210 @@ -390,7 +386,7 @@ static int power5_compute_mmcr(u64 event[], int n_ev, unsigned int hwc[], unsigned long mmcr[]) { unsigned long mmcr1 = 0; - unsigned long mmcra = 0; + unsigned long mmcra = MMCRA_SDAR_DCACHE_MISS | MMCRA_SDAR_ERAT_MISS; unsigned int pmc, unit, byte, psel; unsigned int ttm, grp; int i, isbus, bit, grsel; diff --git a/arch/powerpc/kernel/power6-pmu.c b/arch/powerpc/kernel/power6-pmu.c index ca399ba5034..84a607bda8f 100644 --- a/arch/powerpc/kernel/power6-pmu.c +++ b/arch/powerpc/kernel/power6-pmu.c @@ -178,7 +178,7 @@ static int p6_compute_mmcr(u64 event[], int n_ev, unsigned int hwc[], unsigned long mmcr[]) { unsigned long mmcr1 = 0; - unsigned long mmcra = 0; + unsigned long mmcra = MMCRA_SDAR_DCACHE_MISS | MMCRA_SDAR_ERAT_MISS; int i; unsigned int pmc, ev, b, u, s, psel; unsigned int ttmset = 0; diff --git a/arch/powerpc/kernel/power7-pmu.c b/arch/powerpc/kernel/power7-pmu.c index 28a4daacdc0..852f7b7f6b4 100644 --- a/arch/powerpc/kernel/power7-pmu.c +++ b/arch/powerpc/kernel/power7-pmu.c @@ -51,10 +51,6 @@ #define MMCR1_PMCSEL_MSK 0xff /* - * Bits in MMCRA - */ - -/* * Layout of constraint bits: * 6666555555555544444444443333333333222222222211111111110000000000 * 3210987654321098765432109876543210987654321098765432109876543210 @@ -230,7 +226,7 @@ static int power7_compute_mmcr(u64 event[], int n_ev, unsigned int hwc[], unsigned long mmcr[]) { unsigned long mmcr1 = 0; - unsigned long mmcra = 0; + unsigned long mmcra = MMCRA_SDAR_DCACHE_MISS | MMCRA_SDAR_ERAT_MISS; unsigned int pmc, unit, combine, l2sel, psel; unsigned int pmc_inuse = 0; int i; diff --git a/arch/powerpc/kernel/ppc970-pmu.c b/arch/powerpc/kernel/ppc970-pmu.c index 479574413a9..8eff48e20db 100644 --- a/arch/powerpc/kernel/ppc970-pmu.c +++ b/arch/powerpc/kernel/ppc970-pmu.c @@ -84,10 +84,6 @@ static short mmcr1_adder_bits[8] = { }; /* - * Bits in MMCRA - */ - -/* * Layout of constraint bits: * 6666555555555544444444443333333333222222222211111111110000000000 * 3210987654321098765432109876543210987654321098765432109876543210 diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 1168c5f440a..c930ac38e59 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1016,9 +1016,13 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) #ifdef CONFIG_FUNCTION_GRAPH_TRACER int curr_frame = current->curr_ret_stack; extern void return_to_handler(void); - unsigned long addr = (unsigned long)return_to_handler; + unsigned long rth = (unsigned long)return_to_handler; + unsigned long mrth = -1; #ifdef CONFIG_PPC64 - addr = *(unsigned long*)addr; + extern void mod_return_to_handler(void); + rth = *(unsigned long *)rth; + mrth = (unsigned long)mod_return_to_handler; + mrth = *(unsigned long *)mrth; #endif #endif @@ -1044,7 +1048,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) if (!firstframe || ip != lr) { printk("["REG"] ["REG"] %pS", sp, ip, (void *)ip); #ifdef CONFIG_FUNCTION_GRAPH_TRACER - if (ip == addr && curr_frame >= 0) { + if ((ip == rth || ip == mrth) && curr_frame >= 0) { printk(" (%pS)", (void *)current->ret_stack[curr_frame].ret); curr_frame--; @@ -1168,7 +1172,7 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) unsigned long base = mm->brk; unsigned long ret; -#ifdef CONFIG_PPC64 +#ifdef CONFIG_PPC_STD_MMU_64 /* * If we are using 1TB segments and we are allowed to randomise * the heap, we can put it above 1TB so it is backed by a 1TB diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index d4405b95bfa..4ec30086246 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -1317,29 +1317,6 @@ struct device_node *of_find_next_cache_node(struct device_node *np) } /** - * of_find_all_nodes - Get next node in global list - * @prev: Previous node or NULL to start iteration - * of_node_put() will be called on it - * - * Returns a node pointer with refcount incremented, use - * of_node_put() on it when done. - */ -struct device_node *of_find_all_nodes(struct device_node *prev) -{ - struct device_node *np; - - read_lock(&devtree_lock); - np = prev ? prev->allnext : allnodes; - for (; np != 0; np = np->allnext) - if (of_node_get(np)) - break; - of_node_put(prev); - read_unlock(&devtree_lock); - return np; -} -EXPORT_SYMBOL(of_find_all_nodes); - -/** * of_node_get - Increment refcount of a node * @node: Node to inc refcount, NULL is supported to * simplify writing of callers diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 4271f7a655a..845c72ab735 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -660,6 +660,7 @@ late_initcall(check_cache_coherency); #ifdef CONFIG_DEBUG_FS struct dentry *powerpc_debugfs_root; +EXPORT_SYMBOL(powerpc_debugfs_root); static int powerpc_debugfs_init(void) { diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 53bcf3d792d..b152de3e64d 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -345,7 +345,7 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_SWIOTLB if (ppc_swiotlb_enable) - swiotlb_init(); + swiotlb_init(1); #endif paging_init(); diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 797ea95aae2..df2c9e932b3 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -57,7 +57,6 @@ #include <asm/cache.h> #include <asm/page.h> #include <asm/mmu.h> -#include <asm/mmu-hash64.h> #include <asm/firmware.h> #include <asm/xmon.h> #include <asm/udbg.h> @@ -551,7 +550,7 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_SWIOTLB if (ppc_swiotlb_enable) - swiotlb_init(); + swiotlb_init(1); #endif paging_init(); diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c index b97c2d67f4a..c5a4732bcc4 100644 --- a/arch/powerpc/kernel/sys_ppc32.c +++ b/arch/powerpc/kernel/sys_ppc32.c @@ -520,58 +520,6 @@ asmlinkage long compat_sys_umask(u32 mask) return sys_umask((int)mask); } -#ifdef CONFIG_SYSCTL_SYSCALL -struct __sysctl_args32 { - u32 name; - int nlen; - u32 oldval; - u32 oldlenp; - u32 newval; - u32 newlen; - u32 __unused[4]; -}; - -asmlinkage long compat_sys_sysctl(struct __sysctl_args32 __user *args) -{ - struct __sysctl_args32 tmp; - int error; - size_t oldlen; - size_t __user *oldlenp = NULL; - unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; - - if (copy_from_user(&tmp, args, sizeof(tmp))) - return -EFAULT; - - if (tmp.oldval && tmp.oldlenp) { - /* Duh, this is ugly and might not work if sysctl_args - is in read-only memory, but do_sysctl does indirectly - a lot of uaccess in both directions and we'd have to - basically copy the whole sysctl.c here, and - glibc's __sysctl uses rw memory for the structure - anyway. */ - oldlenp = (size_t __user *)addr; - if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) || - put_user(oldlen, oldlenp)) - return -EFAULT; - } - - lock_kernel(); - error = do_sysctl(compat_ptr(tmp.name), tmp.nlen, - compat_ptr(tmp.oldval), oldlenp, - compat_ptr(tmp.newval), tmp.newlen); - unlock_kernel(); - if (oldlenp) { - if (!error) { - if (get_user(oldlen, oldlenp) || - put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp))) - error = -EFAULT; - } - copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); - } - return error; -} -#endif - unsigned long compat_sys_mmap2(unsigned long addr, size_t len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff) diff --git a/arch/powerpc/kernel/tau_6xx.c b/arch/powerpc/kernel/tau_6xx.c index c3a56d65c5a..a753b72efbc 100644 --- a/arch/powerpc/kernel/tau_6xx.c +++ b/arch/powerpc/kernel/tau_6xx.c @@ -59,7 +59,7 @@ void set_thresholds(unsigned long cpu) mtspr(SPRN_THRM1, THRM1_THRES(tau[cpu].low) | THRM1_V | THRM1_TIE | THRM1_TID); /* setup THRM2, - * threshold, valid bit, enable interrupts, interrupt when above threshhold + * threshold, valid bit, enable interrupts, interrupt when above threshold */ mtspr (SPRN_THRM2, THRM1_THRES(tau[cpu].high) | THRM1_V | THRM1_TIE); #else diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 92dc844299b..674800b242d 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -54,6 +54,7 @@ #include <linux/irq.h> #include <linux/delay.h> #include <linux/perf_event.h> +#include <asm/trace.h> #include <asm/io.h> #include <asm/processor.h> @@ -571,6 +572,8 @@ void timer_interrupt(struct pt_regs * regs) struct clock_event_device *evt = &decrementer->event; u64 now; + trace_timer_interrupt_entry(regs); + /* Ensure a positive value is written to the decrementer, or else * some CPUs will continuue to take decrementer exceptions */ set_dec(DECREMENTER_MAX); @@ -590,6 +593,7 @@ void timer_interrupt(struct pt_regs * regs) now = decrementer->next_tb - now; if (now <= DECREMENTER_MAX) set_dec((int)now); + trace_timer_interrupt_exit(regs); return; } old_regs = set_irq_regs(regs); @@ -620,6 +624,8 @@ void timer_interrupt(struct pt_regs * regs) irq_exit(); set_irq_regs(old_regs); + + trace_timer_interrupt_exit(regs); } void wakeup_decrementer(void) @@ -777,7 +783,7 @@ int update_persistent_clock(struct timespec now) return ppc_md.set_rtc_time(&tm); } -void read_persistent_clock(struct timespec *ts) +static void __read_persistent_clock(struct timespec *ts) { struct rtc_time tm; static int first = 1; @@ -800,10 +806,23 @@ void read_persistent_clock(struct timespec *ts) return; } ppc_md.get_rtc_time(&tm); + ts->tv_sec = mktime(tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); } +void read_persistent_clock(struct timespec *ts) +{ + __read_persistent_clock(ts); + + /* Sanitize it in case real time clock is set below EPOCH */ + if (ts->tv_sec < 0) { + ts->tv_sec = 0; + ts->tv_nsec = 0; + } + +} + /* clocksource code */ static cycle_t rtc_read(struct clocksource *cs) { @@ -815,7 +834,8 @@ static cycle_t timebase_read(struct clocksource *cs) return (cycle_t)get_tb(); } -void update_vsyscall(struct timespec *wall_time, struct clocksource *clock) +void update_vsyscall(struct timespec *wall_time, struct clocksource *clock, + u32 mult) { u64 t2x, stamp_xsec; @@ -828,7 +848,7 @@ void update_vsyscall(struct timespec *wall_time, struct clocksource *clock) /* XXX this assumes clock->shift == 22 */ /* 4611686018 ~= 2^(20+64-22) / 1e9 */ - t2x = (u64) clock->mult * 4611686018ULL; + t2x = (u64) mult * 4611686018ULL; stamp_xsec = (u64) xtime.tv_nsec * XSEC_PER_SEC; do_div(stamp_xsec, 1000000000); stamp_xsec += (u64) xtime.tv_sec * XSEC_PER_SEC; @@ -905,7 +925,7 @@ static void register_decrementer_clockevent(int cpu) *dec = decrementer_clockevent; dec->cpumask = cpumask_of(cpu); - printk(KERN_DEBUG "clockevent: %s mult[%lx] shift[%d] cpu[%d]\n", + printk(KERN_DEBUG "clockevent: %s mult[%x] shift[%d] cpu[%d]\n", dec->name, dec->mult, dec->shift, cpu); clockevents_register_device(dec); diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 6f0ae1a9bfa..9d1f9354d6c 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -759,7 +759,7 @@ static int emulate_instruction(struct pt_regs *regs) /* Emulate the mfspr rD, PVR. */ if ((instword & PPC_INST_MFSPR_PVR_MASK) == PPC_INST_MFSPR_PVR) { - PPC_WARN_EMULATED(mfpvr); + PPC_WARN_EMULATED(mfpvr, regs); rd = (instword >> 21) & 0x1f; regs->gpr[rd] = mfspr(SPRN_PVR); return 0; @@ -767,7 +767,7 @@ static int emulate_instruction(struct pt_regs *regs) /* Emulating the dcba insn is just a no-op. */ if ((instword & PPC_INST_DCBA_MASK) == PPC_INST_DCBA) { - PPC_WARN_EMULATED(dcba); + PPC_WARN_EMULATED(dcba, regs); return 0; } @@ -776,7 +776,7 @@ static int emulate_instruction(struct pt_regs *regs) int shift = (instword >> 21) & 0x1c; unsigned long msk = 0xf0000000UL >> shift; - PPC_WARN_EMULATED(mcrxr); + PPC_WARN_EMULATED(mcrxr, regs); regs->ccr = (regs->ccr & ~msk) | ((regs->xer >> shift) & msk); regs->xer &= ~0xf0000000UL; return 0; @@ -784,19 +784,19 @@ static int emulate_instruction(struct pt_regs *regs) /* Emulate load/store string insn. */ if ((instword & PPC_INST_STRING_GEN_MASK) == PPC_INST_STRING) { - PPC_WARN_EMULATED(string); + PPC_WARN_EMULATED(string, regs); return emulate_string_inst(regs, instword); } /* Emulate the popcntb (Population Count Bytes) instruction. */ if ((instword & PPC_INST_POPCNTB_MASK) == PPC_INST_POPCNTB) { - PPC_WARN_EMULATED(popcntb); + PPC_WARN_EMULATED(popcntb, regs); return emulate_popcntb_inst(regs, instword); } /* Emulate isel (Integer Select) instruction */ if ((instword & PPC_INST_ISEL_MASK) == PPC_INST_ISEL) { - PPC_WARN_EMULATED(isel); + PPC_WARN_EMULATED(isel, regs); return emulate_isel(regs, instword); } @@ -995,7 +995,7 @@ void SoftwareEmulation(struct pt_regs *regs) #ifdef CONFIG_MATH_EMULATION errcode = do_mathemu(regs); if (errcode >= 0) - PPC_WARN_EMULATED(math); + PPC_WARN_EMULATED(math, regs); switch (errcode) { case 0: @@ -1018,7 +1018,7 @@ void SoftwareEmulation(struct pt_regs *regs) #elif defined(CONFIG_8XX_MINIMAL_FPEMU) errcode = Soft_emulate_8xx(regs); if (errcode >= 0) - PPC_WARN_EMULATED(8xx); + PPC_WARN_EMULATED(8xx, regs); switch (errcode) { case 0: @@ -1129,7 +1129,7 @@ void altivec_assist_exception(struct pt_regs *regs) flush_altivec_to_thread(current); - PPC_WARN_EMULATED(altivec); + PPC_WARN_EMULATED(altivec, regs); err = emulate_altivec(regs); if (err == 0) { regs->nip += 4; /* skip emulated instruction */ diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index 94e2df3cae0..d84d19224a9 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -50,6 +50,9 @@ /* Max supported size for symbol names */ #define MAX_SYMNAME 64 +/* The alignment of the vDSO */ +#define VDSO_ALIGNMENT (1 << 16) + extern char vdso32_start, vdso32_end; static void *vdso32_kbase = &vdso32_start; static unsigned int vdso32_pages; @@ -231,15 +234,21 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) * pick a base address for the vDSO in process space. We try to put it * at vdso_base which is the "natural" base for it, but we might fail * and end up putting it elsewhere. + * Add enough to the size so that the result can be aligned. */ down_write(&mm->mmap_sem); vdso_base = get_unmapped_area(NULL, vdso_base, - vdso_pages << PAGE_SHIFT, 0, 0); + (vdso_pages << PAGE_SHIFT) + + ((VDSO_ALIGNMENT - 1) & PAGE_MASK), + 0, 0); if (IS_ERR_VALUE(vdso_base)) { rc = vdso_base; goto fail_mmapsem; } + /* Add required alignment. */ + vdso_base = ALIGN(vdso_base, VDSO_ALIGNMENT); + /* * Put vDSO base into mm struct. We need to do this before calling * install_special_mapping or the perf counter mmap tracking code @@ -712,7 +721,7 @@ static int __init vdso_init(void) #ifdef CONFIG_PPC64 /* - * Fill up the "systemcfg" stuff for backward compatiblity + * Fill up the "systemcfg" stuff for backward compatibility */ strcpy((char *)vdso_data->eye_catcher, "SYSTEMCFG:PPC64"); vdso_data->version.major = SYSTEMCFG_MAJOR; diff --git a/arch/powerpc/kernel/vdso32/vdso32.lds.S b/arch/powerpc/kernel/vdso32/vdso32.lds.S index 904ef1360dd..0546bcd49cd 100644 --- a/arch/powerpc/kernel/vdso32/vdso32.lds.S +++ b/arch/powerpc/kernel/vdso32/vdso32.lds.S @@ -25,7 +25,7 @@ SECTIONS . = ALIGN(16); .text : { *(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*) - } + } :text PROVIDE(__etext = .); PROVIDE(_etext = .); PROVIDE(etext = .); @@ -56,7 +56,7 @@ SECTIONS .fixup : { *(.fixup) } .dynamic : { *(.dynamic) } :text :dynamic - .got : { *(.got) } + .got : { *(.got) } :text .plt : { *(.plt) } _end = .; diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index f56429362a1..27735a7ac12 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -236,6 +236,7 @@ SECTIONS READ_MOSTLY_DATA(L1_CACHE_BYTES) } + . = ALIGN(PAGE_SIZE); .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { NOSAVE_DATA } |