diff options
author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-25 15:58:38 -0400 |
---|---|---|
committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-25 15:58:38 -0400 |
commit | ca1841de3a426de8cfac6ca61f0f54e6283d0653 (patch) | |
tree | fc9ca7db1f9ada5301b3684ae75cfe8470071425 /arch | |
parent | c5325bf1df96152c969b44cae2b8131be5621c47 (diff) | |
parent | 8fd62c82872a5a721c9fb0071ca0f7a49c1732e4 (diff) |
Merge commit 'v2.6.38.4' into linaro-2.6.38
Diffstat (limited to 'arch')
-rw-r--r-- | arch/ia64/kernel/mca.c | 3 | ||||
-rw-r--r-- | arch/ia64/sn/pci/tioca_provider.c | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/perf_event.c | 37 | ||||
-rw-r--r-- | arch/powerpc/kernel/time.c | 3 | ||||
-rw-r--r-- | arch/sparc/kernel/entry.S | 2 | ||||
-rw-r--r-- | arch/sparc/kernel/iommu.c | 3 | ||||
-rw-r--r-- | arch/sparc/kernel/ldc.c | 28 | ||||
-rw-r--r-- | arch/sparc/kernel/pci.c | 1 | ||||
-rw-r--r-- | arch/sparc/kernel/pci_common.c | 11 | ||||
-rw-r--r-- | arch/sparc/kernel/pci_fire.c | 2 | ||||
-rw-r--r-- | arch/sparc/kernel/pci_schizo.c | 4 | ||||
-rw-r--r-- | arch/sparc/kernel/pci_sun4v.c | 3 | ||||
-rw-r--r-- | arch/sparc/kernel/pcr.c | 2 | ||||
-rw-r--r-- | arch/sparc/kernel/ptrace_64.c | 3 | ||||
-rw-r--r-- | arch/sparc/kernel/smp_64.c | 11 | ||||
-rw-r--r-- | arch/sparc/kernel/traps_64.c | 3 | ||||
-rw-r--r-- | arch/sparc/kernel/una_asm_64.S | 2 | ||||
-rw-r--r-- | arch/sparc/mm/fault_32.c | 3 | ||||
-rw-r--r-- | arch/x86/include/asm/msr-index.h | 4 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/amd.c | 23 | ||||
-rw-r--r-- | arch/x86/lib/semaphore_32.S | 2 |
21 files changed, 103 insertions, 49 deletions
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index 1753f6a30d5..ff14ab26c50 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -1859,7 +1859,8 @@ ia64_mca_cpu_init(void *cpu_data) data = mca_bootmem(); first_time = 0; } else - data = __get_free_pages(GFP_KERNEL, get_order(sz)); + data = (void *)__get_free_pages(GFP_KERNEL, + get_order(sz)); if (!data) panic("Could not allocate MCA memory for cpu %d\n", cpu); diff --git a/arch/ia64/sn/pci/tioca_provider.c b/arch/ia64/sn/pci/tioca_provider.c index 4d4536e3b6f..9c271be9919 100644 --- a/arch/ia64/sn/pci/tioca_provider.c +++ b/arch/ia64/sn/pci/tioca_provider.c @@ -509,7 +509,7 @@ tioca_dma_unmap(struct pci_dev *pdev, dma_addr_t bus_addr, int dir) * use the GART mapped mode. */ static u64 -tioca_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma_flags) +tioca_dma_map(struct pci_dev *pdev, unsigned long paddr, size_t byte_count, int dma_flags) { u64 mapaddr; diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c index 97e0ae41494..26e56e34691 100644 --- a/arch/powerpc/kernel/perf_event.c +++ b/arch/powerpc/kernel/perf_event.c @@ -398,6 +398,25 @@ static int check_excludes(struct perf_event **ctrs, unsigned int cflags[], return 0; } +static u64 check_and_compute_delta(u64 prev, u64 val) +{ + u64 delta = (val - prev) & 0xfffffffful; + + /* + * POWER7 can roll back counter values, if the new value is smaller + * than the previous value it will cause the delta and the counter to + * have bogus values unless we rolled a counter over. If a coutner is + * rolled back, it will be smaller, but within 256, which is the maximum + * number of events to rollback at once. If we dectect a rollback + * return 0. This can lead to a small lack of precision in the + * counters. + */ + if (prev > val && (prev - val) < 256) + delta = 0; + + return delta; +} + static void power_pmu_read(struct perf_event *event) { s64 val, delta, prev; @@ -416,10 +435,11 @@ static void power_pmu_read(struct perf_event *event) prev = local64_read(&event->hw.prev_count); barrier(); val = read_pmc(event->hw.idx); + delta = check_and_compute_delta(prev, val); + if (!delta) + return; } while (local64_cmpxchg(&event->hw.prev_count, prev, val) != prev); - /* The counters are only 32 bits wide */ - delta = (val - prev) & 0xfffffffful; local64_add(delta, &event->count); local64_sub(delta, &event->hw.period_left); } @@ -449,8 +469,9 @@ static void freeze_limited_counters(struct cpu_hw_events *cpuhw, val = (event->hw.idx == 5) ? pmc5 : pmc6; prev = local64_read(&event->hw.prev_count); event->hw.idx = 0; - delta = (val - prev) & 0xfffffffful; - local64_add(delta, &event->count); + delta = check_and_compute_delta(prev, val); + if (delta) + local64_add(delta, &event->count); } } @@ -458,14 +479,16 @@ static void thaw_limited_counters(struct cpu_hw_events *cpuhw, unsigned long pmc5, unsigned long pmc6) { struct perf_event *event; - u64 val; + u64 val, prev; int i; for (i = 0; i < cpuhw->n_limited; ++i) { event = cpuhw->limited_counter[i]; event->hw.idx = cpuhw->limited_hwidx[i]; val = (event->hw.idx == 5) ? pmc5 : pmc6; - local64_set(&event->hw.prev_count, val); + prev = local64_read(&event->hw.prev_count); + if (check_and_compute_delta(prev, val)) + local64_set(&event->hw.prev_count, val); perf_event_update_userpage(event); } } @@ -1197,7 +1220,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val, /* we don't have to worry about interrupts here */ prev = local64_read(&event->hw.prev_count); - delta = (val - prev) & 0xfffffffful; + delta = check_and_compute_delta(prev, val); local64_add(delta, &event->count); /* diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 59abf59ef6c..34e3715c1a2 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -230,6 +230,9 @@ static u64 scan_dispatch_log(u64 stop_tb) u64 stolen = 0; u64 dtb; + if (!dtl) + return 0; + if (i == vpa->dtl_idx) return 0; while (i < vpa->dtl_idx) { diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index 54210d48dba..df26afc16d1 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -1283,7 +1283,7 @@ linux_syscall_trace: .globl ret_from_fork ret_from_fork: call schedule_tail - mov %g3, %o0 + ld [%g3 + TI_TASK], %o0 b ret_sys_call ld [%sp + STACKFRAME_SZ + PT_I0], %o0 diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index 72509d0e34b..6f01e8c8319 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -333,13 +333,10 @@ static void dma_4u_free_coherent(struct device *dev, size_t size, void *cpu, dma_addr_t dvma) { struct iommu *iommu; - iopte_t *iopte; unsigned long flags, order, npages; npages = IO_PAGE_ALIGN(size) >> IO_PAGE_SHIFT; iommu = dev->archdata.iommu; - iopte = iommu->page_table + - ((dvma - iommu->page_table_map_base) >> IO_PAGE_SHIFT); spin_lock_irqsave(&iommu->lock, flags); diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index df39a0f0d27..732b0bce600 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -790,16 +790,20 @@ static void send_events(struct ldc_channel *lp, unsigned int event_mask) static irqreturn_t ldc_rx(int irq, void *dev_id) { struct ldc_channel *lp = dev_id; - unsigned long orig_state, hv_err, flags; + unsigned long orig_state, flags; unsigned int event_mask; spin_lock_irqsave(&lp->lock, flags); orig_state = lp->chan_state; - hv_err = sun4v_ldc_rx_get_state(lp->id, - &lp->rx_head, - &lp->rx_tail, - &lp->chan_state); + + /* We should probably check for hypervisor errors here and + * reset the LDC channel if we get one. + */ + sun4v_ldc_rx_get_state(lp->id, + &lp->rx_head, + &lp->rx_tail, + &lp->chan_state); ldcdbg(RX, "RX state[0x%02lx:0x%02lx] head[0x%04lx] tail[0x%04lx]\n", orig_state, lp->chan_state, lp->rx_head, lp->rx_tail); @@ -904,16 +908,20 @@ out: static irqreturn_t ldc_tx(int irq, void *dev_id) { struct ldc_channel *lp = dev_id; - unsigned long flags, hv_err, orig_state; + unsigned long flags, orig_state; unsigned int event_mask = 0; spin_lock_irqsave(&lp->lock, flags); orig_state = lp->chan_state; - hv_err = sun4v_ldc_tx_get_state(lp->id, - &lp->tx_head, - &lp->tx_tail, - &lp->chan_state); + + /* We should probably check for hypervisor errors here and + * reset the LDC channel if we get one. + */ + sun4v_ldc_tx_get_state(lp->id, + &lp->tx_head, + &lp->tx_tail, + &lp->chan_state); ldcdbg(TX, " TX state[0x%02lx:0x%02lx] head[0x%04lx] tail[0x%04lx]\n", orig_state, lp->chan_state, lp->tx_head, lp->tx_tail); diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index 4137579d9ad..f255382b02b 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -675,6 +675,7 @@ static void __devinit pci_bus_register_of_sysfs(struct pci_bus *bus) * humanoid. */ err = sysfs_create_file(&dev->dev.kobj, &dev_attr_obppath.attr); + (void) err; } list_for_each_entry(child_bus, &bus->children, node) pci_bus_register_of_sysfs(child_bus); diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c index 6c7a33af3ba..6e3874b6448 100644 --- a/arch/sparc/kernel/pci_common.c +++ b/arch/sparc/kernel/pci_common.c @@ -295,14 +295,17 @@ static int sun4v_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, unsigned int bus = bus_dev->number; unsigned int device = PCI_SLOT(devfn); unsigned int func = PCI_FUNC(devfn); - unsigned long ret; if (config_out_of_range(pbm, bus, devfn, where)) { /* Do nothing. */ } else { - ret = pci_sun4v_config_put(devhandle, - HV_PCI_DEVICE_BUILD(bus, device, func), - where, size, value); + /* We don't check for hypervisor errors here, but perhaps + * we should and influence our return value depending upon + * what kind of error is thrown. + */ + pci_sun4v_config_put(devhandle, + HV_PCI_DEVICE_BUILD(bus, device, func), + where, size, value); } return PCIBIOS_SUCCESSFUL; } diff --git a/arch/sparc/kernel/pci_fire.c b/arch/sparc/kernel/pci_fire.c index efb896d6875..75dfeb60ef6 100644 --- a/arch/sparc/kernel/pci_fire.c +++ b/arch/sparc/kernel/pci_fire.c @@ -214,11 +214,9 @@ static int pci_fire_msi_setup(struct pci_pbm_info *pbm, unsigned long msiqid, static int pci_fire_msi_teardown(struct pci_pbm_info *pbm, unsigned long msi) { - unsigned long msiqid; u64 val; val = upa_readq(pbm->pbm_regs + MSI_MAP(msi)); - msiqid = (val & MSI_MAP_EQNUM); val &= ~MSI_MAP_VALID; diff --git a/arch/sparc/kernel/pci_schizo.c b/arch/sparc/kernel/pci_schizo.c index 445a47a2fb3..4620eb76aef 100644 --- a/arch/sparc/kernel/pci_schizo.c +++ b/arch/sparc/kernel/pci_schizo.c @@ -1313,7 +1313,7 @@ static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm, const struct linux_prom64_registers *regs; struct device_node *dp = op->dev.of_node; const char *chipset_name; - int is_pbm_a, err; + int err; switch (chip_type) { case PBM_CHIP_TYPE_TOMATILLO: @@ -1343,8 +1343,6 @@ static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm, */ regs = of_get_property(dp, "reg", NULL); - is_pbm_a = ((regs[0].phys_addr & 0x00700000) == 0x00600000); - pbm->next = pci_pbm_root; pci_pbm_root = pbm; diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index 743344aa6d8..859abfd7893 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -580,7 +580,7 @@ static int __devinit pci_sun4v_iommu_init(struct pci_pbm_info *pbm) { static const u32 vdma_default[] = { 0x80000000, 0x80000000 }; struct iommu *iommu = pbm->iommu; - unsigned long num_tsb_entries, sz, tsbsize; + unsigned long num_tsb_entries, sz; u32 dma_mask, dma_offset; const u32 *vdma; @@ -596,7 +596,6 @@ static int __devinit pci_sun4v_iommu_init(struct pci_pbm_info *pbm) dma_mask = (roundup_pow_of_two(vdma[1]) - 1UL); num_tsb_entries = vdma[1] / IO_PAGE_SIZE; - tsbsize = num_tsb_entries * sizeof(iopte_t); dma_offset = vdma[0]; diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c index 7c2ced612b8..8ac23e66008 100644 --- a/arch/sparc/kernel/pcr.c +++ b/arch/sparc/kernel/pcr.c @@ -81,7 +81,7 @@ static void n2_pcr_write(u64 val) unsigned long ret; ret = sun4v_niagara2_setperf(HV_N2_PERF_SPARC_CTL, val); - if (val != HV_EOK) + if (ret != HV_EOK) write_pcr(val); } diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index 9ccc812bc09..96ee50a8066 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -1086,6 +1086,7 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) asmlinkage void syscall_trace_leave(struct pt_regs *regs) { +#ifdef CONFIG_AUDITSYSCALL if (unlikely(current->audit_context)) { unsigned long tstate = regs->tstate; int result = AUDITSC_SUCCESS; @@ -1095,7 +1096,7 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs) audit_syscall_exit(result, regs->u_regs[UREG_I0]); } - +#endif if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) trace_sys_exit(regs, regs->u_regs[UREG_G1]); diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index 555a76d1f4a..3e94a8c2323 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -189,7 +189,7 @@ static inline long get_delta (long *rt, long *master) void smp_synchronize_tick_client(void) { long i, delta, adj, adjust_latency = 0, done = 0; - unsigned long flags, rt, master_time_stamp, bound; + unsigned long flags, rt, master_time_stamp; #if DEBUG_TICK_SYNC struct { long rt; /* roundtrip time */ @@ -208,10 +208,8 @@ void smp_synchronize_tick_client(void) { for (i = 0; i < NUM_ROUNDS; i++) { delta = get_delta(&rt, &master_time_stamp); - if (delta == 0) { + if (delta == 0) done = 1; /* let's lock on to this... */ - bound = rt; - } if (!done) { if (i > 0) { @@ -933,13 +931,12 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu) void flush_dcache_page_all(struct mm_struct *mm, struct page *page) { void *pg_addr; - int this_cpu; u64 data0; if (tlb_type == hypervisor) return; - this_cpu = get_cpu(); + preempt_disable(); #ifdef CONFIG_DEBUG_DCFLUSH atomic_inc(&dcpage_flushes); @@ -964,7 +961,7 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page) } __local_flush_dcache_page(page); - put_cpu(); + preempt_enable(); } void __irq_entry smp_new_mmu_context_version_client(int irq, struct pt_regs *regs) diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c index 1e9770936c3..1ed547bd850 100644 --- a/arch/sparc/kernel/traps_64.c +++ b/arch/sparc/kernel/traps_64.c @@ -2152,7 +2152,7 @@ static void user_instruction_dump(unsigned int __user *pc) void show_stack(struct task_struct *tsk, unsigned long *_ksp) { - unsigned long fp, thread_base, ksp; + unsigned long fp, ksp; struct thread_info *tp; int count = 0; #ifdef CONFIG_FUNCTION_GRAPH_TRACER @@ -2173,7 +2173,6 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp) flushw_all(); fp = ksp + STACK_BIAS; - thread_base = (unsigned long) tp; printk("Call Trace:\n"); do { diff --git a/arch/sparc/kernel/una_asm_64.S b/arch/sparc/kernel/una_asm_64.S index be183fe4144..1c8d33228b2 100644 --- a/arch/sparc/kernel/una_asm_64.S +++ b/arch/sparc/kernel/una_asm_64.S @@ -127,7 +127,7 @@ do_int_load: wr %o5, 0x0, %asi retl mov 0, %o0 - .size __do_int_load, .-__do_int_load + .size do_int_load, .-do_int_load .section __ex_table,"a" .word 4b, __retl_efault diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c index 5b836f5aea9..b10ac4d6237 100644 --- a/arch/sparc/mm/fault_32.c +++ b/arch/sparc/mm/fault_32.c @@ -240,11 +240,10 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write, * only copy the information from the master page table, * nothing more. */ + code = SEGV_MAPERR; if (!ARCH_SUN4C && address >= TASK_SIZE) goto vmalloc_fault; - code = SEGV_MAPERR; - /* * If we're in an interrupt or have no user * context, we must not take the fault.. diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index 43a18c77676..99b402c6a91 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -92,11 +92,15 @@ #define MSR_IA32_MC0_ADDR 0x00000402 #define MSR_IA32_MC0_MISC 0x00000403 +#define MSR_AMD64_MC0_MASK 0xc0010044 + #define MSR_IA32_MCx_CTL(x) (MSR_IA32_MC0_CTL + 4*(x)) #define MSR_IA32_MCx_STATUS(x) (MSR_IA32_MC0_STATUS + 4*(x)) #define MSR_IA32_MCx_ADDR(x) (MSR_IA32_MC0_ADDR + 4*(x)) #define MSR_IA32_MCx_MISC(x) (MSR_IA32_MC0_MISC + 4*(x)) +#define MSR_AMD64_MCx_MASK(x) (MSR_AMD64_MC0_MASK + (x)) + /* These are consecutive and not in the normal 4er MCE bank block */ #define MSR_IA32_MC0_CTL2 0x00000280 #define MSR_IA32_MCx_CTL2(x) (MSR_IA32_MC0_CTL2 + (x)) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 7c7bedb83c5..a2b9c7d4132 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -594,6 +594,29 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) } } #endif + + /* As a rule processors have APIC timer running in deep C states */ + if (c->x86 >= 0xf && !cpu_has_amd_erratum(amd_erratum_400)) + set_cpu_cap(c, X86_FEATURE_ARAT); + + /* + * Disable GART TLB Walk Errors on Fam10h. We do this here + * because this is always needed when GART is enabled, even in a + * kernel which has no MCE support built in. + */ + if (c->x86 == 0x10) { + /* + * BIOS should disable GartTlbWlk Errors themself. If + * it doesn't do it here as suggested by the BKDG. + * + * Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=33012 + */ + u64 mask; + + rdmsrl(MSR_AMD64_MCx_MASK(4), mask); + mask |= (1 << 10); + wrmsrl(MSR_AMD64_MCx_MASK(4), mask); + } } #ifdef CONFIG_X86_32 diff --git a/arch/x86/lib/semaphore_32.S b/arch/x86/lib/semaphore_32.S index 648fe474178..f35eec78a68 100644 --- a/arch/x86/lib/semaphore_32.S +++ b/arch/x86/lib/semaphore_32.S @@ -36,7 +36,7 @@ */ #ifdef CONFIG_SMP ENTRY(__write_lock_failed) - CFI_STARTPROC simple + CFI_STARTPROC FRAME 2: LOCK_PREFIX addl $ RW_LOCK_BIAS,(%eax) |