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author | David Woodhouse <dwmw2@shinybook.infradead.org> | 2005-06-02 16:39:11 +0100 |
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committer | David Woodhouse <dwmw2@shinybook.infradead.org> | 2005-06-02 16:39:11 +0100 |
commit | 1c3f45ab2f7f879ea482501c83899505c31f7539 (patch) | |
tree | 672465b3b9b3e2e26a8caf74ed64aa6885c52c13 /arch/ia64 | |
parent | 4bcff1b37e7c3aed914d1ce5b45994adc7dbf455 (diff) | |
parent | e0d6d71440a3a35c6fc2dde09f8e8d4d7bd44dda (diff) | |
download | op-kernel-dev-1c3f45ab2f7f879ea482501c83899505c31f7539.zip op-kernel-dev-1c3f45ab2f7f879ea482501c83899505c31f7539.tar.gz |
Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'arch/ia64')
-rw-r--r-- | arch/ia64/ia32/sys_ia32.c | 2 | ||||
-rw-r--r-- | arch/ia64/kernel/entry.S | 4 | ||||
-rw-r--r-- | arch/ia64/kernel/mca.c | 8 | ||||
-rw-r--r-- | arch/ia64/kernel/minstate.h | 3 | ||||
-rw-r--r-- | arch/ia64/kernel/perfmon.c | 175 | ||||
-rw-r--r-- | arch/ia64/kernel/ptrace.c | 20 | ||||
-rw-r--r-- | arch/ia64/kernel/smpboot.c | 2 | ||||
-rw-r--r-- | arch/ia64/kernel/sys_ia64.c | 7 | ||||
-rw-r--r-- | arch/ia64/sn/kernel/setup.c | 2 |
9 files changed, 188 insertions, 35 deletions
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c index 247a21c..c1e20d6 100644 --- a/arch/ia64/ia32/sys_ia32.c +++ b/arch/ia64/ia32/sys_ia32.c @@ -2427,7 +2427,7 @@ sys32_epoll_wait(int epfd, struct epoll_event32 __user * events, int maxevents, { struct epoll_event *events64 = NULL; mm_segment_t old_fs = get_fs(); - int error, numevents, size; + int numevents, size; int evt_idx; int do_free_pages = 0; diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S index 81c45d4..d99316c 100644 --- a/arch/ia64/kernel/entry.S +++ b/arch/ia64/kernel/entry.S @@ -1182,7 +1182,7 @@ ENTRY(notify_resume_user) ;; (pNonSys) mov out2=0 // out2==0 => not a syscall .fframe 16 - .spillpsp ar.unat, 16 // (note that offset is relative to psp+0x10!) + .spillsp ar.unat, 16 st8 [sp]=r9,-16 // allocate space for ar.unat and save it st8 [out1]=loc1,-8 // save ar.pfs, out1=&sigscratch .body @@ -1208,7 +1208,7 @@ GLOBAL_ENTRY(sys_rt_sigsuspend) adds out2=8,sp // out2=&sigscratch->ar_pfs ;; .fframe 16 - .spillpsp ar.unat, 16 // (note that offset is relative to psp+0x10!) + .spillsp ar.unat, 16 st8 [sp]=r9,-16 // allocate space for ar.unat and save it st8 [out2]=loc1,-8 // save ar.pfs, out2=&sigscratch .body diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index 4d6c7b8f..736e328 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -1103,8 +1103,6 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg, struct pt_regs *ptregs) return IRQ_HANDLED; } -#endif /* CONFIG_ACPI */ - /* * ia64_mca_cpe_poll * @@ -1122,6 +1120,8 @@ ia64_mca_cpe_poll (unsigned long dummy) platform_send_ipi(first_cpu(cpu_online_map), IA64_CPEP_VECTOR, IA64_IPI_DM_INT, 0); } +#endif /* CONFIG_ACPI */ + /* * C portion of the OS INIT handler * @@ -1390,8 +1390,7 @@ ia64_mca_init(void) register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction); #ifdef CONFIG_ACPI - /* Setup the CPEI/P vector and handler */ - cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI); + /* Setup the CPEI/P handler */ register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction); #endif @@ -1436,6 +1435,7 @@ ia64_mca_late_init(void) #ifdef CONFIG_ACPI /* Setup the CPEI/P vector and handler */ + cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI); init_timer(&cpe_poll_timer); cpe_poll_timer.function = ia64_mca_cpe_poll; diff --git a/arch/ia64/kernel/minstate.h b/arch/ia64/kernel/minstate.h index 1dbc7b2..f6d8a01 100644 --- a/arch/ia64/kernel/minstate.h +++ b/arch/ia64/kernel/minstate.h @@ -41,7 +41,7 @@ (pKStk) addl r3=THIS_CPU(ia64_mca_data),r3;; \ (pKStk) ld8 r3 = [r3];; \ (pKStk) addl r3=IA64_MCA_CPU_INIT_STACK_OFFSET,r3;; \ -(pKStk) addl sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r3; \ +(pKStk) addl r1=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r3; \ (pUStk) mov ar.rsc=0; /* set enforced lazy mode, pl 0, little-endian, loadrs=0 */ \ (pUStk) addl r22=IA64_RBS_OFFSET,r1; /* compute base of register backing store */ \ ;; \ @@ -50,7 +50,6 @@ (pUStk) mov r23=ar.bspstore; /* save ar.bspstore */ \ (pUStk) dep r22=-1,r22,61,3; /* compute kernel virtual addr of RBS */ \ ;; \ -(pKStk) addl r1=-IA64_PT_REGS_SIZE,r1; /* if in kernel mode, use sp (r12) */ \ (pUStk) mov ar.bspstore=r22; /* switch to kernel RBS */ \ ;; \ (pUStk) mov r18=ar.bsp; \ diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 71c1016..6407bff 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -11,7 +11,7 @@ * Version Perfmon-2.x is a rewrite of perfmon-1.x * by Stephane Eranian, Hewlett Packard Co. * - * Copyright (C) 1999-2003, 2005 Hewlett Packard Co + * Copyright (C) 1999-2005 Hewlett Packard Co * Stephane Eranian <eranian@hpl.hp.com> * David Mosberger-Tang <davidm@hpl.hp.com> * @@ -497,6 +497,9 @@ typedef struct { static pfm_stats_t pfm_stats[NR_CPUS]; static pfm_session_t pfm_sessions; /* global sessions information */ +static spinlock_t pfm_alt_install_check = SPIN_LOCK_UNLOCKED; +static pfm_intr_handler_desc_t *pfm_alt_intr_handler; + static struct proc_dir_entry *perfmon_dir; static pfm_uuid_t pfm_null_uuid = {0,}; @@ -606,6 +609,7 @@ DEFINE_PER_CPU(unsigned long, pfm_syst_info); DEFINE_PER_CPU(struct task_struct *, pmu_owner); DEFINE_PER_CPU(pfm_context_t *, pmu_ctx); DEFINE_PER_CPU(unsigned long, pmu_activation_number); +EXPORT_PER_CPU_SYMBOL_GPL(pfm_syst_info); /* forward declaration */ @@ -1325,7 +1329,7 @@ pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu) error_conflict: DPRINT(("system wide not possible, conflicting session [%d] on CPU%d\n", pfm_sessions.pfs_sys_session[cpu]->pid, - smp_processor_id())); + cpu)); abort: UNLOCK_PFS(flags); @@ -5555,26 +5559,32 @@ pfm_interrupt_handler(int irq, void *arg, struct pt_regs *regs) int ret; this_cpu = get_cpu(); - min = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min; - max = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max; + if (likely(!pfm_alt_intr_handler)) { + min = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min; + max = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max; - start_cycles = ia64_get_itc(); + start_cycles = ia64_get_itc(); - ret = pfm_do_interrupt_handler(irq, arg, regs); + ret = pfm_do_interrupt_handler(irq, arg, regs); - total_cycles = ia64_get_itc(); + total_cycles = ia64_get_itc(); - /* - * don't measure spurious interrupts - */ - if (likely(ret == 0)) { - total_cycles -= start_cycles; + /* + * don't measure spurious interrupts + */ + if (likely(ret == 0)) { + total_cycles -= start_cycles; - if (total_cycles < min) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min = total_cycles; - if (total_cycles > max) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max = total_cycles; + if (total_cycles < min) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min = total_cycles; + if (total_cycles > max) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max = total_cycles; - pfm_stats[this_cpu].pfm_ovfl_intr_cycles += total_cycles; + pfm_stats[this_cpu].pfm_ovfl_intr_cycles += total_cycles; + } + } + else { + (*pfm_alt_intr_handler->handler)(irq, arg, regs); } + put_cpu_no_resched(); return IRQ_HANDLED; } @@ -6425,6 +6435,141 @@ static struct irqaction perfmon_irqaction = { .name = "perfmon" }; +static void +pfm_alt_save_pmu_state(void *data) +{ + struct pt_regs *regs; + + regs = ia64_task_regs(current); + + DPRINT(("called\n")); + + /* + * should not be necessary but + * let's take not risk + */ + pfm_clear_psr_up(); + pfm_clear_psr_pp(); + ia64_psr(regs)->pp = 0; + + /* + * This call is required + * May cause a spurious interrupt on some processors + */ + pfm_freeze_pmu(); + + ia64_srlz_d(); +} + +void +pfm_alt_restore_pmu_state(void *data) +{ + struct pt_regs *regs; + + regs = ia64_task_regs(current); + + DPRINT(("called\n")); + + /* + * put PMU back in state expected + * by perfmon + */ + pfm_clear_psr_up(); + pfm_clear_psr_pp(); + ia64_psr(regs)->pp = 0; + + /* + * perfmon runs with PMU unfrozen at all times + */ + pfm_unfreeze_pmu(); + + ia64_srlz_d(); +} + +int +pfm_install_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl) +{ + int ret, i; + int reserve_cpu; + + /* some sanity checks */ + if (hdl == NULL || hdl->handler == NULL) return -EINVAL; + + /* do the easy test first */ + if (pfm_alt_intr_handler) return -EBUSY; + + /* one at a time in the install or remove, just fail the others */ + if (!spin_trylock(&pfm_alt_install_check)) { + return -EBUSY; + } + + /* reserve our session */ + for_each_online_cpu(reserve_cpu) { + ret = pfm_reserve_session(NULL, 1, reserve_cpu); + if (ret) goto cleanup_reserve; + } + + /* save the current system wide pmu states */ + ret = on_each_cpu(pfm_alt_save_pmu_state, NULL, 0, 1); + if (ret) { + DPRINT(("on_each_cpu() failed: %d\n", ret)); + goto cleanup_reserve; + } + + /* officially change to the alternate interrupt handler */ + pfm_alt_intr_handler = hdl; + + spin_unlock(&pfm_alt_install_check); + + return 0; + +cleanup_reserve: + for_each_online_cpu(i) { + /* don't unreserve more than we reserved */ + if (i >= reserve_cpu) break; + + pfm_unreserve_session(NULL, 1, i); + } + + spin_unlock(&pfm_alt_install_check); + + return ret; +} +EXPORT_SYMBOL_GPL(pfm_install_alt_pmu_interrupt); + +int +pfm_remove_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl) +{ + int i; + int ret; + + if (hdl == NULL) return -EINVAL; + + /* cannot remove someone else's handler! */ + if (pfm_alt_intr_handler != hdl) return -EINVAL; + + /* one at a time in the install or remove, just fail the others */ + if (!spin_trylock(&pfm_alt_install_check)) { + return -EBUSY; + } + + pfm_alt_intr_handler = NULL; + + ret = on_each_cpu(pfm_alt_restore_pmu_state, NULL, 0, 1); + if (ret) { + DPRINT(("on_each_cpu() failed: %d\n", ret)); + } + + for_each_online_cpu(i) { + pfm_unreserve_session(NULL, 1, i); + } + + spin_unlock(&pfm_alt_install_check); + + return 0; +} +EXPORT_SYMBOL_GPL(pfm_remove_alt_pmu_interrupt); + /* * perfmon initialization routine, called from the initcall() table */ diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c index 907464e..08c8a5e 100644 --- a/arch/ia64/kernel/ptrace.c +++ b/arch/ia64/kernel/ptrace.c @@ -692,16 +692,30 @@ convert_to_non_syscall (struct task_struct *child, struct pt_regs *pt, unsigned long cfm) { struct unw_frame_info info, prev_info; - unsigned long ip, pr; + unsigned long ip, sp, pr; unw_init_from_blocked_task(&info, child); while (1) { prev_info = info; if (unw_unwind(&info) < 0) return; - if (unw_get_rp(&info, &ip) < 0) + + unw_get_sp(&info, &sp); + if ((long)((unsigned long)child + IA64_STK_OFFSET - sp) + < IA64_PT_REGS_SIZE) { + dprintk("ptrace.%s: ran off the top of the kernel " + "stack\n", __FUNCTION__); + return; + } + if (unw_get_pr (&prev_info, &pr) < 0) { + unw_get_rp(&prev_info, &ip); + dprintk("ptrace.%s: failed to read " + "predicate register (ip=0x%lx)\n", + __FUNCTION__, ip); return; - if (ip < FIXADDR_USER_END) + } + if (unw_is_intr_frame(&info) + && (pr & (1UL << PRED_USER_STACK))) break; } diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c index 0d5ee57..3865f08 100644 --- a/arch/ia64/kernel/smpboot.c +++ b/arch/ia64/kernel/smpboot.c @@ -624,7 +624,7 @@ static struct { __u16 thread_id; __u16 proc_fixed_addr; __u8 valid; -}mt_info[NR_CPUS] __devinit; +} mt_info[NR_CPUS] __devinitdata; #ifdef CONFIG_HOTPLUG_CPU static inline void diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c index a8cf6d8..770fab3 100644 --- a/arch/ia64/kernel/sys_ia64.c +++ b/arch/ia64/kernel/sys_ia64.c @@ -182,13 +182,6 @@ do_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, un } } - /* - * A zero mmap always succeeds in Linux, independent of whether or not the - * remaining arguments are valid. - */ - if (len == 0) - goto out; - /* Careful about overflows.. */ len = PAGE_ALIGN(len); if (!len || len > TASK_SIZE) { diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c index 4fb4498..e64cb81 100644 --- a/arch/ia64/sn/kernel/setup.c +++ b/arch/ia64/sn/kernel/setup.c @@ -271,6 +271,8 @@ void __init sn_setup(char **cmdline_p) int major = sn_sal_rev_major(), minor = sn_sal_rev_minor(); extern void sn_cpu_init(void); + ia64_sn_plat_set_error_handling_features(); + /* * If the generic code has enabled vga console support - lets * get rid of it again. This is a kludge for the fact that ACPI |