diff options
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/early.c | 125 | ||||
| -rw-r--r-- | arch/s390/kernel/head31.S | 61 | ||||
| -rw-r--r-- | arch/s390/kernel/head64.S | 64 | ||||
| -rw-r--r-- | arch/s390/kernel/process.c | 18 | ||||
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 57 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 21 | ||||
| -rw-r--r-- | arch/s390/kernel/smp.c | 31 | ||||
| -rw-r--r-- | arch/s390/kernel/topology.c | 35 | ||||
| -rw-r--r-- | arch/s390/kernel/traps.c | 26 |
10 files changed, 205 insertions, 235 deletions
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 77051cd2792..6302f508258 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -2,8 +2,6 @@ # Makefile for the linux kernel. # -EXTRA_AFLAGS := -traditional - # # Passing null pointers is ok for smp code, since we access the lowcore here. # diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 68ec4083bf7..d0e09684b9c 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -139,15 +139,15 @@ static noinline __init void detect_machine_type(void) /* Running under z/VM ? */ if (cpuinfo->cpu_id.version == 0xff) - machine_flags |= 1; + machine_flags |= MACHINE_FLAG_VM; /* Running on a P/390 ? */ if (cpuinfo->cpu_id.machine == 0x7490) - machine_flags |= 4; + machine_flags |= MACHINE_FLAG_P390; /* Running under KVM ? */ if (cpuinfo->cpu_id.version == 0xfe) - machine_flags |= 64; + machine_flags |= MACHINE_FLAG_KVM; } #ifdef CONFIG_64BIT @@ -268,6 +268,118 @@ static noinline __init void setup_lowcore_early(void) s390_base_pgm_handler_fn = early_pgm_check_handler; } +static noinline __init void setup_hpage(void) +{ +#ifndef CONFIG_DEBUG_PAGEALLOC + unsigned int facilities; + + facilities = stfl(); + if (!(facilities & (1UL << 23)) || !(facilities & (1UL << 29))) + return; + machine_flags |= MACHINE_FLAG_HPAGE; + __ctl_set_bit(0, 23); +#endif +} + +static __init void detect_mvpg(void) +{ +#ifndef CONFIG_64BIT + int rc; + + asm volatile( + " la 0,0\n" + " mvpg %2,%2\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc) : "0" (-EOPNOTSUPP), "a" (0) : "memory", "cc", "0"); + if (!rc) + machine_flags |= MACHINE_FLAG_MVPG; +#endif +} + +static __init void detect_ieee(void) +{ +#ifndef CONFIG_64BIT + int rc, tmp; + + asm volatile( + " efpc %1,0\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc), "=d" (tmp): "0" (-EOPNOTSUPP) : "cc"); + if (!rc) + machine_flags |= MACHINE_FLAG_IEEE; +#endif +} + +static __init void detect_csp(void) +{ +#ifndef CONFIG_64BIT + int rc; + + asm volatile( + " la 0,0\n" + " la 1,0\n" + " la 2,4\n" + " csp 0,2\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc) : "0" (-EOPNOTSUPP) : "cc", "0", "1", "2"); + if (!rc) + machine_flags |= MACHINE_FLAG_CSP; +#endif +} + +static __init void detect_diag9c(void) +{ + unsigned int cpu_address; + int rc; + + cpu_address = stap(); + asm volatile( + " diag %2,0,0x9c\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc) : "0" (-EOPNOTSUPP), "d" (cpu_address) : "cc"); + if (!rc) + machine_flags |= MACHINE_FLAG_DIAG9C; +} + +static __init void detect_diag44(void) +{ +#ifdef CONFIG_64BIT + int rc; + + asm volatile( + " diag 0,0,0x44\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc) : "0" (-EOPNOTSUPP) : "cc"); + if (!rc) + machine_flags |= MACHINE_FLAG_DIAG44; +#endif +} + +static __init void detect_machine_facilities(void) +{ +#ifdef CONFIG_64BIT + unsigned int facilities; + + facilities = stfl(); + if (facilities & (1 << 28)) + machine_flags |= MACHINE_FLAG_IDTE; + if (facilities & (1 << 23)) + machine_flags |= MACHINE_FLAG_PFMF; + if (facilities & (1 << 4)) + machine_flags |= MACHINE_FLAG_MVCOS; +#endif +} + /* * Save ipl parameters, clear bss memory, initialize storage keys * and create a kernel NSS at startup if the SAVESYS= parm is defined @@ -285,6 +397,13 @@ void __init startup_init(void) create_kernel_nss(); sort_main_extable(); setup_lowcore_early(); + detect_mvpg(); + detect_ieee(); + detect_csp(); + detect_diag9c(); + detect_diag44(); + detect_machine_facilities(); + setup_hpage(); sclp_read_info_early(); sclp_facilities_detect(); memsize = sclp_memory_detect(); diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S index dc364c1419a..a816e2de32b 100644 --- a/arch/s390/kernel/head31.S +++ b/arch/s390/kernel/head31.S @@ -57,61 +57,6 @@ startup_continue: # l %r14,.Lstartup_init-.LPG1(%r13) basr %r14,%r14 - - l %r12,.Lmflags-.LPG1(%r13) # get address of machine_flags -# -# find out if we have an IEEE fpu -# - mvc __LC_PGM_NEW_PSW(8),.Lpcfpu-.LPG1(%r13) - efpc %r0,0 # test IEEE extract fpc instruction - oi 3(%r12),2 # set IEEE fpu flag -.Lchkfpu: - -# -# find out if we have the CSP instruction -# - mvc __LC_PGM_NEW_PSW(8),.Lpccsp-.LPG1(%r13) - la %r0,0 - lr %r1,%r0 - la %r2,4 - csp %r0,%r2 # Test CSP instruction - oi 3(%r12),8 # set CSP flag -.Lchkcsp: - -# -# find out if we have the MVPG instruction -# - mvc __LC_PGM_NEW_PSW(8),.Lpcmvpg-.LPG1(%r13) - sr %r0,%r0 - la %r1,0 - la %r2,0 - mvpg %r1,%r2 # Test CSP instruction - oi 3(%r12),16 # set MVPG flag -.Lchkmvpg: - -# -# find out if we have the IDTE instruction -# - mvc __LC_PGM_NEW_PSW(8),.Lpcidte-.LPG1(%r13) - .long 0xb2b10000 # store facility list - tm 0xc8,0x08 # check bit for clearing-by-ASCE - bno .Lchkidte-.LPG1(%r13) - lhi %r1,2094 - lhi %r2,0 - .long 0xb98e2001 - oi 3(%r12),0x80 # set IDTE flag -.Lchkidte: - -# -# find out if the diag 0x9c is available -# - mvc __LC_PGM_NEW_PSW(8),.Lpcdiag9c-.LPG1(%r13) - stap __LC_CPUID+4 # store cpu address - lh %r1,__LC_CPUID+4 - diag %r1,0,0x9c # test diag 0x9c - oi 2(%r12),1 # set diag9c flag -.Lchkdiag9c: - lpsw .Lentry-.LPG1(13) # jump to _stext in primary-space, # virtual and never return ... .align 8 @@ -132,13 +77,7 @@ startup_continue: .long 0 # cr13: home space segment table .long 0xc0000000 # cr14: machine check handling off .long 0 # cr15: linkage stack operations -.Lpcfpu:.long 0x00080000,0x80000000 + .Lchkfpu -.Lpccsp:.long 0x00080000,0x80000000 + .Lchkcsp -.Lpcmvpg:.long 0x00080000,0x80000000 + .Lchkmvpg -.Lpcidte:.long 0x00080000,0x80000000 + .Lchkidte -.Lpcdiag9c:.long 0x00080000,0x80000000 + .Lchkdiag9c .Lmchunk:.long memory_chunk -.Lmflags:.long machine_flags .Lbss_bgn: .long __bss_start .Lbss_end: .long _end .Lparmaddr: .long PARMAREA diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 79dccd206a6..1d06961e87b 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -125,73 +125,11 @@ startup_continue: # and create a kernel NSS if the SAVESYS= parm is defined # brasl %r14,startup_init - # set program check new psw mask - mvc __LC_PGM_NEW_PSW(8),.Lpcmsk-.LPG1(%r13) - larl %r12,machine_flags -# -# find out if we have the MVPG instruction -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - sgr %r0,%r0 - lghi %r1,0 - lghi %r2,0 - mvpg %r1,%r2 # test MVPG instruction - oi 7(%r12),16 # set MVPG flag -0: - -# -# find out if the diag 0x44 works in 64 bit mode -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - diag 0,0,0x44 # test diag 0x44 - oi 7(%r12),32 # set diag44 flag -0: - -# -# find out if we have the IDTE instruction -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - .long 0xb2b10000 # store facility list - tm 0xc8,0x08 # check bit for clearing-by-ASCE - bno 0f-.LPG1(%r13) - lhi %r1,2048 - lhi %r2,0 - .long 0xb98e2001 - oi 7(%r12),0x80 # set IDTE flag -0: - -# -# find out if the diag 0x9c is available -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - stap __LC_CPUID+4 # store cpu address - lh %r1,__LC_CPUID+4 - diag %r1,0,0x9c # test diag 0x9c - oi 6(%r12),1 # set diag9c flag -0: - -# -# find out if we have the MVCOS instruction -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - .short 0xc800 # mvcos 0(%r0),0(%r0),%r0 - .short 0x0000 - .short 0x0000 -0: tm 0x8f,0x13 # special-operation exception? - bno 1f-.LPG1(%r13) # if yes, MVCOS is present - oi 6(%r12),2 # set MVCOS flag -1: - lpswe .Lentry-.LPG1(13) # jump to _stext in primary-space, # virtual and never return ... .align 16 .Lentry:.quad 0x0000000180000000,_stext -.Lctl: .quad 0x04b50002 # cr0: various things +.Lctl: .quad 0x04350002 # cr0: various things .quad 0 # cr1: primary space segment table .quad .Lduct # cr2: dispatchable unit control table .quad 0 # cr3: instruction authorization diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index c1aff194141..7920861109d 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -180,24 +180,6 @@ void cpu_idle(void) } } -void show_regs(struct pt_regs *regs) -{ - print_modules(); - printk("CPU: %d %s %s %.*s\n", - task_thread_info(current)->cpu, print_tainted(), - init_utsname()->release, - (int)strcspn(init_utsname()->version, " "), - init_utsname()->version); - printk("Process %s (pid: %d, task: %p, ksp: %p)\n", - current->comm, current->pid, current, - (void *) current->thread.ksp); - show_registers(regs); - /* Show stack backtrace if pt_regs is from kernel mode */ - if (!(regs->psw.mask & PSW_MASK_PSTATE)) - show_trace(NULL, (unsigned long *) regs->gprs[15]); - show_last_breaking_event(regs); -} - extern void kernel_thread_starter(void); asm( diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 58a06429698..7f427016374 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -607,38 +607,8 @@ do_ptrace_emu31(struct task_struct *child, long request, long addr, long data) } #endif -#define PT32_IEEE_IP 0x13c - -static int -do_ptrace(struct task_struct *child, long request, long addr, long data) +long arch_ptrace(struct task_struct *child, long request, long addr, long data) { - int ret; - - if (request == PTRACE_ATTACH) - return ptrace_attach(child); - - /* - * Special cases to get/store the ieee instructions pointer. - */ - if (child == current) { - if (request == PTRACE_PEEKUSR && addr == PT_IEEE_IP) - return peek_user(child, addr, data); - if (request == PTRACE_POKEUSR && addr == PT_IEEE_IP) - return poke_user(child, addr, data); -#ifdef CONFIG_COMPAT - if (request == PTRACE_PEEKUSR && - addr == PT32_IEEE_IP && test_thread_flag(TIF_31BIT)) - return peek_user_emu31(child, addr, data); - if (request == PTRACE_POKEUSR && - addr == PT32_IEEE_IP && test_thread_flag(TIF_31BIT)) - return poke_user_emu31(child, addr, data); -#endif - } - - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret < 0) - return ret; - switch (request) { case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ @@ -693,31 +663,6 @@ do_ptrace(struct task_struct *child, long request, long addr, long data) return -EIO; } -asmlinkage long -sys_ptrace(long request, long pid, long addr, long data) -{ - struct task_struct *child; - int ret; - - lock_kernel(); - if (request == PTRACE_TRACEME) { - ret = ptrace_traceme(); - goto out; - } - - child = ptrace_get_task_struct(pid); - if (IS_ERR(child)) { - ret = PTR_ERR(child); - goto out; - } - - ret = do_ptrace(child, request, addr, data); - put_task_struct(child); -out: - unlock_kernel(); - return ret; -} - asmlinkage void syscall_trace(struct pt_regs *regs, int entryexit) { diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index a9d18aafa5f..2bc70b6e876 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -73,7 +73,7 @@ EXPORT_SYMBOL(uaccess); unsigned int console_mode = 0; unsigned int console_devno = -1; unsigned int console_irq = -1; -unsigned long machine_flags = 0; +unsigned long machine_flags; unsigned long elf_hwcap = 0; char elf_platform[ELF_PLATFORM_SIZE]; @@ -683,15 +683,6 @@ setup_memory(void) #endif } -static __init unsigned int stfl(void) -{ - asm volatile( - " .insn s,0xb2b10000,0(0)\n" /* stfl */ - "0:\n" - EX_TABLE(0b,0b)); - return S390_lowcore.stfl_fac_list; -} - static int __init __stfle(unsigned long long *list, int doublewords) { typedef struct { unsigned long long _[doublewords]; } addrtype; @@ -758,6 +749,9 @@ static void __init setup_hwcaps(void) elf_hwcap |= 1UL << 6; } + if (MACHINE_HAS_HPAGE) + elf_hwcap |= 1UL << 7; + switch (cpuinfo->cpu_id.machine) { case 0x9672: #if !defined(CONFIG_64BIT) @@ -881,8 +875,9 @@ void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo) static int show_cpuinfo(struct seq_file *m, void *v) { - static const char *hwcap_str[7] = { - "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp" + static const char *hwcap_str[8] = { + "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp", + "edat" }; struct cpuinfo_S390 *cpuinfo; unsigned long n = (unsigned long) v - 1; @@ -897,7 +892,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) num_online_cpus(), loops_per_jiffy/(500000/HZ), (loops_per_jiffy/(5000/HZ))%100); seq_puts(m, "features\t: "); - for (i = 0; i < 7; i++) + for (i = 0; i < 8; i++) if (hwcap_str[i] && (elf_hwcap & (1UL << i))) seq_printf(m, "%s ", hwcap_str[i]); seq_puts(m, "\n"); diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 0dfa988c1b2..0aeb290060d 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -505,7 +505,7 @@ out: return rc; } -static int smp_rescan_cpus(void) +static int __smp_rescan_cpus(void) { cpumask_t avail; @@ -570,7 +570,7 @@ out: kfree(info); printk(KERN_INFO "CPUs: %d configured, %d standby\n", c_cpus, s_cpus); get_online_cpus(); - smp_rescan_cpus(); + __smp_rescan_cpus(); put_online_cpus(); } @@ -890,8 +890,8 @@ static ssize_t cpu_configure_store(struct sys_device *dev, const char *buf, if (val != 0 && val != 1) return -EINVAL; - mutex_lock(&smp_cpu_state_mutex); get_online_cpus(); + mutex_lock(&smp_cpu_state_mutex); rc = -EBUSY; if (cpu_online(cpu)) goto out; @@ -919,8 +919,8 @@ static ssize_t cpu_configure_store(struct sys_device *dev, const char *buf, break; } out: - put_online_cpus(); mutex_unlock(&smp_cpu_state_mutex); + put_online_cpus(); return rc ? rc : count; } static SYSDEV_ATTR(configure, 0644, cpu_configure_show, cpu_configure_store); @@ -1088,17 +1088,17 @@ out: } #ifdef CONFIG_HOTPLUG_CPU -static ssize_t __ref rescan_store(struct sys_device *dev, - const char *buf, size_t count) + +int smp_rescan_cpus(void) { cpumask_t newcpus; int cpu; int rc; - mutex_lock(&smp_cpu_state_mutex); get_online_cpus(); + mutex_lock(&smp_cpu_state_mutex); newcpus = cpu_present_map; - rc = smp_rescan_cpus(); + rc = __smp_rescan_cpus(); if (rc) goto out; cpus_andnot(newcpus, cpu_present_map, newcpus); @@ -1109,10 +1109,19 @@ static ssize_t __ref rescan_store(struct sys_device *dev, } rc = 0; out: - put_online_cpus(); mutex_unlock(&smp_cpu_state_mutex); + put_online_cpus(); if (!cpus_empty(newcpus)) topology_schedule_update(); + return rc; +} + +static ssize_t __ref rescan_store(struct sys_device *dev, const char *buf, + size_t count) +{ + int rc; + + rc = smp_rescan_cpus(); return rc ? rc : count; } static SYSDEV_ATTR(rescan, 0200, NULL, rescan_store); @@ -1139,16 +1148,16 @@ static ssize_t dispatching_store(struct sys_device *dev, const char *buf, if (val != 0 && val != 1) return -EINVAL; rc = 0; - mutex_lock(&smp_cpu_state_mutex); get_online_cpus(); + mutex_lock(&smp_cpu_state_mutex); if (cpu_management == val) goto out; rc = topology_set_cpu_management(val); if (!rc) cpu_management = val; out: - put_online_cpus(); mutex_unlock(&smp_cpu_state_mutex); + put_online_cpus(); return rc ? rc : count; } static SYSDEV_ATTR(dispatching, 0644, dispatching_show, dispatching_store); diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 12b39b3d9c3..661a0721705 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -9,6 +9,7 @@ #include <linux/device.h> #include <linux/bootmem.h> #include <linux/sched.h> +#include <linux/kthread.h> #include <linux/workqueue.h> #include <linux/cpu.h> #include <linux/smp.h> @@ -66,6 +67,8 @@ static struct timer_list topology_timer; static void set_topology_timer(void); static DECLARE_WORK(topology_work, topology_work_fn); +cpumask_t cpu_core_map[NR_CPUS]; + cpumask_t cpu_coregroup_map(unsigned int cpu) { struct core_info *core = &core_info; @@ -199,6 +202,14 @@ int topology_set_cpu_management(int fc) return rc; } +static void update_cpu_core_map(void) +{ + int cpu; + + for_each_present_cpu(cpu) + cpu_core_map[cpu] = cpu_coregroup_map(cpu); +} + void arch_update_cpu_topology(void) { struct tl_info *info = tl_info; @@ -206,20 +217,33 @@ void arch_update_cpu_topology(void) int cpu; if (!machine_has_topology) { + update_cpu_core_map(); topology_update_polarization_simple(); return; } stsi(info, 15, 1, 2); tl_to_cores(info); + update_cpu_core_map(); for_each_online_cpu(cpu) { sysdev = get_cpu_sysdev(cpu); kobject_uevent(&sysdev->kobj, KOBJ_CHANGE); } } -static void topology_work_fn(struct work_struct *work) +static int topology_kthread(void *data) { arch_reinit_sched_domains(); + return 0; +} + +static void topology_work_fn(struct work_struct *work) +{ + /* We can't call arch_reinit_sched_domains() from a multi-threaded + * workqueue context since it may deadlock in case of cpu hotplug. + * So we have to create a kernel thread in order to call + * arch_reinit_sched_domains(). + */ + kthread_run(topology_kthread, NULL, "topology_update"); } void topology_schedule_update(void) @@ -251,20 +275,23 @@ static int __init init_topology_update(void) { int rc; + rc = 0; if (!machine_has_topology) { topology_update_polarization_simple(); - return 0; + goto out; } init_timer_deferrable(&topology_timer); if (machine_has_topology_irq) { rc = register_external_interrupt(0x2005, topology_interrupt); if (rc) - return rc; + goto out; ctl_set_bit(0, 8); } else set_topology_timer(); - return 0; +out: + update_cpu_core_map(); + return rc; } __initcall(init_topology_update); diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index 57b607b6110..4584d81984c 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -113,7 +113,7 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high) } } -void show_trace(struct task_struct *task, unsigned long *stack) +static void show_trace(struct task_struct *task, unsigned long *stack) { register unsigned long __r15 asm ("15"); unsigned long sp; @@ -161,14 +161,14 @@ void show_stack(struct task_struct *task, unsigned long *sp) show_trace(task, sp); } -#ifdef CONFIG_64BIT -void show_last_breaking_event(struct pt_regs *regs) +static void show_last_breaking_event(struct pt_regs *regs) { +#ifdef CONFIG_64BIT printk("Last Breaking-Event-Address:\n"); printk(" [<%016lx>] ", regs->args[0] & PSW_ADDR_INSN); print_symbol("%s\n", regs->args[0] & PSW_ADDR_INSN); -} #endif +} /* * The architecture-independent dump_stack generator @@ -223,6 +223,24 @@ void show_registers(struct pt_regs *regs) show_code(regs); } +void show_regs(struct pt_regs *regs) +{ + print_modules(); + printk("CPU: %d %s %s %.*s\n", + task_thread_info(current)->cpu, print_tainted(), + init_utsname()->release, + (int)strcspn(init_utsname()->version, " "), + init_utsname()->version); + printk("Process %s (pid: %d, task: %p, ksp: %p)\n", + current->comm, current->pid, current, + (void *) current->thread.ksp); + show_registers(regs); + /* Show stack backtrace if pt_regs is from kernel mode */ + if (!(regs->psw.mask & PSW_MASK_PSTATE)) + show_trace(NULL, (unsigned long *) regs->gprs[15]); + show_last_breaking_event(regs); +} + /* This is called from fs/proc/array.c */ void task_show_regs(struct seq_file *m, struct task_struct *task) { |