Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (29 commits)
  [S390] cpu hotplug: fix external interrupt subclass mask handling
  [S390] oprofile: dont access lowcore
  [S390] oprofile: add missing irq stats counter
  [S390] Ignore sendmmsg system call note wired up warning
  [S390] s390,oprofile: fix compile error for !CONFIG_SMP
  [S390] s390,oprofile: fix alert counter increment
  [S390] Remove unused includes in process.c
  [S390] get CPC image name
  [S390] sclp: event buffer dissection
  [S390] chsc: process channel-path-availability information
  [S390] refactor page table functions for better pgste support
  [S390] merge page_test_dirty and page_clear_dirty
  [S390] qdio: prevent compile warning
  [S390] sclp: remove unnecessary sendmask check
  [S390] convert old cpumask API into new one
  [S390] pfault: cleanup code
  [S390] pfault: cpu hotplug vs missing completion interrupts
  [S390] smp: add __noreturn attribute to cpu_die()
  [S390] percpu: implement arch specific irqsafe_cpu_ops
  [S390] vdso: disable gcov profiling
  ...

11 files changed, 39 insertions, 74 deletions

diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index fe03c140002a..edfbd17d7082 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -124,13 +124,11 @@ int main(void)
         DEFINE(__LC_LAST_UPDATE_TIMER, offsetof(struct _lowcore, last_update_timer));
         DEFINE(__LC_LAST_UPDATE_CLOCK, offsetof(struct _lowcore, last_update_clock));
         DEFINE(__LC_CURRENT, offsetof(struct _lowcore, current_task));
+        DEFINE(__LC_CURRENT_PID, offsetof(struct _lowcore, current_pid));
         DEFINE(__LC_THREAD_INFO, offsetof(struct _lowcore, thread_info));
         DEFINE(__LC_KERNEL_STACK, offsetof(struct _lowcore, kernel_stack));
         DEFINE(__LC_ASYNC_STACK, offsetof(struct _lowcore, async_stack));
         DEFINE(__LC_PANIC_STACK, offsetof(struct _lowcore, panic_stack));
-        DEFINE(__LC_KERNEL_ASCE, offsetof(struct _lowcore, kernel_asce));
-        DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce));
-        DEFINE(__LC_USER_EXEC_ASCE, offsetof(struct _lowcore, user_exec_asce));
         DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock));
         DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock));
         DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags));
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 1b67fc6ebdc2..0476174dfff5 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -212,6 +212,7 @@ __switch_to:
         lctl    %c4,%c4,__TASK_pid(%r3)         # load pid to control reg. 4
         lm      %r6,%r15,__SF_GPRS(%r15)        # load gprs of next task
         st      %r3,__LC_CURRENT                # store task struct of next
+        mvc     __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next
         st      %r5,__LC_THREAD_INFO            # store thread info of next
         ahi     %r5,STACK_SIZE                  # end of kernel stack of next
         st      %r5,__LC_KERNEL_STACK           # store end of kernel stack
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 9fd864563499..d61967e2eab0 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -220,6 +220,7 @@ __switch_to:
         lctl    %c4,%c4,__TASK_pid(%r3)         # load pid to control reg. 4
         lmg     %r6,%r15,__SF_GPRS(%r15)        # load gprs of next task
         stg     %r3,__LC_CURRENT                # store task struct of next
+        mvc     __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next
         stg     %r5,__LC_THREAD_INFO            # store thread info of next
         aghi    %r5,STACK_SIZE                  # end of kernel stack of next
         stg     %r5,__LC_KERNEL_STACK           # store end of kernel stack
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index ea5099c9709c..e204f9597aaf 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -32,6 +32,7 @@ static const struct irq_class intrclass_names[] = {
         {.name = "VRT", .desc = "[EXT] Virtio" },
         {.name = "SCP", .desc = "[EXT] Service Call" },
         {.name = "IUC", .desc = "[EXT] IUCV" },
+        {.name = "CPM", .desc = "[EXT] CPU Measurement" },
         {.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt" },
         {.name = "QDI", .desc = "[I/O] QDIO Interrupt" },
         {.name = "DAS", .desc = "[I/O] DASD" },
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index a895e69379f7..541a7509faeb 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -9,41 +9,26 @@
 
 #include <linux/compiler.h>
 #include <linux/cpu.h>
-#include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
-#include <linux/fs.h>
 #include <linux/smp.h>
-#include <linux/stddef.h>
 #include <linux/slab.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/vmalloc.h>
-#include <linux/user.h>
 #include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/notifier.h>
 #include <linux/tick.h>
-#include <linux/elfcore.h>
-#include <linux/kernel_stat.h>
 #include <linux/personality.h>
 #include <linux/syscalls.h>
 #include <linux/compat.h>
 #include <linux/kprobes.h>
 #include <linux/random.h>
-#include <asm/compat.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
+#include <linux/module.h>
 #include <asm/system.h>
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/irq.h>
 #include <asm/timer.h>
 #include <asm/nmi.h>
+#include <asm/compat.h>
 #include <asm/smp.h>
 #include "entry.h"
 
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index f5434d1ecb31..0c35dee10b00 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -305,8 +305,7 @@ static int set_amode_and_uaccess(unsigned long user_amode,
  */
 static int __init early_parse_switch_amode(char *p)
 {
-        if (user_mode != SECONDARY_SPACE_MODE)
-                user_mode = PRIMARY_SPACE_MODE;
+        user_mode = PRIMARY_SPACE_MODE;
         return 0;
 }
 early_param("switch_amode", early_parse_switch_amode);
@@ -315,10 +314,6 @@ static int __init early_parse_user_mode(char *p)
 {
         if (p && strcmp(p, "primary") == 0)
                 user_mode = PRIMARY_SPACE_MODE;
-#ifdef CONFIG_S390_EXEC_PROTECT
-        else if (p && strcmp(p, "secondary") == 0)
-                user_mode = SECONDARY_SPACE_MODE;
-#endif
         else if (!p || strcmp(p, "home") == 0)
                 user_mode = HOME_SPACE_MODE;
         else
@@ -327,31 +322,9 @@ static int __init early_parse_user_mode(char *p)
 }
 early_param("user_mode", early_parse_user_mode);
 
-#ifdef CONFIG_S390_EXEC_PROTECT
-/*
- * Enable execute protection?
- */
-static int __init early_parse_noexec(char *p)
-{
-        if (!strncmp(p, "off", 3))
-                return 0;
-        user_mode = SECONDARY_SPACE_MODE;
-        return 0;
-}
-early_param("noexec", early_parse_noexec);
-#endif /* CONFIG_S390_EXEC_PROTECT */
-
 static void setup_addressing_mode(void)
 {
-        if (user_mode == SECONDARY_SPACE_MODE) {
-                if (set_amode_and_uaccess(PSW_ASC_SECONDARY,
-                                          PSW32_ASC_SECONDARY))
-                        pr_info("Execute protection active, "
-                                "mvcos available\n");
-                else
-                        pr_info("Execute protection active, "
-                                "mvcos not available\n");
-        } else if (user_mode == PRIMARY_SPACE_MODE) {
+        if (user_mode == PRIMARY_SPACE_MODE) {
                 if (set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY))
                         pr_info("Address spaces switched, "
                                 "mvcos available\n");
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 63c7d9ff220d..f8e85ecbc459 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -335,7 +335,7 @@ static int smp_rescan_cpus_sigp(cpumask_t avail)
                 smp_cpu_polarization[logical_cpu] = POLARIZATION_UNKNWN;
                 if (!cpu_stopped(logical_cpu))
                         continue;
-                cpu_set(logical_cpu, cpu_present_map);
+                set_cpu_present(logical_cpu, true);
                 smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED;
                 logical_cpu = cpumask_next(logical_cpu, &avail);
                 if (logical_cpu >= nr_cpu_ids)
@@ -367,7 +367,7 @@ static int smp_rescan_cpus_sclp(cpumask_t avail)
                         continue;
                 __cpu_logical_map[logical_cpu] = cpu_id;
                 smp_cpu_polarization[logical_cpu] = POLARIZATION_UNKNWN;
-                cpu_set(logical_cpu, cpu_present_map);
+                set_cpu_present(logical_cpu, true);
                 if (cpu >= info->configured)
                         smp_cpu_state[logical_cpu] = CPU_STATE_STANDBY;
                 else
@@ -385,7 +385,7 @@ static int __smp_rescan_cpus(void)
 {
         cpumask_t avail;
 
-        cpus_xor(avail, cpu_possible_map, cpu_present_map);
+        cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
         if (smp_use_sigp_detection)
                 return smp_rescan_cpus_sigp(avail);
         else
@@ -467,7 +467,7 @@ int __cpuinit start_secondary(void *cpuvoid)
         notify_cpu_starting(smp_processor_id());
         /* Mark this cpu as online */
         ipi_call_lock();
-        cpu_set(smp_processor_id(), cpu_online_map);
+        set_cpu_online(smp_processor_id(), true);
         ipi_call_unlock();
         /* Switch on interrupts */
         local_irq_enable();
@@ -644,7 +644,7 @@ int __cpu_disable(void)
         struct ec_creg_mask_parms cr_parms;
         int cpu = smp_processor_id();
 
-        cpu_clear(cpu, cpu_online_map);
+        set_cpu_online(cpu, false);
 
         /* Disable pfault pseudo page faults on this cpu. */
         pfault_fini();
@@ -654,8 +654,8 @@ int __cpu_disable(void)
 
         /* disable all external interrupts */
         cr_parms.orvals[0] = 0;
-        cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 12 |
-                                1 << 11 | 1 << 10 | 1 <<  6 | 1 <<  4);
+        cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 11 |
+                                1 << 10 | 1 <<  9 | 1 <<  6 | 1 <<  4);
         /* disable all I/O interrupts */
         cr_parms.orvals[6] = 0;
         cr_parms.andvals[6] = ~(1 << 31 | 1 << 30 | 1 << 29 | 1 << 28 |
@@ -681,7 +681,7 @@ void __cpu_die(unsigned int cpu)
         atomic_dec(&init_mm.context.attach_count);
 }
 
-void cpu_die(void)
+void __noreturn cpu_die(void)
 {
         idle_task_exit();
         while (sigp(smp_processor_id(), sigp_stop) == sigp_busy)
@@ -738,8 +738,8 @@ void __init smp_prepare_boot_cpu(void)
         BUG_ON(smp_processor_id() != 0);
 
         current_thread_info()->cpu = 0;
-        cpu_set(0, cpu_present_map);
-        cpu_set(0, cpu_online_map);
+        set_cpu_present(0, true);
+        set_cpu_online(0, true);
         S390_lowcore.percpu_offset = __per_cpu_offset[0];
         current_set[0] = current;
         smp_cpu_state[0] = CPU_STATE_CONFIGURED;
@@ -1016,21 +1016,21 @@ int __ref smp_rescan_cpus(void)
 
         get_online_cpus();
         mutex_lock(&smp_cpu_state_mutex);
-        newcpus = cpu_present_map;
+        cpumask_copy(&newcpus, cpu_present_mask);
         rc = __smp_rescan_cpus();
         if (rc)
                 goto out;
-        cpus_andnot(newcpus, cpu_present_map, newcpus);
-        for_each_cpu_mask(cpu, newcpus) {
+        cpumask_andnot(&newcpus, cpu_present_mask, &newcpus);
+        for_each_cpu(cpu, &newcpus) {
                 rc = smp_add_present_cpu(cpu);
                 if (rc)
-                        cpu_clear(cpu, cpu_present_map);
+                        set_cpu_present(cpu, false);
         }
         rc = 0;
 out:
         mutex_unlock(&smp_cpu_state_mutex);
         put_online_cpus();
-        if (!cpus_empty(newcpus))
+        if (!cpumask_empty(&newcpus))
                 topology_schedule_update();
         return rc;
 }
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 87be655557aa..a59557f1fb5f 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -810,7 +810,7 @@ static int etr_sync_clock_stop(struct etr_aib *aib, int port)
         etr_sync.etr_port = port;
         get_online_cpus();
         atomic_set(&etr_sync.cpus, num_online_cpus() - 1);
-        rc = stop_machine(etr_sync_clock, &etr_sync, &cpu_online_map);
+        rc = stop_machine(etr_sync_clock, &etr_sync, cpu_online_mask);
         put_online_cpus();
         return rc;
 }
@@ -1579,7 +1579,7 @@ static void stp_work_fn(struct work_struct *work)
         memset(&stp_sync, 0, sizeof(stp_sync));
         get_online_cpus();
         atomic_set(&stp_sync.cpus, num_online_cpus() - 1);
-        stop_machine(stp_sync_clock, &stp_sync, &cpu_online_map);
+        stop_machine(stp_sync_clock, &stp_sync, cpu_online_mask);
         put_online_cpus();
 
         if (!check_sync_clock())
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 94b06c31fc8a..2eafb8c7a746 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -52,20 +52,20 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
 {
         cpumask_t mask;
 
-        cpus_clear(mask);
+        cpumask_clear(&mask);
         if (!topology_enabled || !MACHINE_HAS_TOPOLOGY) {
                 cpumask_copy(&mask, cpumask_of(cpu));
                 return mask;
         }
         while (info) {
-                if (cpu_isset(cpu, info->mask)) {
+                if (cpumask_test_cpu(cpu, &info->mask)) {
                         mask = info->mask;
                         break;
                 }
                 info = info->next;
         }
-        if (cpus_empty(mask))
-                mask = cpumask_of_cpu(cpu);
+        if (cpumask_empty(&mask))
+                cpumask_copy(&mask, cpumask_of(cpu));
         return mask;
 }
 
@@ -85,10 +85,10 @@ static void add_cpus_to_mask(struct topology_cpu *tl_cpu,
                         if (cpu_logical_map(lcpu) != rcpu)
                                 continue;
 #ifdef CONFIG_SCHED_BOOK
-                        cpu_set(lcpu, book->mask);
+                        cpumask_set_cpu(lcpu, &book->mask);
                         cpu_book_id[lcpu] = book->id;
 #endif
-                        cpu_set(lcpu, core->mask);
+                        cpumask_set_cpu(lcpu, &core->mask);
                         cpu_core_id[lcpu] = core->id;
                         smp_cpu_polarization[lcpu] = tl_cpu->pp;
                 }
@@ -101,13 +101,13 @@ static void clear_masks(void)
 
         info = &core_info;
         while (info) {
-                cpus_clear(info->mask);
+                cpumask_clear(&info->mask);
                 info = info->next;
         }
 #ifdef CONFIG_SCHED_BOOK
         info = &book_info;
         while (info) {
-                cpus_clear(info->mask);
+                cpumask_clear(&info->mask);
                 info = info->next;
         }
 #endif
diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile
index d13e8755a8cc..8ad2b34ad151 100644
--- a/arch/s390/kernel/vdso32/Makefile
+++ b/arch/s390/kernel/vdso32/Makefile
@@ -22,6 +22,9 @@ obj-y += vdso32_wrapper.o
 extra-y += vdso32.lds
 CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
 
+# Disable gcov profiling for VDSO code
+GCOV_PROFILE := n
+
 # Force dependency (incbin is bad)
 $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
 
diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile
index 449352dda9cd..2a8ddfd12a5b 100644
--- a/arch/s390/kernel/vdso64/Makefile
+++ b/arch/s390/kernel/vdso64/Makefile
@@ -22,6 +22,9 @@ obj-y += vdso64_wrapper.o
 extra-y += vdso64.lds
 CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
 
+# Disable gcov profiling for VDSO code
+GCOV_PROFILE := n
+
 # Force dependency (incbin is bad)
 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so