10 files changed, 59 insertions, 176 deletions

diff --git a/arch/m32r/kernel/entry.S b/arch/m32r/kernel/entry.S
index 612d35b082a6..403869833b98 100644
--- a/arch/m32r/kernel/entry.S
+++ b/arch/m32r/kernel/entry.S
@@ -118,6 +118,13 @@
 #define resume_kernel           restore_all
 #endif
 
+/* how to get the thread information struct from ASM */
+#define GET_THREAD_INFO(reg)    GET_THREAD_INFO reg
+        .macro GET_THREAD_INFO reg
+        ldi     \reg, #-THREAD_SIZE
+        and     \reg, sp
+        .endm
+
 ENTRY(ret_from_fork)
         pop     r0
         bl      schedule_tail
diff --git a/arch/m32r/kernel/head.S b/arch/m32r/kernel/head.S
index 0a7194439eb1..a46652dd83e6 100644
--- a/arch/m32r/kernel/head.S
+++ b/arch/m32r/kernel/head.S
@@ -268,13 +268,13 @@ ENTRY(empty_zero_page)
 /*------------------------------------------------------------------------
  * Stack area
  */
-        .section .spi
+        .section .init.data, "aw"
         ALIGN
         .global spi_stack_top
         .zero   1024
 spi_stack_top:
 
-        .section .spu
+        .section .init.data, "aw"
         ALIGN
         .global spu_stack_top
         .zero   1024
diff --git a/arch/m32r/kernel/init_task.c b/arch/m32r/kernel/init_task.c
index fce57e5d3f91..6c42d5f8df50 100644
--- a/arch/m32r/kernel/init_task.c
+++ b/arch/m32r/kernel/init_task.c
@@ -20,9 +20,8 @@ static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  * way process stacks are handled. This is done by having a special
  * "init_task" linker map entry..
  */
-union thread_union init_thread_union
-        __attribute__((__section__(".data.init_task"))) =
-                { INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union __init_task_data =
+        { INIT_THREAD_INFO(init_task) };
 
 /*
  * Initial task structure.
diff --git a/arch/m32r/kernel/m32r_ksyms.c b/arch/m32r/kernel/m32r_ksyms.c
index 22624b51d4d3..700570747a90 100644
--- a/arch/m32r/kernel/m32r_ksyms.c
+++ b/arch/m32r/kernel/m32r_ksyms.c
@@ -23,12 +23,6 @@ EXPORT_SYMBOL(__ioremap);
 EXPORT_SYMBOL(iounmap);
 EXPORT_SYMBOL(kernel_thread);
 
-/* Networking helper routines. */
-/* Delay loops */
-EXPORT_SYMBOL(__udelay);
-EXPORT_SYMBOL(__delay);
-EXPORT_SYMBOL(__const_udelay);
-
 EXPORT_SYMBOL(strncpy_from_user);
 EXPORT_SYMBOL(__strncpy_from_user);
 EXPORT_SYMBOL(clear_user);
diff --git a/arch/m32r/kernel/ptrace.c b/arch/m32r/kernel/ptrace.c
index 98b8feb12ed8..98682bba0ed9 100644
--- a/arch/m32r/kernel/ptrace.c
+++ b/arch/m32r/kernel/ptrace.c
@@ -77,7 +77,7 @@ static int ptrace_read_user(struct task_struct *tsk, unsigned long off,
         struct user * dummy = NULL;
 #endif
 
-        if ((off & 3) || (off < 0) || (off > sizeof(struct user) - 3))
+        if ((off & 3) || off > sizeof(struct user) - 3)
                 return -EIO;
 
         off >>= 2;
@@ -139,8 +139,7 @@ static int ptrace_write_user(struct task_struct *tsk, unsigned long off,
         struct user * dummy = NULL;
 #endif
 
-        if ((off & 3) || off < 0 ||
-            off > sizeof(struct user) - 3)
+        if ((off & 3) || off > sizeof(struct user) - 3)
                 return -EIO;
 
         off >>= 2;
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index 929e5c9d3ad9..31cef20b2996 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -17,6 +17,7 @@
 
 #include <linux/irq.h>
 #include <linux/interrupt.h>
+#include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
@@ -85,7 +86,7 @@ void smp_ipi_timer_interrupt(struct pt_regs *);
 void smp_local_timer_interrupt(void);
 
 static void send_IPI_allbutself(int, int);
-static void send_IPI_mask(cpumask_t, int, int);
+static void send_IPI_mask(const struct cpumask *, int, int);
 unsigned long send_IPI_mask_phys(cpumask_t, int, int);
 
 /*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/
@@ -113,7 +114,7 @@ unsigned long send_IPI_mask_phys(cpumask_t, int, int);
 void smp_send_reschedule(int cpu_id)
 {
         WARN_ON(cpu_is_offline(cpu_id));
-        send_IPI_mask(cpumask_of_cpu(cpu_id), RESCHEDULE_IPI, 1);
+        send_IPI_mask(cpumask_of(cpu_id), RESCHEDULE_IPI, 1);
 }
 
 /*==========================================================================*
@@ -168,7 +169,7 @@ void smp_flush_cache_all(void)
         spin_lock(&flushcache_lock);
         mask=cpus_addr(cpumask);
         atomic_set_mask(*mask, (atomic_t *)&flushcache_cpumask);
-        send_IPI_mask(cpumask, INVALIDATE_CACHE_IPI, 0);
+        send_IPI_mask(&cpumask, INVALIDATE_CACHE_IPI, 0);
         _flush_cache_copyback_all();
         while (flushcache_cpumask)
                 mb();
@@ -264,7 +265,7 @@ void smp_flush_tlb_mm(struct mm_struct *mm)
         preempt_disable();
         cpu_id = smp_processor_id();
         mmc = &mm->context[cpu_id];
-        cpu_mask = mm->cpu_vm_mask;
+        cpu_mask = *mm_cpumask(mm);
         cpu_clear(cpu_id, cpu_mask);
 
         if (*mmc != NO_CONTEXT) {
@@ -273,7 +274,7 @@ void smp_flush_tlb_mm(struct mm_struct *mm)
                 if (mm == current->mm)
                         activate_context(mm);
                 else
-                        cpu_clear(cpu_id, mm->cpu_vm_mask);
+                        cpumask_clear_cpu(cpu_id, mm_cpumask(mm));
                 local_irq_restore(flags);
         }
         if (!cpus_empty(cpu_mask))
@@ -334,7 +335,7 @@ void smp_flush_tlb_page(struct vm_area_struct *vma, unsigned long va)
         preempt_disable();
         cpu_id = smp_processor_id();
         mmc = &mm->context[cpu_id];
-        cpu_mask = mm->cpu_vm_mask;
+        cpu_mask = *mm_cpumask(mm);
         cpu_clear(cpu_id, cpu_mask);
 
 #ifdef DEBUG_SMP
@@ -424,7 +425,7 @@ static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
          * We have to send the IPI only to
          * CPUs affected.
          */
-        send_IPI_mask(cpumask, INVALIDATE_TLB_IPI, 0);
+        send_IPI_mask(&cpumask, INVALIDATE_TLB_IPI, 0);
 
         while (!cpus_empty(flush_cpumask)) {
                 /* nothing. lockup detection does not belong here */
@@ -469,7 +470,7 @@ void smp_invalidate_interrupt(void)
                 if (flush_mm == current->active_mm)
                         activate_context(flush_mm);
                 else
-                        cpu_clear(cpu_id, flush_mm->cpu_vm_mask);
+                        cpumask_clear_cpu(cpu_id, mm_cpumask(flush_mm));
         } else {
                 unsigned long va = flush_va;
 
@@ -546,14 +547,14 @@ static void stop_this_cpu(void *dummy)
         for ( ; ; );
 }
 
-void arch_send_call_function_ipi(cpumask_t mask)
+void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 {
         send_IPI_mask(mask, CALL_FUNCTION_IPI, 0);
 }
 
 void arch_send_call_function_single_ipi(int cpu)
 {
-        send_IPI_mask(cpumask_of_cpu(cpu), CALL_FUNC_SINGLE_IPI, 0);
+        send_IPI_mask(cpumask_of(cpu), CALL_FUNC_SINGLE_IPI, 0);
 }
 
 /*==========================================================================*
@@ -729,7 +730,7 @@ static void send_IPI_allbutself(int ipi_num, int try)
         cpumask = cpu_online_map;
         cpu_clear(smp_processor_id(), cpumask);
 
-        send_IPI_mask(cpumask, ipi_num, try);
+        send_IPI_mask(&cpumask, ipi_num, try);
 }
 
 /*==========================================================================*
@@ -752,7 +753,7 @@ static void send_IPI_allbutself(int ipi_num, int try)
  * ---------- --- --------------------------------------------------------
  *
  *==========================================================================*/
-static void send_IPI_mask(cpumask_t cpumask, int ipi_num, int try)
+static void send_IPI_mask(const struct cpumask *cpumask, int ipi_num, int try)
 {
         cpumask_t physid_mask, tmp;
         int cpu_id, phys_id;
@@ -761,11 +762,11 @@ static void send_IPI_mask(cpumask_t cpumask, int ipi_num, int try)
         if (num_cpus <= 1)      /* NO MP */
                 return;
 
-        cpus_and(tmp, cpumask, cpu_online_map);
-        BUG_ON(!cpus_equal(cpumask, tmp));
+        cpumask_and(&tmp, cpumask, cpu_online_mask);
+        BUG_ON(!cpumask_equal(cpumask, &tmp));
 
         physid_mask = CPU_MASK_NONE;
-        for_each_cpu_mask(cpu_id, cpumask){
+        for_each_cpu(cpu_id, cpumask) {
                 if ((phys_id = cpu_to_physid(cpu_id)) != -1)
                         cpu_set(phys_id, physid_mask);
         }
@@ -805,7 +806,7 @@ unsigned long send_IPI_mask_phys(cpumask_t physid_mask, int ipi_num,
 
         if (mask & ~physids_coerce(phys_cpu_present_map))
                 BUG();
-        if (ipi_num >= NR_IPIS)
+        if (ipi_num >= NR_IPIS || ipi_num < 0)
                 BUG();
 
         mask <<= IPI_SHIFT;
diff --git a/arch/m32r/kernel/smpboot.c b/arch/m32r/kernel/smpboot.c
index 2547d6c4a827..e034844cfc0d 100644
--- a/arch/m32r/kernel/smpboot.c
+++ b/arch/m32r/kernel/smpboot.c
@@ -178,7 +178,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         for (phys_id = 0 ; phys_id < nr_cpu ; phys_id++)
                 physid_set(phys_id, phys_cpu_present_map);
 #ifndef CONFIG_HOTPLUG_CPU
-        cpu_present_map = cpu_possible_map;
+        init_cpu_present(&cpu_possible_map);
 #endif
 
         show_mp_info(nr_cpu);
@@ -213,7 +213,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
                 if (!physid_isset(phys_id, phys_cpu_present_map))
                         continue;
 
-                if ((max_cpus >= 0) && (max_cpus <= cpucount + 1))
+                if (max_cpus <= cpucount + 1)
                         continue;
 
                 do_boot_cpu(phys_id);
diff --git a/arch/m32r/kernel/time.c b/arch/m32r/kernel/time.c
index cada3ba4b990..9cedcef11575 100644
--- a/arch/m32r/kernel/time.c
+++ b/arch/m32r/kernel/time.c
@@ -33,6 +33,15 @@
 
 #include <asm/hw_irq.h>
 
+#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE)
+/* this needs a better home */
+DEFINE_SPINLOCK(rtc_lock);
+
+#ifdef CONFIG_RTC_DRV_CMOS_MODULE
+EXPORT_SYMBOL(rtc_lock);
+#endif
+#endif  /* pc-style 'CMOS' RTC support */
+
 #ifdef CONFIG_SMP
 extern void smp_local_timer_interrupt(void);
 #endif
@@ -48,7 +57,7 @@ extern void smp_local_timer_interrupt(void);
 
 static unsigned long latch;
 
-static unsigned long do_gettimeoffset(void)
+u32 arch_gettimeoffset(void)
 {
         unsigned long  elapsed_time = 0;  /* [us] */
 
@@ -66,7 +75,7 @@ static unsigned long do_gettimeoffset(void)
                 count = 0;
 
         count = (latch - count) * TICK_SIZE;
-        elapsed_time = (count + latch / 2) / latch;
+        elapsed_time = DIV_ROUND_CLOSEST(count, latch);
         /* NOTE: LATCH is equal to the "interval" value (= reload count). */
 
 #else /* CONFIG_SMP */
@@ -84,7 +93,7 @@ static unsigned long do_gettimeoffset(void)
         p_count = count;
 
         count = (latch - count) * TICK_SIZE;
-        elapsed_time = (count + latch / 2) / latch;
+        elapsed_time = DIV_ROUND_CLOSEST(count, latch);
         /* NOTE: LATCH is equal to the "interval" value (= reload count). */
 #endif /* CONFIG_SMP */
 #elif defined(CONFIG_CHIP_M32310)
@@ -93,78 +102,9 @@ static unsigned long do_gettimeoffset(void)
 #error no chip configuration
 #endif
 
-        return elapsed_time;
-}
-
-/*
- * This version of gettimeofday has near microsecond resolution.
- */
-void do_gettimeofday(struct timeval *tv)
-{
-        unsigned long seq;
-        unsigned long usec, sec;
-        unsigned long max_ntp_tick = tick_usec - tickadj;
-
-        do {
-                seq = read_seqbegin(&xtime_lock);
-
-                usec = do_gettimeoffset();
-
-                /*
-                 * If time_adjust is negative then NTP is slowing the clock
-                 * so make sure not to go into next possible interval.
-                 * Better to lose some accuracy than have time go backwards..
-                 */
-                if (unlikely(time_adjust < 0))
-                        usec = min(usec, max_ntp_tick);
-
-                sec = xtime.tv_sec;
-                usec += (xtime.tv_nsec / 1000);
-        } while (read_seqretry(&xtime_lock, seq));
-
-        while (usec >= 1000000) {
-                usec -= 1000000;
-                sec++;
-        }
-
-        tv->tv_sec = sec;
-        tv->tv_usec = usec;
-}
-
-EXPORT_SYMBOL(do_gettimeofday);
-
-int do_settimeofday(struct timespec *tv)
-{
-        time_t wtm_sec, sec = tv->tv_sec;
-        long wtm_nsec, nsec = tv->tv_nsec;
-
-        if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
-                return -EINVAL;
-
-        write_seqlock_irq(&xtime_lock);
-        /*
-         * This is revolting. We need to set "xtime" correctly. However, the
-         * value in this location is the value at the most recent update of
-         * wall time.  Discover what correction gettimeofday() would have
-         * made, and then undo it!
-         */
-        nsec -= do_gettimeoffset() * NSEC_PER_USEC;
-
-        wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
-        wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
-        set_normalized_timespec(&xtime, sec, nsec);
-        set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
-        ntp_clear();
-        write_sequnlock_irq(&xtime_lock);
-        clock_was_set();
-
-        return 0;
+        return elapsed_time * 1000;
 }
 
-EXPORT_SYMBOL(do_settimeofday);
-
 /*
  * In order to set the CMOS clock precisely, set_rtc_mmss has to be
  * called 500 ms after the second nowtime has started, because when
@@ -192,6 +132,7 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
 #ifndef CONFIG_SMP
         profile_tick(CPU_PROFILING);
 #endif
+        /* XXX FIXME. Uh, the xtime_lock should be held here, no? */
         do_timer(1);
 
 #ifndef CONFIG_SMP
@@ -270,7 +211,7 @@ void __init time_init(void)
 
                 bus_clock = boot_cpu_data.bus_clock;
                 divide = boot_cpu_data.timer_divide;
-                latch = (bus_clock/divide + HZ / 2) / HZ;
+                latch = DIV_ROUND_CLOSEST(bus_clock/divide, HZ);
 
                 printk("Timer start : latch = %ld\n", latch);
 
diff --git a/arch/m32r/kernel/traps.c b/arch/m32r/kernel/traps.c
index 03b14e55cd89..fbd109031df3 100644
--- a/arch/m32r/kernel/traps.c
+++ b/arch/m32r/kernel/traps.c
@@ -104,8 +104,8 @@ static void set_eit_vector_entries(void)
         eit_vector[186] = (unsigned long)smp_call_function_interrupt;
         eit_vector[187] = (unsigned long)smp_ipi_timer_interrupt;
         eit_vector[188] = (unsigned long)smp_flush_cache_all_interrupt;
-        eit_vector[189] = (unsigned long)smp_call_function_single_interrupt;
-        eit_vector[190] = 0;
+        eit_vector[189] = 0;    /* CPU_BOOT_IPI */
+        eit_vector[190] = (unsigned long)smp_call_function_single_interrupt;
         eit_vector[191] = 0;
 #endif
         _flush_cache_copyback_all();
diff --git a/arch/m32r/kernel/vmlinux.lds.S b/arch/m32r/kernel/vmlinux.lds.S
index de5e21cca6a5..7da94eaa082b 100644
--- a/arch/m32r/kernel/vmlinux.lds.S
+++ b/arch/m32r/kernel/vmlinux.lds.S
@@ -4,6 +4,7 @@
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/addrspace.h>
 #include <asm/page.h>
+#include <asm/thread_info.h>
 
 OUTPUT_ARCH(m32r)
 #if defined(__LITTLE_ENDIAN__)
@@ -40,83 +41,24 @@ SECTIONS
 #endif
   _etext = .;                   /* End of text section */
 
-  . = ALIGN(16);                /* Exception table */
-  __start___ex_table = .;
-  __ex_table : { *(__ex_table) }
-  __stop___ex_table = .;
+  EXCEPTION_TABLE(16)
+  NOTES
 
   RODATA
-
-  /* writeable */
-  .data : {                     /* Data */
-        *(.spu)
-        *(.spi)
-        DATA_DATA
-        CONSTRUCTORS
-        }
-
-  . = ALIGN(4096);
-  __nosave_begin = .;
-  .data_nosave : { *(.data.nosave) }
-  . = ALIGN(4096);
-  __nosave_end = .;
-
-  . = ALIGN(32);
-  .data.cacheline_aligned : { *(.data.cacheline_aligned) }
-
+  RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
   _edata = .;                   /* End of data section */
 
-  . = ALIGN(8192);              /* init_task */
-  .data.init_task : { *(.data.init_task) }
-
   /* will be freed after init */
-  . = ALIGN(4096);              /* Init code and data */
+  . = ALIGN(PAGE_SIZE);         /* Init code and data */
   __init_begin = .;
-  .init.text : {
-        _sinittext = .;
-        INIT_TEXT
-        _einittext = .;
-  }
-  .init.data : { INIT_DATA }
-  . = ALIGN(16);
-  __setup_start = .;
-  .init.setup : { *(.init.setup) }
-  __setup_end = .;
-  __initcall_start = .;
-  .initcall.init : {
-        INITCALLS
-  }
-  __initcall_end = .;
-  __con_initcall_start = .;
-  .con_initcall.init : { *(.con_initcall.init) }
-  __con_initcall_end = .;
-  SECURITY_INIT
-  . = ALIGN(4);
-  __alt_instructions = .;
-  .altinstructions : { *(.altinstructions) }
-  __alt_instructions_end = .;
-  .altinstr_replacement : { *(.altinstr_replacement) }
-  /* .exit.text is discard at runtime, not link time, to deal with references
-     from .altinstructions and .eh_frame */
-  .exit.text : { EXIT_TEXT }
-  .exit.data : { EXIT_DATA }
-
-#ifdef CONFIG_BLK_DEV_INITRD
-  . = ALIGN(4096);
-  __initramfs_start = .;
-  .init.ramfs : { *(.init.ramfs) }
-  __initramfs_end = .;
-#endif
-
-  PERCPU(4096)
-  . = ALIGN(4096);
+  INIT_TEXT_SECTION(PAGE_SIZE)
+  INIT_DATA_SECTION(16)
+  PERCPU(PAGE_SIZE)
+  . = ALIGN(PAGE_SIZE);
   __init_end = .;
   /* freed after init ends here */
 
-  __bss_start = .;              /* BSS */
-  .bss : { *(.bss) }
-  . = ALIGN(4);
-  __bss_stop = .;
+  BSS_SECTION(0, 0, 4)
 
   _end = . ;