9 files changed, 215 insertions, 441 deletions

diff --git a/arch/cris/arch-v32/kernel/entry.S b/arch/cris/arch-v32/kernel/entry.S
index c3ea4694fba..2f19ac6217a 100644
--- a/arch/cris/arch-v32/kernel/entry.S
+++ b/arch/cris/arch-v32/kernel/entry.S
@@ -31,6 +31,7 @@
 	.globl system_call
 	.globl ret_from_intr
 	.globl ret_from_fork
+	.globl ret_from_kernel_thread
 	.globl resume
 	.globl multiple_interrupt
 	.globl nmi_interrupt
@@ -84,6 +85,18 @@ ret_from_fork:
 	nop
 	.size	ret_from_fork, . - ret_from_fork
 
+	.type	ret_from_kernel_thread,@function
+ret_from_kernel_thread:
+	jsr schedule_tail
+	nop
+	move.d	$r2, $r10
+	jsr	$r1
+	nop
+	moveq	0, $r9			; no syscall restarts, TYVM...
+	ba  ret_from_sys_call
+	nop
+	.size	ret_from_kernel_thread, . - ret_from_kernel_thread
+
 	.type	ret_from_intr,@function
 ret_from_intr:
 	;; Check for resched if preemptive kernel, or if we're going back to
@@ -411,7 +424,7 @@ nmi_interrupt:
 	bpl     1f
 	nop
 	jsr	handle_watchdog_bite	; In time.c.
-        move.d	$sp, $r10		; Pointer to registers
+	move.d	$sp, $r10		; Pointer to registers
 1:	btstq	REG_BIT(intr_vect, r_nmi, ext), $r0
 	bpl     1f
 	nop
@@ -439,7 +452,7 @@ spurious_interrupt:
 	nop
 
 	;; This handles the case when multiple interrupts arrive at the same
-	;; time. Jump to the first set interrupt bit in a priotiry fashion. The
+	;; time. Jump to the first set interrupt bit in a priority fashion. The
 	;; hardware will call the unserved interrupts after the handler
 	;; finishes.
 	.type	multiple_interrupt, @function
@@ -531,15 +544,6 @@ _ugdb_handle_exception:
 	ba	do_sigtrap		; SIGTRAP the offending process.
 	move.d	[$sp+], $r0		; Restore R0 in delay slot.
 
-	.global kernel_execve
-	.type	kernel_execve,@function
-kernel_execve:
-	move.d __NR_execve, $r9
-	break 13
-	ret
-	nop
-	.size	kernel_execve, . - kernel_execve
-
 	.data
 
 	.section .rodata,"a"
@@ -881,13 +885,29 @@ sys_call_table:
 	.long sys_preadv
 	.long sys_pwritev
 	.long sys_setns			/* 335 */
-
-        /*
-         * NOTE!! This doesn't have to be exact - we just have
-         * to make sure we have _enough_ of the "sys_ni_syscall"
-         * entries. Don't panic if you notice that this hasn't
-         * been shrunk every time we add a new system call.
-         */
+	.long sys_name_to_handle_at
+	.long sys_open_by_handle_at
+	.long sys_rt_tgsigqueueinfo
+	.long sys_perf_event_open
+	.long sys_recvmmsg		/* 340 */
+	.long sys_accept4
+	.long sys_fanotify_init
+	.long sys_fanotify_mark
+	.long sys_prlimit64
+	.long sys_clock_adjtime		/* 345 */
+	.long sys_syncfs
+	.long sys_sendmmsg
+	.long sys_process_vm_readv
+	.long sys_process_vm_writev
+	.long sys_kcmp			/* 350 */
+	.long sys_finit_module
+
+	/*
+	 * NOTE!! This doesn't have to be exact - we just have
+	 * to make sure we have _enough_ of the "sys_ni_syscall"
+	 * entries. Don't panic if you notice that this hasn't
+	 * been shrunk every time we add a new system call.
+	 */
 
 	.rept NR_syscalls - (.-sys_call_table) / 4
 		.long sys_ni_syscall
diff --git a/arch/cris/arch-v32/kernel/fasttimer.c b/arch/cris/arch-v32/kernel/fasttimer.c
index ab1551ee43c..b130c2c5fdd 100644
--- a/arch/cris/arch-v32/kernel/fasttimer.c
+++ b/arch/cris/arch-v32/kernel/fasttimer.c
@@ -23,6 +23,7 @@
 #include <hwregs/timer_defs.h>
 #include <asm/fasttimer.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 
 /*
  * timer0 is running at 100MHz and generating jiffies timer ticks
@@ -463,195 +464,161 @@ void schedule_usleep(unsigned long us)
 }
 
 #ifdef CONFIG_PROC_FS
-static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
-                       ,int *eof, void *data_unused);
-static struct proc_dir_entry *fasttimer_proc_entry;
-#endif /* CONFIG_PROC_FS */
-
-#ifdef CONFIG_PROC_FS
-
 /* This value is very much based on testing */
 #define BIG_BUF_SIZE (500 + NUM_TIMER_STATS * 300)
 
-static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
-                       ,int *eof, void *data_unused)
+static int proc_fasttimer_show(struct seq_file *m, void *v)
 {
-  unsigned long flags;
-  int i = 0;
-  int num_to_show;
+	unsigned long flags;
+	int i = 0;
+	int num_to_show;
 	struct fasttime_t tv;
-  struct fast_timer *t, *nextt;
-  static char *bigbuf = NULL;
-  static unsigned long used;
-
-	if (!bigbuf) {
-		bigbuf = vmalloc(BIG_BUF_SIZE);
-		if (!bigbuf) {
-			used = 0;
-			if (buf)
-				buf[0] = '\0';
-			return 0;
-		}
-	}
-
-	if (!offset || !used) {
-    do_gettimeofday_fast(&tv);
-
-    used = 0;
-    used += sprintf(bigbuf + used, "Fast timers added:     %i\n",
-                    fast_timers_added);
-    used += sprintf(bigbuf + used, "Fast timers started:   %i\n",
-                    fast_timers_started);
-    used += sprintf(bigbuf + used, "Fast timer interrupts: %i\n",
-                    fast_timer_ints);
-    used += sprintf(bigbuf + used, "Fast timers expired:   %i\n",
-                    fast_timers_expired);
-    used += sprintf(bigbuf + used, "Fast timers deleted:   %i\n",
-                    fast_timers_deleted);
-    used += sprintf(bigbuf + used, "Fast timer running:    %s\n",
-                    fast_timer_running ? "yes" : "no");
-    used += sprintf(bigbuf + used, "Current time:          %lu.%06lu\n",
-			(unsigned long)tv.tv_jiff,
-                    (unsigned long)tv.tv_usec);
+	struct fast_timer *t, *nextt;
+
+	do_gettimeofday_fast(&tv);
+
+	seq_printf(m, "Fast timers added:     %i\n", fast_timers_added);
+	seq_printf(m, "Fast timers started:   %i\n", fast_timers_started);
+	seq_printf(m, "Fast timer interrupts: %i\n", fast_timer_ints);
+	seq_printf(m, "Fast timers expired:   %i\n", fast_timers_expired);
+	seq_printf(m, "Fast timers deleted:   %i\n", fast_timers_deleted);
+	seq_printf(m, "Fast timer running:    %s\n",
+		   fast_timer_running ? "yes" : "no");
+	seq_printf(m, "Current time:          %lu.%06lu\n",
+		   (unsigned long)tv.tv_jiff,
+		   (unsigned long)tv.tv_usec);
 #ifdef FAST_TIMER_SANITY_CHECKS
-    used += sprintf(bigbuf + used, "Sanity failed:         %i\n",
-                    sanity_failed);
+	seq_printf(m, "Sanity failed:         %i\n", sanity_failed);
 #endif
-    used += sprintf(bigbuf + used, "\n");
+	seq_putc(m, '\n');
 
 #ifdef DEBUG_LOG_INCLUDED
-    {
-      int end_i = debug_log_cnt;
-      i = 0;
-
-			if (debug_log_cnt_wrapped)
-        i = debug_log_cnt;
-
-      while ((i != end_i || (debug_log_cnt_wrapped && !used)) &&
-             used+100 < BIG_BUF_SIZE)
-      {
-        used += sprintf(bigbuf + used, debug_log_string[i],
-                        debug_log_value[i]);
-        i = (i+1) % DEBUG_LOG_MAX;
-      }
-    }
-    used += sprintf(bigbuf + used, "\n");
+	{
+		int end_i = debug_log_cnt;
+		i = 0;
+
+		if (debug_log_cnt_wrapped)
+			i = debug_log_cnt;
+
+		while ((i != end_i || debug_log_cnt_wrapped)) {
+			if (seq_printf(m, debug_log_string[i], debug_log_value[i]) < 0)
+				return 0;
+			i = (i+1) % DEBUG_LOG_MAX;
+		}
+	}
+	seq_putc(m, '\n');
 #endif
 
-    num_to_show = (fast_timers_started < NUM_TIMER_STATS ? fast_timers_started:
-                   NUM_TIMER_STATS);
-    used += sprintf(bigbuf + used, "Timers started: %i\n", fast_timers_started);
-    for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE) ; i++)
-    {
-      int cur = (fast_timers_started - i - 1) % NUM_TIMER_STATS;
+	num_to_show = (fast_timers_started < NUM_TIMER_STATS ? fast_timers_started:
+		       NUM_TIMER_STATS);
+	seq_printf(m, "Timers started: %i\n", fast_timers_started);
+	for (i = 0; i < num_to_show; i++) {
+		int cur = (fast_timers_started - i - 1) % NUM_TIMER_STATS;
 
 #if 1 //ndef FAST_TIMER_LOG
-      used += sprintf(bigbuf + used, "div: %i delay: %i"
-                      "\n",
-                      timer_div_settings[cur],
-                      timer_delay_settings[cur]
-                      );
+		seq_printf(m, "div: %i delay: %i"
+			   "\n",
+			   timer_div_settings[cur],
+			   timer_delay_settings[cur]);
 #endif
 #ifdef FAST_TIMER_LOG
-      t = &timer_started_log[cur];
-      used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
-                      "d: %6li us data: 0x%08lX"
-                      "\n",
-                      t->name,
-				(unsigned long)t->tv_set.tv_jiff,
-                      (unsigned long)t->tv_set.tv_usec,
-				(unsigned long)t->tv_expires.tv_jiff,
-                      (unsigned long)t->tv_expires.tv_usec,
-                      t->delay_us,
-                      t->data
-                      );
+		t = &timer_started_log[cur];
+		if (seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
+			       "d: %6li us data: 0x%08lX"
+			       "\n",
+			       t->name,
+			       (unsigned long)t->tv_set.tv_jiff,
+			       (unsigned long)t->tv_set.tv_usec,
+			       (unsigned long)t->tv_expires.tv_jiff,
+			       (unsigned long)t->tv_expires.tv_usec,
+			       t->delay_us,
+			       t->data) < 0)
+			return 0;
 #endif
-    }
-    used += sprintf(bigbuf + used, "\n");
+	}
+	seq_putc(m, '\n');
 
 #ifdef FAST_TIMER_LOG
-    num_to_show = (fast_timers_added < NUM_TIMER_STATS ? fast_timers_added:
-                   NUM_TIMER_STATS);
-    used += sprintf(bigbuf + used, "Timers added: %i\n", fast_timers_added);
-    for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE); i++)
-    {
-      t = &timer_added_log[(fast_timers_added - i - 1) % NUM_TIMER_STATS];
-      used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
-                      "d: %6li us data: 0x%08lX"
-                      "\n",
-                      t->name,
-				(unsigned long)t->tv_set.tv_jiff,
-                      (unsigned long)t->tv_set.tv_usec,
-				(unsigned long)t->tv_expires.tv_jiff,
-                      (unsigned long)t->tv_expires.tv_usec,
-                      t->delay_us,
-                      t->data
-                      );
-    }
-    used += sprintf(bigbuf + used, "\n");
-
-    num_to_show = (fast_timers_expired < NUM_TIMER_STATS ? fast_timers_expired:
-                   NUM_TIMER_STATS);
-    used += sprintf(bigbuf + used, "Timers expired: %i\n", fast_timers_expired);
-    for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE); i++)
-    {
-      t = &timer_expired_log[(fast_timers_expired - i - 1) % NUM_TIMER_STATS];
-      used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
-                      "d: %6li us data: 0x%08lX"
-                      "\n",
-                      t->name,
-				(unsigned long)t->tv_set.tv_jiff,
-                      (unsigned long)t->tv_set.tv_usec,
-				(unsigned long)t->tv_expires.tv_jiff,
-                      (unsigned long)t->tv_expires.tv_usec,
-                      t->delay_us,
-                      t->data
-                      );
-    }
-    used += sprintf(bigbuf + used, "\n");
+	num_to_show = (fast_timers_added < NUM_TIMER_STATS ? fast_timers_added:
+		       NUM_TIMER_STATS);
+	seq_printf(m, "Timers added: %i\n", fast_timers_added);
+	for (i = 0; i < num_to_show; i++) {
+		t = &timer_added_log[(fast_timers_added - i - 1) % NUM_TIMER_STATS];
+		if (seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
+			       "d: %6li us data: 0x%08lX"
+			       "\n",
+			       t->name,
+			       (unsigned long)t->tv_set.tv_jiff,
+			       (unsigned long)t->tv_set.tv_usec,
+			       (unsigned long)t->tv_expires.tv_jiff,
+			       (unsigned long)t->tv_expires.tv_usec,
+			       t->delay_us,
+			       t->data) < 0)
+			return 0;
+	}
+	seq_putc(m, '\n');
+
+	num_to_show = (fast_timers_expired < NUM_TIMER_STATS ? fast_timers_expired:
+		       NUM_TIMER_STATS);
+	seq_printf(m, "Timers expired: %i\n", fast_timers_expired);
+	for (i = 0; i < num_to_show; i++){
+		t = &timer_expired_log[(fast_timers_expired - i - 1) % NUM_TIMER_STATS];
+		if (seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
+			       "d: %6li us data: 0x%08lX"
+			       "\n",
+			       t->name,
+			       (unsigned long)t->tv_set.tv_jiff,
+			       (unsigned long)t->tv_set.tv_usec,
+			       (unsigned long)t->tv_expires.tv_jiff,
+			       (unsigned long)t->tv_expires.tv_usec,
+			       t->delay_us,
+			       t->data) < 0)
+			return 0;
+	}
+	seq_putc(m, '\n');
 #endif
 
-    used += sprintf(bigbuf + used, "Active timers:\n");
-    local_irq_save(flags);
-    t = fast_timer_list;
-    while (t != NULL && (used+100 < BIG_BUF_SIZE))
-    {
-      nextt = t->next;
-      local_irq_restore(flags);
-      used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
-			"d: %6li us data: 0x%08lX"
+	seq_puts(m, "Active timers:\n");
+	local_irq_save(flags);
+	t = fast_timer_list;
+	while (t != NULL){
+		nextt = t->next;
+		local_irq_restore(flags);
+		if (seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
+			       "d: %6li us data: 0x%08lX"
 /*			" func: 0x%08lX" */
-			"\n",
-			t->name,
-			(unsigned long)t->tv_set.tv_jiff,
-			(unsigned long)t->tv_set.tv_usec,
-			(unsigned long)t->tv_expires.tv_jiff,
-			(unsigned long)t->tv_expires.tv_usec,
-                      t->delay_us,
-                      t->data
+			       "\n",
+			       t->name,
+			       (unsigned long)t->tv_set.tv_jiff,
+			       (unsigned long)t->tv_set.tv_usec,
+			       (unsigned long)t->tv_expires.tv_jiff,
+			       (unsigned long)t->tv_expires.tv_usec,
+			       t->delay_us,
+			       t->data
 /*                      , t->function */
-                      );
-			local_irq_save(flags);
-      if (t->next != nextt)
-      {
-        printk("timer removed!\n");
-      }
-      t = nextt;
-    }
-    local_irq_restore(flags);
-  }
+			       ) < 0)
+			return 0;
+		local_irq_save(flags);
+		if (t->next != nextt)
+			printk("timer removed!\n");
+		t = nextt;
+	}
+	local_irq_restore(flags);
+	return 0;
+}
 
-  if (used - offset < len)
-  {
-    len = used - offset;
-  }
+static int proc_fasttimer_open(struct inode *inode, struct file *file)
+{
+	return single_open_size(file, proc_fasttimer_show, PDE_DATA(inode), BIG_BUF_SIZE);
+}
 
-  memcpy(buf, bigbuf + offset, len);
-  *start = buf;
-  *eof = 1;
+static const struct file_operations proc_fasttimer_fops = {
+	.open		= proc_fasttimer_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
-  return len;
-}
 #endif /* PROC_FS */
 
 #ifdef FAST_TIMER_TEST
@@ -816,12 +783,10 @@ int fast_timer_init(void)
     printk("fast_timer_init()\n");
 
 #ifdef CONFIG_PROC_FS
-    fasttimer_proc_entry = create_proc_entry("fasttimer", 0, 0);
-    if (fasttimer_proc_entry)
-      fasttimer_proc_entry->read_proc = proc_fasttimer_read;
+    proc_create("fasttimer", 0, NULL, &proc_fasttimer_fops);
 #endif /* PROC_FS */
 		if (request_irq(TIMER0_INTR_VECT, timer_trig_interrupt,
-				IRQF_SHARED | IRQF_DISABLED,
+				IRQF_SHARED,
 				"fast timer int", &fast_timer_list))
 			printk(KERN_ERR "err: fasttimer irq\n");
     fast_timer_is_init = 1;
diff --git a/arch/cris/arch-v32/kernel/head.S b/arch/cris/arch-v32/kernel/head.S
index 5d502b9ab56..51e34165ece 100644
--- a/arch/cris/arch-v32/kernel/head.S
+++ b/arch/cris/arch-v32/kernel/head.S
@@ -36,13 +36,6 @@
 	.global nand_boot
 	.global swapper_pg_dir
 
-	;; Dummy section to make it bootable with current VCS simulator
-#ifdef CONFIG_ETRAX_VCS_SIM
-	.section ".boot", "ax"
-	ba tstart
-	nop
-#endif
-
 	.text
 tstart:
 	;; This is the entry point of the kernel. The CPU is currently in
@@ -75,17 +68,10 @@ secondary_cpu_entry: /* Entry point for secondary CPUs */
 		| REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 4)	\
 		| REG_FIELD(mmu, rw_mm_kbase_hi, base_d, 5)     \
 		| REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb), $r0
-#elif !defined(CONFIG_ETRAX_VCS_SIM)
-	move.d	REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 8)	\
-		| REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 4)	\
-		| REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb), $r0
 #else
-	;; Map the virtual DRAM to the RW eprom area at address 0.
-	;; Also map 0xa for the hook calls,
 	move.d	REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 8)	\
 		| REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 4)	\
-		| REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb)   \
-		| REG_FIELD(mmu, rw_mm_kbase_hi, base_a, 0xa), $r0
+		| REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb), $r0
 #endif
 
 	;; Temporary map of 0x40 -> 0x40 and 0x00 -> 0x00.
@@ -126,27 +112,6 @@ secondary_cpu_entry: /* Entry point for secondary CPUs */
 		| REG_STATE(mmu, rw_mm_cfg, seg_2, page)	\
 		| REG_STATE(mmu, rw_mm_cfg, seg_1, page)	\
 		| REG_STATE(mmu, rw_mm_cfg, seg_0, linear), $r2
-#elif !defined(CONFIG_ETRAX_VCS_SIM)
-	move.d	REG_STATE(mmu, rw_mm_cfg, we, on)		\
-		| REG_STATE(mmu, rw_mm_cfg, acc, on)		\
-		| REG_STATE(mmu, rw_mm_cfg, ex, on)		\
-		| REG_STATE(mmu, rw_mm_cfg, inv, on)		\
-		| REG_STATE(mmu, rw_mm_cfg, seg_f, linear)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_e, linear)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_d, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_c, linear)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_b, linear)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_a, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_9, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_8, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_7, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_6, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_5, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_4, linear)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_3, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_2, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_1, page)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_0, linear), $r2
 #else
 	move.d	REG_STATE(mmu, rw_mm_cfg, we, on)		\
 		| REG_STATE(mmu, rw_mm_cfg, acc, on)		\
@@ -157,7 +122,7 @@ secondary_cpu_entry: /* Entry point for secondary CPUs */
 		| REG_STATE(mmu, rw_mm_cfg, seg_d, page)	\
 		| REG_STATE(mmu, rw_mm_cfg, seg_c, linear)	\
 		| REG_STATE(mmu, rw_mm_cfg, seg_b, linear)	\
-		| REG_STATE(mmu, rw_mm_cfg, seg_a, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_a, page)	\
 		| REG_STATE(mmu, rw_mm_cfg, seg_9, page)	\
 		| REG_STATE(mmu, rw_mm_cfg, seg_8, page)	\
 		| REG_STATE(mmu, rw_mm_cfg, seg_7, page)	\
@@ -226,7 +191,6 @@ master_cpu:
 	move.d secondary_cpu_entry, $r1
 	move.d $r1, [$r0]
 #endif
-#ifndef CONFIG_ETRAX_VCS_SIM
 	; Check if starting from DRAM (network->RAM boot or unpacked
 	; compressed kernel), or directly from flash.
 	lapcq	., $r0
@@ -234,7 +198,6 @@ master_cpu:
 	cmp.d	0x10000, $r0	; Arbitrary, something above this code.
 	blo	_inflash0
 	nop
-#endif
 
 	jump	_inram		; Jump to cached RAM.
 	nop
@@ -326,7 +289,6 @@ move_cramfs:
 	move.d	romfs_length, $r1
 	move.d	$r0, [$r1]
 
-#ifndef CONFIG_ETRAX_VCS_SIM
 	;; The kernel could have been unpacked to DRAM by the loader, but
 	;; the cramfs image could still be in the flash immediately
 	;; following the compressed kernel image. The loader passes the address
@@ -335,10 +297,6 @@ move_cramfs:
 	cmp.d	0x0ffffff8, $r9
 	bhs	_no_romfs_in_flash ; R9 points outside the flash area.
 	nop
-#else
-	ba _no_romfs_in_flash
-	nop
-#endif
 	;; cramfs rootfs might to be in flash. Check for it.
 	move.d	[$r9], $r0	; cramfs_super.magic
 	cmp.d	CRAMFS_MAGIC, $r0
@@ -396,7 +354,6 @@ _no_romfs_in_flash:
 	move.d	romfs_length, $r3
 	move.d	$r2, [$r3]	; store size at romfs_length
 
-#ifndef CONFIG_ETRAX_VCS_SIM
 	add.d	$r2, $r0	; copy from end and downwards
 	add.d	$r2, $r1
 
@@ -410,7 +367,6 @@ _no_romfs_in_flash:
 	subq	1, $r2
 	bne	1b
 	nop
-#endif
 
 4:
 	;; BSS move done.
@@ -455,7 +411,6 @@ no_command_line:
 	move.d	etrax_irv, $r1	; Set the exception base register and pointer.
 	move.d	$r0, [$r1]
 
-#ifndef CONFIG_ETRAX_VCS_SIM
 	;; Clear the BSS region from _bss_start to _end.
 	move.d	__bss_start, $r0
 	move.d	_end, $r1
@@ -463,15 +418,6 @@ no_command_line:
 	cmp.d	$r1, $r0
 	blo 1b
 	nop
-#endif
-
-#ifdef CONFIG_ETRAX_VCS_SIM
-	/* Set the watchdog timeout to something big. Will be removed when */
-	/* watchdog can be disabled with command line option */
-	move.d  0x7fffffff, $r10
-	jsr     CPU_WATCHDOG_TIMEOUT
-	nop
-#endif
 
 	; Initialize registers to increase determinism
 	move.d __bss_start, $r0
diff --git a/arch/cris/arch-v32/kernel/irq.c b/arch/cris/arch-v32/kernel/irq.c
index 5ebe6e84182..25437ae2812 100644
--- a/arch/cris/arch-v32/kernel/irq.c
+++ b/arch/cris/arch-v32/kernel/irq.c
@@ -331,11 +331,11 @@ extern void do_IRQ(int irq, struct pt_regs * regs);
 void
 crisv32_do_IRQ(int irq, int block, struct pt_regs* regs)
 {
-	/* Interrupts that may not be moved to another CPU and
-         * are IRQF_DISABLED may skip blocking. This is currently
-         * only valid for the timer IRQ and the IPI and is used
-         * for the timer interrupt to avoid watchdog starvation.
-         */
+	/* Interrupts that may not be moved to another CPU may
+	 * skip blocking. This is currently only valid for the
+	 * timer IRQ and the IPI and is used for the timer
+	 * interrupt to avoid watchdog starvation.
+	 */
 	if (!block) {
 		do_IRQ(irq, regs);
 		return;
diff --git a/arch/cris/arch-v32/kernel/kgdb.c b/arch/cris/arch-v32/kernel/kgdb.c
index 8c1d35cdf00..b06813aeb12 100644
--- a/arch/cris/arch-v32/kernel/kgdb.c
+++ b/arch/cris/arch-v32/kernel/kgdb.c
@@ -381,23 +381,9 @@ static int read_register(char regno, unsigned int *valptr);
 /* Serial port, reads one character. ETRAX 100 specific. from debugport.c */
 int getDebugChar(void);
 
-#ifdef CONFIG_ETRAX_VCS_SIM
-int getDebugChar(void)
-{
-  return socketread();
-}
-#endif
-
 /* Serial port, writes one character. ETRAX 100 specific. from debugport.c */
 void putDebugChar(int val);
 
-#ifdef CONFIG_ETRAX_VCS_SIM
-void putDebugChar(int val)
-{
-  socketwrite((char *)&val, 1);
-}
-#endif
-
 /* Returns the integer equivalent of a hexadecimal character. */
 static int hex(char ch);
 
diff --git a/arch/cris/arch-v32/kernel/process.c b/arch/cris/arch-v32/kernel/process.c
index 0570e8ce603..cebd32e2a8f 100644
--- a/arch/cris/arch-v32/kernel/process.c
+++ b/arch/cris/arch-v32/kernel/process.c
@@ -16,21 +16,16 @@
 #include <hwregs/reg_map.h>
 #include <hwregs/timer_defs.h>
 #include <hwregs/intr_vect_defs.h>
+#include <linux/ptrace.h>
 
 extern void stop_watchdog(void);
 
-extern int cris_hlt_counter;
-
 /* We use this if we don't have any better idle routine. */
 void default_idle(void)
 {
-	local_irq_disable();
-	if (!need_resched() && !cris_hlt_counter) {
-	        /* Halt until exception. */
-		__asm__ volatile("ei    \n\t"
-                                 "halt      ");
-	}
-	local_irq_enable();
+	/* Halt until exception. */
+	__asm__ volatile("ei    \n\t"
+			 "halt      ");
 }
 
 /*
@@ -94,31 +89,6 @@ unsigned long thread_saved_pc(struct task_struct *t)
 	return task_pt_regs(t)->erp;
 }
 
-static void
-kernel_thread_helper(void* dummy, int (*fn)(void *), void * arg)
-{
-	fn(arg);
-	do_exit(-1); /* Should never be called, return bad exit value. */
-}
-
-/* Create a kernel thread. */
-int
-kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
-{
-	struct pt_regs regs;
-
-	memset(&regs, 0, sizeof(regs));
-
-        /* Don't use r10 since that is set to 0 in copy_thread. */
-	regs.r11 = (unsigned long) fn;
-	regs.r12 = (unsigned long) arg;
-	regs.erp = (unsigned long) kernel_thread_helper;
-	regs.ccs = 1 << (I_CCS_BITNR + CCS_SHIFT);
-
-	/* Create the new process. */
-        return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
-}
-
 /*
  * Setup the child's kernel stack with a pt_regs and call switch_stack() on it.
  * It will be unnested during _resume and _ret_from_sys_call when the new thread
@@ -129,34 +99,42 @@ kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
  */
 
 extern asmlinkage void ret_from_fork(void);
+extern asmlinkage void ret_from_kernel_thread(void);
 
 int
 copy_thread(unsigned long clone_flags, unsigned long usp,
-	unsigned long unused,
-	struct task_struct *p, struct pt_regs *regs)
+	unsigned long arg, struct task_struct *p)
 {
-	struct pt_regs *childregs;
-	struct switch_stack *swstack;
+	struct pt_regs *childregs = task_pt_regs(p);
+	struct switch_stack *swstack = ((struct switch_stack *) childregs) - 1;
 
 	/*
 	 * Put the pt_regs structure at the end of the new kernel stack page and
 	 * fix it up. Note: the task_struct doubles as the kernel stack for the
 	 * task.
 	 */
-	childregs = task_pt_regs(p);
-	*childregs = *regs;	/* Struct copy of pt_regs. */
-        p->set_child_tid = p->clear_child_tid = NULL;
+	if (unlikely(p->flags & PF_KTHREAD)) {
+		memset(swstack, 0,
+			sizeof(struct switch_stack) + sizeof(struct pt_regs));
+		swstack->r1 = usp;
+		swstack->r2 = arg;
+		childregs->ccs = 1 << (I_CCS_BITNR + CCS_SHIFT);
+		swstack->return_ip = (unsigned long) ret_from_kernel_thread;
+		p->thread.ksp = (unsigned long) swstack;
+		p->thread.usp = 0;
+		return 0;
+	}
+	*childregs = *current_pt_regs();	/* Struct copy of pt_regs. */
         childregs->r10 = 0;	/* Child returns 0 after a fork/clone. */
 
 	/* Set a new TLS ?
 	 * The TLS is in $mof because it is the 5th argument to sys_clone.
 	 */
 	if (p->mm && (clone_flags & CLONE_SETTLS)) {
-		task_thread_info(p)->tls = regs->mof;
+		task_thread_info(p)->tls = childregs->mof;
 	}
 
 	/* Put the switch stack right below the pt_regs. */
-	swstack = ((struct switch_stack *) childregs) - 1;
 
 	/* Parameter to ret_from_sys_call. 0 is don't restart the syscall. */
 	swstack->r9 = 0;
@@ -168,76 +146,12 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 	swstack->return_ip = (unsigned long) ret_from_fork;
 
 	/* Fix the user-mode and kernel-mode stackpointer. */
-	p->thread.usp = usp;
+	p->thread.usp = usp ?: rdusp();
 	p->thread.ksp = (unsigned long) swstack;
 
 	return 0;
 }
 
-/*
- * Be aware of the "magic" 7th argument in the four system-calls below.
- * They need the latest stackframe, which is put as the 7th argument by
- * entry.S. The previous arguments are dummies or actually used, but need
- * to be defined to reach the 7th argument.
- *
- * N.B.: Another method to get the stackframe is to use current_regs(). But
- * it returns the latest stack-frame stacked when going from _user mode_ and
- * some of these (at least sys_clone) are called from kernel-mode sometimes
- * (for example during kernel_thread, above) and thus cannot use it. Thus,
- * to be sure not to get any surprises, we use the method for the other calls
- * as well.
- */
-asmlinkage int
-sys_fork(long r10, long r11, long r12, long r13, long mof, long srp,
-	struct pt_regs *regs)
-{
-	return do_fork(SIGCHLD, rdusp(), regs, 0, NULL, NULL);
-}
-
-/* FIXME: Is parent_tid/child_tid really third/fourth argument? Update lib? */
-asmlinkage int
-sys_clone(unsigned long newusp, unsigned long flags, int *parent_tid, int *child_tid,
-	unsigned long tls, long srp, struct pt_regs *regs)
-{
-	if (!newusp)
-		newusp = rdusp();
-
-	return do_fork(flags, newusp, regs, 0, parent_tid, child_tid);
-}
-
-/*
- * vfork is a system call in i386 because of register-pressure - maybe
- * we can remove it and handle it in libc but we put it here until then.
- */
-asmlinkage int
-sys_vfork(long r10, long r11, long r12, long r13, long mof, long srp,
-	struct pt_regs *regs)
-{
-	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, NULL, NULL);
-}
-
-/* sys_execve() executes a new program. */
-asmlinkage int
-sys_execve(const char *fname,
-	   const char *const *argv,
-	   const char *const *envp, long r13, long mof, long srp,
-	   struct pt_regs *regs)
-{
-	int error;
-	char *filename;
-
-	filename = getname(fname);
-	error = PTR_ERR(filename);
-
-	if (IS_ERR(filename))
-	        goto out;
-
-	error = do_execve(filename, argv, envp, regs);
-	putname(filename);
- out:
-	return error;
-}
-
 unsigned long
 get_wchan(struct task_struct *p)
 {
@@ -250,6 +164,9 @@ get_wchan(struct task_struct *p)
 void show_regs(struct pt_regs * regs)
 {
 	unsigned long usp = rdusp();
+
+	show_regs_print_info(KERN_DEFAULT);
+
         printk("ERP: %08lx SRP: %08lx  CCS: %08lx USP: %08lx MOF: %08lx\n",
 		regs->erp, regs->srp, regs->ccs, usp, regs->mof);
 
diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c
index b60d1b65a42..01d1375c900 100644
--- a/arch/cris/arch-v32/kernel/signal.c
+++ b/arch/cris/arch-v32/kernel/signal.c
@@ -51,59 +51,6 @@ struct rt_signal_frame {
 void do_signal(int restart, struct pt_regs *regs);
 void keep_debug_flags(unsigned long oldccs, unsigned long oldspc,
 		      struct pt_regs *regs);
-/*
- * Swap in the new signal mask, and wait for a signal. Define some
- * dummy arguments to be able to reach the regs argument.
- */
-int
-sys_sigsuspend(old_sigset_t mask)
-{
-	sigset_t blocked;
-	siginitset(&blocked, mask);
-	return sigsuspend(&blocked);
-}
-
-int
-sys_sigaction(int signal, const struct old_sigaction *act,
-	      struct old_sigaction *oact)
-{
-	int retval;
-	struct k_sigaction newk;
-	struct k_sigaction oldk;
-
-	if (act) {
-		old_sigset_t mask;
-
-		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
-		    __get_user(newk.sa.sa_handler, &act->sa_handler) ||
-		    __get_user(newk.sa.sa_restorer, &act->sa_restorer) ||
-		    __get_user(newk.sa.sa_flags, &act->sa_flags) ||
-		    __get_user(mask, &act->sa_mask))
-			return -EFAULT;
-
-		siginitset(&newk.sa.sa_mask, mask);
-	}
-
-	retval = do_sigaction(signal, act ? &newk : NULL, oact ? &oldk : NULL);
-
-	if (!retval && oact) {
-		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
-		    __put_user(oldk.sa.sa_handler, &oact->sa_handler) ||
-		    __put_user(oldk.sa.sa_restorer, &oact->sa_restorer) ||
-		    __put_user(oldk.sa.sa_flags, &oact->sa_flags) ||
-		    __put_user(oldk.sa.sa_mask.sig[0], &oact->sa_mask))
-			return -EFAULT;
-
-	}
-
-	return retval;
-}
-
-int
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
-{
-	return do_sigaltstack(uss, uoss, rdusp());
-}
 
 static int
 restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
@@ -135,11 +82,9 @@ badframe:
 	return 1;
 }
 
-/* Define some dummy arguments to be able to reach the regs argument. */
-asmlinkage int
-sys_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp,
-	      struct pt_regs *regs)
+asmlinkage int sys_sigreturn(void)
 {
+	struct pt_regs *regs = current_pt_regs();
 	sigset_t set;
 	struct signal_frame __user *frame;
 	unsigned long oldspc = regs->spc;
@@ -178,11 +123,9 @@ badframe:
 	return 0;
 }
 
-/* Define some dummy variables to be able to reach the regs argument. */
-asmlinkage int
-sys_rt_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp,
-		 struct pt_regs *regs)
+asmlinkage int sys_rt_sigreturn(void)
 {
+	struct pt_regs *regs = current_pt_regs();
 	sigset_t set;
 	struct rt_signal_frame __user *frame;
 	unsigned long oldspc = regs->spc;
@@ -209,7 +152,7 @@ sys_rt_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp,
 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
 		goto badframe;
 
-	if (do_sigaltstack(&frame->uc.uc_stack, NULL, rdusp()) == -EFAULT)
+	if (restore_altstack(&frame->uc.uc_stack))
 		goto badframe;
 
 	keep_debug_flags(oldccs, oldspc, regs);
@@ -371,6 +314,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));
 	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+	err |= __save_altstack(&frame->uc.uc_stack, rdusp());
 
 	if (err)
 		goto give_sigsegv;
diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
index ebe2cb30bd1..0698582467c 100644
--- a/arch/cris/arch-v32/kernel/smp.c
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -64,7 +64,7 @@ static irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id);
 static int send_ipi(int vector, int wait, cpumask_t cpu_mask);
 static struct irqaction irq_ipi  = {
 	.handler = crisv32_ipi_interrupt,
-	.flags = IRQF_DISABLED,
+	.flags = 0,
 	.name = "ipi",
 };
 
@@ -84,7 +84,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 		cpumask_set_cpu(i, &phys_cpu_present_map);
 }
 
-void __devinit smp_prepare_boot_cpu(void)
+void smp_prepare_boot_cpu(void)
 {
 	/* PGD pointer has moved after per_cpu initialization so
 	 * update the MMU.
@@ -145,8 +145,6 @@ smp_boot_one_cpu(int cpuid, struct task_struct idle)
  * specific stuff such as the local timer and the MMU. */
 void __init smp_callin(void)
 {
-	extern void cpu_idle(void);
-
 	int cpu = cpu_now_booting;
 	reg_intr_vect_rw_mask vect_mask = {0};
 
@@ -170,7 +168,7 @@ void __init smp_callin(void)
 	local_irq_enable();
 
 	set_cpu_online(cpu, true);
-	cpu_idle();
+	cpu_startup_entry(CPUHP_ONLINE);
 }
 
 /* Stop execution on this CPU.*/
@@ -199,7 +197,7 @@ int setup_profiling_timer(unsigned int multiplier)
  */
 unsigned long cache_decay_ticks = 1;
 
-int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
+int __cpu_up(unsigned int cpu, struct task_struct *tidle)
 {
 	smp_boot_one_cpu(cpu, tidle);
 	return cpu_online(cpu) ? 0 : -ENOSYS;
diff --git a/arch/cris/arch-v32/kernel/time.c b/arch/cris/arch-v32/kernel/time.c
index 8c4b45efd7b..ee66866538f 100644
--- a/arch/cris/arch-v32/kernel/time.c
+++ b/arch/cris/arch-v32/kernel/time.c
@@ -216,12 +216,10 @@ static inline irqreturn_t timer_interrupt(int irq, void *dev_id)
         return IRQ_HANDLED;
 }
 
-/* Timer is IRQF_SHARED so drivers can add stuff to the timer irq chain.
- * It needs to be IRQF_DISABLED to make the jiffies update work properly.
- */
+/* Timer is IRQF_SHARED so drivers can add stuff to the timer irq chain. */
 static struct irqaction irq_timer = {
 	.handler = timer_interrupt,
-	.flags = IRQF_SHARED | IRQF_DISABLED,
+	.flags = IRQF_SHARED,
 	.name = "timer"
 };