uml: style fixes pass 1

Formatting changes in the files which have been changed in the
tt-removal patchset so far.  These include:
	copyright updates
	header file trimming
	style fixes
	adding severity to printks
	indenting Kconfig help according to the predominant kernel style

These changes should be entirely non-functional.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/Kconfig.debug

@@ -6,27 +6,27 @@ config GPROF
 	bool "Enable gprof support"
 	depends on DEBUG_INFO
 	help
-        This allows profiling of a User-Mode Linux kernel with the gprof
-        utility.
+	  This allows profiling of a User-Mode Linux kernel with the gprof
+	  utility.
 
-        See <http://user-mode-linux.sourceforge.net/gprof.html> for more
-        details.
+	  See <http://user-mode-linux.sourceforge.net/gprof.html> for more
+	  details.
 
-        If you're involved in UML kernel development and want to use gprof,
-        say Y.  If you're unsure, say N.
+	  If you're involved in UML kernel development and want to use gprof,
+	  say Y.  If you're unsure, say N.
 
 config GCOV
 	bool "Enable gcov support"
 	depends on DEBUG_INFO
 	help
-        This option allows developers to retrieve coverage data from a UML
-        session.
+	  This option allows developers to retrieve coverage data from a UML
+	  session.
 
-        See <http://user-mode-linux.sourceforge.net/gprof.html> for more
-        details.
+	  See <http://user-mode-linux.sourceforge.net/gprof.html> for more
+	  details.
 
-        If you're involved in UML kernel development and want to use gcov,
-        say Y.  If you're unsure, say N.
+	  If you're involved in UML kernel development and want to use gcov,
+	  say Y.  If you're unsure, say N.
 
 config DEBUG_STACK_USAGE
 	bool "Stack utilization instrumentation"

arch/um/Makefile

@@ -2,7 +2,7 @@
 # This file is included by the global makefile so that you can add your own
 # architecture-specific flags and dependencies.
 #
-# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 # Licensed under the GPL
 #
 
@@ -124,7 +124,7 @@ endif
 CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
 	-DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE)
 
-#The wrappers will select whether using "malloc" or the kernel allocator.
+# The wrappers will select whether using "malloc" or the kernel allocator.
 LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
 
 CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS)
@@ -137,8 +137,8 @@ define cmd_vmlinux__
 	FORCE ,$^) ; rm -f linux
 endef
 
-#When cleaning we don't include .config, so we don't include
-#TT or skas makefiles and don't clean skas_ptregs.h.
+# When cleaning we don't include .config, so we don't include
+# TT or skas makefiles and don't clean skas_ptregs.h.
 CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
 	$(ARCH_DIR)/include/user_constants.h \
 	$(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch

arch/um/include/sysdep-i386/sigcontext.h

 /* 
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
@@ -37,13 +37,3 @@ extern unsigned long *sc_sigmask(void *sc_ptr);
 extern int sc_get_fpregs(unsigned long buf, void *sc_ptr);
 
 #endif
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

arch/um/kernel/Makefile

 #
-# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux,intel}.com)
 # Licensed under the GPL
 #
 

arch/um/kernel/init_task.c

@@ -3,16 +3,12 @@
  * Licensed under the GPL
  */
 
-#include "linux/mm.h"
-#include "linux/fs.h"
-#include "linux/module.h"
 #include "linux/sched.h"
 #include "linux/init_task.h"
+#include "linux/fs.h"
+#include "linux/module.h"
 #include "linux/mqueue.h"
 #include "asm/uaccess.h"
-#include "asm/pgtable.h"
-#include "mem_user.h"
-#include "os.h"
 
 static struct fs_struct init_fs = INIT_FS;
 struct mm_struct init_mm = INIT_MM(init_mm);

arch/um/kernel/smp.c

 /*
- * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
@@ -56,12 +56,12 @@ void smp_send_stop(void)
 	int i;
 
 	printk(KERN_INFO "Stopping all CPUs...");
-	for(i = 0; i < num_online_cpus(); i++){
-		if(i == current_thread->cpu)
+	for (i = 0; i < num_online_cpus(); i++) {
+		if (i == current_thread->cpu)
 			continue;
 		os_write_file(cpu_data[i].ipi_pipe[1], "S", 1);
 	}
-	printk("done\n");
+	printk(KERN_INFO "done\n");
 }
 
 static cpumask_t smp_commenced_mask = CPU_MASK_NONE;
@@ -72,7 +72,7 @@ static int idle_proc(void *cpup)
 	int cpu = (int) cpup, err;
 
 	err = os_pipe(cpu_data[cpu].ipi_pipe, 1, 1);
-	if(err < 0)
+	if (err < 0)
 		panic("CPU#%d failed to create IPI pipe, err = %d", cpu, -err);
 
 	os_set_fd_async(cpu_data[cpu].ipi_pipe[0],
@@ -80,7 +80,7 @@ static int idle_proc(void *cpup)
 
 	wmb();
 	if (cpu_test_and_set(cpu, cpu_callin_map)) {
-		printk("huh, CPU#%d already present??\n", cpu);
+		printk(KERN_ERR "huh, CPU#%d already present??\n", cpu);
 		BUG();
 	}
 
@@ -99,7 +99,7 @@ static struct task_struct *idle_thread(int cpu)
 	current->thread.request.u.thread.proc = idle_proc;
 	current->thread.request.u.thread.arg = (void *) cpu;
 	new_task = fork_idle(cpu);
-	if(IS_ERR(new_task))
+	if (IS_ERR(new_task))
 		panic("copy_process failed in idle_thread, error = %ld",
 		      PTR_ERR(new_task));
 
@@ -126,14 +126,14 @@ void smp_prepare_cpus(unsigned int maxcpus)
 	cpu_set(me, cpu_callin_map);
 
 	err = os_pipe(cpu_data[me].ipi_pipe, 1, 1);
-	if(err < 0)
+	if (err < 0)
 		panic("CPU#0 failed to create IPI pipe, errno = %d", -err);
 
 	os_set_fd_async(cpu_data[me].ipi_pipe[0],
 		     current->thread.mode.tt.extern_pid);
 
-	for(cpu = 1; cpu < ncpus; cpu++){
-		printk("Booting processor %d...\n", cpu);
+	for (cpu = 1; cpu < ncpus; cpu++) {
+		printk(KERN_INFO "Booting processor %d...\n", cpu);
 
 		idle = idle_thread(cpu);
 
@@ -144,8 +144,8 @@ void smp_prepare_cpus(unsigned int maxcpus)
 			cpu_relax();
 
 		if (cpu_isset(cpu, cpu_callin_map))
-			printk("done\n");
-		else printk("failed\n");
+			printk(KERN_INFO "done\n");
+		else printk(KERN_INFO "failed\n");
 	}
 }
 
@@ -187,13 +187,14 @@ void IPI_handler(int cpu)
 			break;
 
 		case 'S':
-			printk("CPU#%d stopping\n", cpu);
-			while(1)
+			printk(KERN_INFO "CPU#%d stopping\n", cpu);
+			while (1)
 				pause();
 			break;
 
 		default:
-			printk("CPU#%d received unknown IPI [%c]!\n", cpu, c);
+			printk(KERN_ERR "CPU#%d received unknown IPI [%c]!\n",
+			       cpu, c);
 			break;
 		}
 	}

arch/um/kernel/trap.c

 /*
- * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
-#include "linux/kernel.h"
-#include "asm/errno.h"
-#include "linux/sched.h"
-#include "linux/mm.h"
-#include "linux/spinlock.h"
-#include "linux/init.h"
-#include "linux/ptrace.h"
-#include "asm/semaphore.h"
-#include "asm/pgtable.h"
-#include "asm/pgalloc.h"
-#include "asm/tlbflush.h"
-#include "asm/a.out.h"
-#include "asm/current.h"
-#include "asm/irq.h"
-#include "sysdep/sigcontext.h"
-#include "kern_util.h"
-#include "as-layout.h"
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/hardirq.h>
+#include <asm/current.h>
+#include <asm/pgtable.h>
+#include <asm/tlbflush.h>
 #include "arch.h"
-#include "kern.h"
-#include "chan_kern.h"
-#include "mconsole_kern.h"
-#include "mem.h"
-#include "mem_kern.h"
-#include "sysdep/sigcontext.h"
-#include "sysdep/ptrace.h"
-#include "os.h"
-#include "skas.h"
+#include "as-layout.h"
+#include "kern_util.h"
 #include "os.h"
+#include "sysdep/sigcontext.h"
 
-/* Note this is constrained to return 0, -EFAULT, -EACCESS, -ENOMEM by segv(). */
+/*
+ * Note this is constrained to return 0, -EFAULT, -EACCESS, -ENOMEM by
+ * segv().
+ */
 int handle_page_fault(unsigned long address, unsigned long ip,
 		      int is_write, int is_user, int *code_out)
 {
@@ -46,31 +32,33 @@ int handle_page_fault(unsigned long address, unsigned long ip,
 
 	*code_out = SEGV_MAPERR;
 
-	/* If the fault was during atomic operation, don't take the fault, just
-	 * fail. */
+	/*
+	 * If the fault was during atomic operation, don't take the fault, just
+	 * fail.
+	 */
 	if (in_atomic())
 		goto out_nosemaphore;
 
 	down_read(&mm->mmap_sem);
 	vma = find_vma(mm, address);
-	if(!vma)
+	if (!vma)
 		goto out;
-	else if(vma->vm_start <= address)
+	else if (vma->vm_start <= address)
 		goto good_area;
-	else if(!(vma->vm_flags & VM_GROWSDOWN))
+	else if (!(vma->vm_flags & VM_GROWSDOWN))
 		goto out;
-	else if(is_user && !ARCH_IS_STACKGROW(address))
+	else if (is_user && !ARCH_IS_STACKGROW(address))
 		goto out;
-	else if(expand_stack(vma, address))
+	else if (expand_stack(vma, address))
 		goto out;
 
 good_area:
 	*code_out = SEGV_ACCERR;
-	if(is_write && !(vma->vm_flags & VM_WRITE))
+	if (is_write && !(vma->vm_flags & VM_WRITE))
 		goto out;
 
 	/* Don't require VM_READ|VM_EXEC for write faults! */
-	if(!is_write && !(vma->vm_flags & (VM_READ | VM_EXEC)))
+	if (!is_write && !(vma->vm_flags & (VM_READ | VM_EXEC)))
 		goto out;
 
 	do {
@@ -96,9 +84,10 @@ survive:
 		pud = pud_offset(pgd, address);
 		pmd = pmd_offset(pud, address);
 		pte = pte_offset_kernel(pmd, address);
-	} while(!pte_present(*pte));
+	} while (!pte_present(*pte));
 	err = 0;
-	/* The below warning was added in place of
+	/*
+	 * The below warning was added in place of
 	 *	pte_mkyoung(); if (is_write) pte_mkdirty();
 	 * If it's triggered, we'd see normally a hang here (a clean pte is
 	 * marked read-only to emulate the dirty bit).
@@ -112,7 +101,7 @@ survive:
 out:
 	up_read(&mm->mmap_sem);
 out_nosemaphore:
-	return(err);
+	return err;
 
 /*
  * We ran out of memory, or some other thing happened to us that made
@@ -143,7 +132,7 @@ static void segv_handler(int sig, union uml_pt_regs *regs)
 {
 	struct faultinfo * fi = UPT_FAULTINFO(regs);
 
-	if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){
+	if (UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)) {
 		bad_segv(*fi, UPT_IP(regs));
 		return;
 	}
@@ -165,37 +154,41 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user,
 	int is_write = FAULT_WRITE(fi);
 	unsigned long address = FAULT_ADDRESS(fi);
 
-	if(!is_user && (address >= start_vm) && (address < end_vm)){
+	if (!is_user && (address >= start_vm) && (address < end_vm)) {
 		flush_tlb_kernel_vm();
 		return 0;
 	}
-	else if(current->mm == NULL) {
+	else if (current->mm == NULL) {
 		show_regs(container_of(regs, struct pt_regs, regs));
-  		panic("Segfault with no mm");
+		panic("Segfault with no mm");
 	}
 
 	if (SEGV_IS_FIXABLE(&fi) || SEGV_MAYBE_FIXABLE(&fi))
-		err = handle_page_fault(address, ip, is_write, is_user, &si.si_code);
+		err = handle_page_fault(address, ip, is_write, is_user,
+					&si.si_code);
 	else {
 		err = -EFAULT;
-		/* A thread accessed NULL, we get a fault, but CR2 is invalid.
-		 * This code is used in __do_copy_from_user() of TT mode. */
+		/*
+		 * A thread accessed NULL, we get a fault, but CR2 is invalid.
+		 * This code is used in __do_copy_from_user() of TT mode.
+		 * XXX tt mode is gone, so maybe this isn't needed any more
+		 */
 		address = 0;
 	}
 
 	catcher = current->thread.fault_catcher;
-	if(!err)
+	if (!err)
 		return 0;
-	else if(catcher != NULL){
+	else if (catcher != NULL) {
 		current->thread.fault_addr = (void *) address;
 		do_longjmp(catcher, 1);
 	}
-	else if(current->thread.fault_addr != NULL)
+	else if (current->thread.fault_addr != NULL)
 		panic("fault_addr set but no fault catcher");
-	else if(!is_user && arch_fixup(ip, regs))
+	else if (!is_user && arch_fixup(ip, regs))
 		return 0;
 
-	if(!is_user) {
+	if (!is_user) {
 		show_regs(container_of(regs, struct pt_regs, regs));
 		panic("Kernel mode fault at addr 0x%lx, ip 0x%lx",
 		      address, ip);
@@ -209,7 +202,7 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user,
 		current->thread.arch.faultinfo = fi;
 		force_sig_info(SIGBUS, &si, current);
 	} else if (err == -ENOMEM) {
-		printk("VM: killing process %s\n", current->comm);
+		printk(KERN_INFO "VM: killing process %s\n", current->comm);
 		do_exit(SIGKILL);
 	} else {
 		BUG_ON(err != -EFAULT);
@@ -223,13 +216,13 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user,
 
 void relay_signal(int sig, union uml_pt_regs *regs)
 {
-	if(arch_handle_signal(sig, regs))
+	if (arch_handle_signal(sig, regs))
 		return;
 
-	if(!UPT_IS_USER(regs)){
-		if(sig == SIGBUS)
-			printk("Bus error - the host /dev/shm or /tmp mount "
-			       "likely just ran out of space\n");
+	if (!UPT_IS_USER(regs)) {
+		if (sig == SIGBUS)
+			printk(KERN_ERR "Bus error - the host /dev/shm or /tmp "
+			       "mount likely just ran out of space\n");
 		panic("Kernel mode signal %d", sig);
 	}
 
@@ -239,7 +232,7 @@ void relay_signal(int sig, union uml_pt_regs *regs)
 
 static void bus_handler(int sig, union uml_pt_regs *regs)
 {
-	if(current->thread.fault_catcher != NULL)
+	if (current->thread.fault_catcher != NULL)
 		do_longjmp(current->thread.fault_catcher, 1);
 	else relay_signal(sig, regs);
 }

arch/um/os-Linux/Makefile

 # 
-# Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
+# Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 # Licensed under the GPL
 #
 

arch/um/os-Linux/sys-i386/Makefile

 #
-# Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
+# Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 # Licensed under the GPL
 #
 

arch/um/os-Linux/time.c

 /*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
+#include <stddef.h>
+#include <errno.h>
+#include <signal.h>
 #include <time.h>
 #include <sys/time.h>
-#include <signal.h>
-#include <errno.h>
 #include "kern_util.h"
-#include "user.h"
-#include "process.h"
 #include "kern_constants.h"
 #include "os.h"
-#include "uml-config.h"
+#include "user.h"
 
 int set_interval(int is_virtual)
 {
@@ -24,7 +20,7 @@ int set_interval(int is_virtual)
 	struct itimerval interval = ((struct itimerval) { { 0, usec },
 							  { 0, usec } });
 
-	if(setitimer(timer_type, &interval, NULL) == -1)
+	if (setitimer(timer_type, &interval, NULL) == -1)
 		return -errno;
 
 	return 0;
@@ -33,10 +29,12 @@ int set_interval(int is_virtual)
 void disable_timer(void)
 {
 	struct itimerval disable = ((struct itimerval) { { 0, 0 }, { 0, 0 }});
-	if((setitimer(ITIMER_VIRTUAL, &disable, NULL) < 0) ||
-	   (setitimer(ITIMER_REAL, &disable, NULL) < 0))
-		printk("disnable_timer - setitimer failed, errno = %d\n",
-		       errno);
+
+	if ((setitimer(ITIMER_VIRTUAL, &disable, NULL) < 0) ||
+	    (setitimer(ITIMER_REAL, &disable, NULL) < 0))
+		printk(UM_KERN_ERR "disable_timer - setitimer failed, "
+		       "errno = %d\n", errno);
+
 	/* If there are signals already queued, after unblocking ignore them */
 	signal(SIGALRM, SIG_IGN);
 	signal(SIGVTALRM, SIG_IGN);
@@ -49,7 +47,7 @@ void switch_timers(int to_real)
 							{ 0, 1000000/hz() }});
 	int old, new;
 
-	if(to_real){
+	if (to_real) {
 		old = ITIMER_VIRTUAL;
 		new = ITIMER_REAL;
 	}
@@ -58,10 +56,10 @@ void switch_timers(int to_real)
 		new = ITIMER_VIRTUAL;
 	}
 
-	if((setitimer(old, &disable, NULL) < 0) ||
-	   (setitimer(new, &enable, NULL)))
-		printk("switch_timers - setitimer failed, errno = %d\n",
-		       errno);
+	if ((setitimer(old, &disable, NULL) < 0) ||
+	    (setitimer(new, &enable, NULL)))
+		printk(UM_KERN_ERR "switch_timers - setitimer failed, "
+		       "errno = %d\n", errno);
 }
 
 unsigned long long os_nsecs(void)
@@ -69,7 +67,7 @@ unsigned long long os_nsecs(void)
 	struct timeval tv;
 
 	gettimeofday(&tv, NULL);
-	return((unsigned long long) tv.tv_sec * BILLION + tv.tv_usec * 1000);
+	return (unsigned long long) tv.tv_sec * BILLION + tv.tv_usec * 1000;
 }
 
 void idle_sleep(int secs)

arch/um/os-Linux/tls.c

 #include <errno.h>
-#include <unistd.h>
 #include <sys/ptrace.h>
-#include <sys/syscall.h>
-#include <asm/ldt.h>
 #include "sysdep/tls.h"
-#include "uml-config.h"
 
 /* TLS support - we basically rely on the host's one.*/
 

arch/um/sys-i386/Makefile

+#
+# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+#
+
 obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \
 	ptrace_user.o setjmp.o signal.o sigcontext.o stub.o stub_segv.o \
 	syscalls.o sysrq.o sys_call_table.o tls.o

arch/um/sys-i386/ptrace_user.c

 /*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
-#include <stdio.h>
-#include <stddef.h>
 #include <errno.h>
-#include <unistd.h>
-#include "ptrace_user.h"
-/* Grr, asm/user.h includes asm/ptrace.h, so has to follow ptrace_user.h */
-#include <asm/user.h>
-#include "kern_util.h"
-#include "user.h"
-#include "os.h"
-#include "uml-config.h"
+#include <sys/ptrace.h>
 
 int ptrace_getregs(long pid, unsigned long *regs_out)
 {