Merge branch 'linus' into stackprotector

Conflicts:
	arch/x86/kernel/Makefile
	include/asm-x86/pda.h

9 files changed, 121 insertions, 163 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 6199d1120900..8a8e2d00c40e 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -171,7 +171,7 @@ config BSD_PROCESS_ACCT_V3
           process and it's parent. Note that this file format is incompatible
           with previous v0/v1/v2 file formats, so you will need updated tools
           for processing it. A preliminary version of these tools is available
-          at <http://www.physik3.uni-rostock.de/tim/kernel/utils/acct/>.
+          at <http://www.gnu.org/software/acct/>.
 
 config TASKSTATS
         bool "Export task/process statistics through netlink (EXPERIMENTAL)"
@@ -486,7 +486,7 @@ config PID_NS
         default n
         depends on NAMESPACES && EXPERIMENTAL
         help
-          Suport process id namespaces.  This allows having multiple
+          Support process id namespaces.  This allows having multiple
           process with the same pid as long as they are in different
           pid namespaces.  This is a building block of containers.
 
@@ -522,7 +522,7 @@ config CC_OPTIMIZE_FOR_SIZE
           Enabling this option will pass "-Os" instead of "-O2" to gcc
           resulting in a smaller kernel.
 
-          If unsure, say N.
+          If unsure, say Y.
 
 config SYSCTL
         bool
@@ -558,17 +558,6 @@ config SYSCTL_SYSCALL
 
           If unsure say Y here.
 
-config SYSCTL_SYSCALL_CHECK
-        bool "Sysctl checks" if EMBEDDED
-        depends on SYSCTL_SYSCALL
-        default y
-        ---help---
-          sys_sysctl uses binary paths that have been found challenging
-          to properly maintain and use. This enables checks that help
-          you to keep things correct.
-
-          If unsure say Y here.
-
 config KALLSYMS
          bool "Load all symbols for debugging/ksymoops" if EMBEDDED
          default y
@@ -790,18 +779,12 @@ config MARKERS
 
 source "arch/Kconfig"
 
-config PROC_PAGE_MONITOR
-        default y
-        depends on PROC_FS && MMU
-        bool "Enable /proc page monitoring" if EMBEDDED
-        help
-          Various /proc files exist to monitor process memory utilization:
-          /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
-          /proc/kpagecount, and /proc/kpageflags. Disabling these
-          interfaces will reduce the size of the kernel by approximately 4kb.
-
 endmenu         # General setup
 
+config HAVE_GENERIC_DMA_COHERENT
+        bool
+        default n
+
 config SLABINFO
         bool
         depends on PROC_FS
@@ -841,9 +824,10 @@ menuconfig MODULES
 
           If unsure, say Y.
 
+if MODULES
+
 config MODULE_FORCE_LOAD
         bool "Forced module loading"
-        depends on MODULES
         default n
         help
           Allow loading of modules without version information (ie. modprobe
@@ -852,12 +836,11 @@ config MODULE_FORCE_LOAD
 
 config MODULE_UNLOAD
         bool "Module unloading"
-        depends on MODULES
         help
           Without this option you will not be able to unload any
           modules (note that some modules may not be unloadable
-          anyway), which makes your kernel slightly smaller and
-          simpler.  If unsure, say Y.
+          anyway), which makes your kernel smaller, faster
+          and simpler.  If unsure, say Y.
 
 config MODULE_FORCE_UNLOAD
         bool "Forced module unloading"
@@ -871,7 +854,6 @@ config MODULE_FORCE_UNLOAD
 
 config MODVERSIONS
         bool "Module versioning support"
-        depends on MODULES
         help
           Usually, you have to use modules compiled with your kernel.
           Saying Y here makes it sometimes possible to use modules
@@ -882,7 +864,6 @@ config MODVERSIONS
 
 config MODULE_SRCVERSION_ALL
         bool "Source checksum for all modules"
-        depends on MODULES
         help
           Modules which contain a MODULE_VERSION get an extra "srcversion"
           field inserted into their modinfo section, which contains a
@@ -893,16 +874,12 @@ config MODULE_SRCVERSION_ALL
           will be created for all modules.  If unsure, say N.
 
 config KMOD
-        bool "Automatic kernel module loading"
-        depends on MODULES
-        help
-          Normally when you have selected some parts of the kernel to
-          be created as kernel modules, you must load them (using the
-          "modprobe" command) before you can use them. If you say Y
-          here, some parts of the kernel will be able to load modules
-          automatically: when a part of the kernel needs a module, it
-          runs modprobe with the appropriate arguments, thereby
-          loading the module if it is available.  If unsure, say Y.
+        def_bool y
+        help
+          This is being removed soon.  These days, CONFIG_MODULES
+          implies CONFIG_KMOD, so use that instead.
+
+endif # MODULES
 
 config STOP_MACHINE
         bool
diff --git a/init/calibrate.c b/init/calibrate.c
index ecb3822d4f70..a379c9061199 100644
--- a/init/calibrate.c
+++ b/init/calibrate.c
@@ -8,7 +8,9 @@
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/timex.h>
+#include <linux/smp.h>
 
+unsigned long lpj_fine;
 unsigned long preset_lpj;
 static int __init lpj_setup(char *str)
 {
@@ -33,9 +35,9 @@ static unsigned long __cpuinit calibrate_delay_direct(void)
         unsigned long pre_start, start, post_start;
         unsigned long pre_end, end, post_end;
         unsigned long start_jiffies;
-        unsigned long tsc_rate_min, tsc_rate_max;
-        unsigned long good_tsc_sum = 0;
-        unsigned long good_tsc_count = 0;
+        unsigned long timer_rate_min, timer_rate_max;
+        unsigned long good_timer_sum = 0;
+        unsigned long good_timer_count = 0;
         int i;
 
         if (read_current_timer(&pre_start) < 0 )
@@ -79,22 +81,24 @@ static unsigned long __cpuinit calibrate_delay_direct(void)
                 }
                 read_current_timer(&post_end);
 
-                tsc_rate_max = (post_end - pre_start) / DELAY_CALIBRATION_TICKS;
-                tsc_rate_min = (pre_end - post_start) / DELAY_CALIBRATION_TICKS;
+                timer_rate_max = (post_end - pre_start) /
+                                        DELAY_CALIBRATION_TICKS;
+                timer_rate_min = (pre_end - post_start) /
+                                        DELAY_CALIBRATION_TICKS;
 
                 /*
-                 * If the upper limit and lower limit of the tsc_rate is
+                 * If the upper limit and lower limit of the timer_rate is
                  * >= 12.5% apart, redo calibration.
                  */
                 if (pre_start != 0 && pre_end != 0 &&
-                    (tsc_rate_max - tsc_rate_min) < (tsc_rate_max >> 3)) {
-                        good_tsc_count++;
-                        good_tsc_sum += tsc_rate_max;
+                    (timer_rate_max - timer_rate_min) < (timer_rate_max >> 3)) {
+                        good_timer_count++;
+                        good_timer_sum += timer_rate_max;
                 }
         }
 
-        if (good_tsc_count)
-                return (good_tsc_sum/good_tsc_count);
+        if (good_timer_count)
+                return (good_timer_sum/good_timer_count);
 
         printk(KERN_WARNING "calibrate_delay_direct() failed to get a good "
                "estimate for loops_per_jiffy.\nProbably due to long platform interrupts. Consider using \"lpj=\" boot option.\n");
@@ -108,6 +112,10 @@ static unsigned long __cpuinit calibrate_delay_direct(void) {return 0;}
  * This is the number of bits of precision for the loops_per_jiffy.  Each
  * bit takes on average 1.5/HZ seconds.  This (like the original) is a little
  * better than 1%
+ * For the boot cpu we can skip the delay calibration and assign it a value
+ * calculated based on the timer frequency.
+ * For the rest of the CPUs we cannot assume that the timer frequency is same as
+ * the cpu frequency, hence do the calibration for those.
  */
 #define LPS_PREC 8
 
@@ -118,20 +126,20 @@ void __cpuinit calibrate_delay(void)
 
         if (preset_lpj) {
                 loops_per_jiffy = preset_lpj;
-                printk("Calibrating delay loop (skipped)... "
-                        "%lu.%02lu BogoMIPS preset\n",
-                        loops_per_jiffy/(500000/HZ),
-                        (loops_per_jiffy/(5000/HZ)) % 100);
+                printk(KERN_INFO
+                        "Calibrating delay loop (skipped) preset value.. ");
+        } else if ((smp_processor_id() == 0) && lpj_fine) {
+                loops_per_jiffy = lpj_fine;
+                printk(KERN_INFO
+                        "Calibrating delay loop (skipped), "
+                        "value calculated using timer frequency.. ");
         } else if ((loops_per_jiffy = calibrate_delay_direct()) != 0) {
-                printk("Calibrating delay using timer specific routine.. ");
-                printk("%lu.%02lu BogoMIPS (lpj=%lu)\n",
-                        loops_per_jiffy/(500000/HZ),
-                        (loops_per_jiffy/(5000/HZ)) % 100,
-                        loops_per_jiffy);
+                printk(KERN_INFO
+                        "Calibrating delay using timer specific routine.. ");
         } else {
                 loops_per_jiffy = (1<<12);
 
-                printk(KERN_DEBUG "Calibrating delay loop... ");
+                printk(KERN_INFO "Calibrating delay loop... ");
                 while ((loops_per_jiffy <<= 1) != 0) {
                         /* wait for "start of" clock tick */
                         ticks = jiffies;
@@ -161,12 +169,8 @@ void __cpuinit calibrate_delay(void)
                         if (jiffies != ticks)   /* longer than 1 tick */
                                 loops_per_jiffy &= ~loopbit;
                 }
-
-                /* Round the value and print it */
-                printk("%lu.%02lu BogoMIPS (lpj=%lu)\n",
-                        loops_per_jiffy/(500000/HZ),
-                        (loops_per_jiffy/(5000/HZ)) % 100,
-                        loops_per_jiffy);
         }
-
+        printk(KERN_CONT "%lu.%02lu BogoMIPS (lpj=%lu)\n",
+                        loops_per_jiffy/(500000/HZ),
+                        (loops_per_jiffy/(5000/HZ)) % 100, loops_per_jiffy);
 }
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 660c1e50c91b..d055b1914c3d 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -12,6 +12,7 @@
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/fs.h>
+#include <linux/initrd.h>
 
 #include <linux/nfs_fs.h>
 #include <linux/nfs_fs_sb.h>
@@ -22,7 +23,7 @@
 int __initdata rd_doload;       /* 1 = load RAM disk, 0 = don't load */
 
 int root_mountflags = MS_RDONLY | MS_SILENT;
-char * __initdata root_device_name;
+static char * __initdata root_device_name;
 static char __initdata saved_root_name[64];
 static int __initdata root_wait;
 
@@ -262,6 +263,10 @@ retry:
                 printk("Please append a correct \"root=\" boot option; here are the available partitions:\n");
 
                 printk_all_partitions();
+#ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT
+                printk("DEBUG_BLOCK_EXT_DEVT is enabled, you need to specify "
+                       "explicit textual name for \"root=\" boot option.\n");
+#endif
                 panic("VFS: Unable to mount root fs on %s", b);
         }
 
@@ -372,7 +377,8 @@ void __init prepare_namespace(void)
 
         if (saved_root_name[0]) {
                 root_device_name = saved_root_name;
-                if (!strncmp(root_device_name, "mtd", 3)) {
+                if (!strncmp(root_device_name, "mtd", 3) ||
+                    !strncmp(root_device_name, "ubi", 3)) {
                         mount_block_root(root_device_name, root_mountflags);
                         goto out;
                 }
diff --git a/init/do_mounts.h b/init/do_mounts.h
index 735705d137ff..9aa968d54329 100644
--- a/init/do_mounts.h
+++ b/init/do_mounts.h
@@ -11,7 +11,6 @@ void  change_floppy(char *fmt, ...);
 void  mount_block_root(char *name, int flags);
 void  mount_root(void);
 extern int root_mountflags;
-extern char *root_device_name;
 
 static inline int create_dev(char *name, dev_t dev)
 {
diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
index 693d24694a6c..48b3fadd83ed 100644
--- a/init/do_mounts_md.c
+++ b/init/do_mounts_md.c
@@ -12,7 +12,12 @@
  * The code for that is here.
  */
 
-static int __initdata raid_noautodetect, raid_autopart;
+#ifdef CONFIG_MD_AUTODETECT
+static int __initdata raid_noautodetect;
+#else
+static int __initdata raid_noautodetect=1;
+#endif
+static int __initdata raid_autopart;
 
 static struct {
         int minor;
@@ -252,6 +257,8 @@ static int __init raid_setup(char *str)
 
                 if (!strncmp(str, "noautodetect", wlen))
                         raid_noautodetect = 1;
+                if (!strncmp(str, "autodetect", wlen))
+                        raid_noautodetect = 0;
                 if (strncmp(str, "partitionable", wlen)==0)
                         raid_autopart = 1;
                 if (strncmp(str, "part", wlen)==0)
@@ -264,17 +271,32 @@ static int __init raid_setup(char *str)
 __setup("raid=", raid_setup);
 __setup("md=", md_setup);
 
+static void autodetect_raid(void)
+{
+        int fd;
+
+        /*
+         * Since we don't want to detect and use half a raid array, we need to
+         * wait for the known devices to complete their probing
+         */
+        printk(KERN_INFO "md: Waiting for all devices to be available before autodetect\n");
+        printk(KERN_INFO "md: If you don't use raid, use raid=noautodetect\n");
+        while (driver_probe_done() < 0)
+                msleep(100);
+        fd = sys_open("/dev/md0", 0, 0);
+        if (fd >= 0) {
+                sys_ioctl(fd, RAID_AUTORUN, raid_autopart);
+                sys_close(fd);
+        }
+}
+
 void __init md_run_setup(void)
 {
         create_dev("/dev/md0", MKDEV(MD_MAJOR, 0));
+
         if (raid_noautodetect)
-                printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=noautodetect)\n");
-        else {
-                int fd = sys_open("/dev/md0", 0, 0);
-                if (fd >= 0) {
-                        sys_ioctl(fd, RAID_AUTORUN, raid_autopart);
-                        sys_close(fd);
-                }
-        }
+                printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=autodetect will force)\n");
+        else
+                autodetect_raid();
         md_setup_drive();
 }
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index 46dfd64ae8fb..fedef93b586f 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -10,8 +10,6 @@
 
 #include "do_mounts.h"
 
-#define BUILD_CRAMDISK
-
 int __initdata rd_prompt = 1;/* 1 = prompt for RAM disk, 0 = don't prompt */
 
 static int __init prompt_ramdisk(char *str)
@@ -162,14 +160,8 @@ int __init rd_load_image(char *from)
                 goto done;
 
         if (nblocks == 0) {
-#ifdef BUILD_CRAMDISK
                 if (crd_load(in_fd, out_fd) == 0)
                         goto successful_load;
-#else
-                printk(KERN_NOTICE
-                       "RAMDISK: Kernel does not support compressed "
-                       "RAM disk images\n");
-#endif
                 goto done;
         }
 
@@ -267,8 +259,6 @@ int __init rd_load_disk(int n)
         return rd_load_image("/dev/root");
 }
 
-#ifdef BUILD_CRAMDISK
-
 /*
  * gzip declarations
  */
@@ -313,32 +303,11 @@ static int crd_infd, crd_outfd;
 
 static int  __init fill_inbuf(void);
 static void __init flush_window(void);
-static void __init *malloc(size_t size);
-static void __init free(void *where);
 static void __init error(char *m);
-static void __init gzip_mark(void **);
-static void __init gzip_release(void **);
-
-#include "../lib/inflate.c"
 
-static void __init *malloc(size_t size)
-{
-        return kmalloc(size, GFP_KERNEL);
-}
-
-static void __init free(void *where)
-{
-        kfree(where);
-}
-
-static void __init gzip_mark(void **ptr)
-{
-}
-
-static void __init gzip_release(void **ptr)
-{
-}
+#define NO_INFLATE_MALLOC
 
+#include "../lib/inflate.c"
 
 /* ===========================================================================
  * Fill the input buffer. This is called only when the buffer is empty
@@ -425,5 +394,3 @@ static int __init crd_load(int in_fd, int out_fd)
         kfree(window);
         return result;
 }
-
-#endif  /* BUILD_CRAMDISK */
diff --git a/init/initramfs.c b/init/initramfs.c
index 8eeeccb328c9..644fc01ad5f0 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -14,16 +14,6 @@ static void __init error(char *x)
                 message = x;
 }
 
-static void __init *malloc(size_t size)
-{
-        return kmalloc(size, GFP_KERNEL);
-}
-
-static void __init free(void *where)
-{
-        kfree(where);
-}
-
 /* link hash */
 
 #define N_ALIGN(len) ((((len) + 1) & ~3) + 2)
@@ -407,18 +397,10 @@ static long bytes_out;
 
 static void __init flush_window(void);
 static void __init error(char *m);
-static void __init gzip_mark(void **);
-static void __init gzip_release(void **);
 
-#include "../lib/inflate.c"
+#define NO_INFLATE_MALLOC
 
-static void __init gzip_mark(void **ptr)
-{
-}
-
-static void __init gzip_release(void **ptr)
-{
-}
+#include "../lib/inflate.c"
 
 /* ===========================================================================
  * Write the output window window[0..outcnt-1] and update crc and bytes_out.
diff --git a/init/main.c b/init/main.c
index b44e4eb0f5e3..6aaff34a38c0 100644
--- a/init/main.c
+++ b/init/main.c
@@ -23,7 +23,6 @@
 #include <linux/init.h>
 #include <linux/smp_lock.h>
 #include <linux/initrd.h>
-#include <linux/hdreg.h>
 #include <linux/bootmem.h>
 #include <linux/tty.h>
 #include <linux/gfp.h>
@@ -32,6 +31,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/start_kernel.h>
 #include <linux/security.h>
+#include <linux/smp.h>
 #include <linux/workqueue.h>
 #include <linux/profile.h>
 #include <linux/rcupdate.h>
@@ -87,8 +87,6 @@ extern void init_IRQ(void);
 extern void fork_init(unsigned long);
 extern void mca_init(void);
 extern void sbus_init(void);
-extern void pidhash_init(void);
-extern void pidmap_init(void);
 extern void prio_tree_init(void);
 extern void radix_tree_init(void);
 extern void free_initmem(void);
@@ -415,6 +413,13 @@ static void __init smp_init(void)
 {
         unsigned int cpu;
 
+        /*
+         * Set up the current CPU as possible to migrate to.
+         * The other ones will be done by cpu_up/cpu_down()
+         */
+        cpu = smp_processor_id();
+        cpu_set(cpu, cpu_active_map);
+
         /* FIXME: This should be done in userspace --RR */
         for_each_present_cpu(cpu) {
                 if (num_online_cpus() >= setup_max_cpus)
@@ -636,9 +641,11 @@ asmlinkage void __init start_kernel(void)
 
 #ifdef CONFIG_BLK_DEV_INITRD
         if (initrd_start && !initrd_below_start_ok &&
-                        initrd_start < min_low_pfn << PAGE_SHIFT) {
+            page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {
                 printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
-                    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
+                    "disabling it.\n",
+                    page_to_pfn(virt_to_page((void *)initrd_start)),
+                    min_low_pfn);
                 initrd_start = 0;
         }
 #endif
@@ -691,7 +698,7 @@ asmlinkage void __init start_kernel(void)
         rest_init();
 }
 
-static int __initdata initcall_debug;
+static int initcall_debug;
 
 static int __init initcall_debug_setup(char *str)
 {
@@ -700,7 +707,7 @@ static int __init initcall_debug_setup(char *str)
 }
 __setup("initcall_debug", initcall_debug_setup);
 
-static void __init do_one_initcall(initcall_t fn)
+int do_one_initcall(initcall_t fn)
 {
         int count = preempt_count();
         ktime_t t0, t1, delta;
@@ -708,7 +715,7 @@ static void __init do_one_initcall(initcall_t fn)
         int result;
 
         if (initcall_debug) {
-                print_fn_descriptor_symbol("calling  %s\n", fn);
+                printk("calling  %pF @ %i\n", fn, task_pid_nr(current));
                 t0 = ktime_get();
         }
 
@@ -718,8 +725,8 @@ static void __init do_one_initcall(initcall_t fn)
                 t1 = ktime_get();
                 delta = ktime_sub(t1, t0);
 
-                print_fn_descriptor_symbol("initcall %s", fn);
-                printk(" returned %d after %Ld msecs\n", result,
+                printk("initcall %pF returned %d after %Ld msecs\n",
+                        fn, result,
                         (unsigned long long) delta.tv64 >> 20);
         }
 
@@ -737,19 +744,20 @@ static void __init do_one_initcall(initcall_t fn)
                 local_irq_enable();
         }
         if (msgbuf[0]) {
-                print_fn_descriptor_symbol(KERN_WARNING "initcall %s", fn);
-                printk(" returned with %s\n", msgbuf);
+                printk("initcall %pF returned with %s\n", fn, msgbuf);
         }
+
+        return result;
 }
 
 
-extern initcall_t __initcall_start[], __initcall_end[];
+extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[];
 
 static void __init do_initcalls(void)
 {
         initcall_t *call;
 
-        for (call = __initcall_start; call < __initcall_end; call++)
+        for (call = __early_initcall_end; call < __initcall_end; call++)
                 do_one_initcall(*call);
 
         /* Make sure there is no pending stuff from the initcall sequence */
@@ -765,6 +773,7 @@ static void __init do_initcalls(void)
  */
 static void __init do_basic_setup(void)
 {
+        rcu_init_sched(); /* needed by module_init stage. */
         /* drivers will send hotplug events */
         init_workqueues();
         usermodehelper_init();
@@ -773,23 +782,12 @@ static void __init do_basic_setup(void)
         do_initcalls();
 }
 
-static int __initdata nosoftlockup;
-
-static int __init nosoftlockup_setup(char *str)
-{
-        nosoftlockup = 1;
-        return 1;
-}
-__setup("nosoftlockup", nosoftlockup_setup);
-
 static void __init do_pre_smp_initcalls(void)
 {
-        extern int spawn_ksoftirqd(void);
+        initcall_t *call;
 
-        migration_init();
-        spawn_ksoftirqd();
-        if (!nosoftlockup)
-                spawn_softlockup_task();
+        for (call = __initcall_start; call < __early_initcall_end; call++)
+                do_one_initcall(*call);
 }
 
 static void run_init_process(char *init_filename)
diff --git a/init/version.c b/init/version.c
index 9d17d70ee02d..52a8b98642b8 100644
--- a/init/version.c
+++ b/init/version.c
@@ -13,10 +13,13 @@
 #include <linux/utsrelease.h>
 #include <linux/version.h>
 
+#ifndef CONFIG_KALLSYMS
 #define version(a) Version_ ## a
 #define version_string(a) version(a)
 
+extern int version_string(LINUX_VERSION_CODE);
 int version_string(LINUX_VERSION_CODE);
+#endif
 
 struct uts_namespace init_uts_ns = {
         .kref = {