Merge branch 'linus' into core/debug

Conflicts:
	lib/vsprintf.c

Manual merge:

	include/linux/kernel.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>

14 files changed, 54 insertions, 106 deletions

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 64f5948ebc9d..946daea780f1 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -14,12 +14,13 @@ endif
 
 ifdef CONFIG_FTRACE
 # Do not trace early boot code
-CFLAGS_REMOVE_cputable.o = -pg
-CFLAGS_REMOVE_prom_init.o = -pg
+CFLAGS_REMOVE_cputable.o = -pg -mno-sched-epilog
+CFLAGS_REMOVE_prom_init.o = -pg -mno-sched-epilog
+CFLAGS_REMOVE_btext.o = -pg -mno-sched-epilog
 
 ifdef CONFIG_DYNAMIC_FTRACE
 # dynamic ftrace setup.
-CFLAGS_REMOVE_ftrace.o = -pg
+CFLAGS_REMOVE_ftrace.o = -pg -mno-sched-epilog
 endif
 
 endif
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 367129789cc0..5af4e9b2dbe2 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -647,7 +647,7 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
                        unsigned int flags, unsigned int length)
 {
         char *ptr = (char *) &current->thread.TS_FPR(reg);
-        int ret;
+        int ret = 0;
 
         flush_vsx_to_thread(current);
 
diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index e0debcca0bfa..a323c9b32ee1 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -86,6 +86,19 @@ static int __init parse_savemaxmem(char *p)
 }
 __setup("savemaxmem=", parse_savemaxmem);
 
+
+static size_t copy_oldmem_vaddr(void *vaddr, char *buf, size_t csize,
+                               unsigned long offset, int userbuf)
+{
+        if (userbuf) {
+                if (copy_to_user((char __user *)buf, (vaddr + offset), csize))
+                        return -EFAULT;
+        } else
+                memcpy(buf, (vaddr + offset), csize);
+
+        return csize;
+}
+
 /**
  * copy_oldmem_page - copy one page from "oldmem"
  * @pfn: page frame number to be copied
@@ -107,16 +120,16 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
         if (!csize)
                 return 0;
 
-        vaddr = __ioremap(pfn << PAGE_SHIFT, PAGE_SIZE, 0);
+        csize = min(csize, PAGE_SIZE);
 
-        if (userbuf) {
-                if (copy_to_user((char __user *)buf, (vaddr + offset), csize)) {
-                        iounmap(vaddr);
-                        return -EFAULT;
-                }
-        } else
-                memcpy(buf, (vaddr + offset), csize);
+        if (pfn < max_pfn) {
+                vaddr = __va(pfn << PAGE_SHIFT);
+                csize = copy_oldmem_vaddr(vaddr, buf, csize, offset, userbuf);
+        } else {
+                vaddr = __ioremap(pfn << PAGE_SHIFT, PAGE_SIZE, 0);
+                csize = copy_oldmem_vaddr(vaddr, buf, csize, offset, userbuf);
+                iounmap(vaddr);
+        }
 
-        iounmap(vaddr);
         return csize;
 }
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 99ee2f0f0f2b..8bb657519299 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -1155,7 +1155,7 @@ flush_tlbs:
         lis     r10, 0x40
 1:      addic.  r10, r10, -0x1000
         tlbie   r10
-        blt     1b
+        bgt     1b
         sync
         blr
 
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 9d42eb57aea3..a06362223f8d 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -233,17 +233,6 @@ void ibmebus_free_irq(u32 ist, void *dev_id)
 }
 EXPORT_SYMBOL(ibmebus_free_irq);
 
-static ssize_t name_show(struct device *dev,
-                         struct device_attribute *attr, char *buf)
-{
-        return sprintf(buf, "%s\n", to_of_device(dev)->node->name);
-}
-
-static struct device_attribute ibmebus_dev_attrs[] = {
-        __ATTR_RO(name),
-        __ATTR_NULL
-};
-
 static char *ibmebus_chomp(const char *in, size_t count)
 {
         char *out = kmalloc(count + 1, GFP_KERNEL);
@@ -327,7 +316,6 @@ static struct bus_attribute ibmebus_bus_attrs[] = {
 
 struct bus_type ibmebus_bus_type = {
         .uevent    = of_device_uevent,
-        .dev_attrs = ibmebus_dev_attrs,
         .bus_attrs = ibmebus_bus_attrs
 };
 EXPORT_SYMBOL(ibmebus_bus_type);
diff --git a/arch/powerpc/kernel/idle_6xx.S b/arch/powerpc/kernel/idle_6xx.S
index 019b02d8844f..15c611de1ee2 100644
--- a/arch/powerpc/kernel/idle_6xx.S
+++ b/arch/powerpc/kernel/idle_6xx.S
@@ -158,7 +158,7 @@ _GLOBAL(power_save_ppc32_restore)
         stw     r9,_NIP(r11)            /* make it do a blr */
 
 #ifdef CONFIG_SMP
-        mfspr   r12,SPRN_SPRG3
+        rlwinm  r12,r11,0,0,31-THREAD_SHIFT
         lwz     r11,TI_CPU(r12)         /* get cpu number * 4 */
         slwi    r11,r11,2
 #else
diff --git a/arch/powerpc/kernel/idle_e500.S b/arch/powerpc/kernel/idle_e500.S
index 06304034b393..47a1a983ff88 100644
--- a/arch/powerpc/kernel/idle_e500.S
+++ b/arch/powerpc/kernel/idle_e500.S
@@ -84,10 +84,11 @@ _GLOBAL(power_save_ppc32_restore)
         stw     r9,_NIP(r11)            /* make it do a blr */
 
 #ifdef CONFIG_SMP
-        mfspr   r12,SPRN_SPRG3
+        rlwinm  r12,r1,0,0,31-THREAD_SHIFT
         lwz     r11,TI_CPU(r12)         /* get cpu number * 4 */
         slwi    r11,r11,2
 #else
         li      r11,0
 #endif
+
         b       transfer_to_handler_cont
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 1a09719c7628..b3eef30b5131 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -416,6 +416,8 @@ static void pseries_cmo_data(struct seq_file *m)
         unsigned long cmo_faults = 0;
         unsigned long cmo_fault_time = 0;
 
+        seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO));
+
         if (!firmware_has_feature(FW_FEATURE_CMO))
                 return;
 
@@ -427,6 +429,9 @@ static void pseries_cmo_data(struct seq_file *m)
         seq_printf(m, "cmo_faults=%lu\n", cmo_faults);
         seq_printf(m, "cmo_fault_time_usec=%lu\n",
                    cmo_fault_time / tb_ticks_per_usec);
+        seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp());
+        seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp());
+        seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size());
 }
 
 static int pseries_lparcfg_data(struct seq_file *m, void *v)
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 6321ae36f729..7a6dfbca7682 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -899,7 +899,7 @@ relocate_new_kernel:
 
         /* set a new stack at the bottom of our page... */
         /* (not really needed now) */
-        addi    r1, r4, KEXEC_CONTROL_CODE_SIZE - 8 /* for LR Save+Back Chain */
+        addi    r1, r4, KEXEC_CONTROL_PAGE_SIZE - 8 /* for LR Save+Back Chain */
         stw     r0, 0(r1)
 
         /* Do the copies */
diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c
index af07003573c4..7ff292475269 100644
--- a/arch/powerpc/kernel/module.c
+++ b/arch/powerpc/kernel/module.c
@@ -99,18 +99,3 @@ void module_arch_cleanup(struct module *mod)
 {
         module_bug_cleanup(mod);
 }
-
-struct bug_entry *module_find_bug(unsigned long bugaddr)
-{
-        struct mod_arch_specific *mod;
-        unsigned int i;
-        struct bug_entry *bug;
-
-        list_for_each_entry(mod, &module_bug_list, bug_list) {
-                bug = mod->bug_table;
-                for (i = 0; i < mod->num_bugs; ++i, ++bug)
-                        if (bugaddr == bug->bug_addr)
-                                return bug;
-        }
-        return NULL;
-}
diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
index ee6a2982d567..ad79de272ff3 100644
--- a/arch/powerpc/kernel/module_64.c
+++ b/arch/powerpc/kernel/module_64.c
@@ -21,8 +21,9 @@
 #include <linux/err.h>
 #include <linux/vmalloc.h>
 #include <linux/bug.h>
+#include <linux/uaccess.h>
 #include <asm/module.h>
-#include <asm/uaccess.h>
+#include <asm/sections.h>
 #include <asm/firmware.h>
 #include <asm/code-patching.h>
 #include <linux/sort.h>
@@ -451,3 +452,13 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
 
         return 0;
 }
+
+void *dereference_function_descriptor(void *ptr)
+{
+        struct ppc64_opd_entry *desc = ptr;
+        void *p;
+
+        if (!probe_kernel_address(&desc->funcaddr, p))
+                ptr = p;
+        return ptr;
+}
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 709f8cb8bfca..d98634c76060 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -52,63 +52,6 @@
 #include <asm/ppc-pci.h>
 #include <asm/syscalls.h>
 
-struct old_linux_dirent32 {
-        u32             d_ino;
-        u32             d_offset;
-        unsigned short  d_namlen;
-        char            d_name[1];
-};
-
-struct readdir_callback32 {
-        struct old_linux_dirent32 __user * dirent;
-        int count;
-};
-
-static int fillonedir(void * __buf, const char * name, int namlen,
-                                  off_t offset, u64 ino, unsigned int d_type)
-{
-        struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
-        struct old_linux_dirent32 __user * dirent;
-        ino_t d_ino;
-
-        if (buf->count)
-                return -EINVAL;
-        d_ino = ino;
-        if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
-                return -EOVERFLOW;
-        buf->count++;
-        dirent = buf->dirent;
-        put_user(d_ino, &dirent->d_ino);
-        put_user(offset, &dirent->d_offset);
-        put_user(namlen, &dirent->d_namlen);
-        copy_to_user(dirent->d_name, name, namlen);
-        put_user(0, dirent->d_name + namlen);
-        return 0;
-}
-
-asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
-{
-        int error = -EBADF;
-        struct file * file;
-        struct readdir_callback32 buf;
-
-        file = fget(fd);
-        if (!file)
-                goto out;
-
-        buf.count = 0;
-        buf.dirent = dirent;
-
-        error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
-        if (error < 0)
-                goto out_putf;
-        error = buf.count;
-
-out_putf:
-        fput(file);
-out:
-        return error;
-}
 
 asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 22a3c33fd751..2750fbab1975 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -1113,7 +1113,7 @@ static int vio_bus_probe(struct device *dev)
                                 return error;
                 }
                 error = viodrv->probe(viodev, id);
-                if (error)
+                if (error && firmware_has_feature(FW_FEATURE_CMO))
                         vio_cmo_bus_remove(viodev);
         }
 
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 4a8ce62fe112..9f6c1ca1739e 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -66,11 +66,12 @@ SECTIONS
                 __got2_end = .;
 #endif /* CONFIG_PPC32 */
 
-                . = ALIGN(PAGE_SIZE);
-                _etext = .;
-                PROVIDE32 (etext = .);
         } :kernel
 
+        . = ALIGN(PAGE_SIZE);
+        _etext = .;
+        PROVIDE32 (etext = .);
+
         /* Read-only data */
         RODATA