Merge 'Linux v3.0' into Litmus

Some notes:
* Litmus^RT scheduling class is the topmost scheduling class
  (above stop_sched_class).
* scheduler_ipi() function (e.g., in smp_reschedule_interrupt())
  may increase IPI latencies.
* Added path into schedule() to quickly re-evaluate scheduling
  decision without becoming preemptive again. This used to be
  a standard path before the removal of BKL.

Conflicts:
	Makefile
	arch/arm/kernel/calls.S
	arch/arm/kernel/smp.c
	arch/x86/include/asm/unistd_32.h
	arch/x86/kernel/smp.c
	arch/x86/kernel/syscall_table_32.S
	include/linux/hrtimer.h
	kernel/printk.c
	kernel/sched.c
	kernel/sched_fair.c

1 files changed, 56 insertions, 14 deletions

diff --git a/include/linux/module.h b/include/linux/module.h
index aace066bad8f..d9ca2d5dc6d0 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -58,6 +58,15 @@ struct module_attribute {
         void (*free)(struct module *);
 };
 
+struct module_version_attribute {
+        struct module_attribute mattr;
+        const char *module_name;
+        const char *version;
+} __attribute__ ((__aligned__(sizeof(void *))));
+
+extern ssize_t __modver_version_show(struct module_attribute *,
+                                     struct module *, char *);
+
 struct module_kobject
 {
         struct kobject kobj;
@@ -161,7 +170,26 @@ extern struct module __this_module;
   Using this automatically adds a checksum of the .c files and the
   local headers in "srcversion".
 */
+
+#if defined(MODULE) || !defined(CONFIG_SYSFS)
 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
+#else
+#define MODULE_VERSION(_version)                                        \
+        static struct module_version_attribute ___modver_attr = {       \
+                .mattr  = {                                             \
+                        .attr   = {                                     \
+                                .name   = "version",                    \
+                                .mode   = S_IRUGO,                      \
+                        },                                              \
+                        .show   = __modver_version_show,                \
+                },                                                      \
+                .module_name    = KBUILD_MODNAME,                       \
+                .version        = _version,                             \
+        };                                                              \
+        static const struct module_version_attribute                    \
+        __used __attribute__ ((__section__ ("__modver")))               \
+        * __moduleparam_const __modver_attr = &___modver_attr
+#endif
 
 /* Optional firmware file (or files) needed by the module
  * format is simply firmware file name.  Multiple firmware
@@ -196,7 +224,7 @@ struct module_use {
         extern void *__crc_##sym __attribute__((weak));         \
         static const unsigned long __kcrctab_##sym              \
         __used                                                  \
-        __attribute__((section("__kcrctab" sec), unused))       \
+        __attribute__((section("___kcrctab" sec "+" #sym), unused))     \
         = (unsigned long) &__crc_##sym;
 #else
 #define __CRC_SYMBOL(sym, sec)
@@ -211,7 +239,7 @@ struct module_use {
         = MODULE_SYMBOL_PREFIX #sym;                            \
         static const struct kernel_symbol __ksymtab_##sym       \
         __used                                                  \
-        __attribute__((section("__ksymtab" sec), unused))       \
+        __attribute__((section("___ksymtab" sec "+" #sym), unused))     \
         = { (unsigned long)&sym, __kstrtab_##sym }
 
 #define EXPORT_SYMBOL(sym)                                      \
@@ -308,6 +336,9 @@ struct module
         /* The size of the executable code in each section.  */
         unsigned int init_text_size, core_text_size;
 
+        /* Size of RO sections of the module (text+rodata) */
+        unsigned int init_ro_size, core_ro_size;
+
         /* Arch-specific module values */
         struct mod_arch_specific arch;
 
@@ -337,31 +368,35 @@ struct module
         struct module_notes_attrs *notes_attrs;
 #endif
 
+        /* The command line arguments (may be mangled).  People like
+           keeping pointers to this stuff */
+        char *args;
+
 #ifdef CONFIG_SMP
         /* Per-cpu data. */
         void __percpu *percpu;
         unsigned int percpu_size;
 #endif
 
-        /* The command line arguments (may be mangled).  People like
-           keeping pointers to this stuff */
-        char *args;
 #ifdef CONFIG_TRACEPOINTS
-        struct tracepoint *tracepoints;
         unsigned int num_tracepoints;
+        struct tracepoint * const *tracepoints_ptrs;
+#endif
+#ifdef HAVE_JUMP_LABEL
+        struct jump_entry *jump_entries;
+        unsigned int num_jump_entries;
 #endif
-
 #ifdef CONFIG_TRACING
-        const char **trace_bprintk_fmt_start;
         unsigned int num_trace_bprintk_fmt;
+        const char **trace_bprintk_fmt_start;
 #endif
 #ifdef CONFIG_EVENT_TRACING
-        struct ftrace_event_call *trace_events;
+        struct ftrace_event_call **trace_events;
         unsigned int num_trace_events;
 #endif
 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
-        unsigned long *ftrace_callsites;
         unsigned int num_ftrace_callsites;
+        unsigned long *ftrace_callsites;
 #endif
 
 #ifdef CONFIG_MODULE_UNLOAD
@@ -442,8 +477,9 @@ const struct kernel_symbol *find_symbol(const char *name,
                                         bool warn);
 
 /* Walk the exported symbol table */
-bool each_symbol(bool (*fn)(const struct symsearch *arr, struct module *owner,
-                            unsigned int symnum, void *data), void *data);
+bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
+                                    struct module *owner,
+                                    void *data), void *data);
 
 /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
    symnum out of range. */
@@ -514,7 +550,7 @@ static inline void __module_get(struct module *module)
 #define symbol_put_addr(p) do { } while(0)
 
 #endif /* CONFIG_MODULE_UNLOAD */
-int use_module(struct module *a, struct module *b);
+int ref_module(struct module *a, struct module *b);
 
 /* This is a #define so the string doesn't get put in every .o file */
 #define module_name(mod)                        \
@@ -669,7 +705,6 @@ static inline int module_get_iter_tracepoints(struct tracepoint_iter *iter)
 {
         return 0;
 }
-
 #endif /* CONFIG_MODULES */
 
 #ifdef CONFIG_SYSFS
@@ -684,6 +719,13 @@ extern int module_sysfs_initialized;
 
 #define __MODULE_STRING(x) __stringify(x)
 
+#ifdef CONFIG_DEBUG_SET_MODULE_RONX
+extern void set_all_modules_text_rw(void);
+extern void set_all_modules_text_ro(void);
+#else
+static inline void set_all_modules_text_rw(void) { }
+static inline void set_all_modules_text_ro(void) { }
+#endif
 
 #ifdef CONFIG_GENERIC_BUG
 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,