10 files changed, 68 insertions, 23 deletions

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 9908d477ccd9..d6781ce687e2 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -75,7 +75,7 @@ config ARCH_USES_GETTIMEOFFSET
 
 config GENERIC_CMOS_UPDATE
         bool
-        default y if SPARC64
+        default y
 
 config GENERIC_CLOCKEVENTS
         bool
diff --git a/arch/sparc/include/asm/atomic_32.h b/arch/sparc/include/asm/atomic_32.h
index f0d343c3b956..7ae128b19d3f 100644
--- a/arch/sparc/include/asm/atomic_32.h
+++ b/arch/sparc/include/asm/atomic_32.h
@@ -25,7 +25,7 @@ extern int atomic_cmpxchg(atomic_t *, int, int);
 extern int atomic_add_unless(atomic_t *, int, int);
 extern void atomic_set(atomic_t *, int);
 
-#define atomic_read(v)          ((v)->counter)
+#define atomic_read(v)          (*(volatile int *)&(v)->counter)
 
 #define atomic_add(i, v)        ((void)__atomic_add_return( (int)(i), (v)))
 #define atomic_sub(i, v)        ((void)__atomic_add_return(-(int)(i), (v)))
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index f2e48009989e..2050ca02c423 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -13,8 +13,8 @@
 #define ATOMIC_INIT(i)          { (i) }
 #define ATOMIC64_INIT(i)        { (i) }
 
-#define atomic_read(v)          ((v)->counter)
-#define atomic64_read(v)        ((v)->counter)
+#define atomic_read(v)          (*(volatile int *)&(v)->counter)
+#define atomic64_read(v)        (*(volatile long *)&(v)->counter)
 
 #define atomic_set(v, i)        (((v)->counter) = i)
 #define atomic64_set(v, i)      (((v)->counter) = i)
diff --git a/arch/sparc/include/asm/bitops_64.h b/arch/sparc/include/asm/bitops_64.h
index e72ac9cdfb98..766121a67a24 100644
--- a/arch/sparc/include/asm/bitops_64.h
+++ b/arch/sparc/include/asm/bitops_64.h
@@ -44,7 +44,7 @@ extern void change_bit(unsigned long nr, volatile unsigned long *addr);
 
 #ifdef ULTRA_HAS_POPULATION_COUNT
 
-static inline unsigned int hweight64(unsigned long w)
+static inline unsigned int __arch_hweight64(unsigned long w)
 {
         unsigned int res;
 
@@ -52,7 +52,7 @@ static inline unsigned int hweight64(unsigned long w)
         return res;
 }
 
-static inline unsigned int hweight32(unsigned int w)
+static inline unsigned int __arch_hweight32(unsigned int w)
 {
         unsigned int res;
 
@@ -60,7 +60,7 @@ static inline unsigned int hweight32(unsigned int w)
         return res;
 }
 
-static inline unsigned int hweight16(unsigned int w)
+static inline unsigned int __arch_hweight16(unsigned int w)
 {
         unsigned int res;
 
@@ -68,7 +68,7 @@ static inline unsigned int hweight16(unsigned int w)
         return res;
 }
 
-static inline unsigned int hweight8(unsigned int w)
+static inline unsigned int __arch_hweight8(unsigned int w)
 {
         unsigned int res;
 
@@ -78,9 +78,10 @@ static inline unsigned int hweight8(unsigned int w)
 
 #else
 
-#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/arch_hweight.h>
 
 #endif
+#include <asm-generic/bitops/const_hweight.h>
 #include <asm-generic/bitops/lock.h>
 #endif /* __KERNEL__ */
 
diff --git a/arch/sparc/include/asm/cache.h b/arch/sparc/include/asm/cache.h
index 41f85ae4bd4a..78b07009f60a 100644
--- a/arch/sparc/include/asm/cache.h
+++ b/arch/sparc/include/asm/cache.h
@@ -7,6 +7,8 @@
 #ifndef _SPARC_CACHE_H
 #define _SPARC_CACHE_H
 
+#define ARCH_SLAB_MINALIGN      __alignof__(unsigned long long)
+
 #define L1_CACHE_SHIFT 5
 #define L1_CACHE_BYTES 32
 #define L1_CACHE_ALIGN(x) ((((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1)))
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index e2771939341d..34ce49f80eac 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -14,6 +14,7 @@
 
 #include <linux/perf_event.h>
 #include <linux/kprobes.h>
+#include <linux/ftrace.h>
 #include <linux/kernel.h>
 #include <linux/kdebug.h>
 #include <linux/mutex.h>
@@ -1276,6 +1277,9 @@ static void perf_callchain_kernel(struct pt_regs *regs,
                                   struct perf_callchain_entry *entry)
 {
         unsigned long ksp, fp;
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+        int graph = 0;
+#endif
 
         callchain_store(entry, PERF_CONTEXT_KERNEL);
         callchain_store(entry, regs->tpc);
@@ -1303,6 +1307,16 @@ static void perf_callchain_kernel(struct pt_regs *regs,
                         fp = (unsigned long)sf->fp + STACK_BIAS;
                 }
                 callchain_store(entry, pc);
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+                if ((pc + 8UL) == (unsigned long) &return_to_handler) {
+                        int index = current->curr_ret_stack;
+                        if (current->ret_stack && index >= graph) {
+                                pc = current->ret_stack[index - graph].ret;
+                                callchain_store(entry, pc);
+                                graph++;
+                        }
+                }
+#endif
         } while (entry->nr < PERF_MAX_STACK_DEPTH);
 }
 
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index a5cf3864b31f..dbe81a368b45 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -202,6 +202,7 @@ void show_regs(struct pt_regs *regs)
                regs->u_regs[15]);
         printk("RPC: <%pS>\n", (void *) regs->u_regs[15]);
         show_regwindow(regs);
+        show_stack(current, (unsigned long *) regs->u_regs[UREG_FP]);
 }
 
 struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
diff --git a/arch/sparc/kernel/stacktrace.c b/arch/sparc/kernel/stacktrace.c
index acb12f673757..3e0815349630 100644
--- a/arch/sparc/kernel/stacktrace.c
+++ b/arch/sparc/kernel/stacktrace.c
@@ -1,6 +1,7 @@
 #include <linux/sched.h>
 #include <linux/stacktrace.h>
 #include <linux/thread_info.h>
+#include <linux/ftrace.h>
 #include <linux/module.h>
 #include <asm/ptrace.h>
 #include <asm/stacktrace.h>
@@ -12,6 +13,10 @@ static void __save_stack_trace(struct thread_info *tp,
                                bool skip_sched)
 {
         unsigned long ksp, fp;
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+        struct task_struct *t;
+        int graph = 0;
+#endif
 
         if (tp == current_thread_info()) {
                 stack_trace_flush();
@@ -21,6 +26,9 @@ static void __save_stack_trace(struct thread_info *tp,
         }
 
         fp = ksp + STACK_BIAS;
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+        t = tp->task;
+#endif
         do {
                 struct sparc_stackf *sf;
                 struct pt_regs *regs;
@@ -44,8 +52,21 @@ static void __save_stack_trace(struct thread_info *tp,
 
                 if (trace->skip > 0)
                         trace->skip--;
-                else if (!skip_sched || !in_sched_functions(pc))
+                else if (!skip_sched || !in_sched_functions(pc)) {
                         trace->entries[trace->nr_entries++] = pc;
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+                        if ((pc + 8UL) == (unsigned long) &return_to_handler) {
+                                int index = t->curr_ret_stack;
+                                if (t->ret_stack && index >= graph) {
+                                        pc = t->ret_stack[index - graph].ret;
+                                        if (trace->nr_entries <
+                                            trace->max_entries)
+                                                trace->entries[trace->nr_entries++] = pc;
+                                        graph++;
+                                }
+                        }
+#endif
+                }
         } while (trace->nr_entries < trace->max_entries);
 }
 
diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c
index 0d4c09b15efc..4453003032b5 100644
--- a/arch/sparc/kernel/time_32.c
+++ b/arch/sparc/kernel/time_32.c
@@ -78,6 +78,11 @@ __volatile__ unsigned int *master_l10_counter;
 
 u32 (*do_arch_gettimeoffset)(void);
 
+int update_persistent_clock(struct timespec now)
+{
+        return set_rtc_mmss(now.tv_sec);
+}
+
 /*
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
@@ -87,9 +92,6 @@ u32 (*do_arch_gettimeoffset)(void);
 
 static irqreturn_t timer_interrupt(int dummy, void *dev_id)
 {
-        /* last time the cmos clock got updated */
-        static long last_rtc_update;
-
 #ifndef CONFIG_SMP
         profile_tick(CPU_PROFILING);
 #endif
@@ -101,16 +103,6 @@ static irqreturn_t timer_interrupt(int dummy, void *dev_id)
 
         do_timer(1);
 
-        /* Determine when to update the Mostek clock. */
-        if (ntp_synced() &&
-            xtime.tv_sec > last_rtc_update + 660 &&
-            (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 &&
-            (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) {
-          if (set_rtc_mmss(xtime.tv_sec) == 0)
-            last_rtc_update = xtime.tv_sec;
-          else
-            last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */
-        }
         write_sequnlock(&xtime_lock);
 
 #ifndef CONFIG_SMP
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index 9da57f032983..42ad2ba85010 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -17,6 +17,7 @@
 #include <linux/mm.h>
 #include <linux/init.h>
 #include <linux/kdebug.h>
+#include <linux/ftrace.h>
 #include <linux/gfp.h>
 
 #include <asm/smp.h>
@@ -2154,6 +2155,9 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
         unsigned long fp, thread_base, ksp;
         struct thread_info *tp;
         int count = 0;
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+        int graph = 0;
+#endif
 
         ksp = (unsigned long) _ksp;
         if (!tsk)
@@ -2193,6 +2197,16 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
                 }
 
                 printk(" [%016lx] %pS\n", pc, (void *) pc);
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+                if ((pc + 8UL) == (unsigned long) &return_to_handler) {
+                        int index = tsk->curr_ret_stack;
+                        if (tsk->ret_stack && index >= graph) {
+                                pc = tsk->ret_stack[index - graph].ret;
+                                printk(" [%016lx] %pS\n", pc, (void *) pc);
+                                graph++;
+                        }
+                }
+#endif
         } while (++count < 16);
 }