Commit 711f77f5 authored by Linus Torvalds's avatar Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc: Define ARCH_SLAB_MINALIGN
  drivers/sbus/char/flash.c: flash_read should update ppos instead of file->f_pos
  sparc64: Fix stack dumping and tracing when function graph is enabled.
  sparc64: Show stack backtrace from show_regs() just like other platforms.
parents 024a6b95 273fca0e
......@@ -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)))
......
......@@ -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);
}
......
......@@ -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];
......
#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);
}
......
......@@ -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);
}
......
......@@ -105,9 +105,9 @@ static ssize_t
flash_read(struct file * file, char __user * buf,
size_t count, loff_t *ppos)
{
unsigned long p = file->f_pos;
loff_t p = *ppos;
int i;
if (count > flash.read_size - p)
count = flash.read_size - p;
......@@ -118,7 +118,7 @@ flash_read(struct file * file, char __user * buf,
buf++;
}
file->f_pos += count;
*ppos += count;
return count;
}
......
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