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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-13 13:23:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-13 13:23:34 -0700
commit64f004a2ab68691b5a2e3db4cb460fcd31b6abc6 (patch)
tree1ecd5f72d0d5de9781d52f353f80898ac4fb8156 /arch
parentb48488d10954e0a337c41ea2e6086f274f118acf (diff)
parent6d4d1984df1ca6347414b9d8fa4783f548ee4cc8 (diff)
downloadkernel-64f004a2ab68691b5a2e3db4cb460fcd31b6abc6.tar.gz
Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 debug changes from Ingo Molnar: "Stack printing fixlets" * 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/kernel: Use kstack_end() in dumpstack_64.c x86/kernel: Fix output of show_stack_log_lvl()
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/dumpstack.c11
-rw-r--r--arch/x86/kernel/dumpstack_32.c9
-rw-r--r--arch/x86/kernel/dumpstack_64.c11
3 files changed, 19 insertions, 12 deletions
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index ab3b65639a3e..9c30acfadae2 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -25,10 +25,12 @@ unsigned int code_bytes = 64;
int kstack_depth_to_print = 3 * STACKSLOTS_PER_LINE;
static int die_counter;
-static void printk_stack_address(unsigned long address, int reliable)
+static void printk_stack_address(unsigned long address, int reliable,
+ void *data)
{
- pr_cont(" [<%p>] %s%pB\n",
- (void *)address, reliable ? "" : "? ", (void *)address);
+ printk("%s [<%p>] %s%pB\n",
+ (char *)data, (void *)address, reliable ? "" : "? ",
+ (void *)address);
}
void printk_address(unsigned long address)
@@ -155,8 +157,7 @@ static int print_trace_stack(void *data, char *name)
static void print_trace_address(void *data, unsigned long addr, int reliable)
{
touch_nmi_watchdog();
- printk(data);
- printk_stack_address(addr, reliable);
+ printk_stack_address(addr, reliable, data);
}
static const struct stacktrace_ops print_trace_ops = {
diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index 39891ff50d03..464ffd69b92e 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -108,9 +108,12 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
for (i = 0; i < kstack_depth_to_print; i++) {
if (kstack_end(stack))
break;
- if (i && ((i % STACKSLOTS_PER_LINE) == 0))
- pr_cont("\n");
- pr_cont(" %08lx", *stack++);
+ if ((i % STACKSLOTS_PER_LINE) == 0) {
+ if (i != 0)
+ pr_cont("\n");
+ printk("%s %08lx", log_lvl, *stack++);
+ } else
+ pr_cont(" %08lx", *stack++);
touch_nmi_watchdog();
}
pr_cont("\n");
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index ff86f19b5758..5f1c6266eb30 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -280,12 +280,15 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
pr_cont(" <EOI> ");
}
} else {
- if (((long) stack & (THREAD_SIZE-1)) == 0)
+ if (kstack_end(stack))
break;
}
- if (i && ((i % STACKSLOTS_PER_LINE) == 0))
- pr_cont("\n");
- pr_cont(" %016lx", *stack++);
+ if ((i % STACKSLOTS_PER_LINE) == 0) {
+ if (i != 0)
+ pr_cont("\n");
+ printk("%s %016lx", log_lvl, *stack++);
+ } else
+ pr_cont(" %016lx", *stack++);
touch_nmi_watchdog();
}
preempt_enable();