x86/cpu change for v3.5

GIT PULL Ingo Molnar 1 participant 1 message May 23, 2012

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x86 x86 stack unwinding

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Ingo Molnar

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2012-05-23 07:45 UTC #0 lore raw

Linus,

Please pull the latest x86-debug-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-debug-for-linus

HEAD: 57da8b960b9a25646a8ddb5a9c1d0b5978e69bec x86: Avoid double stack traces with show_regs()

Thanks,

Ingo

------------------>
Jan Beulich (1):
x86: Avoid double stack traces with show_regs()

 arch/x86/include/asm/kdebug.h  | 1 -
 arch/x86/kernel/dumpstack.c    | 2 +-
 arch/x86/kernel/dumpstack_32.c | 2 +-
 arch/x86/kernel/dumpstack_64.c | 2 +-
 arch/x86/kernel/kprobes.c      | 4 ++--
 arch/x86/kernel/nmi.c          | 2 +-
 arch/x86/kernel/process.c      | 6 ------
 7 files changed, 6 insertions(+), 13 deletions(-)

arch/x86/include/asm/kdebug.h +0 -1

index d73f157..2c37aad 100644
@@ -24,7 +24,6 @@ enum die_val {
 extern void printk_address(unsigned long address, int reliable);
 extern void die(const char *, struct pt_regs *,long);
 extern int __must_check __die(const char *, struct pt_regs *, long);
-extern void show_registers(struct pt_regs *regs);
 extern void show_trace(struct task_struct *t, struct pt_regs *regs,
 		       unsigned long *sp, unsigned long bp);
 extern void __show_regs(struct pt_regs *regs, int all);

arch/x86/kernel/dumpstack.c +1 -1

index 1b81839..40989da 100644
@@ -271,7 +271,7 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err)
 			current->thread.trap_nr, SIGSEGV) == NOTIFY_STOP)
 		return 1;
 
-	show_registers(regs);
+	show_regs(regs);
 #ifdef CONFIG_X86_32
 	if (user_mode_vm(regs)) {
 		sp = regs->sp;

arch/x86/kernel/dumpstack_32.c +1 -1

index 88ec912..e0b1d78 100644
@@ -82,7 +82,7 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
 }
 
 
-void show_registers(struct pt_regs *regs)
+void show_regs(struct pt_regs *regs)
 {
 	int i;

arch/x86/kernel/dumpstack_64.c +1 -1

index 17107bd..791b761 100644
@@ -245,7 +245,7 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
 	show_trace_log_lvl(task, regs, sp, bp, log_lvl);
 }
 
-void show_registers(struct pt_regs *regs)
+void show_regs(struct pt_regs *regs)
 {
 	int i;
 	unsigned long sp;

arch/x86/kernel/kprobes.c +2 -2

index e213fc8..e2f751e 100644
@@ -1037,9 +1037,9 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
 			       "current sp %p does not match saved sp %p\n",
 			       stack_addr(regs), kcb->jprobe_saved_sp);
 			printk(KERN_ERR "Saved registers for jprobe %p\n", jp);
-			show_registers(saved_regs);
+			show_regs(saved_regs);
 			printk(KERN_ERR "Current registers\n");
-			show_registers(regs);
+			show_regs(regs);
 			BUG();
 		}
 		*regs = kcb->jprobe_saved_regs;

arch/x86/kernel/nmi.c +1 -1

index 47acaf3..03c1345 100644
@@ -244,7 +244,7 @@ io_check_error(unsigned char reason, struct pt_regs *regs)
 	pr_emerg(
 	"NMI: IOCK error (debug interrupt?) for reason %02x on CPU %d.\n",
 		 reason, smp_processor_id());
-	show_registers(regs);
+	show_regs(regs);
 
 	if (panic_on_io_nmi)
 		panic("NMI IOCK error: Not continuing");

arch/x86/kernel/process.c +0 -6

index 1d92a5a..856d5bc 100644
@@ -105,12 +105,6 @@ void exit_thread(void)
 	}
 }
 
-void show_regs(struct pt_regs *regs)
-{
-	show_registers(regs);
-	show_trace(NULL, regs, (unsigned long *)kernel_stack_pointer(regs), 0);
-}
-
 void show_regs_common(void)
 {
 	const char *vendor, *product, *board;