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Commit 2f2fde92 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branches 'core-urgent-for-linus', 'perf-urgent-for-linus',... 

Merge branches 'core-urgent-for-linus', 'perf-urgent-for-linus', 'sched-urgent-for-linus' and 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  bugs, x86: Fix printk levels for panic, softlockups and stack dumps

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf top: Fix number of samples displayed
  perf tools: Fix strlen() bug in perf_event__synthesize_event_type()
  perf tools: Fix broken build by defining _GNU_SOURCE in Makefile
  x86/dumpstack: Remove unneeded check in dump_trace()
  perf: Fix broken interrupt rate throttling

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/rt: Fix task stack corruption under __ARCH_WANT_INTERRUPTS_ON_CTXSW
  sched: Fix ancient race in do_exit()
  sched/nohz: Fix nohz cpu idle load balancing state with cpu hotplug
  sched/s390: Fix compile error in sched/core.c
  sched: Fix rq->nr_uninterruptible update race

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/reboot: Remove VersaLogic Menlow reboot quirk
  x86/reboot: Skip DMI checks if reboot set by user
  x86: Properly parenthesize cmpxchg() macro arguments
parents bd3ce7d5 b0f4c4b3 45179fec cb297a3e e6d36a65

arch/x86/include/asm/cmpxchg.h

+3 −3
Original line number Original line Diff line number Diff line
@@ -145,13 +145,13 @@ extern void __add_wrong_size(void) 




#ifdef __HAVE_ARCH_CMPXCHG

#ifdef __HAVE_ARCH_CMPXCHG

#define cmpxchg(ptr, old, new)						\

#define cmpxchg(ptr, old, new)						\

	__cmpxchg((ptr), (old), (new), sizeof(*ptr))

	__cmpxchg(ptr, old, new, sizeof(*(ptr)))





#define sync_cmpxchg(ptr, old, new)					\

#define sync_cmpxchg(ptr, old, new)					\

	__sync_cmpxchg((ptr), (old), (new), sizeof(*ptr))

	__sync_cmpxchg(ptr, old, new, sizeof(*(ptr)))





#define cmpxchg_local(ptr, old, new)					\

#define cmpxchg_local(ptr, old, new)					\

	__cmpxchg_local((ptr), (old), (new), sizeof(*ptr))

	__cmpxchg_local(ptr, old, new, sizeof(*(ptr)))

#endif

#endif





/*

/*

arch/x86/kernel/dumpstack.c

+2 −1
Original line number Original line Diff line number Diff line
@@ -252,7 +252,8 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err) 
	unsigned short ss;

	unsigned short ss;

	unsigned long sp;

	unsigned long sp;

#endif

#endif

	printk(KERN_EMERG "%s: %04lx [#%d] ", str, err & 0xffff, ++die_counter);

	printk(KERN_DEFAULT

	       "%s: %04lx [#%d] ", str, err & 0xffff, ++die_counter);

#ifdef CONFIG_PREEMPT

#ifdef CONFIG_PREEMPT

	printk("PREEMPT ");

	printk("PREEMPT ");

#endif

#endif

arch/x86/kernel/dumpstack_64.c

+4 −4
Original line number Original line Diff line number Diff line
@@ -129,7 +129,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, 
	if (!stack) {

	if (!stack) {

		if (regs)

		if (regs)

			stack = (unsigned long *)regs->sp;

			stack = (unsigned long *)regs->sp;

		else if (task && task != current)

		else if (task != current)

			stack = (unsigned long *)task->thread.sp;

			stack = (unsigned long *)task->thread.sp;

		else

		else

			stack = &dummy;

			stack = &dummy;
@@ -269,11 +269,11 @@ void show_registers(struct pt_regs *regs) 
		unsigned char c;

		unsigned char c;

		u8 *ip;

		u8 *ip;





		printk(KERN_EMERG "Stack:\n");

		printk(KERN_DEFAULT "Stack:\n");

		show_stack_log_lvl(NULL, regs, (unsigned long *)sp,

		show_stack_log_lvl(NULL, regs, (unsigned long *)sp,

				   0, KERN_EMERG);

				   0, KERN_DEFAULT);





		printk(KERN_EMERG "Code: ");

		printk(KERN_DEFAULT "Code: ");





		ip = (u8 *)regs->ip - code_prologue;

		ip = (u8 *)regs->ip - code_prologue;

		if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {

		if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {

arch/x86/kernel/reboot.c

+26 −10
Original line number Original line Diff line number Diff line
@@ -39,6 +39,14 @@ static int reboot_mode; 
enum reboot_type reboot_type = BOOT_ACPI;

enum reboot_type reboot_type = BOOT_ACPI;

int reboot_force;

int reboot_force;





/* This variable is used privately to keep track of whether or not

 * reboot_type is still set to its default value (i.e., reboot= hasn't

 * been set on the command line).  This is needed so that we can

 * suppress DMI scanning for reboot quirks.  Without it, it's

 * impossible to override a faulty reboot quirk without recompiling.

 */

static int reboot_default = 1;



#if defined(CONFIG_X86_32) && defined(CONFIG_SMP)

#if defined(CONFIG_X86_32) && defined(CONFIG_SMP)

static int reboot_cpu = -1;

static int reboot_cpu = -1;

#endif

#endif
@@ -67,6 +75,12 @@ bool port_cf9_safe = false; 
static int __init reboot_setup(char *str)

static int __init reboot_setup(char *str)

{

{

	for (;;) {

	for (;;) {

		/* Having anything passed on the command line via

		 * reboot= will cause us to disable DMI checking

		 * below.

		 */

		reboot_default = 0;



		switch (*str) {

		switch (*str) {

		case 'w':

		case 'w':

			reboot_mode = 0x1234;

			reboot_mode = 0x1234;
@@ -295,14 +309,6 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = { 
			DMI_MATCH(DMI_BOARD_NAME, "P4S800"),

			DMI_MATCH(DMI_BOARD_NAME, "P4S800"),

		},

		},

	},

	},

	{	/* Handle problems with rebooting on VersaLogic Menlow boards */

		.callback = set_bios_reboot,

		.ident = "VersaLogic Menlow based board",

		.matches = {

			DMI_MATCH(DMI_BOARD_VENDOR, "VersaLogic Corporation"),

			DMI_MATCH(DMI_BOARD_NAME, "VersaLogic Menlow board"),

		},

	},

	{ /* Handle reboot issue on Acer Aspire one */

	{ /* Handle reboot issue on Acer Aspire one */

		.callback = set_kbd_reboot,

		.callback = set_kbd_reboot,

		.ident = "Acer Aspire One A110",

		.ident = "Acer Aspire One A110",
@@ -316,7 +322,12 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = { 




static int __init reboot_init(void)

static int __init reboot_init(void)

{

{

	/* Only do the DMI check if reboot_type hasn't been overridden

	 * on the command line

	 */

	if (reboot_default) {

		dmi_check_system(reboot_dmi_table);

		dmi_check_system(reboot_dmi_table);

	}

	return 0;

	return 0;

}

}

core_initcall(reboot_init);

core_initcall(reboot_init);
@@ -465,7 +476,12 @@ static struct dmi_system_id __initdata pci_reboot_dmi_table[] = { 




static int __init pci_reboot_init(void)

static int __init pci_reboot_init(void)

{

{

	/* Only do the DMI check if reboot_type hasn't been overridden

	 * on the command line

	 */

	if (reboot_default) {

		dmi_check_system(pci_reboot_dmi_table);

		dmi_check_system(pci_reboot_dmi_table);

	}

	return 0;

	return 0;

}

}

core_initcall(pci_reboot_init);

core_initcall(pci_reboot_init);

arch/x86/mm/fault.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -673,7 +673,7 @@ no_context(struct pt_regs *regs, unsigned long error_code, 




	stackend = end_of_stack(tsk);

	stackend = end_of_stack(tsk);

	if (tsk != &init_task && *stackend != STACK_END_MAGIC)

	if (tsk != &init_task && *stackend != STACK_END_MAGIC)

		printk(KERN_ALERT "Thread overran stack, or stack corrupted\n");

		printk(KERN_EMERG "Thread overran stack, or stack corrupted\n");





	tsk->thread.cr2		= address;

	tsk->thread.cr2		= address;

	tsk->thread.trap_no	= 14;

	tsk->thread.trap_no	= 14;
@@ -684,7 +684,7 @@ no_context(struct pt_regs *regs, unsigned long error_code, 
		sig = 0;

		sig = 0;





	/* Executive summary in case the body of the oops scrolled away */

	/* Executive summary in case the body of the oops scrolled away */

	printk(KERN_EMERG "CR2: %016lx\n", address);

	printk(KERN_DEFAULT "CR2: %016lx\n", address);





	oops_end(flags, regs, sig);

	oops_end(flags, regs, sig);

}

}