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Commit 90edf27f authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge branch 'linus' into perf/core 



Conflicts:
	kernel/hw_breakpoint.c

Merge reason: resolve the conflict.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parents 41945f6c 8b15575c

arch/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -32,8 +32,9 @@ config HAVE_OPROFILE 


config KPROBES

	bool "Kprobes"

	depends on KALLSYMS && MODULES

	depends on MODULES

	depends on HAVE_KPROBES

	select KALLSYMS

	help

	  Kprobes allows you to trap at almost any kernel address and

	  execute a callback function.  register_kprobe() establishes
@@ -45,7 +46,6 @@ config OPTPROBES 
	def_bool y

	depends on KPROBES && HAVE_OPTPROBES

	depends on !PREEMPT

	select KALLSYMS_ALL



config HAVE_EFFICIENT_UNALIGNED_ACCESS

	bool

arch/x86/include/asm/hw_breakpoint.h

+1 −1
Original line number Diff line number Diff line
@@ -20,7 +20,7 @@ struct arch_hw_breakpoint { 
#include <linux/list.h>



/* Available HW breakpoint length encodings */

#define X86_BREAKPOINT_LEN_X		0x00

#define X86_BREAKPOINT_LEN_X		0x40

#define X86_BREAKPOINT_LEN_1		0x40

#define X86_BREAKPOINT_LEN_2		0x44

#define X86_BREAKPOINT_LEN_4		0x4c

arch/x86/kernel/hw_breakpoint.c

+19 −21
Original line number Diff line number Diff line
@@ -206,11 +206,27 @@ int arch_check_bp_in_kernelspace(struct perf_event *bp) 
int arch_bp_generic_fields(int x86_len, int x86_type,

			   int *gen_len, int *gen_type)

{

	/* Len */

	switch (x86_len) {

	case X86_BREAKPOINT_LEN_X:

	/* Type */

	switch (x86_type) {

	case X86_BREAKPOINT_EXECUTE:

		if (x86_len != X86_BREAKPOINT_LEN_X)

			return -EINVAL;



		*gen_type = HW_BREAKPOINT_X;

		*gen_len = sizeof(long);

		return 0;

	case X86_BREAKPOINT_WRITE:

		*gen_type = HW_BREAKPOINT_W;

		break;

	case X86_BREAKPOINT_RW:

		*gen_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;

		break;

	default:

		return -EINVAL;

	}



	/* Len */

	switch (x86_len) {

	case X86_BREAKPOINT_LEN_1:

		*gen_len = HW_BREAKPOINT_LEN_1;

		break;
@@ -229,21 +245,6 @@ int arch_bp_generic_fields(int x86_len, int x86_type, 
		return -EINVAL;

	}



	/* Type */

	switch (x86_type) {

	case X86_BREAKPOINT_EXECUTE:

		*gen_type = HW_BREAKPOINT_X;

		break;

	case X86_BREAKPOINT_WRITE:

		*gen_type = HW_BREAKPOINT_W;

		break;

	case X86_BREAKPOINT_RW:

		*gen_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;

		break;

	default:

		return -EINVAL;

	}



	return 0;

}
@@ -316,9 +317,6 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp) 
	ret = -EINVAL;



	switch (info->len) {

	case X86_BREAKPOINT_LEN_X:

		align = sizeof(long) -1;

		break;

	case X86_BREAKPOINT_LEN_1:

		align = 0;

		break;

arch/x86/lguest/boot.c

+8 −5
Original line number Diff line number Diff line
@@ -324,9 +324,8 @@ static void lguest_load_gdt(const struct desc_ptr *desc) 
}



/*

 * For a single GDT entry which changes, we do the lazy thing: alter our GDT,

 * then tell the Host to reload the entire thing.  This operation is so rare

 * that this naive implementation is reasonable.

 * For a single GDT entry which changes, we simply change our copy and

 * then tell the host about it.

 */

static void lguest_write_gdt_entry(struct desc_struct *dt, int entrynum,

				   const void *desc, int type)
@@ -338,9 +337,13 @@ static void lguest_write_gdt_entry(struct desc_struct *dt, int entrynum, 
}



/*

 * OK, I lied.  There are three "thread local storage" GDT entries which change

 * There are three "thread local storage" GDT entries which change

 * on every context switch (these three entries are how glibc implements

 * __thread variables).  So we have a hypercall specifically for this case.

 * __thread variables).  As an optimization, we have a hypercall

 * specifically for this case.

 *

 * Wouldn't it be nicer to have a general LOAD_GDT_ENTRIES hypercall

 * which took a range of entries?

 */

static void lguest_load_tls(struct thread_struct *t, unsigned int cpu)

{

arch/x86/oprofile/nmi_int.c

+3 −1
Original line number Diff line number Diff line
@@ -671,7 +671,9 @@ static int __init ppro_init(char **cpu_type) 
	case 14:

		*cpu_type = "i386/core";

		break;

	case 15: case 23:

	case 0x0f:

	case 0x16:

	case 0x17:

		*cpu_type = "i386/core_2";

		break;

	case 0x1a: