xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge commit 'v2.6.27-rc8' into oprofile

Browse Source 
Conflicts:
	arch/x86/oprofile/nmi_int.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2008-09-30 12:16:26 +02:00
parent 45f197ade7 94aca1dac6
commit 59293c8ad5
1553 changed files with 40995 additions and 16515 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
arch/x86/oprofile/nmi_int.c
View File

@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/moduleparam.h>
#include <linux/kdebug.h>
#include <linux/cpu.h>
#include <asm/nmi.h>
#include <asm/msr.h>
#include <asm/apic.h>
@@ -31,27 +32,50 @@ static DEFINE_PER_CPU(unsigned long, saved_lvtpc);
static int nmi_start(void);
static void nmi_stop(void);
static void nmi_cpu_start(void *dummy);
static void nmi_cpu_stop(void *dummy);
static void nmi_cpu_save_mpx_registers(struct op_msrs *msrs);
static void nmi_cpu_restore_mpx_registers(struct op_msrs *msrs);
static void nmi_cpu_stop(void *dummy);
static void nmi_cpu_start(void *dummy);
/* 0 == registered but off, 1 == registered and on */
static int nmi_enabled = 0;
#ifdef CONFIG_SMP
static int oprofile_cpu_notifier(struct notifier_block *b, unsigned long action,
void *data)
{
int cpu = (unsigned long)data;
switch (action) {
case CPU_DOWN_FAILED:
case CPU_ONLINE:
smp_call_function_single(cpu, nmi_cpu_start, NULL, 0);
break;
case CPU_DOWN_PREPARE:
smp_call_function_single(cpu, nmi_cpu_stop, NULL, 1);
break;
}
return NOTIFY_DONE;
}
static struct notifier_block oprofile_cpu_nb = {
.notifier_call = oprofile_cpu_notifier
};
#endif
#ifdef CONFIG_PM
static int nmi_suspend(struct sys_device *dev, pm_message_t state)
{
/* Only one CPU left, just stop that one */
if (nmi_enabled == 1)
nmi_stop();
nmi_cpu_stop(NULL);
return 0;
}
static int nmi_resume(struct sys_device *dev)
{
if (nmi_enabled == 1)
nmi_start();
nmi_cpu_start(NULL);
return 0;
}
@@ -351,10 +375,12 @@ static void nmi_cpu_shutdown(void *dummy)
static void nmi_shutdown(void)
{
struct op_msrs *msrs = &get_cpu_var(cpu_msrs);
struct op_msrs *msrs;
nmi_enabled = 0;
on_each_cpu(nmi_cpu_shutdown, NULL, 1);
unregister_die_notifier(&profile_exceptions_nb);
msrs = &get_cpu_var(cpu_msrs);
model->shutdown(msrs);
free_msrs();
put_cpu_var(cpu_msrs);
@@ -550,6 +576,9 @@ int __init op_nmi_init(struct oprofile_operations *ops)
return -ENODEV;
}
#ifdef CONFIG_SMP
register_cpu_notifier(&oprofile_cpu_nb);
#endif
/* default values, can be overwritten by model */
__raw_get_cpu_var(switch_index) = 0;
ops->create_files = nmi_create_files;
@@ -573,8 +602,12 @@ int __init op_nmi_init(struct oprofile_operations *ops)
void op_nmi_exit(void)
{
if (using_nmi)
if (using_nmi) {
exit_sysfs();
#ifdef CONFIG_SMP
unregister_cpu_notifier(&oprofile_cpu_nb);
#endif
if (model->exit)
model->exit();
}
}