AcoSail/kernel_optimize_test
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86

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* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: fix APIC related bootup crash on Athlon XP CPUs
  time: add ADJ_OFFSET_SS_READ
  x86: export the symbol empty_zero_page on the 32-bit x86 architecture
  x86: fix kprobes_64.c inlining borkage
  pci: use pci=bfsort for HP DL385 G2, DL585 G2
  x86: correctly set UTS_MACHINE for "make ARCH=x86"
  lockdep: annotate do_debug() trap handler
  x86: turn off iommu merge by default
  x86: fix ACPI compile for LOCAL_APIC=n
  x86: printk kernel version in WARN_ON and other dump_stack users
  ACPI: Set max_cstate to 1 for early Opterons.
  x86: fix NMI watchdog & 'stopped time' problem
This commit is contained in:
Linus Torvalds 2007-11-26 19:41:28 -08:00
commit ff1ea52fa3
15 changed files with 91 additions and 10 deletions
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2
arch/x86/kernel/apic_32.c
View File

@ -789,7 +789,7 @@ void __init sync_Arb_IDs(void)
* Unsupported on P4 - see Intel Dev. Manual Vol. 3, Ch. 8.6.1 And not
* needed on AMD.
*/
if (modern_apic())
if (modern_apic() || boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
return;
/*
* Wait for idle.

2
arch/x86/kernel/i386_ksyms_32.c
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@ -2,6 +2,7 @@
#include <asm/semaphore.h>
#include <asm/checksum.h>
#include <asm/desc.h>
#include <asm/pgtable.h>
EXPORT_SYMBOL(__down_failed);
EXPORT_SYMBOL(__down_failed_interruptible);
@ -29,3 +30,4 @@ EXPORT_SYMBOL(__read_lock_failed);
#endif
EXPORT_SYMBOL(csum_partial);
EXPORT_SYMBOL(empty_zero_page);

12
arch/x86/kernel/io_apic_32.c
View File

@ -2166,6 +2166,10 @@ static inline void __init check_timer(void)
{
int apic1, pin1, apic2, pin2;
int vector;
unsigned int ver;
ver = apic_read(APIC_LVR);
ver = GET_APIC_VERSION(ver);
/*
* get/set the timer IRQ vector:
@ -2179,11 +2183,15 @@ static inline void __init check_timer(void)
* mode for the 8259A whenever interrupts are routed
* through I/O APICs. Also IRQ0 has to be enabled in
* the 8259A which implies the virtual wire has to be
* disabled in the local APIC.
* disabled in the local APIC. Finally timer interrupts
* need to be acknowledged manually in the 8259A for
* timer_interrupt() and for the i82489DX when using
* the NMI watchdog.
*/
apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
init_8259A(1);
timer_ack = 1;
timer_ack = !cpu_has_tsc;
timer_ack |= (nmi_watchdog == NMI_IO_APIC && !APIC_INTEGRATED(ver));
if (timer_over_8254 > 0)
enable_8259A_irq(0);

2
arch/x86/kernel/kprobes_64.c
View File

@ -58,7 +58,7 @@ const int kretprobe_blacklist_size = ARRAY_SIZE(kretprobe_blacklist);
/*
* returns non-zero if opcode modifies the interrupt flag.
*/
static __always_inline int is_IF_modifier(kprobe_opcode_t *insn)
static int __kprobes is_IF_modifier(kprobe_opcode_t *insn)
{
switch (*insn) {
case 0xfa: /* cli */

9
arch/x86/kernel/nmi_32.c
View File

@ -25,6 +25,7 @@
#include <asm/smp.h>
#include <asm/nmi.h>
#include <asm/timer.h>
#include "mach_traps.h"
@ -83,7 +84,7 @@ static int __init check_nmi_watchdog(void)
prev_nmi_count = kmalloc(NR_CPUS * sizeof(int), GFP_KERNEL);
if (!prev_nmi_count)
return -1;
goto error;
printk(KERN_INFO "Testing NMI watchdog ... ");
@ -117,7 +118,7 @@ static int __init check_nmi_watchdog(void)
if (!atomic_read(&nmi_active)) {
kfree(prev_nmi_count);
atomic_set(&nmi_active, -1);
return -1;
goto error;
}
printk("OK.\n");
@ -128,6 +129,10 @@ static int __init check_nmi_watchdog(void)
kfree(prev_nmi_count);
return 0;
error:
timer_ack = !cpu_has_tsc;
return -1;
}
/* This needs to happen later in boot so counters are working */
late_initcall(check_nmi_watchdog);

2
arch/x86/kernel/pci-dma_64.c
View File

@ -12,7 +12,7 @@
#include <asm/gart.h>
#include <asm/calgary.h>
int iommu_merge __read_mostly = 1;
int iommu_merge __read_mostly = 0;
EXPORT_SYMBOL(iommu_merge);
dma_addr_t bad_dma_address __read_mostly;

7
arch/x86/kernel/traps_32.c
View File

@ -283,6 +283,11 @@ void dump_stack(void)
{
unsigned long stack;
printk("Pid: %d, comm: %.20s %s %s %.*s\n",
current->pid, current->comm, print_tainted(),
init_utsname()->release,
(int)strcspn(init_utsname()->version, " "),
init_utsname()->version);
show_trace(current, NULL, &stack);
}
@ -828,6 +833,8 @@ fastcall void __kprobes do_debug(struct pt_regs * regs, long error_code)
unsigned int condition;
struct task_struct *tsk = current;
trace_hardirqs_fixup();
get_debugreg(condition, 6);
if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code,

9
arch/x86/kernel/traps_64.c
View File

@ -31,6 +31,7 @@
#include <linux/uaccess.h>
#include <linux/bug.h>
#include <linux/kdebug.h>
#include <linux/utsname.h>
#if defined(CONFIG_EDAC)
#include <linux/edac.h>
@ -400,6 +401,12 @@ void show_stack(struct task_struct *tsk, unsigned long * rsp)
void dump_stack(void)
{
unsigned long dummy;
printk("Pid: %d, comm: %.20s %s %s %.*s\n",
current->pid, current->comm, print_tainted(),
init_utsname()->release,
(int)strcspn(init_utsname()->version, " "),
init_utsname()->version);
show_trace(NULL, NULL, &dummy);
}
@ -846,6 +853,8 @@ asmlinkage void __kprobes do_debug(struct pt_regs * regs,
struct task_struct *tsk = current;
siginfo_t info;
trace_hardirqs_fixup();
get_debugreg(condition, 6);
if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code,

16
arch/x86/pci/common.c
View File

@ -315,6 +315,22 @@ static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
},
},
#endif
{
.callback = set_bf_sort,
.ident = "HP ProLiant DL385 G2",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "HP"),
DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL385 G2"),
},
},
{
.callback = set_bf_sort,
.ident = "HP ProLiant DL585 G2",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "HP"),
DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"),
},
},
{}
};

1
drivers/acpi/processor_idle.c
View File

@ -1673,6 +1673,7 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
if (!first_run) {
dmi_check_system(processor_power_dmi_table);
max_cstate = acpi_processor_cstate_check(max_cstate);
if (max_cstate < ACPI_C_STATES_MAX)
printk(KERN_NOTICE
"ACPI: processor limited to max C-state %d\n",

1
include/asm-ia64/acpi.h
View File

@ -94,6 +94,7 @@ ia64_acpi_release_global_lock (unsigned int *lock)
#define acpi_noirq 0 /* ACPI always enabled on IA64 */
#define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
#define acpi_strict 1 /* no ACPI spec workarounds on IA64 */
#define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
static inline void disable_acpi(void) { }
const char *acpi_get_sysname (void);

27
include/asm-x86/acpi.h
View File

@ -1,5 +1,32 @@
#ifndef _ASM_X86_ACPI_H
#define _ASM_X86_ACPI_H
#ifdef CONFIG_X86_32
# include "acpi_32.h"
#else
# include "acpi_64.h"
#endif
#include <asm/processor.h>
/*
* Check if the CPU can handle C2 and deeper
*/
static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
{
/*
* Early models (<=5) of AMD Opterons are not supposed to go into
* C2 state.
*
* Steppings 0x0A and later are good
*/
if (boot_cpu_data.x86 == 0x0F &&
boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
boot_cpu_data.x86_model <= 0x05 &&
boot_cpu_data.x86_mask < 0x0A)
return 1;
else
return max_cstate;
}
#endif

1
include/asm-x86/apic_32.h
View File

@ -120,6 +120,7 @@ extern int local_apic_timer_disabled;
#else /* !CONFIG_X86_LOCAL_APIC */
static inline void lapic_shutdown(void) { }
#define local_apic_timer_c2_ok 1
#endif /* !CONFIG_X86_LOCAL_APIC */

1
include/linux/timex.h
View File

@ -137,6 +137,7 @@ struct timex {
#define ADJ_TIMECONST 0x0020 /* pll time constant */
#define ADJ_TICK 0x4000 /* tick value */
#define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */
#define ADJ_OFFSET_SS_READ 0xa001 /* read-only adjtime */
/* xntp 3.4 compatibility names */
#define MOD_OFFSET ADJ_OFFSET

9
kernel/time/ntp.c
View File

@ -249,10 +249,12 @@ int do_adjtimex(struct timex *txc)
/* Now we validate the data before disabling interrupts */
if ((txc->modes & ADJ_OFFSET_SINGLESHOT) == ADJ_OFFSET_SINGLESHOT)
if ((txc->modes & ADJ_OFFSET_SINGLESHOT) == ADJ_OFFSET_SINGLESHOT) {
/* singleshot must not be used with any other mode bits */
if (txc->modes != ADJ_OFFSET_SINGLESHOT)
if (txc->modes != ADJ_OFFSET_SINGLESHOT &&
txc->modes != ADJ_OFFSET_SS_READ)
return -EINVAL;
}
if (txc->modes != ADJ_OFFSET_SINGLESHOT && (txc->modes & ADJ_OFFSET))
/* adjustment Offset limited to +- .512 seconds */
@ -372,7 +374,8 @@ int do_adjtimex(struct timex *txc)
leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0)
result = TIME_ERROR;
if ((txc->modes & ADJ_OFFSET_SINGLESHOT) == ADJ_OFFSET_SINGLESHOT)
if ((txc->modes == ADJ_OFFSET_SINGLESHOT) ||
(txc->modes == ADJ_OFFSET_SS_READ))
txc->offset = save_adjust;
else
txc->offset = ((long)shift_right(time_offset, SHIFT_UPDATE)) *