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john stultz 3f4a0b917c [PATCH] i386 Time: Avoid PIT SMP lockups ... Avoid possible PIT livelock issues seen on SMP systems (and reported by Andi), by not allowing it as a clocksource on SMP boxes. However, since the PIT may no longer be present, we have to properly handle the cases where SMP systems have TSC skew and fall back from the TSC. Since the PIT isn't there, it would "fall back" to the TSC again. So this changes the jiffies rating to 1, and the TSC-bad rating value to 0. Thus you will get the following behavior priority on i386 systems: tsc [if present & stable] hpet [if present] cyclone [if present] acpi_pm [if present] pit [if UP] jiffies Rather then the current more complicated: tsc [if present & stable] hpet [if present] cyclone [if present] acpi_pm [if present] pit [if cpus < 4] tsc [if present & unstable] jiffies Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
..
acpi	Pull sci into test branch	19 years ago
cpu	[PATCH] thermal throttle: sysfs error checking	19 years ago
.gitignore	…
Makefile	[PATCH] i386: Do stacktracer conversion too	19 years ago
alternative.c	[PATCH] lockdep: x86 smp alternatives workaround	19 years ago
apic.c	[PATCH] i386: irqs build fix	19 years ago
apm.c	[PATCH] kthread: convert arch/i386/kernel/apm.c	19 years ago
asm-offsets.c	[PATCH] vdso: randomize the i386 vDSO by moving it into a vma	19 years ago
bootflag.c	Remove obsolete #include <linux/config.h>	19 years ago
cpuid.c	[PATCH] Fix modular cpuid.ko	19 years ago
crash.c	[PATCH] stack overflow safe kdump: safe smp_send_nmi_allbutself()	19 years ago
crash_dump.c	…
doublefault.c	[PATCH] i386: cpu_relax() in crash.c and doublefault.c	19 years ago
early_printk.c	…
efi.c	BUG_ON cleanups in arch/i386	19 years ago
efi_stub.S	[PATCH] x86: remove unused include from efi_stub.S	19 years ago
entry.S	[PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder	19 years ago
head.S	[PATCH] i386: Do better early exception handlers	19 years ago
hpet.c	[PATCH] Fix faulty HPET clocksource usage (fix for bug #7062)	19 years ago
i386_ksyms.c	Remove obsolete #include <linux/config.h>	19 years ago
i387.c	Remove obsolete #include <linux/config.h>	19 years ago
i8237.c	[PATCH] mmc (mainly): add "or later" clause to licence statement.	19 years ago
i8253.c	[PATCH] i386 Time: Avoid PIT SMP lockups	19 years ago
i8259.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
init_task.c	[PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c	19 years ago
io_apic.c	[PATCH] use struct irq_chip instead of struct hw_interrupt_type	19 years ago
ioport.c	[PATCH] i386: use thread_info flags for debug regs and IO bitmaps	19 years ago
irq.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
kprobes.c	[PATCH] kretprobe spinlock deadlock patch	19 years ago
ldt.c	fix file specification in comments	19 years ago
machine_kexec.c	[PATCH] i386: Avoid overwriting the current pgd (V4, i386)	19 years ago
mca.c	[PATCH] i386: Disallow kprobes on NMI handlers	19 years ago
microcode.c	[PATCH] x86/microcode: handle sysfs error	19 years ago
module.c	…
mpparse.c	[PATCH] i386: Support physical cpu hotplug for x86_64	19 years ago
msr.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial	19 years ago
nmi.c	[PATCH] Some config.h removals	19 years ago
numaq.c	Remove obsolete #include <linux/config.h>	19 years ago
pci-dma.c	…
process.c	ACPI: Processor native C-states using MWAIT	19 years ago
ptrace.c	[PATCH] i386/x86-64: rename is_at_popf(), add iret to tests and fix	19 years ago
quirks.c	Remove obsolete #include <linux/config.h>	19 years ago
reboot.c	[PATCH] x86: remove locally-defined ldt structure in favour of standard type	19 years ago
reboot_fixups.c	…
relocate_kernel.S	[PATCH] i386: Avoid overwriting the current pgd (V4, i386)	19 years ago
scx200.c	Remove obsolete #include <linux/config.h>	19 years ago
setup.c	[PATCH] mm: use symbolic names instead of indices for zone initialisation	19 years ago
sigframe.h	…
signal.c	[PATCH] vdso: randomize the i386 vDSO by moving it into a vma	19 years ago
smp.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
smpboot.c	[PATCH] i383 numa: fix numaq/summit apicid conflict	19 years ago
srat.c	[PATCH] convert i386 Summit subarch to use SRAT info for apicid_to_node calls	19 years ago
summit.c	…
sys_i386.c	[PATCH] provide kernel_execve on all architectures	19 years ago
syscall_table.S	[PATCH] epoll_pwait()	19 years ago
sysenter.c	[PATCH] small fix for not releasing the mmap semaphore in i386/arch_setup_additional_pages	19 years ago
time.c	arch/i386/kernel/time: don't shadow 'irq' function arg	19 years ago
time_hpet.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
topology.c	[PATCH] i386: clean up topology.c	19 years ago
trampoline.S	…
traps.c	[PATCH] namespaces: utsname: use init_utsname when appropriate	19 years ago
tsc.c	[PATCH] i386 Time: Avoid PIT SMP lockups	19 years ago
vm86.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
vmlinux.lds.S	[PATCH] x86: put .note.* sections into a PT_NOTE segment in vmlinux	19 years ago
vsyscall-int80.S	…
vsyscall-note.S	…
vsyscall-sigreturn.S	…
vsyscall-sysenter.S	[PATCH] vdso: randomize the i386 vDSO by moving it into a vma	19 years ago
vsyscall.S	…
vsyscall.lds.S	[PATCH] vDSO hash-style fix	19 years ago