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Dimitri Sivanich cbf9b4bb76 [PATCH] X86_64 monotonic_clock goes backwards ... I've noticed some erratic behavior while testing the X86_64 version of monotonic_clock(). While spinning in a loop reading monotonic clock values (pinned to a single cpu) I noticed that the difference between subsequent values occasionally went negative (time going backwards). I found that in the following code: this_offset = get_cycles_sync(); /* FIXME: 1000 or 1000000? */ --> offset = (this_offset - last_offset)*1000 / cpu_khz; } return base + offset; the offset sometimes turns out to be 0, even though this_offset > last_offset. +Added fix From: Toyo Abe <toyoa@mvista.com> The x86_64-mm-monotonic-clock.patch in 2.6.18-rc4-mm2 made a change to the updating of monotonic_base. It now uses cycles_2_ns(). I suggest that a set_cyc2ns_scale() should be done prior to the setup_irq(). Because cycles_2_ns() can be called from the timer ISR right after the irq0 is enabled. Signed-off-by: Toyo Abe <toyoa@mvista.com> Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> Signed-off-by: Andi Kleen <ak@suse.de>		19 years ago
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acpi	Remove obsolete #include <linux/config.h>	19 years ago
cpufreq	Linux-2.6.12-rc2	20 years ago
Makefile	[PATCH] Move early chipset quirks out to new file	19 years ago
aperture.c	[PATCH] A few trivial spelling and grammar fixes	19 years ago
apic.c	[PATCH] Don't access the APIC in safe_smp_processor_id when it is not mapped yet	19 years ago
asm-offsets.c	[CRYPTO] all: Pass tfm instead of ctx to algorithms	19 years ago
audit.c	[PATCH] audit: AUDIT_PERM support	19 years ago
crash.c	[PATCH] Remove all ifdefs for local/io apic	19 years ago
crash_dump.c	[PATCH] kdump: read previous kernel's memory	19 years ago
e820.c	[PATCH] Move e820 map into e820.c	19 years ago
early-quirks.c	[PATCH] Move early chipset quirks out to new file	19 years ago
early_printk.c	[PATCH] Convert x86-64 to early param	19 years ago
entry.S	[PATCH] x86: error_code is not safe for kprobes	19 years ago
functionlist	[NET]: make skb_release_data() static	19 years ago
genapic.c	Remove obsolete #include <linux/config.h>	19 years ago
genapic_cluster.c	[PATCH] remove int_delivery_dest	19 years ago
genapic_flat.c	[PATCH] Replace local_save_flags+local_irq_disable with	19 years ago
head.S	[PATCH] Remove obsolete CVS $Id$ from assembler files in arch/x86_64/kernel/*	19 years ago
head64.c	[PATCH] Remove need for early lockdep init	19 years ago
i387.c	Remove obsolete #include <linux/config.h>	19 years ago
i8259.c	[PATCH] Remove all ifdefs for local/io apic	19 years ago
init_task.c	[PATCH] x86_64: Save original IST values for checking stack addresses	19 years ago
io_apic.c	[PATCH] Convert x86-64 to early param	19 years ago
ioport.c	[PATCH] x86-64 TIF flags for debug regs and io bitmap in ctxsw	19 years ago
irq.c	[PATCH] Remove apic mismatch counter	19 years ago
k8.c	[PATCH] x86_64: Clean and enhance up K8 northbridge access code	19 years ago
kprobes.c	Remove obsolete #include <linux/config.h>	19 years ago
ldt.c	Linux-2.6.12-rc2	20 years ago
machine_kexec.c	[PATCH] Convert x86-64 to early param	19 years ago
mce.c	[PATCH] cpu hotplug: use hotplug version of registration in late inits	19 years ago
mce_amd.c	[PATCH] cpu hotplug: use hotplug version of registration in late inits	19 years ago
mce_intel.c	[PATCH] x86_64: Some housekeeping in local APIC code	19 years ago
module.c	[PATCH] x86_64: x86_64 version of the smp alternative patch.	19 years ago
mpparse.c	[PATCH] Fix up some non linuxy style in ACPI functions in mpparse.c	19 years ago
nmi.c	[PATCH] x86: i386/x86-64 Add nmi watchdog support for new Intel CPUs	19 years ago
pci-calgary.c	[PATCH] Calgary IOMMU: eradicate sole remaining 80 chars per line offender	19 years ago
pci-dma.c	[PATCH] Convert x86-64 to early param	19 years ago
pci-gart.c	[PATCH] remove superflous BUG_ON's in nommu and gart	19 years ago
pci-nommu.c	[PATCH] remove superflous BUG_ON's in nommu and gart	19 years ago
pci-swiotlb.c	[PATCH] x86_64: Fix swiotlb=force	19 years ago
pmtimer.c	[PATCH] make pmtmr_ioport __read_mostly	19 years ago
process.c	[PATCH] i386/x86-64: Don't randomize stack top when no randomization personality is set	19 years ago
ptrace.c	[PATCH] i386/x86-64: rename is_at_popf(), add iret to tests and fix	19 years ago
reboot.c	[PATCH] x86_64: Move export symbols to their C functions	19 years ago
relocate_kernel.S	[PATCH] kexec: x86_64 kexec implementation	20 years ago
setup.c	[PATCH] Move e820 map into e820.c	19 years ago
setup64.c	[PATCH] Convert x86-64 to early param	19 years ago
signal.c	[PATCH] Add TIF_RESTORE_SIGMASK	19 years ago
smp.c	[PATCH] Don't access the APIC in safe_smp_processor_id when it is not mapped yet	19 years ago
smpboot.c	[PATCH] Convert x86-64 to early param	19 years ago
stacktrace.c	[PATCH] Merge stacktrace and show_trace	19 years ago
suspend.c	Remove obsolete #include <linux/config.h>	19 years ago
suspend_asm.S	[PATCH] x86_64: Set up safe page tables during resume	20 years ago
sys_x86_64.c	[PATCH] x86_64: Use common sys_time64	20 years ago
syscall.c	Remove obsolete #include <linux/config.h>	19 years ago
tce.c	[PATCH] Calgary IOMMU: consolidate per bus data structures	19 years ago
time.c	[PATCH] X86_64 monotonic_clock goes backwards	19 years ago
trampoline.S	[PATCH] Fix gdt table size in trampoline.S	19 years ago
traps.c	[PATCH] Check for end of stack trace before falling back	19 years ago
vmlinux.lds.S	[PATCH] Add the vgetcpu vsyscall	19 years ago
vsmp.c	[PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_arch	19 years ago
vsyscall.c	[PATCH] Add sparse annotation to vsyscall.c	19 years ago
x8664_ksyms.c	[PATCH] x86_64: Move export symbols to their C functions	19 years ago