search for: clockchips

>>> On 21.12.11 at 14:53, Laszlo Ersek <lersek@redhat.com> wrote: > On 12/21/11 09:32, Jan Beulich wrote: >> I currently have no idea what the remain 1% could be attributed to, >> so thoughts from others would certainly be welcome. > > What about irqtime_account_process_tick() calling account_idle_time() > with "cputime_one_jiffy" -- it could more

...+++++ drivers/hv/Kconfig | 3 +++ 3 files changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index b371d0e..0ce8485 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -27,10 +27,15 @@ #include <linux/clockchips.h> -#ifdef CONFIG_X86_64 +#ifdef CONFIG_HYPERV_TSCPAGE static struct ms_hyperv_tsc_page *tsc_pg; +struct ms_hyperv_tsc_page *hv_get_tsc_page(void) +{ + return tsc_pg; +} + static u64 read_hv_clock_tsc(struct clocksource *arg) { u64 current_tick; @@ -136,7 +141,7 @@ void hyperv_init(...

...LOCKSOURCE_DATA + select ARCH_CLOCKSOURCE_INIT select ARCH_DISCARD_MEMBLOCK select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_DEBUG_VIRTUAL --- a/arch/x86/kernel/time.c +++ b/arch/x86/kernel/time.c @@ -10,6 +10,7 @@ * */ +#include <linux/clocksource.h> #include <linux/clockchips.h> #include <linux/interrupt.h> #include <linux/irq.h> @@ -105,3 +106,18 @@ void __init time_init(void) { late_time_init = x86_late_time_init; } + +/* + * Sanity check the vdso related archdata content. + */ +void clocksource_arch_init(struct clocksource *cs) +{ + if (cs->ar...

...select ARCH_DISCARD_MEMBLOCK > select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI > select ARCH_HAS_DEBUG_VIRTUAL > --- a/arch/x86/kernel/time.c > +++ b/arch/x86/kernel/time.c > @@ -10,6 +10,7 @@ > * > */ > > +#include <linux/clocksource.h> > #include <linux/clockchips.h> > #include <linux/interrupt.h> > #include <linux/irq.h> > @@ -105,3 +106,18 @@ void __init time_init(void) > { > late_time_init = x86_late_time_init; > } > + > +/* > + * Sanity check the vdso related archdata content. > + */ > +void clocksour...

...LOCKSOURCE_DATA + select ARCH_CLOCKSOURCE_INIT select ARCH_DISCARD_MEMBLOCK select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_DEBUG_VIRTUAL --- a/arch/x86/kernel/time.c +++ b/arch/x86/kernel/time.c @@ -10,6 +10,7 @@ * */ +#include <linux/clocksource.h> #include <linux/clockchips.h> #include <linux/interrupt.h> #include <linux/irq.h> @@ -105,3 +106,18 @@ void __init time_init(void) { late_time_init = x86_late_time_init; } + +/* + * Sanity check the vdso related archdata content. + */ +void clocksource_arch_init(struct clocksource *cs) +{ + if (cs->ar...

...ense + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/smp.h> +#include <linux/interrupt.h> +#include <linux/cpumask.h> +#include <linux/clocksource.h> +#include <linux/clockchips.h> + +#include <asm/vmi.h> +#include <asm/vmi_time.h> +#include <asm/arch_hooks.h> +#include <asm/apicdef.h> +#include <asm/apic.h> +#include <asm/timer.h> + +#include <irq_vectors.h> +#include "io_ports.h" + +#define VMI_ONESHOT (VMI_ALARM_IS...

...ense + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/smp.h> +#include <linux/interrupt.h> +#include <linux/cpumask.h> +#include <linux/clocksource.h> +#include <linux/clockchips.h> + +#include <asm/vmi.h> +#include <asm/vmi_time.h> +#include <asm/arch_hooks.h> +#include <asm/apicdef.h> +#include <asm/apic.h> +#include <asm/timer.h> + +#include <irq_vectors.h> +#include "io_ports.h" + +#define VMI_ONESHOT (VMI_ALARM_IS...

Hi, Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implemented the required support. Simple sysbench test shows the following results: Before: # time sysbench --test=memory --max-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench --test=memory

Hi, Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implemented the required support. Simple sysbench test shows the following results: Before: # time sysbench --test=memory --max-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench --test=memory

...+++++ drivers/hv/Kconfig | 3 +++ 3 files changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index b371d0e..0ce8485 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -27,10 +27,15 @@ #include <linux/clockchips.h> -#ifdef CONFIG_X86_64 +#ifdef CONFIG_HYPERV_TSCPAGE static struct ms_hyperv_tsc_page *tsc_pg; +struct ms_hyperv_tsc_page *hv_get_tsc_page(void) { + return tsc_pg; +} + static u64 read_hv_clock_tsc(struct clocksource *arg) { u64 current_tick; @@ -136,7 +141,7 @@ void hyperv_init(v...

...+++++ drivers/hv/Kconfig | 3 +++ 3 files changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index b371d0e..0ce8485 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -27,10 +27,15 @@ #include <linux/clockchips.h> -#ifdef CONFIG_X86_64 +#ifdef CONFIG_HYPERV_TSCPAGE static struct ms_hyperv_tsc_page *tsc_pg; +struct ms_hyperv_tsc_page *hv_get_tsc_page(void) { + return tsc_pg; +} + static u64 read_hv_clock_tsc(struct clocksource *arg) { u64 current_tick; @@ -136,7 +141,7 @@ void hyperv_init(v...

...5d0e > --- /dev/null > +++ b/arch/x86/hyperv/hv_proc.c > @@ -0,0 +1,209 @@ > +// SPDX-License-Identifier: GPL-2.0 > +#include <linux/types.h> > +#include <linux/version.h> > +#include <linux/vmalloc.h> > +#include <linux/mm.h> > +#include <linux/clockchips.h> > +#include <linux/acpi.h> > +#include <linux/hyperv.h> > +#include <linux/slab.h> > +#include <linux/cpuhotplug.h> > +#include <asm/hypervisor.h> > +#include <asm/mshyperv.h> > +#include <asm/apic.h> > + > +#include <asm...

The following patches are the latest update of the TSC and hrtimer patches I posted on 29/03. Rusty's original TSC patch has been resynced to the latest lguest repo, as has the hrtimer patch, which also incorporates feedback from Jeremy & Rusty: - Change clock event hrtimer to absolute time. 'now' is captured in the host during the hypercall. - Propagate -ETIME back to the

The following patches are the latest update of the TSC and hrtimer patches I posted on 29/03. Rusty's original TSC patch has been resynced to the latest lguest repo, as has the hrtimer patch, which also incorporates feedback from Jeremy & Rusty: - Change clock event hrtimer to absolute time. 'now' is captured in the host during the hypercall. - Propagate -ETIME back to the

Hi, merge window is about to close so I hope it's OK to make another try here. Changes since v2: - Add explicit READ_ONCE() to not rely on 'volatile' [Andy Lutomirski] - rdtsc() -> rdtsc_ordered() [Andy Lutomirski] - virt_rmb() -> smp_rmb() [Thomas Gleixner, Andy Lutomirski] Thomas, Andy, it seems the only blocker for the series was the ambiguity with TSC page read algorithm.

Hi, merge window is about to close so I hope it's OK to make another try here. Changes since v2: - Add explicit READ_ONCE() to not rely on 'volatile' [Andy Lutomirski] - rdtsc() -> rdtsc_ordered() [Andy Lutomirski] - virt_rmb() -> smp_rmb() [Thomas Gleixner, Andy Lutomirski] Thomas, Andy, it seems the only blocker for the series was the ambiguity with TSC page read algorithm.

Respin of the paravirt clock patch series. On the host side the kvm paravirt clock is made compatible with the xen clock. On the guest side some xen code has been factored out into a separate source file shared by both kvm and xen clock implementations. This time it should work ok for kvm smp guests ;) cheers, Gerd

Respin of the paravirt clock patch series. On the host side the kvm paravirt clock is made compatible with the xen clock. On the guest side some xen code has been factored out into a separate source file shared by both kvm and xen clock implementations. This time it should work ok for kvm smp guests ;) cheers, Gerd

paravirt clock source patches, next round, with a bunch of changes in the host code according to Avi's review comments and some minor code tweaks. cheers, Gerd

paravirt clock source patches, next round, with a bunch of changes in the host code according to Avi's review comments and some minor code tweaks. cheers, Gerd