search for: max_cpus

...pboot.c +++ b/arch/i386/kernel/smpboot.c @@ -1169,7 +1169,7 @@ static void __init smp_boot_cpus(unsigne /* These are wrappers to interface to the new boot process. Someone who understands all this stuff should rewrite it properly. --RR 15/Jul/02 */ -void __init smp_prepare_cpus(unsigned int max_cpus) +void __init native_smp_prepare_cpus(unsigned int max_cpus) { smp_commenced_mask = cpumask_of_cpu(0); cpu_callin_map = cpumask_of_cpu(0); @@ -1189,7 +1189,7 @@ static inline void switch_to_new_gdt(voi asm ("mov %0, %%fs" : : "r" (__KERNEL_PERCPU) : "memory");...

...pboot.c +++ b/arch/i386/kernel/smpboot.c @@ -1169,7 +1169,7 @@ static void __init smp_boot_cpus(unsigne /* These are wrappers to interface to the new boot process. Someone who understands all this stuff should rewrite it properly. --RR 15/Jul/02 */ -void __init smp_prepare_cpus(unsigned int max_cpus) +void __init native_smp_prepare_cpus(unsigned int max_cpus) { smp_commenced_mask = cpumask_of_cpu(0); cpu_callin_map = cpumask_of_cpu(0); @@ -1189,7 +1189,7 @@ static inline void switch_to_new_gdt(voi asm ("mov %0, %%fs" : : "r" (__KERNEL_PERCPU) : "memory");...

Hi folks, Here is the result of the latest work on the pvops front, after the x86 arch merge. From the functionality point of view, almost nothing was changed, except for proper vsmp support - which was discussed, but not implemented before - and the introduction of smp_ops in x86_64, which eased the merging of the smp header. Speaking of the merge, a significant part (although not majority) of

Hi folks, Here is the result of the latest work on the pvops front, after the x86 arch merge. From the functionality point of view, almost nothing was changed, except for proper vsmp support - which was discussed, but not implemented before - and the introduction of smp_ops in x86_64, which eased the merging of the smp header. Speaking of the merge, a significant part (although not majority) of

...ENOSYS; if ( cpufreq_controller != FREQCTL_dom0_kernel ) break; guest_from_compat_handle(idletimes, op->u.getidletime.idletime); + guest_from_compat_handle(totaltimes, op->u.getidletime.totaltime); nr_cpus = min_t(uint32_t, op->u.getidletime.max_cpus, NR_CPUS); for ( i = 0; i < nr_cpus; i++ ) @@ -312,11 +315,16 @@ ret_t do_platform_op(XEN_GUEST_HANDLE(xe break; idletime = v->runstate.time[RUNSTATE_running]; + totaltime = idletime + v->runstate.time[RUNSTATE_runnable] + +...

...atic int dbs_calc_load(struct cpu_dbs_info_s *this_dbs_info) +{ + int load = 0; + struct xen_platform_op op; + uint64_t idletime[NR_CPUS]; + uint64_t totaltime[NR_CPUS]; + struct cpufreq_policy *policy; + unsigned int j; + + op.cmd = XENPF_getidletime; + op.u.getidletime.max_cpus = num_online_cpus(); + set_xen_guest_handle(op.u.getidletime.idletime, idletime); + set_xen_guest_handle(op.u.getidletime.totaltime, totaltime); + HYPERVISOR_platform_op(&op); + + policy = this_dbs_info->cur_policy; + for_each_cpu_mask(j, policy->cpus) { + cputime64_...

...lude "libcflat.h" +#include "processor.h" +#include "msr.h" +#include "isr.h" +#include "vm.h" +#include "apic.h" +#include "desc.h" +#include "io.h" +#include "smp.h" +#include "atomic.h" + +#define MAX_CPUS 4 +#define HYPERV_CPUID_FEATURES 0x40000003 +#define HV_X64_MSR_SYNIC_AVAILABLE (1 << 2) +#define HV_SYNIC_CONTROL_ENABLE (1ULL << 0) +#define HV_SYNIC_SIMP_ENABLE (1ULL << 0) +#define HV_SYNIC_SIEFP_ENABLE...

...lude "libcflat.h" +#include "processor.h" +#include "msr.h" +#include "isr.h" +#include "vm.h" +#include "apic.h" +#include "desc.h" +#include "io.h" +#include "smp.h" +#include "atomic.h" + +#define MAX_CPUS 4 +#define HYPERV_CPUID_FEATURES 0x40000003 +#define HV_X64_MSR_SYNIC_AVAILABLE (1 << 2) +#define HV_SYNIC_CONTROL_ENABLE (1ULL << 0) +#define HV_SYNIC_SIMP_ENABLE (1ULL << 0) +#define HV_SYNIC_SIEFP_ENABLE...

...a halt to all other CPUs */ -void -smp_send_stop(void) +static void +voyager_smp_send_stop(void) { smp_call_function(smp_stop_cpu_function, NULL, 1, 1); } @@ -1924,23 +1923,26 @@ smp_voyager_power_off(void *dummy) smp_stop_cpu_function(NULL); } -void __init -smp_prepare_cpus(unsigned int max_cpus) +static void __init +voyager_smp_prepare_cpus(unsigned int max_cpus) { /* FIXME: ignore max_cpus for now */ smp_boot_cpus(); } -void __devinit smp_prepare_boot_cpu(void) -{ +static void __devinit voyager_smp_prepare_boot_cpu(void) +{ + init_gdt(smp_processor_id()); + switch_to_new_gdt(); +...

...a halt to all other CPUs */ -void -smp_send_stop(void) +static void +voyager_smp_send_stop(void) { smp_call_function(smp_stop_cpu_function, NULL, 1, 1); } @@ -1924,23 +1923,26 @@ smp_voyager_power_off(void *dummy) smp_stop_cpu_function(NULL); } -void __init -smp_prepare_cpus(unsigned int max_cpus) +static void __init +voyager_smp_prepare_cpus(unsigned int max_cpus) { /* FIXME: ignore max_cpus for now */ smp_boot_cpus(); } -void __devinit smp_prepare_boot_cpu(void) -{ +static void __devinit voyager_smp_prepare_boot_cpu(void) +{ + init_gdt(smp_processor_id()); + switch_to_new_gdt(); +...

...sor.h" > +#include "msr.h" > +#include "isr.h" > +#include "vm.h" > +#include "apic.h" > +#include "desc.h" > +#include "io.h" > +#include "smp.h" > +#include "atomic.h" > + > +#define MAX_CPUS 4 > +#define HYPERV_CPUID_FEATURES 0x40000003 > +#define HV_X64_MSR_SYNIC_AVAILABLE (1 << 2) > +#define HV_SYNIC_CONTROL_ENABLE (1ULL << 0) > +#define HV_SYNIC_SIMP_ENABLE (1ULL << 0) > +#define HV_SY...

...10f78..7522cae02759 100644 > --- a/arch/x86/kernel/cpu/mshyperv.c > +++ b/arch/x86/kernel/cpu/mshyperv.c > @@ -203,6 +203,31 @@ static void __init hv_smp_prepare_boot_cpu(void) > hv_init_spinlocks(); > #endif > } > + > +static void __init hv_smp_prepare_cpus(unsigned int max_cpus) > +{ > +#if defined(CONFIG_X86_64) I think it makes little sense to try to make Linux work as Hyper-V root partition when !CONFIG_X86_64. If we still care about Hyper-V enablement for !CONFIG_X86_64 we can probably introduce something like CONFIG_HYPERV_ROOT and enable it automatically, e.g...

This patch series implements SMP boot for arch/arm, as far as getting all CPUs up and running the idle loop. Changes from v1: - moved barriers out of loop in udelay() - dropped broken GIC change in favour of explanatory comment - made the increment of ready_cpus atomic (I couldn''t move the increment to before signalling the next CPU because the PT switch has to happen between

The current paravirt startup_ipi hook for vmware commit: ae5da273fe3352febd38658d8d34484cbcfb3423 is quite frankly ridiculous. In the middle of wake_up_secondary_cpu: We have: /* * Paravirt / VMI wants a startup IPI hook here to set up the * target processor state. */ startup_ipi_hook(phys_apicid, (unsigned long) start_secondary, (unsigned

The current paravirt startup_ipi hook for vmware commit: ae5da273fe3352febd38658d8d34484cbcfb3423 is quite frankly ridiculous. In the middle of wake_up_secondary_cpu: We have: /* * Paravirt / VMI wants a startup IPI hook here to set up the * target processor state. */ startup_ipi_hook(phys_apicid, (unsigned long) start_secondary, (unsigned

With virt_spin_lock() being guarded by a static key the bare metal case can be optimized by patching the call away completely. In case a kernel running as a guest it can decide whether to use paravitualized spinlocks, the current fallback to the unfair test-and-set scheme, or to mimic the bare metal behavior. V2: - use static key instead of making virt_spin_lock() a pvops function Juergen Gross

With virt_spin_lock() being guarded by a static key the bare metal case can be optimized by patching the call away completely. In case a kernel running as a guest it can decide whether to use paravitualized spinlocks, the current fallback to the unfair test-and-set scheme, or to mimic the bare metal behavior. V2: - use static key instead of making virt_spin_lock() a pvops function Juergen Gross

Hello, Third version of the NUMA placement series Xen 4.2. All the comments received during v2''s review have been addressed (more details in single changelogs). The most notable changes are the following: - the libxl_cpumap --> libxl_bitmap renaming has been rebased on top of the recent patches that allows us to allocate bitmaps of different sizes; - the heuristics for deciding

...ly one idle domain now. However I''m not sure why something will go wrong when NR_CPUS > MAX_VIRT_CPUS. As long as you want to wake up an AP, you have to go through do_boot_cpu where idle_vcpu will be created. The only drawback is that some physical cpus will not be waken up by "max_cpus = MAX_VIRT_CPUS" you mentioned in another thread. That needs to be fixed which however shouldn''t crash anything since uninitialized cpus won''t be used. Thanks, Kevin _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http...

...; #include <linux/mempolicy.h> #include <linux/key.h> +#include <linux/root_dev.h> #include <asm/io.h> #include <asm/bugs.h> @@ -126,6 +127,11 @@ static char *ramdisk_execute_command; /* Setup configured maximum number of CPUs to activate */ static unsigned int max_cpus = NR_CPUS; +/* ROOT_DEV contains any architecture-specific default root device. */ +/* real_root_dev is used (via sysctl) to communicate ROOT_DEV to kinit. */ +dev_t ROOT_DEV; +unsigned int real_root_dev; + /* * Setup routine for controlling SMP activation * @@ -682,6 +688,12 @@ static int i...