search for: sa_interrupt

Not all OSes have SA_RESTART (for instance, SunOS does not). Also, for the non-SA_RESTART case in scp.c sa.sa_flags was not being initialized (noted by dworkin at village.org). - todd --- scp.c.DIST Sat Feb 17 17:56:33 2001 +++ scp.c Sat Feb 17 17:57:59 2001 @@ -1224,8 +1224,9 @@ struct sigaction sa; sa.sa_handler = updateprogressmeter; sigemptyset((sigset_t *)&sa.sa_mask); +

...pux_port_ascii_0295 .. SunOS's sigaction() automatically restarts system calls. The default behavior on HP-UX is to not restart. As noted in the Solaris Porting FAQ, code that depends on restarting system calls is generally considered to be bad practice and should be avoided. SunOS provides the SA_INTERRUPT option, which is used to prevent system calls from being restarted. SA_INTERRUPT is not available on HP-UX, but is the default behavior of sigaction() on HP-UX (that is, does not restart signal calls). SA_RESTART is used on SunOS to make system calls restart. It is not available on HP-UX. Instead,...

These patches address issues in the kernel part of xenoprof: * Ill-advised use of on_each_cpu() can lead to sleep with interrupts disabled. * Race conditions in active_domains code. * Cleanup of active_domains code. Comments welcome. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...>. >SunOS's sigaction() automatically restarts system calls. The default >behavior on HP-UX is to not restart. As noted in the Solaris Porting FAQ, >code that depends on restarting system calls is generally considered to be >bad practice and should be avoided. SunOS provides the SA_INTERRUPT option, >which is used to prevent system calls from being restarted. SA_INTERRUPT is >not available on HP-UX, but is the default behavior of sigaction() on HP-UX >(that is, does not restart signal calls). > >SA_RESTART is used on SunOS to make system calls restart. It is not >avai...

...SIGIO 29 +#define SIGPOLL SIGIO +#define SIGPWR 30 +#define SIGSYS 31 +#define SIGUNUSED 31 + +#define SIGRTMIN 32 +#define SIGRTMAX (_NSIG-1) + +/* + * SA_FLAGS values: + * + * SA_ONSTACK indicates that a registered stack_t will be used. + * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the + * SA_RESTART flag to get restarting signals (which were the default long ago) + * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. + * SA_RESETHAND clears the handler when the signal is delivered. + * SA_NOCLDWAIT flag on SIGCHLD to...

...native mode\n", VMI_API_REV_MAJOR, MIN_VMI_API_REV_MINOR); - if (hypervisor_found) + if (hypervisor_found) { pm_power_off = vmi_power_off; + probe_vmi_timer(); + } } @@ -306,6 +317,8 @@ void __init trap_init_hook(void) static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL}; +static struct irqaction vmi_irq0 = { vmi_timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "VMI-alarm", NULL, NULL}; + /** * time_init_hook - do any specific initialisations for the system timer. * @@ -315,5 +328,8 @@ static struct irqa...

...native mode\n", VMI_API_REV_MAJOR, MIN_VMI_API_REV_MINOR); - if (hypervisor_found) + if (hypervisor_found) { pm_power_off = vmi_power_off; + probe_vmi_timer(); + } } @@ -306,6 +317,8 @@ void __init trap_init_hook(void) static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL}; +static struct irqaction vmi_irq0 = { vmi_timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "VMI-alarm", NULL, NULL}; + /** * time_init_hook - do any specific initialisations for the system timer. * @@ -315,5 +328,8 @@ static struct irqa...

Now it's a good time to introduce the new tool 'o2info' since kernel part of OCFS2_IOC_INFO ioctl has been pulld upstream by linus. The following 6 patches have already got sunil's SOBs, and now they're trying to attract more reviewers before it goes to central repo with a modification of getting manual pages being introduced.

...read = read_real_cycles, + .mask = CLOCKSOURCE_MASK(64), + .mult = 0, /* to be set */ + .shift = 22, + .is_continuous = 1, +}; + + +/* Timer interrupt handler. */ +static irqreturn_t vmi_timer_interrupt(int irq, void *dev_id); + +struct irqaction vmi_timer_irq = { + vmi_timer_interrupt, + SA_INTERRUPT, + CPU_MASK_NONE, + "VMI-alarm", + NULL, + NULL +}; + +/* Alarm rate */ +static int __init vmi_timer_alarm_rate_setup(char* str) +{ + int alarm_rate; + if (get_option(&str, &alarm_rate) == 1 && alarm_rate > 0) { + alarm_hz = alarm_rate; + printk(KERN_WARNING "VMI...

...read = read_real_cycles, + .mask = CLOCKSOURCE_MASK(64), + .mult = 0, /* to be set */ + .shift = 22, + .is_continuous = 1, +}; + + +/* Timer interrupt handler. */ +static irqreturn_t vmi_timer_interrupt(int irq, void *dev_id); + +struct irqaction vmi_timer_irq = { + vmi_timer_interrupt, + SA_INTERRUPT, + CPU_MASK_NONE, + "VMI-alarm", + NULL, + NULL +}; + +/* Alarm rate */ +static int __init vmi_timer_alarm_rate_setup(char* str) +{ + int alarm_rate; + if (get_option(&str, &alarm_rate) == 1 && alarm_rate > 0) { + alarm_hz = alarm_rate; + printk(KERN_WARNING "VMI...

...read = read_real_cycles, + .mask = CLOCKSOURCE_MASK(64), + .mult = 0, /* to be set */ + .shift = 22, + .is_continuous = 1, +}; + + +/* Timer interrupt handler. */ +static irqreturn_t vmi_timer_interrupt(int irq, void *dev_id); + +struct irqaction vmi_timer_irq = { + vmi_timer_interrupt, + SA_INTERRUPT, + CPU_MASK_NONE, + "VMI-alarm", + NULL, + NULL +}; + +/* Alarm rate */ +static int __init vmi_timer_alarm_rate_setup(char* str) +{ + int alarm_rate; + if (get_option(&str, &alarm_rate) == 1 && alarm_rate > 0) { + alarm_hz = alarm_rate; + printk(KERN_WARNING "VMI...

...read = read_real_cycles, + .mask = CLOCKSOURCE_MASK(64), + .mult = 0, /* to be set */ + .shift = 22, + .is_continuous = 1, +}; + + +/* Timer interrupt handler. */ +static irqreturn_t vmi_timer_interrupt(int irq, void *dev_id); + +struct irqaction vmi_timer_irq = { + vmi_timer_interrupt, + SA_INTERRUPT, + CPU_MASK_NONE, + "VMI-alarm", + NULL, + NULL +}; + +/* Alarm rate */ +static int __init vmi_timer_alarm_rate_setup(char* str) +{ + int alarm_rate; + if (get_option(&str, &alarm_rate) == 1 && alarm_rate > 0) { + alarm_hz = alarm_rate; + printk(KERN_WARNING "VMI...

...d __init pre_setup_arch_hook(void) +{ + probe_vmi_rom(); + vmi_init(); +} + +/** + * trap_init_hook - initialise system specific traps + * + * Description: + * Called as the final act of trap_init(). + **/ +void __init trap_init_hook(void) +{ +} + +static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL}; + +/** + * time_init_hook - do any specific initialisations for the system timer. + * + * Description: + * Must plug the system timer interrupt source at HZ into the IRQ listed + * in irq_vectors.h:TIMER_IRQ + **/ +void __init time_init_hook(void) +{...

...d __init pre_setup_arch_hook(void) +{ + probe_vmi_rom(); + vmi_init(); +} + +/** + * trap_init_hook - initialise system specific traps + * + * Description: + * Called as the final act of trap_init(). + **/ +void __init trap_init_hook(void) +{ +} + +static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL}; + +/** + * time_init_hook - do any specific initialisations for the system timer. + * + * Description: + * Must plug the system timer interrupt source at HZ into the IRQ listed + * in irq_vectors.h:TIMER_IRQ + **/ +void __init time_init_hook(void) +{...

...dev->unit_address, queue->msg_token, ++ PAGE_SIZE); ++ } ++ ++ if (err != H_SUCCESS && err != 2) { ++ eprintk("Error 0x%x opening virtual adapter\n", err); ++ goto reg_crq_failed; ++ } ++ ++ err = request_irq(vport->dma_dev->irq, &ibmvstgt_interrupt, ++ SA_INTERRUPT, "ibmvstgt", target); ++ if (err) ++ goto req_irq_failed; ++ ++ vio_enable_interrupts(vport->dma_dev); ++ ++ h_send_crq(vport->dma_dev->unit_address, 0xC001000000000000, 0); ++ ++ queue->cur = 0; ++ spin_lock_init(&queue->lock); ++ ++ return 0; ++ ++req_irq_failed: ++...

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

I have updated the klibc patchset based on feedback received. In particular, the patchset has been reorganized so as not to break git-bisect. Additionally, this updates the patch base to 2.6.17-git12 (d38b69689c349f35502b92e20dafb30c62d49d63) and klibc 1.4.8; the main difference on the klibc side is removal of obsolete code. This is also available as a git tree at:

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths