search for: shutting_down

...has a mutex guarding against multiple ''poweroff'' operations. But not against the kernel ''orderly_poweroff''. As such, lets detect this so that we don''t invoke orderly_poweroff if the user had initiated a poweroff. This is code by changing the ''shutting_down'' to an atomic and having a reboot notifier. If the ''shutting_down'' is set to anything but SHUTDOWN_INVALID the XenBus handler will not run. That is exactly what we do in the reboot notifier - we set the ''shutting_down'' to SHUTDOWN_POWEROFF. The reason...

...1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c index 412b96c..7680276 100644 --- a/drivers/xen/manage.c +++ b/drivers/xen/manage.c @@ -36,6 +36,7 @@ enum shutdown_state { /* Ignore multiple shutdown requests. */ static enum shutdown_state shutting_down = SHUTDOWN_INVALID; +#ifdef CONFIG_HIBERNATE_CALLBACKS struct suspend_info { int cancelled; unsigned long arg; /* extra hypercall argument */ @@ -63,7 +64,6 @@ static void xen_post_suspend(int cancelled) xen_mm_unpin_all(); } -#ifdef CONFIG_HIBERNATE_CALLBACKS static int xen_suspend(vo...

Hi! Say we have a rails active-record-based model called "instance" which can have different states - STOPPED, RUNNING, STARTING_UP, SHUTTING_DOWN, etc... There is a method #start which changes the instance state to STARTING_UP only if it is STOPPED. def start if self.state == STOPPED self.state = STARTING_UP self.save ... end end As you understand if we have multiple concurrent requests for #start, there is a possibility of a...

...n/manage.c index 0b50906..5b9c132 100644 --- a/linux-2.6-xen/drivers/xen/manage.c +++ b/linux-2.6-xen/drivers/xen/manage.c @@ -165,6 +165,8 @@ out_destroy_sm: stop_machine_destroy(); out: + if (cancelled) + xenbus_write(XBT_NIL, "control", "shutdown", "failed"); shutting_down = SHUTDOWN_INVALID; } #endif /* CONFIG_PM_SLEEP */ @@ -190,6 +192,11 @@ static void shutdown_handler(struct xenbus_watch *watch, xenbus_transaction_end(xbt, 1); return; } + /* Ignore failed message, posted by self */ + if (strcmp(str, "failed") == 0) { + xenbus_transaction_end(...

More cleanup. In this patch-set we deal with the following issues: 1) While a Linux guest on Hyper-V can be assigned removable media devices (DVD, floppy etc), these devices are not handled by the Hyper-V block driver. So, we cleanup all the dead code dealing with removable media devices. 2) There were multiple functions to retrieve information about the device. Since much of

More cleanup. In this patch-set we deal with the following issues: 1) While a Linux guest on Hyper-V can be assigned removable media devices (DVD, floppy etc), these devices are not handled by the Hyper-V block driver. So, we cleanup all the dead code dealing with removable media devices. 2) There were multiple functions to retrieve information about the device. Since much of

This is a resend of a previously sent patch-set. This patch-set deals with some of the style isues in blkvsc_drv.c. We also get rid most of the "dead code" in this file: 1) Get rid of most of the forward declarations in this file. The only remaining forward declarations are to deal with circular dependencies. 2) Get rid of most of the dead code in the file. Some of the

This is a resend of a previously sent patch-set. This patch-set deals with some of the style isues in blkvsc_drv.c. We also get rid most of the "dead code" in this file: 1) Get rid of most of the forward declarations in this file. The only remaining forward declarations are to deal with circular dependencies. 2) Get rid of most of the dead code in the file. Some of the

The latest upstream merge changed struct block_device_operations: This merge got rid of blkvsc_media_changed and introduced the function blkvsc_check_events. This broke all the patches that were sent after the tree was closed the last time. This is a resend of this patch-set to account for this change in the kernel. More cleanup. In this patch-set we deal with the following issues: 1) While a

The latest upstream merge changed struct block_device_operations: This merge got rid of blkvsc_media_changed and introduced the function blkvsc_check_events. This broke all the patches that were sent after the tree was closed the last time. This is a resend of this patch-set to account for this change in the kernel. More cleanup. In this patch-set we deal with the following issues: 1) While a

This patch-set deals with some of the style isues in blkvsc_drv.c. We also get rid most of the "dead code" in this file: 1) Get rid of most of the forward declarations in this file. The only remaining forward declarations are to deal with circular dependencies. 2) Get rid of most of the dead code in the file. Some of the functions in this file are place holders - they

This patch-set deals with some of the style isues in blkvsc_drv.c. We also get rid most of the "dead code" in this file: 1) Get rid of most of the forward declarations in this file. The only remaining forward declarations are to deal with circular dependencies. 2) Get rid of most of the dead code in the file. Some of the functions in this file are place holders - they

...When read, this entry provides the current state of an Intel + MIC device in the context of the card OS. Possible values that + will be read are: + "offline" - The MIC device is ready to boot the card OS. + "online" - The MIC device has initiated booting a card OS. + "shutting_down" - The card OS is shutting down. + "reset_failed" - The MIC device has failed to reset. + + When written, this sysfs entry triggers different state change + operations depending upon the current state of the card OS. + Acceptable values are: + "boot" - Boot the card OS...

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

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

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

...state */ > + assert(0); > +}; > + > +static int get_mic_state(struct mic_info *mic, char *state) > +{ > + if (!strcmp(state, "offline")) > + return MIC_OFFLINE; > + if (!strcmp(state, "online")) > + return MIC_ONLINE; > + if (!strcmp(state, "shutting_down")) > + return MIC_SHUTTING_DOWN; > + if (!strcmp(state, "reset_failed")) > + return MIC_RESET_FAILED; > + mpsslog("%s: BUG invalid state %s\n", mic->name, state); > + /* Invalid state */ > + assert(0); > +}; > + > +static void mic_handle_shut...

...state */ > + assert(0); > +}; > + > +static int get_mic_state(struct mic_info *mic, char *state) > +{ > + if (!strcmp(state, "offline")) > + return MIC_OFFLINE; > + if (!strcmp(state, "online")) > + return MIC_ONLINE; > + if (!strcmp(state, "shutting_down")) > + return MIC_SHUTTING_DOWN; > + if (!strcmp(state, "reset_failed")) > + return MIC_RESET_FAILED; > + mpsslog("%s: BUG invalid state %s\n", mic->name, state); > + /* Invalid state */ > + assert(0); > +}; > + > +static void mic_handle_shut...

...uot;, mic->name, shutdown_status); + /* Invalid state */ + assert(0); +}; + +static int get_mic_state(struct mic_info *mic, char *state) +{ + if (!strcmp(state, "offline")) + return MIC_OFFLINE; + if (!strcmp(state, "online")) + return MIC_ONLINE; + if (!strcmp(state, "shutting_down")) + return MIC_SHUTTING_DOWN; + if (!strcmp(state, "reset_failed")) + return MIC_RESET_FAILED; + mpsslog("%s: BUG invalid state %s\n", mic->name, state); + /* Invalid state */ + assert(0); +}; + +static void mic_handle_shutdown(struct mic_info *mic) +{ +#define SHUTDO...

Further cleanup of the hv drivers: 1) Continue to cleanup our drivers to conform to the Linux Driver Model. 2) Fix some long standing bugs with regards to unloading and reloading the drivers - block, net and stor. 3) VMBUS is an ACPI enumerated device; make VMBUS an ACPI bus driver. 4) Get rid of channel polling code; instead the channel receive paths will be purely interrupt