kernel/include/xen/xenbus.h, branch linux-4.16.y

xen: modify xenstore watch event interface

2017-02-09T16:26:49Z

Today a Xenstore watch event is delivered via a callback function declared as: void (*callback)(struct xenbus_watch *, const char **vec, unsigned int len); As all watch events only ever come with two parameters (path and token) changing the prototype to: void (*callback)(struct xenbus_watch *, const char *path, const char *token); is the natural thing to do. Apply this change and adapt all users. Cc: konrad.wilk@oracle.com Cc: roger.pau@citrix.com Cc: wei.liu2@citrix.com Cc: paul.durrant@citrix.com Cc: netdev@vger.kernel.org Signed-off-by: Juergen Gross Reviewed-by: Paul Durrant Reviewed-by: Wei Liu Reviewed-by: Roger Pau Monné Reviewed-by: Boris Ostrovsky Signed-off-by: Boris Ostrovsky

xen: clean up xenbus internal headers

2017-02-09T16:26:49Z

The xenbus driver has an awful mixture of internally and globally visible headers: some of the internally used only stuff is defined in the global header include/xen/xenbus.h while some stuff defined in internal headers is used by other drivers, too. Clean this up by moving the externally used symbols to include/xen/xenbus.h and the symbols used internally only to a new header drivers/xen/xenbus/xenbus.h replacing xenbus_comms.h and xenbus_probe.h Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky Signed-off-by: Boris Ostrovsky

xen: introduce xenbus_read_unsigned()

2016-11-07T12:55:02Z

There are multiple instances of code reading an optional unsigned parameter from Xenstore via xenbus_scanf(). Instead of repeating the same code over and over add a service function doing the job. Signed-off-by: Juergen Gross Reviewed-by: David Vrabel

xen/xenbus: Rename RING_PAGE to RING_GRANT

2015-10-23T13:20:46Z

Linux may use a different page size than the size of grant. So make clear that the order is actually in number of grant. Signed-off-by: Julien Grall Signed-off-by: David Vrabel

xenbus_client: Extend interface to support multi-page ring

2015-04-15T09:56:47Z

Originally Xen PV drivers only use single-page ring to pass along information. This might limit the throughput between frontend and backend. The patch extends Xenbus driver to support multi-page ring, which in general should improve throughput if ring is the bottleneck. Changes to various frontend / backend to adapt to the new interface are also included. Affected Xen drivers: * blkfront/back * netfront/back * pcifront/back * scsifront/back * vtpmfront The interface is documented, as before, in xenbus_client.c. Signed-off-by: Wei Liu Signed-off-by: Paul Durrant Signed-off-by: Bob Liu Cc: Konrad Wilk Cc: Boris Ostrovsky Signed-off-by: David Vrabel

xen: Remove trailing semicolon from xenbus_register_frontend() definition

2015-03-02T10:38:59Z

Signed-off-by: Yuval Shaia Signed-off-by: David Vrabel

xen: remove DEFINE_XENBUS_DRIVER() macro

2014-10-06T09:27:57Z

The DEFINE_XENBUS_DRIVER() macro looks a bit weird and causes sparse errors. Replace the uses with standard structure definitions instead. This is similar to pci and usb device registration. Signed-off-by: David Vrabel

xen/xenbus: remove unused xenbus_bind_evtchn()

2014-02-28T20:26:23Z

xenbus_bind_evtchn() has no callers so remove it. Signed-off-by: David Vrabel Signed-off-by: Konrad Rzeszutek Wilk Reviewed-by: Boris Ostrovsky

xenbus: delay xenbus frontend resume if xenstored is not running

2013-05-29T13:04:19Z

If the xenbus frontend is located in a domain running xenstored, the device resume is hanging because it is happening before the process resume. This patch adds extra logic to the resume code to check if we are the domain running xenstored and delay the resume if needed. Signed-off-by: Aurelien Chartier [Changes in v2: - Instead of bypassing the resume, process it in a workqueue] [Changes in v3: - Add a struct work in xenbus_device to avoid dynamic allocation - Several small code fixes] [Changes in v4: - Use a dedicated workqueue] [Changes in v5: - Move create_workqueue error handling to xenbus_frontend_dev_resume] Acked-by: Jan Beulich Signed-off-by: Konrad Rzeszutek Wilk

include/ and checkpatch: prefer scanf to attribute__((format(scanf,...)

2012-03-23T23:58:36Z

It's equivalent to __printf, so prefer __scanf. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds