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29d11cfd86
linux/drivers/xen
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Wengang Wang 29d11cfd86 xen/grant-table: log the lack of grants 
log a message when we enter this situation:
1) we already allocated the max number of available grants from hypervisor
and
2) we still need more (but the request fails because of 1)).

Sometimes the lack of grants causes IO hangs in xen_blkfront devices.
Adding this log would help debuging.

Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2017-07-23 08:09:43 +02:00
..
events xen: features and fixes for 4.13-rc1 2017-07-06 19:11:24 -07:00
xen-pciback xen: modify xenstore watch event interface 2017-02-09 11:26:49 -05:00
xenbus xen: avoid deadlock in xenbus driver 2017-06-25 13:11:22 +02:00
xenfs fs: constify tree_descr arrays passed to simple_fill_super() 2017-04-26 23:54:06 -04:00
acpi.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
arm-device.c Xen: ARM: Zero reserved fields of xatp before making hypervisor call 2017-01-03 10:06:13 -08:00
balloon.c xen/balloon: decorate PV-only parts with #ifdef CONFIG_XEN_PV 2017-05-02 11:09:56 +02:00
biomerge.c xen/biomerge: Don't allow biovec's to be merged when Linux is not using 4KB pages 2015-10-23 14:20:36 +01:00
cpu_hotplug.c xen: modify xenstore watch event interface 2017-02-09 11:26:49 -05:00
dbgp.c
efi.c xen: Implement EFI reset_system callback 2017-05-02 12:06:50 +02:00
evtchn.c xen-evtchn: Bind dyn evtchn:qemu-dm interrupt to next online VCPU 2017-06-13 15:30:27 +02:00
fallback.c
features.c xen: audit usages of module.h ; remove unnecessary instances 2016-03-21 15:13:32 +00:00
gntalloc.c xen: set error code on failures 2016-12-08 07:53:50 +01:00
gntdev.c drivers, xen: convert grant_map.users from atomic_t to refcount_t 2017-03-13 12:45:18 -04:00
grant-table.c xen/grant-table: log the lack of grants 2017-07-23 08:09:43 +02:00
Kconfig ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services 2016-07-06 10:34:46 +01:00
Makefile Xen: ARM: Add support for mapping platform device mmio 2016-07-06 10:34:43 +01:00
manage.c xen: features and fixes for 4.13-rc1 2017-07-06 19:11:24 -07:00
mcelog.c x86/MCE, xen/mcelog: Make /dev/mcelog registration messages more precise 2017-06-20 23:25:19 +02:00
pci.c xen/pci: Try harder to get PXM information for Xen 2015-04-15 10:57:28 +01:00
pcpu.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
platform-pci.c xen: Revert commits da72ff5bfc and 72a9b18629 2017-05-02 11:18:05 +02:00
preempt.c xen/preempt: use need_resched() instead of should_resched() 2015-08-20 12:24:14 +01:00
privcmd.c xen/privcmd: Support correctly 64KB page granularity when mapping memory 2017-06-07 11:23:14 +02:00
privcmd.h
swiotlb-xen.c xen-swiotlb: remove xen_swiotlb_set_dma_mask 2017-06-28 06:54:50 -07:00
sys-hypervisor.c xen: add sysfs node for hypervisor build id 2017-06-15 08:50:37 +02:00
time.c xen: add static initialization of steal_clock op to xen_time_ops 2016-07-26 14:07:06 +01:00
tmem.c fs: switch ->s_uuid to uuid_t 2017-06-05 16:59:12 +02:00
xen-acpi-cpuhotplug.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
xen-acpi-memhotplug.c
xen-acpi-pad.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
xen-acpi-processor.c xen/acpi: upload PM state from init-domain to Xen 2017-03-23 12:00:02 -04:00
xen-balloon.c xen: modify xenstore watch event interface 2017-02-09 11:26:49 -05:00
xen-scsiback.c xen/scsiback: Make TMF processing slightly faster 2017-07-06 22:58:03 -07:00
xen-selfballoon.c mm, frontswap: convert frontswap_enabled to static key 2016-07-26 16:19:19 -07:00
xen-stub.c
xlate_mmu.c Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn 2016-07-06 10:34:42 +01:00