* [PATCH 2/6] Drivers: hv: vmbus: Perform device register in the per-channel work element
2015-03-07 5:10 ` [PATCH 1/6] Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl() K. Y. Srinivasan
@ 2015-03-07 5:10 ` K. Y. Srinivasan
2015-03-07 5:10 ` [PATCH 3/6] Drivers: hv: hv_balloon: keep locks balanced on add_memory() failure K. Y. Srinivasan
` (3 subsequent siblings)
4 siblings, 0 replies; 12+ messages in thread
From: K. Y. Srinivasan @ 2015-03-07 5:10 UTC (permalink / raw)
To: gregkh, linux-kernel, devel, olaf, apw, vkuznets; +Cc: K. Y. Srinivasan
This patch is a continuation of the rescind handling cleanup work. We cannot
block in the global message handling work context especially if we are blocking
waiting for the host to wake us up. I would like to thank
Dexuan Cui <decui@microsoft.com> for observing this problem.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/channel_mgmt.c | 143 +++++++++++++++++++++++++++++++--------------
drivers/hv/connection.c | 6 ++-
drivers/hv/hyperv_vmbus.h | 2 +-
3 files changed, 106 insertions(+), 45 deletions(-)
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 6117891..681c806b 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -23,6 +23,7 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/wait.h>
+#include <linux/delay.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/list.h>
@@ -37,6 +38,10 @@ struct vmbus_channel_message_table_entry {
void (*message_handler)(struct vmbus_channel_message_header *msg);
};
+struct vmbus_rescind_work {
+ struct work_struct work;
+ struct vmbus_channel *channel;
+};
/**
* vmbus_prep_negotiate_resp() - Create default response for Hyper-V Negotiate message
@@ -134,20 +139,6 @@ fw_error:
EXPORT_SYMBOL_GPL(vmbus_prep_negotiate_resp);
-static void vmbus_process_device_unregister(struct work_struct *work)
-{
- struct device *dev;
- struct vmbus_channel *channel = container_of(work,
- struct vmbus_channel,
- work);
-
- dev = get_device(&channel->device_obj->device);
- if (dev) {
- vmbus_device_unregister(channel->device_obj);
- put_device(dev);
- }
-}
-
static void vmbus_sc_creation_cb(struct work_struct *work)
{
struct vmbus_channel *newchannel = container_of(work,
@@ -201,7 +192,6 @@ static void release_channel(struct work_struct *work)
work);
destroy_workqueue(channel->controlwq);
-
kfree(channel);
}
@@ -220,6 +210,39 @@ static void free_channel(struct vmbus_channel *channel)
queue_work(vmbus_connection.work_queue, &channel->work);
}
+static void process_rescind_fn(struct work_struct *work)
+{
+ struct vmbus_rescind_work *rc_work;
+ struct vmbus_channel *channel;
+ struct device *dev;
+
+ rc_work = container_of(work, struct vmbus_rescind_work, work);
+ channel = rc_work->channel;
+
+ /*
+ * We have already acquired a reference on the channel
+ * and so it cannot vanish underneath us.
+ * It is possible (while very unlikely) that we may
+ * get here while the processing of the initial offer
+ * is still not complete. Deal with this situation by
+ * just waiting until the channel is in the correct state.
+ */
+
+ while (channel->work.func != release_channel)
+ msleep(1000);
+
+ if (channel->device_obj) {
+ dev = get_device(&channel->device_obj->device);
+ if (dev) {
+ vmbus_device_unregister(channel->device_obj);
+ put_device(dev);
+ }
+ } else {
+ hv_process_channel_removal(channel,
+ channel->offermsg.child_relid);
+ }
+}
+
static void percpu_channel_enq(void *arg)
{
struct vmbus_channel *channel = arg;
@@ -282,6 +305,46 @@ void vmbus_free_channels(void)
}
}
+static void vmbus_do_device_register(struct work_struct *work)
+{
+ struct hv_device *device_obj;
+ int ret;
+ unsigned long flags;
+ struct vmbus_channel *newchannel = container_of(work,
+ struct vmbus_channel,
+ work);
+
+ ret = vmbus_device_register(newchannel->device_obj);
+ if (ret != 0) {
+ pr_err("unable to add child device object (relid %d)\n",
+ newchannel->offermsg.child_relid);
+ spin_lock_irqsave(&vmbus_connection.channel_lock, flags);
+ list_del(&newchannel->listentry);
+ device_obj = newchannel->device_obj;
+ newchannel->device_obj = NULL;
+ spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags);
+
+ if (newchannel->target_cpu != get_cpu()) {
+ put_cpu();
+ smp_call_function_single(newchannel->target_cpu,
+ percpu_channel_deq, newchannel, true);
+ } else {
+ percpu_channel_deq(newchannel);
+ put_cpu();
+ }
+
+ kfree(device_obj);
+ if (!newchannel->rescind) {
+ free_channel(newchannel);
+ return;
+ }
+ }
+ /*
+ * The next state for this channel is to be freed.
+ */
+ INIT_WORK(&newchannel->work, release_channel);
+}
+
/*
* vmbus_process_offer - Process the offer by creating a channel/device
* associated with this offer
@@ -291,7 +354,6 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
struct vmbus_channel *channel;
bool fnew = true;
bool enq = false;
- int ret;
unsigned long flags;
/* Make sure this is a new offer */
@@ -393,16 +455,13 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
* Add the new device to the bus. This will kick off device-driver
* binding which eventually invokes the device driver's AddDevice()
* method.
+ * Invoke this call on the per-channel work context.
+ * Until we return from this function, rescind offer message
+ * cannot be processed as we are running on the global message
+ * handling work.
*/
- ret = vmbus_device_register(newchannel->device_obj);
- if (ret != 0) {
- pr_err("unable to add child device object (relid %d)\n",
- newchannel->offermsg.child_relid);
-
- kfree(newchannel->device_obj);
- goto err_deq_chan;
- }
-
+ INIT_WORK(&newchannel->work, vmbus_do_device_register);
+ queue_work(newchannel->controlwq, &newchannel->work);
return;
err_deq_chan:
@@ -556,33 +615,31 @@ static void vmbus_onoffer_rescind(struct vmbus_channel_message_header *hdr)
{
struct vmbus_channel_rescind_offer *rescind;
struct vmbus_channel *channel;
- unsigned long flags;
+ struct vmbus_rescind_work *rc_work;
rescind = (struct vmbus_channel_rescind_offer *)hdr;
- channel = relid2channel(rescind->child_relid);
+ channel = relid2channel(rescind->child_relid, true);
if (channel == NULL) {
hv_process_channel_removal(NULL, rescind->child_relid);
return;
}
- spin_lock_irqsave(&channel->lock, flags);
- channel->rescind = true;
- spin_unlock_irqrestore(&channel->lock, flags);
-
- if (channel->device_obj) {
- /*
- * We will have to unregister this device from the
- * driver core. Do this in the per-channel work context.
- * Note that we are currently executing on the global
- * workq for handling messages from the host.
- */
- INIT_WORK(&channel->work, vmbus_process_device_unregister);
- queue_work(channel->controlwq, &channel->work);
- } else {
- hv_process_channel_removal(channel,
- channel->offermsg.child_relid);
+ /*
+ * We have acquired a reference on the channel and have posted
+ * the rescind state. Perform further cleanup in a work context
+ * that is different from the global work context in which
+ * we process messages from the host (we are currently executing
+ * on that global context.
+ */
+ rc_work = kzalloc(sizeof(struct vmbus_rescind_work), GFP_KERNEL);
+ if (!rc_work) {
+ pr_err("Unable to allocate memory for rescind processing ");
+ return;
}
+ rc_work->channel = channel;
+ INIT_WORK(&rc_work->work, process_rescind_fn);
+ schedule_work(&rc_work->work);
}
/*
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index 583d7d4..8bcd307 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -270,7 +270,7 @@ static struct vmbus_channel *pcpu_relid2channel(u32 relid)
* relid2channel - Get the channel object given its
* child relative id (ie channel id)
*/
-struct vmbus_channel *relid2channel(u32 relid)
+struct vmbus_channel *relid2channel(u32 relid, bool rescind)
{
struct vmbus_channel *channel;
struct vmbus_channel *found_channel = NULL;
@@ -282,6 +282,8 @@ struct vmbus_channel *relid2channel(u32 relid)
list_for_each_entry(channel, &vmbus_connection.chn_list, listentry) {
if (channel->offermsg.child_relid == relid) {
found_channel = channel;
+ if (rescind)
+ found_channel->rescind = true;
break;
} else if (!list_empty(&channel->sc_list)) {
/*
@@ -292,6 +294,8 @@ struct vmbus_channel *relid2channel(u32 relid)
sc_list);
if (cur_sc->offermsg.child_relid == relid) {
found_channel = cur_sc;
+ if (rescind)
+ found_channel->rescind = true;
break;
}
}
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 88af4ec..6339589 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -698,7 +698,7 @@ void vmbus_device_unregister(struct hv_device *device_obj);
/* VmbusChildDeviceDestroy( */
/* struct hv_device *); */
-struct vmbus_channel *relid2channel(u32 relid);
+struct vmbus_channel *relid2channel(u32 relid, bool rescind);
void vmbus_free_channels(void);
--
1.7.4.1
^ permalink raw reply [flat|nested] 12+ messages in thread* [PATCH 3/6] Drivers: hv: hv_balloon: keep locks balanced on add_memory() failure
2015-03-07 5:10 ` [PATCH 1/6] Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl() K. Y. Srinivasan
2015-03-07 5:10 ` [PATCH 2/6] Drivers: hv: vmbus: Perform device register in the per-channel work element K. Y. Srinivasan
@ 2015-03-07 5:10 ` K. Y. Srinivasan
2015-03-07 5:10 ` [PATCH 4/6] Drivers: hv: hv_balloon: don't lose memory when onlining order is not natural K. Y. Srinivasan
` (2 subsequent siblings)
4 siblings, 0 replies; 12+ messages in thread
From: K. Y. Srinivasan @ 2015-03-07 5:10 UTC (permalink / raw)
To: gregkh, linux-kernel, devel, olaf, apw, vkuznets; +Cc: K. Y. Srinivasan
From: Vitaly Kuznetsov <vkuznets@redhat.com>
When add_memory() fails the following BUG is observed:
[ 743.646107] hv_balloon: hot_add memory failed error is -17
[ 743.679973]
[ 743.680930] =====================================
[ 743.680930] [ BUG: bad unlock balance detected! ]
[ 743.680930] 3.19.0-rc5_bug1131426+ #552 Not tainted
[ 743.680930] -------------------------------------
[ 743.680930] kworker/0:2/255 is trying to release lock (&dm_device.ha_region_mutex) at:
[ 743.680930] [<ffffffff81aae5fe>] mutex_unlock+0xe/0x10
[ 743.680930] but there are no more locks to release!
This happens as we don't acquire ha_region_mutex and hot_add_req() expects us
to as it does unconditional mutex_unlock(). Acquire the lock on the error path.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/hv_balloon.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index c5bb872..f1f17c5 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -652,6 +652,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size,
}
has->ha_end_pfn -= HA_CHUNK;
has->covered_end_pfn -= processed_pfn;
+ mutex_lock(&dm_device.ha_region_mutex);
break;
}
--
1.7.4.1
^ permalink raw reply [flat|nested] 12+ messages in thread* [PATCH 4/6] Drivers: hv: hv_balloon: don't lose memory when onlining order is not natural
2015-03-07 5:10 ` [PATCH 1/6] Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl() K. Y. Srinivasan
2015-03-07 5:10 ` [PATCH 2/6] Drivers: hv: vmbus: Perform device register in the per-channel work element K. Y. Srinivasan
2015-03-07 5:10 ` [PATCH 3/6] Drivers: hv: hv_balloon: keep locks balanced on add_memory() failure K. Y. Srinivasan
@ 2015-03-07 5:10 ` K. Y. Srinivasan
2015-03-07 5:10 ` [PATCH 5/6] Correcting truncation error for constant HV_CRASH_CTL_CRASH_NOTIFY K. Y. Srinivasan
2015-03-07 5:10 ` [PATCH 6/6] hv: vmbus: missing curly braces in vmbus_process_offer() K. Y. Srinivasan
4 siblings, 0 replies; 12+ messages in thread
From: K. Y. Srinivasan @ 2015-03-07 5:10 UTC (permalink / raw)
To: gregkh, linux-kernel, devel, olaf, apw, vkuznets; +Cc: K. Y. Srinivasan
From: Vitaly Kuznetsov <vkuznets@redhat.com>
Memory blocks can be onlined in random order. When this order is not natural
some memory pages are not onlined because of the redundant check in
hv_online_page().
Here is a real world scenario:
1) Host tries to hot-add the following (process_hot_add):
pg_start=rg_start=0x48000, pfn_cnt=111616, rg_size=262144
2) This results in adding 4 memory blocks:
[ 109.057866] init_memory_mapping: [mem 0x48000000-0x4fffffff]
[ 114.102698] init_memory_mapping: [mem 0x50000000-0x57ffffff]
[ 119.168039] init_memory_mapping: [mem 0x58000000-0x5fffffff]
[ 124.233053] init_memory_mapping: [mem 0x60000000-0x67ffffff]
The last one is incomplete but we have special has->covered_end_pfn counter to
avoid onlining non-backed frames and hv_bring_pgs_online() function to bring
them online later on.
3) Now we have 4 offline memory blocks: /sys/devices/system/memory/memory9-12
$ for f in /sys/devices/system/memory/memory*/state; do echo $f `cat $f`; done | grep -v onlin
/sys/devices/system/memory/memory10/state offline
/sys/devices/system/memory/memory11/state offline
/sys/devices/system/memory/memory12/state offline
/sys/devices/system/memory/memory9/state offline
4) We bring them online in non-natural order:
$grep MemTotal /proc/meminfo
MemTotal: 966348 kB
$echo online > /sys/devices/system/memory/memory12/state && grep MemTotal /proc/meminfo
MemTotal: 1019596 kB
$echo online > /sys/devices/system/memory/memory11/state && grep MemTotal /proc/meminfo
MemTotal: 1150668 kB
$echo online > /sys/devices/system/memory/memory9/state && grep MemTotal /proc/meminfo
MemTotal: 1150668 kB
As you can see memory9 block gives us zero additional memory. We can also
observe a huge discrepancy between host- and guest-reported memory sizes.
The root cause of the issue is the redundant pg >= covered_start_pfn check (and
covered_start_pfn advancing) in hv_online_page(). When upper memory block in
being onlined before the lower one (memory12 and memory11 in the above case) we
advance the covered_start_pfn pointer and all memory9 pages do not pass the
check. If the assumption that host always gives us requests in sequential order
and pg_start always equals rg_start when the first request for the new HA
region is received (that's the case in my testing) is correct than we can get
rid of covered_start_pfn and pg >= start_pfn check in hv_online_page() is
sufficient.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/hv_balloon.c | 14 ++++----------
1 files changed, 4 insertions(+), 10 deletions(-)
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index f1f17c5..014256a 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -428,14 +428,13 @@ struct dm_info_msg {
* currently hot added. We hot add in multiples of 128M
* chunks; it is possible that we may not be able to bring
* online all the pages in the region. The range
- * covered_start_pfn : covered_end_pfn defines the pages that can
+ * covered_end_pfn defines the pages that can
* be brough online.
*/
struct hv_hotadd_state {
struct list_head list;
unsigned long start_pfn;
- unsigned long covered_start_pfn;
unsigned long covered_end_pfn;
unsigned long ha_end_pfn;
unsigned long end_pfn;
@@ -679,8 +678,7 @@ static void hv_online_page(struct page *pg)
list_for_each(cur, &dm_device.ha_region_list) {
has = list_entry(cur, struct hv_hotadd_state, list);
- cur_start_pgp = (unsigned long)
- pfn_to_page(has->covered_start_pfn);
+ cur_start_pgp = (unsigned long)pfn_to_page(has->start_pfn);
cur_end_pgp = (unsigned long)pfn_to_page(has->covered_end_pfn);
if (((unsigned long)pg >= cur_start_pgp) &&
@@ -692,7 +690,6 @@ static void hv_online_page(struct page *pg)
__online_page_set_limits(pg);
__online_page_increment_counters(pg);
__online_page_free(pg);
- has->covered_start_pfn++;
}
}
}
@@ -736,10 +733,9 @@ static bool pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt)
* is, update it.
*/
- if (has->covered_end_pfn != start_pfn) {
+ if (has->covered_end_pfn != start_pfn)
has->covered_end_pfn = start_pfn;
- has->covered_start_pfn = start_pfn;
- }
+
return true;
}
@@ -784,7 +780,6 @@ static unsigned long handle_pg_range(unsigned long pg_start,
pgs_ol = pfn_cnt;
hv_bring_pgs_online(start_pfn, pgs_ol);
has->covered_end_pfn += pgs_ol;
- has->covered_start_pfn += pgs_ol;
pfn_cnt -= pgs_ol;
}
@@ -845,7 +840,6 @@ static unsigned long process_hot_add(unsigned long pg_start,
list_add_tail(&ha_region->list, &dm_device.ha_region_list);
ha_region->start_pfn = rg_start;
ha_region->ha_end_pfn = rg_start;
- ha_region->covered_start_pfn = pg_start;
ha_region->covered_end_pfn = pg_start;
ha_region->end_pfn = rg_start + rg_size;
}
--
1.7.4.1
^ permalink raw reply [flat|nested] 12+ messages in thread* [PATCH 5/6] Correcting truncation error for constant HV_CRASH_CTL_CRASH_NOTIFY
2015-03-07 5:10 ` [PATCH 1/6] Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl() K. Y. Srinivasan
` (2 preceding siblings ...)
2015-03-07 5:10 ` [PATCH 4/6] Drivers: hv: hv_balloon: don't lose memory when onlining order is not natural K. Y. Srinivasan
@ 2015-03-07 5:10 ` K. Y. Srinivasan
2015-03-07 5:10 ` [PATCH 6/6] hv: vmbus: missing curly braces in vmbus_process_offer() K. Y. Srinivasan
4 siblings, 0 replies; 12+ messages in thread
From: K. Y. Srinivasan @ 2015-03-07 5:10 UTC (permalink / raw)
To: gregkh, linux-kernel, devel, olaf, apw, vkuznets
Cc: Nick Meier, K. Y. Srinivasan
From: Nick Meier <nmeier@microsoft.com>
HV_CRASH_CTL_CRASH_NOTIFY is a 64 bit number. Depending on the usage context,
the value may be truncated. This patch is in response from the following
email from Intel:
[char-misc:char-misc-testing 25/45] drivers/hv/vmbus_drv.c:67:9: sparse:
constant 0x8000000000000000 is so big it is unsigned long
tree: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-testing
head: b3de8e3719e582f3182bb504295e4a8e43c8c96f
commit: 96c1d0581d00f7abe033350edb021a9d947d8d81 [25/45] Drivers: hv: vmbus: Add support for VMBus panic notifier handler
reproduce:
# apt-get install sparse
git checkout 96c1d0581d00f7abe033350edb021a9d947d8d81
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
drivers/hv/vmbus_drv.c:67:9: sparse: constant 0x8000000000000000 is so big it is unsigned long
...
Signed-off-by: Nick Meier <nmeier@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/hyperv_vmbus.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 6339589..c8e27e0 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -58,7 +58,7 @@ enum hv_cpuid_function {
#define HV_X64_MSR_CRASH_P4 0x40000104
#define HV_X64_MSR_CRASH_CTL 0x40000105
-#define HV_CRASH_CTL_CRASH_NOTIFY 0x8000000000000000
+#define HV_CRASH_CTL_CRASH_NOTIFY (1ULL << 63)
/* Define version of the synthetic interrupt controller. */
#define HV_SYNIC_VERSION (1)
--
1.7.4.1
^ permalink raw reply [flat|nested] 12+ messages in thread* [PATCH 6/6] hv: vmbus: missing curly braces in vmbus_process_offer()
2015-03-07 5:10 ` [PATCH 1/6] Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl() K. Y. Srinivasan
` (3 preceding siblings ...)
2015-03-07 5:10 ` [PATCH 5/6] Correcting truncation error for constant HV_CRASH_CTL_CRASH_NOTIFY K. Y. Srinivasan
@ 2015-03-07 5:10 ` K. Y. Srinivasan
4 siblings, 0 replies; 12+ messages in thread
From: K. Y. Srinivasan @ 2015-03-07 5:10 UTC (permalink / raw)
To: gregkh, linux-kernel, devel, olaf, apw, vkuznets
Cc: Dan Carpenter, K. Y. Srinivasan
From: Dan Carpenter <dan.carpenter@oracle.com>
The indenting makes it clear that there were curly braces intended here.
Fixes: 2dd37cb81580 ('Drivers: hv: vmbus: Handle both rescind and offer messages in the same context')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/channel_mgmt.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 681c806b..1bc2378 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -413,7 +413,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
newchannel->state = CHANNEL_OPEN_STATE;
channel->num_sc++;
- if (channel->sc_creation_callback != NULL)
+ if (channel->sc_creation_callback != NULL) {
/*
* We need to invoke the sub-channel creation
* callback; invoke this in a seperate work
@@ -425,6 +425,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
vmbus_sc_creation_cb);
queue_work(newchannel->controlwq,
&newchannel->work);
+ }
return;
}
--
1.7.4.1
^ permalink raw reply [flat|nested] 12+ messages in thread