diff options
| author | Dexuan Cui <decui@microsoft.com> | 2015-12-15 01:01:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-15 04:15:05 +0100 |
| commit | d6f591e339d23f434efda11917da511870891472 (patch) | |
| tree | 031bf2d9e6c519789fe7413d75587c87a00d334c /drivers/hv | |
| parent | Drivers: hv: vmbus: release relid on error in vmbus_process_offer() (diff) | |
| download | linux-d6f591e339d23f434efda11917da511870891472.tar.xz linux-d6f591e339d23f434efda11917da511870891472.zip | |
Drivers: hv: vmbus: channge vmbus_connection.channel_lock to mutex
spinlock is unnecessary here.
mutex is enough.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 12 | ||||
| -rw-r--r-- | drivers/hv/connection.c | 7 | ||||
| -rw-r--r-- | drivers/hv/hyperv_vmbus.h | 2 |
3 files changed, 10 insertions, 11 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 9c9da3a6c03a..d0131717c1d5 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -206,9 +206,9 @@ void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid) } if (channel->primary_channel == NULL) { - spin_lock_irqsave(&vmbus_connection.channel_lock, flags); + mutex_lock(&vmbus_connection.channel_mutex); list_del(&channel->listentry); - spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags); + mutex_unlock(&vmbus_connection.channel_mutex); primary_channel = channel; } else { @@ -253,7 +253,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) unsigned long flags; /* Make sure this is a new offer */ - spin_lock_irqsave(&vmbus_connection.channel_lock, flags); + mutex_lock(&vmbus_connection.channel_mutex); list_for_each_entry(channel, &vmbus_connection.chn_list, listentry) { if (!uuid_le_cmp(channel->offermsg.offer.if_type, @@ -269,7 +269,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) list_add_tail(&newchannel->listentry, &vmbus_connection.chn_list); - spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags); + mutex_unlock(&vmbus_connection.channel_mutex); if (!fnew) { /* @@ -341,9 +341,9 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) err_deq_chan: vmbus_release_relid(newchannel->offermsg.child_relid); - spin_lock_irqsave(&vmbus_connection.channel_lock, flags); + mutex_lock(&vmbus_connection.channel_mutex); list_del(&newchannel->listentry); - spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags); + mutex_unlock(&vmbus_connection.channel_mutex); if (newchannel->target_cpu != get_cpu()) { put_cpu(); diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 4fc2e8836e60..521f48ed188e 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -146,7 +146,7 @@ int vmbus_connect(void) spin_lock_init(&vmbus_connection.channelmsg_lock); INIT_LIST_HEAD(&vmbus_connection.chn_list); - spin_lock_init(&vmbus_connection.channel_lock); + mutex_init(&vmbus_connection.channel_mutex); /* * Setup the vmbus event connection for channel interrupt @@ -282,11 +282,10 @@ struct vmbus_channel *relid2channel(u32 relid) { struct vmbus_channel *channel; struct vmbus_channel *found_channel = NULL; - unsigned long flags; struct list_head *cur, *tmp; struct vmbus_channel *cur_sc; - spin_lock_irqsave(&vmbus_connection.channel_lock, flags); + mutex_lock(&vmbus_connection.channel_mutex); list_for_each_entry(channel, &vmbus_connection.chn_list, listentry) { if (channel->offermsg.child_relid == relid) { found_channel = channel; @@ -305,7 +304,7 @@ struct vmbus_channel *relid2channel(u32 relid) } } } - spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags); + mutex_unlock(&vmbus_connection.channel_mutex); return found_channel; } diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 9beeb148797f..4d67e984ac4f 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -683,7 +683,7 @@ struct vmbus_connection { /* List of channels */ struct list_head chn_list; - spinlock_t channel_lock; + struct mutex channel_mutex; struct workqueue_struct *work_queue; }; |