diff options
| author | Stephen Hemminger <stephen@networkplumber.org> | 2017-02-12 07:02:19 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-14 19:20:35 +0100 |
| commit | 37cdd991fac810a727cd285629d1640fcf53cd19 (patch) | |
| tree | 9b0811c05bce7321af14ae8a40df57bed019fce7 /drivers/hv/connection.c | |
| parent | vmbus: callback is in softirq not workqueue (diff) | |
| download | linux-37cdd991fac810a727cd285629d1640fcf53cd19.tar.xz linux-37cdd991fac810a727cd285629d1640fcf53cd19.zip | |
vmbus: put related per-cpu variable together
The hv_context structure had several arrays which were per-cpu
and was allocating small structures (tasklet_struct). Instead use
a single per-cpu array.
Signed-off-by: Stephen Hemminger <sthemmin@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/connection.c')
| -rw-r--r-- | drivers/hv/connection.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 1766ef03e78d..158f12823baf 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -93,12 +93,10 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo, * all the CPUs. This is needed for kexec to work correctly where * the CPU attempting to connect may not be CPU 0. */ - if (version >= VERSION_WIN8_1) { - msg->target_vcpu = hv_context.vp_index[get_cpu()]; - put_cpu(); - } else { + if (version >= VERSION_WIN8_1) + msg->target_vcpu = hv_context.vp_index[smp_processor_id()]; + else msg->target_vcpu = 0; - } /* * Add to list before we send the request since we may @@ -269,12 +267,12 @@ void vmbus_disconnect(void) */ static struct vmbus_channel *pcpu_relid2channel(u32 relid) { + struct hv_per_cpu_context *hv_cpu + = this_cpu_ptr(hv_context.cpu_context); + struct vmbus_channel *found_channel = NULL; struct vmbus_channel *channel; - struct vmbus_channel *found_channel = NULL; - int cpu = smp_processor_id(); - struct list_head *pcpu_head = &hv_context.percpu_list[cpu]; - list_for_each_entry(channel, pcpu_head, percpu_list) { + list_for_each_entry(channel, &hv_cpu->chan_list, percpu_list) { if (channel->offermsg.child_relid == relid) { found_channel = channel; break; @@ -379,6 +377,7 @@ static void process_chn_event(u32 relid) */ void vmbus_on_event(unsigned long data) { + struct hv_per_cpu_context *hv_cpu = (void *)data; unsigned long *recv_int_page; u32 maxbits, relid; @@ -391,8 +390,7 @@ void vmbus_on_event(unsigned long data) * can be directly checked to get the id of the channel * that has the interrupt pending. */ - int cpu = smp_processor_id(); - void *page_addr = hv_context.synic_event_page[cpu]; + void *page_addr = hv_cpu->synic_event_page; union hv_synic_event_flags *event = (union hv_synic_event_flags *)page_addr + VMBUS_MESSAGE_SINT; |