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vmbus: put related per-cpu variable together

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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>
This commit is contained in:
Stephen Hemminger
2017-02-11 23:02:19 -07:00
committed by Greg Kroah-Hartman
parent 51c6ce2ae3
commit 37cdd991fa
5 changed files with 141 additions and 132 deletions
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20
drivers/hv/connection.c
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@@ -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;