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| author | K. Y. Srinivasan <kys@microsoft.com> | 2016-02-26 15:13:21 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-01 16:57:20 -0800 |
| commit | d81274aae61c0a045cd0f34191c51fa64ba58bc4 (patch) | |
| tree | 974d675cc792cf04c456e0d09754e6bc6c4ebbe5 /drivers/hv/vmbus_drv.c | |
| parent | e66853b09017a788dc384dadce9323396dae3293 (diff) | |
| download | linux-d81274aae61c0a045cd0f34191c51fa64ba58bc4.tar.gz linux-d81274aae61c0a045cd0f34191c51fa64ba58bc4.tar.bz2 linux-d81274aae61c0a045cd0f34191c51fa64ba58bc4.zip | |
Drivers: hv: vmbus: Support handling messages on multiple CPUs
Starting with Windows 2012 R2, message inteerupts can be delivered
on any VCPU in the guest. Support this functionality.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/vmbus_drv.c')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 6cd12f108a32..64713ff47e36 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -45,7 +45,6 @@ static struct acpi_device *hv_acpi_dev; -static struct tasklet_struct msg_dpc; static struct completion probe_event; @@ -712,7 +711,7 @@ static void hv_process_timer_expiration(struct hv_message *msg, int cpu) vmbus_signal_eom(msg); } -static void vmbus_on_msg_dpc(unsigned long data) +void vmbus_on_msg_dpc(unsigned long data) { int cpu = smp_processor_id(); void *page_addr = hv_context.synic_message_page[cpu]; @@ -800,7 +799,7 @@ static void vmbus_isr(void) if (msg->header.message_type == HVMSG_TIMER_EXPIRED) hv_process_timer_expiration(msg, cpu); else - tasklet_schedule(&msg_dpc); + tasklet_schedule(hv_context.msg_dpc[cpu]); } } @@ -824,8 +823,6 @@ static int vmbus_bus_init(void) return ret; } - tasklet_init(&msg_dpc, vmbus_on_msg_dpc, 0); - ret = bus_register(&hv_bus); if (ret) goto err_cleanup; @@ -1321,7 +1318,8 @@ static void __exit vmbus_exit(void) hv_synic_clockevents_cleanup(); vmbus_disconnect(); hv_remove_vmbus_irq(); - tasklet_kill(&msg_dpc); + for_each_online_cpu(cpu) + tasklet_kill(hv_context.msg_dpc[cpu]); vmbus_free_channels(); if (ms_hyperv.misc_features & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE) { unregister_die_notifier(&hyperv_die_block); |