diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hv/hv.c | 85 | ||||
| -rw-r--r-- | drivers/hv/hyperv_vmbus.h | 4 | ||||
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 8 |
3 files changed, 63 insertions, 34 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index ae4923756d98..88f4096fa078 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -265,6 +265,59 @@ u16 hv_signal_event(void *con_id) return status; } + +int hv_synic_alloc(void) +{ + size_t size = sizeof(struct tasklet_struct); + int cpu; + + for_each_online_cpu(cpu) { + hv_context.event_dpc[cpu] = kmalloc(size, GFP_ATOMIC); + if (hv_context.event_dpc[cpu] == NULL) { + pr_err("Unable to allocate event dpc\n"); + goto err; + } + tasklet_init(hv_context.event_dpc[cpu], vmbus_on_event, cpu); + + hv_context.synic_message_page[cpu] = + (void *)get_zeroed_page(GFP_ATOMIC); + + if (hv_context.synic_message_page[cpu] == NULL) { + pr_err("Unable to allocate SYNIC message page\n"); + goto err; + } + + hv_context.synic_event_page[cpu] = + (void *)get_zeroed_page(GFP_ATOMIC); + + if (hv_context.synic_event_page[cpu] == NULL) { + pr_err("Unable to allocate SYNIC event page\n"); + goto err; + } + } + + return 0; +err: + return -ENOMEM; +} + +void hv_synic_free_cpu(int cpu) +{ + kfree(hv_context.event_dpc[cpu]); + if (hv_context.synic_message_page[cpu]) + free_page((unsigned long)hv_context.synic_event_page[cpu]); + if (hv_context.synic_message_page[cpu]) + free_page((unsigned long)hv_context.synic_message_page[cpu]); +} + +void hv_synic_free(void) +{ + int cpu; + + for_each_online_cpu(cpu) + hv_synic_free_cpu(cpu); +} + /* * hv_synic_init - Initialize the Synthethic Interrupt Controller. * @@ -289,30 +342,6 @@ void hv_synic_init(void *arg) /* Check the version */ rdmsrl(HV_X64_MSR_SVERSION, version); - hv_context.event_dpc[cpu] = kmalloc(sizeof(struct tasklet_struct), - GFP_ATOMIC); - if (hv_context.event_dpc[cpu] == NULL) { - pr_err("Unable to allocate event dpc\n"); - goto cleanup; - } - tasklet_init(hv_context.event_dpc[cpu], vmbus_on_event, cpu); - - hv_context.synic_message_page[cpu] = - (void *)get_zeroed_page(GFP_ATOMIC); - - if (hv_context.synic_message_page[cpu] == NULL) { - pr_err("Unable to allocate SYNIC message page\n"); - goto cleanup; - } - - hv_context.synic_event_page[cpu] = - (void *)get_zeroed_page(GFP_ATOMIC); - - if (hv_context.synic_event_page[cpu] == NULL) { - pr_err("Unable to allocate SYNIC event page\n"); - goto cleanup; - } - /* Setup the Synic's message page */ rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64); simp.simp_enabled = 1; @@ -355,14 +384,6 @@ void hv_synic_init(void *arg) rdmsrl(HV_X64_MSR_VP_INDEX, vp_index); hv_context.vp_index[cpu] = (u32)vp_index; return; - -cleanup: - if (hv_context.synic_event_page[cpu]) - free_page((unsigned long)hv_context.synic_event_page[cpu]); - - if (hv_context.synic_message_page[cpu]) - free_page((unsigned long)hv_context.synic_message_page[cpu]); - return; } /* diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 12f2f9e989f7..d84918fe19ab 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -527,6 +527,10 @@ extern int hv_post_message(union hv_connection_id connection_id, extern u16 hv_signal_event(void *con_id); +extern int hv_synic_alloc(void); + +extern void hv_synic_free(void); + extern void hv_synic_init(void *irqarg); extern void hv_synic_cleanup(void *arg); diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 4004e54ef05d..a2464bf07c49 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -563,6 +563,9 @@ static int vmbus_bus_init(int irq) */ hv_register_vmbus_handler(irq, vmbus_isr); + ret = hv_synic_alloc(); + if (ret) + goto err_alloc; /* * Initialize the per-cpu interrupt state and * connect to the host. @@ -570,13 +573,14 @@ static int vmbus_bus_init(int irq) on_each_cpu(hv_synic_init, NULL, 1); ret = vmbus_connect(); if (ret) - goto err_irq; + goto err_alloc; vmbus_request_offers(); return 0; -err_irq: +err_alloc: + hv_synic_free(); free_irq(irq, hv_acpi_dev); err_unregister: |