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Drivers: hv: Manage event tasklets on per-cpu basis

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Now that we can potentially take vmbus interrupts on any CPU, make the
tasklets per-CPU.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan
2012-12-01 06:46:53 -08:00
committed by Greg Kroah-Hartman
parent 0198631328
commit db11f12a11
3 changed files with 19 additions and 3 deletions
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12
drivers/hv/hv.c
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@@ -27,6 +27,7 @@
#include <linux/vmalloc.h>
#include <linux/hyperv.h>
#include <linux/version.h>
#include <linux/interrupt.h>
#include <asm/hyperv.h>
#include "hyperv_vmbus.h"
@@ -137,6 +138,8 @@ int hv_init(void)
sizeof(void *) * NR_CPUS);
memset(hv_context.vp_index, 0,
sizeof(int) * NR_CPUS);
memset(hv_context.event_dpc, 0,
sizeof(void *) * NR_CPUS);
max_leaf = query_hypervisor_info();
@@ -285,6 +288,15 @@ void hv_synic_init(void *irqarg)
/* Check the version */
rdmsrl(HV_X64_MSR_SVERSION, version);
hv_context.event_dpc[cpu] = (struct tasklet_struct *)
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);