diff options
| author | K. Y. Srinivasan <kys@microsoft.com> | 2015-08-05 00:52:38 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-05 11:41:31 -0700 |
| commit | 9f01ec53458d9e9b68f1c555e773b5d1a1f66e94 (patch) | |
| tree | ce76ed3d4a11ec2035a42a154a735363f642250f /drivers/hv/hv.c | |
| parent | 3546448338e76a52d4f86eb3680cb2934e22d89b (diff) | |
| download | linux-next-9f01ec53458d9e9b68f1c555e773b5d1a1f66e94.tar.gz | |
Drivers: hv: vmbus: Improve the CPU affiliation for channels
The current code tracks the assigned CPUs within a NUMA node in the context of
the primary channel. So, if we have a VM with a single NUMA node with 8 VCPUs, we may
end up unevenly distributing the channel load. Fix the issue by tracking affiliations
globally.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/hv.c')
| -rw-r--r-- | drivers/hv/hv.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 41d8072d61d9..fd93cfde96d0 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -332,6 +332,13 @@ int hv_synic_alloc(void) size_t ced_size = sizeof(struct clock_event_device); int cpu; + hv_context.hv_numa_map = kzalloc(sizeof(struct cpumask) * nr_node_ids, + GFP_ATOMIC); + if (hv_context.hv_numa_map == NULL) { + pr_err("Unable to allocate NUMA map\n"); + goto err; + } + for_each_online_cpu(cpu) { hv_context.event_dpc[cpu] = kmalloc(size, GFP_ATOMIC); if (hv_context.event_dpc[cpu] == NULL) { @@ -345,6 +352,7 @@ int hv_synic_alloc(void) pr_err("Unable to allocate clock event device\n"); goto err; } + hv_init_clockevent_device(hv_context.clk_evt[cpu], cpu); hv_context.synic_message_page[cpu] = @@ -393,6 +401,7 @@ void hv_synic_free(void) { int cpu; + kfree(hv_context.hv_numa_map); for_each_online_cpu(cpu) hv_synic_free_cpu(cpu); } |