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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2018-11-30 15:23:18 +0100 |
|---|---|---|
| committer | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2018-11-30 15:23:18 +0100 |
| commit | d79e7d051790d67ee3993eebf93081b8db0d3d50 (patch) | |
| tree | 9bfe34f5a1c49c834ed8c5b4ee5ee4d4afd94bf5 /drivers/hv | |
| parent | b6a8fc645976fb85cf38a78474aff4eac4521e8f (diff) | |
| parent | b32d16ec995683be888520d12d8f2833efee5dae (diff) | |
Merge tag 'v4.19.5' into linux-4.19.y-rt
This is the 4.19.5 stable release
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 0f0e091c117c..c4a1ebcfffb6 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -606,16 +606,18 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type) bool perf_chn = vmbus_devs[dev_type].perf_device; struct vmbus_channel *primary = channel->primary_channel; int next_node; - struct cpumask available_mask; + cpumask_var_t available_mask; struct cpumask *alloced_mask; if ((vmbus_proto_version == VERSION_WS2008) || - (vmbus_proto_version == VERSION_WIN7) || (!perf_chn)) { + (vmbus_proto_version == VERSION_WIN7) || (!perf_chn) || + !alloc_cpumask_var(&available_mask, GFP_KERNEL)) { /* * Prior to win8, all channel interrupts are * delivered on cpu 0. * Also if the channel is not a performance critical * channel, bind it to cpu 0. + * In case alloc_cpumask_var() fails, bind it to cpu 0. */ channel->numa_node = 0; channel->target_cpu = 0; @@ -653,7 +655,7 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type) cpumask_clear(alloced_mask); } - cpumask_xor(&available_mask, alloced_mask, + cpumask_xor(available_mask, alloced_mask, cpumask_of_node(primary->numa_node)); cur_cpu = -1; @@ -671,10 +673,10 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type) } while (true) { - cur_cpu = cpumask_next(cur_cpu, &available_mask); + cur_cpu = cpumask_next(cur_cpu, available_mask); if (cur_cpu >= nr_cpu_ids) { cur_cpu = -1; - cpumask_copy(&available_mask, + cpumask_copy(available_mask, cpumask_of_node(primary->numa_node)); continue; } @@ -704,6 +706,8 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type) channel->target_cpu = cur_cpu; channel->target_vp = hv_cpu_number_to_vp_number(cur_cpu); + + free_cpumask_var(available_mask); } static void vmbus_wait_for_unload(void) |