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Drivers: hv: vmbus: Remove the unused HV_LOCALIZED channel affinity logic

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The logic is unused since commit 509879bdb3 ("Drivers: hv: Introduce
a policy for controlling channel affinity").

This logic assumes that a channel target_cpu doesn't change during the
lifetime of a channel, but this assumption is incompatible with the new
functionality that allows changing the vCPU a channel will interrupt.

Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20200406001514.19876-9-parri.andrea@gmail.com
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Andrea Parri (Microsoft)
2020-04-06 02:15:11 +02:00
committed by Wei Liu
parent 240ad77cb5
commit 8ef4c4abbb
2 changed files with 26 additions and 108 deletions
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27
include/linux/hyperv.h
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@@ -689,11 +689,6 @@ union hv_connection_id {
} u;
};
enum hv_numa_policy {
HV_BALANCED = 0,
HV_LOCALIZED,
};
enum vmbus_device_type {
HV_IDE = 0,
HV_SCSI,
@@ -808,10 +803,6 @@ struct vmbus_channel {
u32 target_vp;
/* The corresponding CPUID in the guest */
u32 target_cpu;
/*
* State to manage the CPU affiliation of channels.
*/
struct cpumask alloced_cpus_in_node;
int numa_node;
/*
* Support for sub-channels. For high performance devices,
@@ -898,18 +889,6 @@ struct vmbus_channel {
*/
bool low_latency;
/*
* NUMA distribution policy:
* We support two policies:
* 1) Balanced: Here all performance critical channels are
* distributed evenly amongst all the NUMA nodes.
* This policy will be the default policy.
* 2) Localized: All channels of a given instance of a
* performance critical service will be assigned CPUs
* within a selected NUMA node.
*/
enum hv_numa_policy affinity_policy;
bool probe_done;
/*
@@ -965,12 +944,6 @@ static inline bool is_sub_channel(const struct vmbus_channel *c)
return c->offermsg.offer.sub_channel_index != 0;
}
static inline void set_channel_affinity_state(struct vmbus_channel *c,
enum hv_numa_policy policy)
{
c->affinity_policy = policy;
}
static inline void set_channel_read_mode(struct vmbus_channel *c,
enum hv_callback_mode mode)
{