scsi: storvsc: Re-init stor_chns when a channel interrupt is re-assigned

For each storvsc_device, storvsc keeps track of the channel target CPUs associated to the device (alloced_cpus) and it uses this information to fill a "cache" (stor_chns) mapping CPU->channel according to a certain heuristic. Update the alloced_cpus mask and the stor_chns array when a channel of the storvsc device is re-assigned to a different CPU.

Andrea Parri (Microsoft) committed 6 years ago

Commit 7769e181 parent 75278103 files · +95 −8Browse files

Showing the changes to include/linux (1 of 3 files). Show all

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include/linux/hyperv.h+3−0

@@ -773,6 +773,9 @@ struct vmbus_channel { · 772 unmodified lines
773	void (onchannel_callback)(void context);	773	void (onchannel_callback)(void context);
774	void *channel_callback_context;	774	void *channel_callback_context;
775		775
		776	void (change_target_cpu_callback)(struct vmbus_channel channel,
		777	u32 old, u32 new);
		778
776	/*	779	/*
777	* Synchronize channel scheduling and channel removal; see the inline	780	* Synchronize channel scheduling and channel removal; see the inline
778	* comments in vmbus_chan_sched() and vmbus_reset_channel_cb().	781	* comments in vmbus_chan_sched() and vmbus_reset_channel_cb().