thermal: netlink: Add thermal_group_has_listeners() helper

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Add a helper function to check if there are listeners for
thermal_gnl_family multicast groups.

For now use it to avoid unnecessary allocations and sending
thermal genl messages when there are no recipients.

In the future, in conjunction with (not yet implemented) notification
of change in the netlink socket group membership, this helper can be
used to open/close hardware interfaces based on the presence of
user space subscribers.

Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Stanislaw Gruszka 2023-12-28 11:02:48 +01:00 • committed by Rafael J. Wysocki

parent 5eb4f413ad

commit 04c3b03044

1 changed files with 11 additions and 0 deletions

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drivers/thermal/thermal_netlink.c

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