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driver core: fw_devlink: Add support for batching fwnode parsing

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The amount of time spent parsing fwnodes of devices can become really
high if the devices are added in an non-ideal order. Worst case can be
O(N^2) when N devices are added. But this can be optimized to O(N) by
adding all the devices and then parsing all their fwnodes in one batch.

This commit adds fw_devlink_pause() and fw_devlink_resume() to allow
doing this.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200515053500.215929-4-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Saravana Kannan
2020-05-14 22:34:59 -07:00
committed by Greg Kroah-Hartman
parent 5f5377eadd
commit 716a7a2596
4 changed files with 120 additions and 7 deletions
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2
include/linux/fwnode.h
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@@ -171,5 +171,7 @@ struct fwnode_operations {
#define get_dev_from_fwnode(fwnode) get_device((fwnode)->dev)
extern u32 fw_devlink_get_flags(void);
void fw_devlink_pause(void);
void fw_devlink_resume(void);
#endif