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FROMGIT: of: platform: Batch fwnode parsing when adding all top level devices

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The fw_devlink_pause() and fw_devlink_resume() APIs allow batching the
parsing of the device tree nodes when a lot of devices are added. This
will significantly cut down parsing time (as much a 1 second on some
systems). So, use them when adding devices for all the top level device
tree nodes in a system.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200515053500.215929-5-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 93d2e4322aa74c1ad1e8c2160608eb9a960d69ff
 https: //git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-next)
Bug: 157691602
Signed-off-by: Saravana Kannan <saravanak@google.com>
Change-Id: I6cc5b4eff7f85b0eb3b6c1c4d81418544a17f532
This commit is contained in:
Saravana Kannan 2020-05-14 22:35:00 -07:00
parent 29698b3d2e
commit c75b271856
1 changed files with 2 additions and 0 deletions
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2
drivers/of/platform.c
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@ -545,7 +545,9 @@ static int __init of_platform_default_populate_init(void)
} }
/* Populate everything else. */ /* Populate everything else. */
fw_devlink_pause();
of_platform_default_populate(NULL, NULL, NULL); of_platform_default_populate(NULL, NULL, NULL);
fw_devlink_resume();
return 0; return 0;
} }