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authorVlad Buslov <vladbu@mellanox.com>2018-07-05 17:24:32 +0300
committerDavid S. Miller <davem@davemloft.net>2018-07-08 06:42:29 +0300
commit0190c1d452a91c38a3462abdd81752be1b9006a8 (patch)
tree861605e9fbe0db5ba1ef8a518cc0bca96d04f4fb /drivers/pinctrl/uniphier
parentcae422f379f37fe9105d2a113259788f989e7df5 (diff)
downloadlinux-0190c1d452a91c38a3462abdd81752be1b9006a8.tar.xz
net: sched: atomically check-allocate action
Implement function that atomically checks if action exists and either takes reference to it, or allocates idr slot for action index to prevent concurrent allocations of actions with same index. Use EBUSY error pointer to indicate that idr slot is reserved. Implement cleanup helper function that removes temporary error pointer from idr. (in case of error between idr allocation and insertion of newly created action to specified index) Refactor all action init functions to insert new action to idr using this API. Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/pinctrl/uniphier')
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