Hi All,
f-series CKRM went thru a major overhaul, mainly to reduce the codesize
and make it easy to understand.
As usual, I uploaded the patches to the project website in two formats.
External visible changes are:
For user:
guarantee, limit, total_guarantee and max_limit are replaced by
min_shares - same usage as guarantee
max_shares - same usage as limit
child_shares_divisor - replaces both total_guarantee and max_limit
config file is removed, instead we are now using module parameters
changeable through /sys/module/
attribute file is removed.
For Resource controller writers:
all the interfaces between core and controller now use a shares
data structures (instead of a void *). See the usage in numtasks
controller.
config file is removed. See usage of module parameters in numtasks
controller.
When shares are changed by the user, the controller now only get
notified after the fields of the shares struture is changed.
When allocing and returning the shares structure, controller can
set specific field of the shares structure to be UNSUPPORTED, and
users will not be able to change that parameter(for ex: max_shares)
Patch descriptions:
01/12 - ckrm_core
This patch defines data structures for defining a class and resource
controller.
Provides register/unregister functions for a controller.
Provides utility functions to get a controller's data structure.
02/12 - ckrm_core_class_support
Provides functions to alloc and free a user defined class.
Provides utility macro to walk through the class hierarchy
03/12 - ckrm_core_handle_shares
Provides functions to set/get shares of a specific resource of a class
Defines a teardown function that is intended to be called when user
disables CKRM (by umount of RCFS)
04/12 - ckrm_tasksupport
Adds logic to support adding/removing task to/from a class
Provides interface to set a task's class
05/12 - ckrm_tasksupport_fork_exit_init
Initializes and clears ckrm specific information in a task at fork()
and exit().
Inititalizes ckrm (called from start_kernel)
06/12: ckrm_tasksupport_procsupport
Adds an interface in /proc to get the class name of a task.
07/12 - ckrm_configfs_rcfs
Create the filesystem(RCFS) for managing CKRM. Hooks up with configfs.
Provides functions for creating and deleting classes.
08/12 - ckrm_configfs_rcfs_attr_support
Adds the basic attribute store and show functions.
09/12 - 04ckrm_configfs_rcfs_stats
Adds attr_store and attr_show support for stats file.
10/12 - ckrm_configfs_rcfs_shares
Adds attr_store and attr_show support for shares file.
11/12 - ckrm_configfs_rcfs_members
Adds attr_store and attr_show support for members file.
12/12 - ckrm_docs
Documentation describing important CKRM elements such as classes,
shares, controllers, and the interface provided to userspace via RCFS
--
----------------------------------------------------------------------
Chandra Seetharaman | Be careful what you choose....
- [EMAIL PROTECTED] | .......you may get it.
----------------------------------------------------------------------
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