Norman Feske 1f4f119b1e Capability quota accounting and trading ... This patch mirrors the accounting and trading scheme that Genode employs for physical memory to the accounting of capability allocations. Capability quotas must now be explicitly assigned to subsystems by specifying a 'caps=<amount>' attribute to init's start nodes. Analogously to RAM quotas, cap quotas can be traded between clients and servers as part of the session protocol. The capability budget of each component is maintained by the component's corresponding PD session at core. At the current stage, the accounting is applied to RPC capabilities, signal-context capabilities, and dataspace capabilities. Capabilities that are dynamically allocated via core's CPU and TRACE service are not yet covered. Also, the capabilities allocated by resource multiplexers outside of core (like nitpicker) must be accounted by the respective servers, which is not covered yet. If a component runs out of capabilities, core's PD service prints a warning to the log. To observe the consumption of capabilities per component in detail, the PD service is equipped with a diagnostic mode, which can be enabled via the 'diag' attribute in the target node of init's routing rules. E.g., the following route enables the diagnostic mode for the PD session of the "timer" component: <default-route> <service name="PD" unscoped_label="timer"> <parent diag="yes"/> </service> ... </default-route> For subsystems based on a sub-init instance, init can be configured to report the capability-quota information of its subsystems by adding the attribute 'child_caps="yes"' to init's '<report>' config node. Init's own capability quota can be reported by adding the attribute 'init_caps="yes"'. Fixes #2398		2017-05-31 13:16:06 +02:00
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client.h	Adjust file headers to refer to the AGPLv3	2017-02-28 12:59:29 +01:00
nova_native_pd.h	Capability quota accounting and trading	2017-05-31 13:16:06 +02:00