/* * Copyright (C) ST-Ericsson AB 2010 * Author: Sjur Brendeland * License terms: GNU General Public License (GPL) version 2 */ #ifndef CFCNFG_H_ #define CFCNFG_H_ #include #include #include #include struct cfcnfg; /** * enum cfcnfg_phy_preference - Physical preference HW Abstraction * * @CFPHYPREF_UNSPECIFIED: Default physical interface * * @CFPHYPREF_LOW_LAT: Default physical interface for low-latency * traffic * @CFPHYPREF_HIGH_BW: Default physical interface for high-bandwidth * traffic * @CFPHYPREF_LOOP: TEST only Loopback interface simulating modem * responses. * */ enum cfcnfg_phy_preference { CFPHYPREF_UNSPECIFIED, CFPHYPREF_LOW_LAT, CFPHYPREF_HIGH_BW, CFPHYPREF_LOOP }; /** * cfcnfg_create() - Get the CAIF configuration object given network. * @net: Network for the CAIF configuration object. */ struct cfcnfg *get_cfcnfg(struct net *net); /** * cfcnfg_create() - Create the CAIF configuration object. */ struct cfcnfg *cfcnfg_create(void); /** * cfcnfg_remove() - Remove the CFCNFG object * @cfg: config object */ void cfcnfg_remove(struct cfcnfg *cfg); /** * cfcnfg_add_phy_layer() - Adds a physical layer to the CAIF stack. * @cnfg: Pointer to a CAIF configuration object, created by * cfcnfg_create(). * @dev: Pointer to link layer device * @phy_layer: Specify the physical layer. The transmit function * MUST be set in the structure. * @pref: The phy (link layer) preference. * @link_support: Protocol implementation for link layer specific protocol. * @fcs: Specify if checksum is used in CAIF Framing Layer. * @head_room: Head space needed by link specific protocol. */ void cfcnfg_add_phy_layer(struct cfcnfg *cnfg, struct net_device *dev, struct cflayer *phy_layer, enum cfcnfg_phy_preference pref, struct cflayer *link_support, bool fcs, int head_room); /** * cfcnfg_del_phy_layer - Deletes an phy layer from the CAIF stack. * * @cnfg: Pointer to a CAIF configuration object, created by * cfcnfg_create(). * @phy_layer: Adaptation layer to be removed. */ int cfcnfg_del_phy_layer(struct cfcnfg *cnfg, struct cflayer *phy_layer); /** * cfcnfg_set_phy_state() - Set the state of the physical interface device. * @cnfg: Configuration object * @phy_layer: Physical Layer representation * @up: State of device */ int cfcnfg_set_phy_state(struct cfcnfg *cnfg, struct cflayer *phy_layer, bool up); #endif /* CFCNFG_H_ */ '>author
path: root/tools/perf/Documentation/intel-bts.txt
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authorThomas Gleixner <tglx@linutronix.de>2017-01-10 14:01:05 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-16 13:20:05 +0100
commit4205e4786d0b9fc3b4fec7b1910cf645a0468307 (patch)
tree685ccb486409197b936c785eb9d173c3edff45a1 /tools/perf/Documentation/intel-bts.txt
parent7e164ce4e8ecd7e9a58a83750bd3ee03125df154 (diff)
cpu/hotplug: Provide dynamic range for prepare stage
Mathieu reported that the LTTNG modules are broken as of 4.10-rc1 due to the removal of the cpu hotplug notifiers. Usually I don't care much about out of tree modules, but LTTNG is widely used in distros. There are two ways to solve that: 1) Reserve a hotplug state for LTTNG 2) Add a dynamic range for the prepare states. While #1 is the simplest solution, #2 is the proper one as we can convert in tree users, which do not care about ordering, to the dynamic range as well. Add a dynamic range which allows LTTNG to request states in the prepare stage. Reported-and-tested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Sewior <bigeasy@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701101353010.3401@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'tools/perf/Documentation/intel-bts.txt')