/********************************************************************* * * Filename: irias_object.h * Version: * Description: * Status: Experimental. * Author: Dag Brattli * Created at: Thu Oct 1 22:49:50 1998 * Modified at: Wed Dec 15 11:20:57 1999 * Modified by: Dag Brattli * * Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * ********************************************************************/ #ifndef LM_IAS_OBJECT_H #define LM_IAS_OBJECT_H #include #include /* LM-IAS Attribute types */ #define IAS_MISSING 0 #define IAS_INTEGER 1 #define IAS_OCT_SEQ 2 #define IAS_STRING 3 /* Object ownership of attributes (user or kernel) */ #define IAS_KERNEL_ATTR 0 #define IAS_USER_ATTR 1 /* * LM-IAS Object */ struct ias_object { irda_queue_t q; /* Must be first! */ magic_t magic; char *name; int id; hashbin_t *attribs; }; /* * Values used by LM-IAS attributes */ struct ias_value { __u8 type; /* Value description */ __u8 owner; /* Managed from user/kernel space */ int charset; /* Only used by string type */ int len; /* Value */ union { int integer; char *string; __u8 *oct_seq; } t; }; /* * Attributes used by LM-IAS objects */ struct ias_attrib { irda_queue_t q; /* Must be first! */ int magic; char *name; /* Attribute name */ struct ias_value *value; /* Attribute value */ }; struct ias_object *irias_new_object(char *name, int id); void irias_insert_object(struct ias_object *obj); int irias_delete_object(struct ias_object *obj); int irias_delete_attrib(struct ias_object *obj, struct ias_attrib *attrib, int cleanobject); void __irias_delete_object(struct ias_object *obj); void irias_add_integer_attrib(struct ias_object *obj, char *name, int value, int user); void irias_add_string_attrib(struct ias_object *obj, char *name, char *value, int user); void irias_add_octseq_attrib(struct ias_object *obj, char *name, __u8 *octets, int len, int user); int irias_object_change_attribute(char *obj_name, char *attrib_name, struct ias_value *new_value); struct ias_object *irias_find_object(char *name); struct ias_attrib *irias_find_attrib(struct ias_object *obj, char *name); struct ias_value *irias_new_string_value(char *string); struct ias_value *irias_new_integer_value(int integer); struct ias_value *irias_new_octseq_value(__u8 *octseq , int len); struct ias_value *irias_new_missing_value(void); void irias_delete_value(struct ias_value *value); extern struct ias_value irias_missing; extern hashbin_t *irias_objects; #endif e373e09fb16b83e8adf5c48c421a4ca76468'>lib
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /tools/power/cpupower/lib
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/power/cpupower/lib')