Loading Documentation/ABI/testing/sysfs-class-usb_host→Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc +2 −2 Original line number Diff line number Diff line What: /sys/class/usb_host/usb_hostN/wusb_chid What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_chid Date: July 2008 KernelVersion: 2.6.27 Contact: David Vrabel <david.vrabel@csr.com> Loading @@ -9,7 +9,7 @@ Description: Set an all zero CHID to stop the host controller. What: /sys/class/usb_host/usb_hostN/wusb_trust_timeout What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_trust_timeout Date: July 2008 KernelVersion: 2.6.27 Contact: David Vrabel <david.vrabel@csr.com> Loading Documentation/ABI/testing/sysfs-devices-cache_disabledeleted 100644 → 0 +0 −18 Original line number Diff line number Diff line What: /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X Date: August 2008 KernelVersion: 2.6.27 Contact: mark.langsdorf@amd.com Description: These files exist in every cpu's cache index directories. There are currently 2 cache_disable_# files in each directory. Reading from these files on a supported processor will return that cache disable index value for that processor and node. Writing to one of these files will cause the specificed cache index to be disabled. Currently, only AMD Family 10h Processors support cache index disable, and only for their L3 caches. See the BIOS and Kernel Developer's Guide at http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116-Public-GH-BKDG_3.20_2-4-09.pdf for formatting information and other details on the cache index disable. Users: joachim.deguara@amd.com Documentation/ABI/testing/sysfs-devices-system-cpu 0 → 100644 +156 −0 Original line number Diff line number Diff line What: /sys/devices/system/cpu/ Date: pre-git history Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: A collection of both global and individual CPU attributes Individual CPU attributes are contained in subdirectories named by the kernel's logical CPU number, e.g.: /sys/devices/system/cpu/cpu#/ What: /sys/devices/system/cpu/sched_mc_power_savings /sys/devices/system/cpu/sched_smt_power_savings Date: June 2006 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: Discover and adjust the kernel's multi-core scheduler support. Possible values are: 0 - No power saving load balance (default value) 1 - Fill one thread/core/package first for long running threads 2 - Also bias task wakeups to semi-idle cpu package for power savings sched_mc_power_savings is dependent upon SCHED_MC, which is itself architecture dependent. sched_smt_power_savings is dependent upon SCHED_SMT, which is itself architecture dependent. The two files are independent of each other. It is possible that one file may be present without the other. Introduced by git commit 5c45bf27. What: /sys/devices/system/cpu/kernel_max /sys/devices/system/cpu/offline /sys/devices/system/cpu/online /sys/devices/system/cpu/possible /sys/devices/system/cpu/present Date: December 2008 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: CPU topology files that describe kernel limits related to hotplug. Briefly: kernel_max: the maximum cpu index allowed by the kernel configuration. offline: cpus that are not online because they have been HOTPLUGGED off or exceed the limit of cpus allowed by the kernel configuration (kernel_max above). online: cpus that are online and being scheduled. possible: cpus that have been allocated resources and can be brought online if they are present. present: cpus that have been identified as being present in the system. See Documentation/cputopology.txt for more information. What: /sys/devices/system/cpu/cpu#/node Date: October 2009 Contact: Linux memory management mailing list <linux-mm@kvack.org> Description: Discover NUMA node a CPU belongs to When CONFIG_NUMA is enabled, a symbolic link that points to the corresponding NUMA node directory. For example, the following symlink is created for cpu42 in NUMA node 2: /sys/devices/system/cpu/cpu42/node2 -> ../../node/node2 What: /sys/devices/system/cpu/cpu#/topology/core_id /sys/devices/system/cpu/cpu#/topology/core_siblings /sys/devices/system/cpu/cpu#/topology/core_siblings_list /sys/devices/system/cpu/cpu#/topology/physical_package_id /sys/devices/system/cpu/cpu#/topology/thread_siblings /sys/devices/system/cpu/cpu#/topology/thread_siblings_list Date: December 2008 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: CPU topology files that describe a logical CPU's relationship to other cores and threads in the same physical package. One cpu# directory is created per logical CPU in the system, e.g. /sys/devices/system/cpu/cpu42/. Briefly, the files above are: core_id: the CPU core ID of cpu#. Typically it is the hardware platform's identifier (rather than the kernel's). The actual value is architecture and platform dependent. core_siblings: internal kernel map of cpu#'s hardware threads within the same physical_package_id. core_siblings_list: human-readable list of the logical CPU numbers within the same physical_package_id as cpu#. physical_package_id: physical package id of cpu#. Typically corresponds to a physical socket number, but the actual value is architecture and platform dependent. thread_siblings: internel kernel map of cpu#'s hardware threads within the same core as cpu# thread_siblings_list: human-readable list of cpu#'s hardware threads within the same core as cpu# See Documentation/cputopology.txt for more information. What: /sys/devices/system/cpu/cpuidle/current_driver /sys/devices/system/cpu/cpuidle/current_governer_ro Date: September 2007 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: Discover cpuidle policy and mechanism Various CPUs today support multiple idle levels that are differentiated by varying exit latencies and power consumption during idle. Idle policy (governor) is differentiated from idle mechanism (driver) current_driver: displays current idle mechanism current_governor_ro: displays current idle policy See files in Documentation/cpuidle/ for more information. What: /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X Date: August 2008 KernelVersion: 2.6.27 Contact: mark.langsdorf@amd.com Description: These files exist in every cpu's cache index directories. There are currently 2 cache_disable_# files in each directory. Reading from these files on a supported processor will return that cache disable index value for that processor and node. Writing to one of these files will cause the specificed cache index to be disabled. Currently, only AMD Family 10h Processors support cache index disable, and only for their L3 caches. See the BIOS and Kernel Developer's Guide at http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116-Public-GH-BKDG_3.20_2-4-09.pdf for formatting information and other details on the cache index disable. Users: joachim.deguara@amd.com Documentation/cputopology.txt +30 −17 Original line number Diff line number Diff line Export cpu topology info via sysfs. Items (attributes) are similar Export CPU topology info via sysfs. Items (attributes) are similar to /proc/cpuinfo. 1) /sys/devices/system/cpu/cpuX/topology/physical_package_id: represent the physical package id of cpu X; physical package id of cpuX. Typically corresponds to a physical socket number, but the actual value is architecture and platform dependent. 2) /sys/devices/system/cpu/cpuX/topology/core_id: represent the cpu core id to cpu X; the CPU core ID of cpuX. Typically it is the hardware platform's identifier (rather than the kernel's). The actual value is architecture and platform dependent. 3) /sys/devices/system/cpu/cpuX/topology/thread_siblings: represent the thread siblings to cpu X in the same core; internel kernel map of cpuX's hardware threads within the same core as cpuX 4) /sys/devices/system/cpu/cpuX/topology/core_siblings: represent the thread siblings to cpu X in the same physical package; internal kernel map of cpuX's hardware threads within the same physical_package_id. To implement it in an architecture-neutral way, a new source file, drivers/base/topology.c, is to export the 4 attributes. Loading @@ -32,32 +45,32 @@ not defined by include/asm-XXX/topology.h: 3) thread_siblings: just the given CPU 4) core_siblings: just the given CPU Additionally, cpu topology information is provided under Additionally, CPU topology information is provided under /sys/devices/system/cpu and includes these files. The internal source for the output is in brackets ("[]"). kernel_max: the maximum cpu index allowed by the kernel configuration. kernel_max: the maximum CPU index allowed by the kernel configuration. [NR_CPUS-1] offline: cpus that are not online because they have been offline: CPUs that are not online because they have been HOTPLUGGED off (see cpu-hotplug.txt) or exceed the limit of cpus allowed by the kernel configuration (kernel_max of CPUs allowed by the kernel configuration (kernel_max above). [~cpu_online_mask + cpus >= NR_CPUS] online: cpus that are online and being scheduled [cpu_online_mask] online: CPUs that are online and being scheduled [cpu_online_mask] possible: cpus that have been allocated resources and can be possible: CPUs that have been allocated resources and can be brought online if they are present. [cpu_possible_mask] present: cpus that have been identified as being present in the present: CPUs that have been identified as being present in the system. [cpu_present_mask] The format for the above output is compatible with cpulist_parse() [see <linux/cpumask.h>]. Some examples follow. In this example, there are 64 cpus in the system but cpus 32-63 exceed In this example, there are 64 CPUs in the system but cpus 32-63 exceed the kernel max which is limited to 0..31 by the NR_CPUS config option being 32. Note also that cpus 2 and 4-31 are not online but could be being 32. Note also that CPUs 2 and 4-31 are not online but could be brought online as they are both present and possible. kernel_max: 31 Loading @@ -67,8 +80,8 @@ brought online as they are both present and possible. present: 0-31 In this example, the NR_CPUS config option is 128, but the kernel was started with possible_cpus=144. There are 4 cpus in the system and cpu2 was manually taken offline (and is the only cpu that can be brought started with possible_cpus=144. There are 4 CPUs in the system and cpu2 was manually taken offline (and is the only CPU that can be brought online.) kernel_max: 127 Loading @@ -78,4 +91,4 @@ online.) present: 0-3 See cpu-hotplug.txt for the possible_cpus=NUM kernel start parameter as well as more information on the various cpumask's. as well as more information on the various cpumasks. Documentation/debugging-via-ohci1394.txt +4 −4 Original line number Diff line number Diff line Loading @@ -64,14 +64,14 @@ be used to view the printk buffer of a remote machine, even with live update. Bernhard Kaindl enhanced firescope to support accessing 64-bit machines from 32-bit firescope and vice versa: - ftp://ftp.suse.de/private/bk/firewire/tools/firescope-0.2.2.tar.bz2 - http://halobates.de/firewire/firescope-0.2.2.tar.bz2 and he implemented fast system dump (alpha version - read README.txt): - ftp://ftp.suse.de/private/bk/firewire/tools/firedump-0.1.tar.bz2 - http://halobates.de/firewire/firedump-0.1.tar.bz2 There is also a gdb proxy for firewire which allows to use gdb to access data which can be referenced from symbols found by gdb in vmlinux: - ftp://ftp.suse.de/private/bk/firewire/tools/fireproxy-0.33.tar.bz2 - http://halobates.de/firewire/fireproxy-0.33.tar.bz2 The latest version of this gdb proxy (fireproxy-0.34) can communicate (not yet stable) with kgdb over an memory-based communication module (kgdbom). Loading Loading @@ -178,7 +178,7 @@ Step-by-step instructions for using firescope with early OHCI initialization: Notes ----- Documentation and specifications: ftp://ftp.suse.de/private/bk/firewire/docs Documentation and specifications: http://halobates.de/firewire/ FireWire is a trademark of Apple Inc. - for more information please refer to: http://en.wikipedia.org/wiki/FireWire Loading
Documentation/ABI/testing/sysfs-class-usb_host→Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc +2 −2 Original line number Diff line number Diff line What: /sys/class/usb_host/usb_hostN/wusb_chid What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_chid Date: July 2008 KernelVersion: 2.6.27 Contact: David Vrabel <david.vrabel@csr.com> Loading @@ -9,7 +9,7 @@ Description: Set an all zero CHID to stop the host controller. What: /sys/class/usb_host/usb_hostN/wusb_trust_timeout What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_trust_timeout Date: July 2008 KernelVersion: 2.6.27 Contact: David Vrabel <david.vrabel@csr.com> Loading
Documentation/ABI/testing/sysfs-devices-cache_disabledeleted 100644 → 0 +0 −18 Original line number Diff line number Diff line What: /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X Date: August 2008 KernelVersion: 2.6.27 Contact: mark.langsdorf@amd.com Description: These files exist in every cpu's cache index directories. There are currently 2 cache_disable_# files in each directory. Reading from these files on a supported processor will return that cache disable index value for that processor and node. Writing to one of these files will cause the specificed cache index to be disabled. Currently, only AMD Family 10h Processors support cache index disable, and only for their L3 caches. See the BIOS and Kernel Developer's Guide at http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116-Public-GH-BKDG_3.20_2-4-09.pdf for formatting information and other details on the cache index disable. Users: joachim.deguara@amd.com
Documentation/ABI/testing/sysfs-devices-system-cpu 0 → 100644 +156 −0 Original line number Diff line number Diff line What: /sys/devices/system/cpu/ Date: pre-git history Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: A collection of both global and individual CPU attributes Individual CPU attributes are contained in subdirectories named by the kernel's logical CPU number, e.g.: /sys/devices/system/cpu/cpu#/ What: /sys/devices/system/cpu/sched_mc_power_savings /sys/devices/system/cpu/sched_smt_power_savings Date: June 2006 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: Discover and adjust the kernel's multi-core scheduler support. Possible values are: 0 - No power saving load balance (default value) 1 - Fill one thread/core/package first for long running threads 2 - Also bias task wakeups to semi-idle cpu package for power savings sched_mc_power_savings is dependent upon SCHED_MC, which is itself architecture dependent. sched_smt_power_savings is dependent upon SCHED_SMT, which is itself architecture dependent. The two files are independent of each other. It is possible that one file may be present without the other. Introduced by git commit 5c45bf27. What: /sys/devices/system/cpu/kernel_max /sys/devices/system/cpu/offline /sys/devices/system/cpu/online /sys/devices/system/cpu/possible /sys/devices/system/cpu/present Date: December 2008 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: CPU topology files that describe kernel limits related to hotplug. Briefly: kernel_max: the maximum cpu index allowed by the kernel configuration. offline: cpus that are not online because they have been HOTPLUGGED off or exceed the limit of cpus allowed by the kernel configuration (kernel_max above). online: cpus that are online and being scheduled. possible: cpus that have been allocated resources and can be brought online if they are present. present: cpus that have been identified as being present in the system. See Documentation/cputopology.txt for more information. What: /sys/devices/system/cpu/cpu#/node Date: October 2009 Contact: Linux memory management mailing list <linux-mm@kvack.org> Description: Discover NUMA node a CPU belongs to When CONFIG_NUMA is enabled, a symbolic link that points to the corresponding NUMA node directory. For example, the following symlink is created for cpu42 in NUMA node 2: /sys/devices/system/cpu/cpu42/node2 -> ../../node/node2 What: /sys/devices/system/cpu/cpu#/topology/core_id /sys/devices/system/cpu/cpu#/topology/core_siblings /sys/devices/system/cpu/cpu#/topology/core_siblings_list /sys/devices/system/cpu/cpu#/topology/physical_package_id /sys/devices/system/cpu/cpu#/topology/thread_siblings /sys/devices/system/cpu/cpu#/topology/thread_siblings_list Date: December 2008 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: CPU topology files that describe a logical CPU's relationship to other cores and threads in the same physical package. One cpu# directory is created per logical CPU in the system, e.g. /sys/devices/system/cpu/cpu42/. Briefly, the files above are: core_id: the CPU core ID of cpu#. Typically it is the hardware platform's identifier (rather than the kernel's). The actual value is architecture and platform dependent. core_siblings: internal kernel map of cpu#'s hardware threads within the same physical_package_id. core_siblings_list: human-readable list of the logical CPU numbers within the same physical_package_id as cpu#. physical_package_id: physical package id of cpu#. Typically corresponds to a physical socket number, but the actual value is architecture and platform dependent. thread_siblings: internel kernel map of cpu#'s hardware threads within the same core as cpu# thread_siblings_list: human-readable list of cpu#'s hardware threads within the same core as cpu# See Documentation/cputopology.txt for more information. What: /sys/devices/system/cpu/cpuidle/current_driver /sys/devices/system/cpu/cpuidle/current_governer_ro Date: September 2007 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> Description: Discover cpuidle policy and mechanism Various CPUs today support multiple idle levels that are differentiated by varying exit latencies and power consumption during idle. Idle policy (governor) is differentiated from idle mechanism (driver) current_driver: displays current idle mechanism current_governor_ro: displays current idle policy See files in Documentation/cpuidle/ for more information. What: /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X Date: August 2008 KernelVersion: 2.6.27 Contact: mark.langsdorf@amd.com Description: These files exist in every cpu's cache index directories. There are currently 2 cache_disable_# files in each directory. Reading from these files on a supported processor will return that cache disable index value for that processor and node. Writing to one of these files will cause the specificed cache index to be disabled. Currently, only AMD Family 10h Processors support cache index disable, and only for their L3 caches. See the BIOS and Kernel Developer's Guide at http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116-Public-GH-BKDG_3.20_2-4-09.pdf for formatting information and other details on the cache index disable. Users: joachim.deguara@amd.com
Documentation/cputopology.txt +30 −17 Original line number Diff line number Diff line Export cpu topology info via sysfs. Items (attributes) are similar Export CPU topology info via sysfs. Items (attributes) are similar to /proc/cpuinfo. 1) /sys/devices/system/cpu/cpuX/topology/physical_package_id: represent the physical package id of cpu X; physical package id of cpuX. Typically corresponds to a physical socket number, but the actual value is architecture and platform dependent. 2) /sys/devices/system/cpu/cpuX/topology/core_id: represent the cpu core id to cpu X; the CPU core ID of cpuX. Typically it is the hardware platform's identifier (rather than the kernel's). The actual value is architecture and platform dependent. 3) /sys/devices/system/cpu/cpuX/topology/thread_siblings: represent the thread siblings to cpu X in the same core; internel kernel map of cpuX's hardware threads within the same core as cpuX 4) /sys/devices/system/cpu/cpuX/topology/core_siblings: represent the thread siblings to cpu X in the same physical package; internal kernel map of cpuX's hardware threads within the same physical_package_id. To implement it in an architecture-neutral way, a new source file, drivers/base/topology.c, is to export the 4 attributes. Loading @@ -32,32 +45,32 @@ not defined by include/asm-XXX/topology.h: 3) thread_siblings: just the given CPU 4) core_siblings: just the given CPU Additionally, cpu topology information is provided under Additionally, CPU topology information is provided under /sys/devices/system/cpu and includes these files. The internal source for the output is in brackets ("[]"). kernel_max: the maximum cpu index allowed by the kernel configuration. kernel_max: the maximum CPU index allowed by the kernel configuration. [NR_CPUS-1] offline: cpus that are not online because they have been offline: CPUs that are not online because they have been HOTPLUGGED off (see cpu-hotplug.txt) or exceed the limit of cpus allowed by the kernel configuration (kernel_max of CPUs allowed by the kernel configuration (kernel_max above). [~cpu_online_mask + cpus >= NR_CPUS] online: cpus that are online and being scheduled [cpu_online_mask] online: CPUs that are online and being scheduled [cpu_online_mask] possible: cpus that have been allocated resources and can be possible: CPUs that have been allocated resources and can be brought online if they are present. [cpu_possible_mask] present: cpus that have been identified as being present in the present: CPUs that have been identified as being present in the system. [cpu_present_mask] The format for the above output is compatible with cpulist_parse() [see <linux/cpumask.h>]. Some examples follow. In this example, there are 64 cpus in the system but cpus 32-63 exceed In this example, there are 64 CPUs in the system but cpus 32-63 exceed the kernel max which is limited to 0..31 by the NR_CPUS config option being 32. Note also that cpus 2 and 4-31 are not online but could be being 32. Note also that CPUs 2 and 4-31 are not online but could be brought online as they are both present and possible. kernel_max: 31 Loading @@ -67,8 +80,8 @@ brought online as they are both present and possible. present: 0-31 In this example, the NR_CPUS config option is 128, but the kernel was started with possible_cpus=144. There are 4 cpus in the system and cpu2 was manually taken offline (and is the only cpu that can be brought started with possible_cpus=144. There are 4 CPUs in the system and cpu2 was manually taken offline (and is the only CPU that can be brought online.) kernel_max: 127 Loading @@ -78,4 +91,4 @@ online.) present: 0-3 See cpu-hotplug.txt for the possible_cpus=NUM kernel start parameter as well as more information on the various cpumask's. as well as more information on the various cpumasks.
Documentation/debugging-via-ohci1394.txt +4 −4 Original line number Diff line number Diff line Loading @@ -64,14 +64,14 @@ be used to view the printk buffer of a remote machine, even with live update. Bernhard Kaindl enhanced firescope to support accessing 64-bit machines from 32-bit firescope and vice versa: - ftp://ftp.suse.de/private/bk/firewire/tools/firescope-0.2.2.tar.bz2 - http://halobates.de/firewire/firescope-0.2.2.tar.bz2 and he implemented fast system dump (alpha version - read README.txt): - ftp://ftp.suse.de/private/bk/firewire/tools/firedump-0.1.tar.bz2 - http://halobates.de/firewire/firedump-0.1.tar.bz2 There is also a gdb proxy for firewire which allows to use gdb to access data which can be referenced from symbols found by gdb in vmlinux: - ftp://ftp.suse.de/private/bk/firewire/tools/fireproxy-0.33.tar.bz2 - http://halobates.de/firewire/fireproxy-0.33.tar.bz2 The latest version of this gdb proxy (fireproxy-0.34) can communicate (not yet stable) with kgdb over an memory-based communication module (kgdbom). Loading Loading @@ -178,7 +178,7 @@ Step-by-step instructions for using firescope with early OHCI initialization: Notes ----- Documentation and specifications: ftp://ftp.suse.de/private/bk/firewire/docs Documentation and specifications: http://halobates.de/firewire/ FireWire is a trademark of Apple Inc. - for more information please refer to: http://en.wikipedia.org/wiki/FireWire
