Loading .gitignore +1 −6 Original line number Diff line number Diff line Loading @@ -22,6 +22,7 @@ *.lst *.symtypes *.order modules.builtin *.elf *.bin *.gz Loading @@ -45,14 +46,8 @@ Module.symvers # # Generated include files # include/asm include/asm-*/asm-offsets.h include/config include/linux/autoconf.h include/linux/compile.h include/linux/version.h include/linux/utsrelease.h include/linux/bounds.h include/generated # stgit generated dirs Loading Documentation/cpu-hotplug.txt +17 −32 Original line number Diff line number Diff line Loading @@ -315,42 +315,27 @@ A: The following are what is required for CPU hotplug infrastructure to work Q: I need to ensure that a particular cpu is not removed when there is some work specific to this cpu is in progress. A: First switch the current thread context to preferred cpu A: There are two ways. If your code can be run in interrupt context, use smp_call_function_single(), otherwise use work_on_cpu(). Note that work_on_cpu() is slow, and can fail due to out of memory: int my_func_on_cpu(int cpu) { cpumask_t saved_mask, new_mask = CPU_MASK_NONE; int curr_cpu, err = 0; saved_mask = current->cpus_allowed; cpu_set(cpu, new_mask); err = set_cpus_allowed(current, new_mask); if (err) return err; /* * If we got scheduled out just after the return from * set_cpus_allowed() before running the work, this ensures * we stay locked. */ curr_cpu = get_cpu(); if (curr_cpu != cpu) { err = -EAGAIN; goto ret; } else { /* * Do work : But cant sleep, since get_cpu() disables preempt */ } ret: put_cpu(); set_cpus_allowed(current, saved_mask); int err; get_online_cpus(); if (!cpu_online(cpu)) err = -EINVAL; else #if NEEDS_BLOCKING err = work_on_cpu(cpu, __my_func_on_cpu, NULL); #else smp_call_function_single(cpu, __my_func_on_cpu, &err, true); #endif put_online_cpus(); return err; } Q: How do we determine how many CPUs are available for hotplug. A: There is no clear spec defined way from ACPI that can give us that information today. Based on some input from Natalie of Unisys, Loading Documentation/dontdiff +1 −0 Original line number Diff line number Diff line Loading @@ -103,6 +103,7 @@ gconf gen-devlist gen_crc32table gen_init_cpio generated genheaders genksyms *_gray256.c Loading Documentation/hwmon/k10temp 0 → 100644 +60 −0 Original line number Diff line number Diff line Kernel driver k10temp ===================== Supported chips: * AMD Family 10h processors: Socket F: Quad-Core/Six-Core/Embedded Opteron Socket AM2+: Opteron, Phenom (II) X3/X4 Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II Socket S1G3: Athlon II, Sempron, Turion II * AMD Family 11h processors: Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra) Prefix: 'k10temp' Addresses scanned: PCI space Datasheets: BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors: http://support.amd.com/us/Processor_TechDocs/31116.pdf BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors: http://support.amd.com/us/Processor_TechDocs/41256.pdf Revision Guide for AMD Family 10h Processors: http://support.amd.com/us/Processor_TechDocs/41322.pdf Revision Guide for AMD Family 11h Processors: http://support.amd.com/us/Processor_TechDocs/41788.pdf AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks: http://support.amd.com/us/Processor_TechDocs/43373.pdf AMD Family 10h Server and Workstation Processor Power and Thermal Data Sheet: http://support.amd.com/us/Processor_TechDocs/43374.pdf AMD Family 10h Desktop Processor Power and Thermal Data Sheet: http://support.amd.com/us/Processor_TechDocs/43375.pdf Author: Clemens Ladisch <clemens@ladisch.de> Description ----------- This driver permits reading of the internal temperature sensor of AMD Family 10h and 11h processors. All these processors have a sensor, but on older revisions of Family 10h processors, the sensor may return inconsistent values (erratum 319). The driver will refuse to load on these revisions unless you specify the "force=1" module parameter. There is one temperature measurement value, available as temp1_input in sysfs. It is measured in degrees Celsius with a resolution of 1/8th degree. Please note that it is defined as a relative value; to quote the AMD manual: Tctl is the processor temperature control value, used by the platform to control cooling systems. Tctl is a non-physical temperature on an arbitrary scale measured in degrees. It does _not_ represent an actual physical temperature like die or case temperature. Instead, it specifies the processor temperature relative to the point at which the system must supply the maximum cooling for the processor's specified maximum case temperature and maximum thermal power dissipation. The maximum value for Tctl is available in the file temp1_max. If the BIOS has enabled hardware temperature control, the threshold at which the processor will throttle itself to avoid damage is available in temp1_crit and temp1_crit_hyst. Documentation/kbuild/kbuild.txt +14 −0 Original line number Diff line number Diff line Output files modules.order -------------------------------------------------- This file records the order in which modules appear in Makefiles. This is used by modprobe to deterministically resolve aliases that match multiple modules. modules.builtin -------------------------------------------------- This file lists all modules that are built into the kernel. This is used by modprobe to not fail when trying to load something builtin. Environment variables KCPPFLAGS Loading Loading
.gitignore +1 −6 Original line number Diff line number Diff line Loading @@ -22,6 +22,7 @@ *.lst *.symtypes *.order modules.builtin *.elf *.bin *.gz Loading @@ -45,14 +46,8 @@ Module.symvers # # Generated include files # include/asm include/asm-*/asm-offsets.h include/config include/linux/autoconf.h include/linux/compile.h include/linux/version.h include/linux/utsrelease.h include/linux/bounds.h include/generated # stgit generated dirs Loading
Documentation/cpu-hotplug.txt +17 −32 Original line number Diff line number Diff line Loading @@ -315,42 +315,27 @@ A: The following are what is required for CPU hotplug infrastructure to work Q: I need to ensure that a particular cpu is not removed when there is some work specific to this cpu is in progress. A: First switch the current thread context to preferred cpu A: There are two ways. If your code can be run in interrupt context, use smp_call_function_single(), otherwise use work_on_cpu(). Note that work_on_cpu() is slow, and can fail due to out of memory: int my_func_on_cpu(int cpu) { cpumask_t saved_mask, new_mask = CPU_MASK_NONE; int curr_cpu, err = 0; saved_mask = current->cpus_allowed; cpu_set(cpu, new_mask); err = set_cpus_allowed(current, new_mask); if (err) return err; /* * If we got scheduled out just after the return from * set_cpus_allowed() before running the work, this ensures * we stay locked. */ curr_cpu = get_cpu(); if (curr_cpu != cpu) { err = -EAGAIN; goto ret; } else { /* * Do work : But cant sleep, since get_cpu() disables preempt */ } ret: put_cpu(); set_cpus_allowed(current, saved_mask); int err; get_online_cpus(); if (!cpu_online(cpu)) err = -EINVAL; else #if NEEDS_BLOCKING err = work_on_cpu(cpu, __my_func_on_cpu, NULL); #else smp_call_function_single(cpu, __my_func_on_cpu, &err, true); #endif put_online_cpus(); return err; } Q: How do we determine how many CPUs are available for hotplug. A: There is no clear spec defined way from ACPI that can give us that information today. Based on some input from Natalie of Unisys, Loading
Documentation/dontdiff +1 −0 Original line number Diff line number Diff line Loading @@ -103,6 +103,7 @@ gconf gen-devlist gen_crc32table gen_init_cpio generated genheaders genksyms *_gray256.c Loading
Documentation/hwmon/k10temp 0 → 100644 +60 −0 Original line number Diff line number Diff line Kernel driver k10temp ===================== Supported chips: * AMD Family 10h processors: Socket F: Quad-Core/Six-Core/Embedded Opteron Socket AM2+: Opteron, Phenom (II) X3/X4 Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II Socket S1G3: Athlon II, Sempron, Turion II * AMD Family 11h processors: Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra) Prefix: 'k10temp' Addresses scanned: PCI space Datasheets: BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors: http://support.amd.com/us/Processor_TechDocs/31116.pdf BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors: http://support.amd.com/us/Processor_TechDocs/41256.pdf Revision Guide for AMD Family 10h Processors: http://support.amd.com/us/Processor_TechDocs/41322.pdf Revision Guide for AMD Family 11h Processors: http://support.amd.com/us/Processor_TechDocs/41788.pdf AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks: http://support.amd.com/us/Processor_TechDocs/43373.pdf AMD Family 10h Server and Workstation Processor Power and Thermal Data Sheet: http://support.amd.com/us/Processor_TechDocs/43374.pdf AMD Family 10h Desktop Processor Power and Thermal Data Sheet: http://support.amd.com/us/Processor_TechDocs/43375.pdf Author: Clemens Ladisch <clemens@ladisch.de> Description ----------- This driver permits reading of the internal temperature sensor of AMD Family 10h and 11h processors. All these processors have a sensor, but on older revisions of Family 10h processors, the sensor may return inconsistent values (erratum 319). The driver will refuse to load on these revisions unless you specify the "force=1" module parameter. There is one temperature measurement value, available as temp1_input in sysfs. It is measured in degrees Celsius with a resolution of 1/8th degree. Please note that it is defined as a relative value; to quote the AMD manual: Tctl is the processor temperature control value, used by the platform to control cooling systems. Tctl is a non-physical temperature on an arbitrary scale measured in degrees. It does _not_ represent an actual physical temperature like die or case temperature. Instead, it specifies the processor temperature relative to the point at which the system must supply the maximum cooling for the processor's specified maximum case temperature and maximum thermal power dissipation. The maximum value for Tctl is available in the file temp1_max. If the BIOS has enabled hardware temperature control, the threshold at which the processor will throttle itself to avoid damage is available in temp1_crit and temp1_crit_hyst.
Documentation/kbuild/kbuild.txt +14 −0 Original line number Diff line number Diff line Output files modules.order -------------------------------------------------- This file records the order in which modules appear in Makefiles. This is used by modprobe to deterministically resolve aliases that match multiple modules. modules.builtin -------------------------------------------------- This file lists all modules that are built into the kernel. This is used by modprobe to not fail when trying to load something builtin. Environment variables KCPPFLAGS Loading
