diff options
Diffstat (limited to 'Documentation/ABI/testing')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci | 11 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-system-cpu | 24 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-efi | 20 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-efi-runtime-map | 34 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 31 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-boot_params | 38 |
6 files changed, 151 insertions, 7 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci index 5210a51c90fd..a3c5a6685036 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -70,18 +70,15 @@ Date: September, 2011 Contact: Neil Horman <nhorman@tuxdriver.com> Description: The /sys/devices/.../msi_irqs directory contains a variable set - of sub-directories, with each sub-directory being named after a - corresponding msi irq vector allocated to that device. Each - numbered sub-directory N contains attributes of that irq. - Note that this directory is not created for device drivers which - do not support msi irqs + of files, with each file being named after a corresponding msi + irq vector allocated to that device. -What: /sys/bus/pci/devices/.../msi_irqs/<N>/mode +What: /sys/bus/pci/devices/.../msi_irqs/<N> Date: September 2011 Contact: Neil Horman <nhorman@tuxdriver.com> Description: This attribute indicates the mode that the irq vector named by - the parent directory is in (msi vs. msix) + the file is in (msi vs. msix) What: /sys/bus/pci/devices/.../remove Date: January 2009 diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index 468e4d48f884..d5a0d33c571f 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -200,3 +200,27 @@ Description: address and size of the percpu note. note of cpu#. crash_notes_size: size of the note of cpu#. + + +What: /sys/devices/system/cpu/intel_pstate/max_perf_pct + /sys/devices/system/cpu/intel_pstate/min_perf_pct + /sys/devices/system/cpu/intel_pstate/no_turbo +Date: February 2013 +Contact: linux-pm@vger.kernel.org +Description: Parameters for the Intel P-state driver + + Logic for selecting the current P-state in Intel + Sandybridge+ processors. The three knobs control + limits for the P-state that will be requested by the + driver. + + max_perf_pct: limits the maximum P state that will be requested by + the driver stated as a percentage of the available performance. + + min_perf_pct: limits the minimum P state that will be requested by + the driver stated as a percentage of the available performance. + + no_turbo: limits the driver to selecting P states below the turbo + frequency range. + + More details can be found in Documentation/cpu-freq/intel-pstate.txt diff --git a/Documentation/ABI/testing/sysfs-firmware-efi b/Documentation/ABI/testing/sysfs-firmware-efi new file mode 100644 index 000000000000..05874da7ce80 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-firmware-efi @@ -0,0 +1,20 @@ +What: /sys/firmware/efi/fw_vendor +Date: December 2013 +Contact: Dave Young <dyoung@redhat.com> +Description: It shows the physical address of firmware vendor field in the + EFI system table. +Users: Kexec + +What: /sys/firmware/efi/runtime +Date: December 2013 +Contact: Dave Young <dyoung@redhat.com> +Description: It shows the physical address of runtime service table entry in + the EFI system table. +Users: Kexec + +What: /sys/firmware/efi/config_table +Date: December 2013 +Contact: Dave Young <dyoung@redhat.com> +Description: It shows the physical address of config table entry in the EFI + system table. +Users: Kexec diff --git a/Documentation/ABI/testing/sysfs-firmware-efi-runtime-map b/Documentation/ABI/testing/sysfs-firmware-efi-runtime-map new file mode 100644 index 000000000000..c61b9b348e99 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-firmware-efi-runtime-map @@ -0,0 +1,34 @@ +What: /sys/firmware/efi/runtime-map/ +Date: December 2013 +Contact: Dave Young <dyoung@redhat.com> +Description: Switching efi runtime services to virtual mode requires + that all efi memory ranges which have the runtime attribute + bit set to be mapped to virtual addresses. + + The efi runtime services can only be switched to virtual + mode once without rebooting. The kexec kernel must maintain + the same physical to virtual address mappings as the first + kernel. The mappings are exported to sysfs so userspace tools + can reassemble them and pass them into the kexec kernel. + + /sys/firmware/efi/runtime-map/ is the directory the kernel + exports that information in. + + subdirectories are named with the number of the memory range: + + /sys/firmware/efi/runtime-map/0 + /sys/firmware/efi/runtime-map/1 + /sys/firmware/efi/runtime-map/2 + /sys/firmware/efi/runtime-map/3 + ... + + Each subdirectory contains five files: + + attribute : The attributes of the memory range. + num_pages : The size of the memory range in pages. + phys_addr : The physical address of the memory range. + type : The type of the memory range. + virt_addr : The virtual address of the memory range. + + Above values are all hexadecimal numbers with the '0x' prefix. +Users: Kexec diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 31942efcaf0e..32b0809203dd 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -24,3 +24,34 @@ Date: July 2013 Contact: "Namjae Jeon" <namjae.jeon@samsung.com> Description: Controls the victim selection policy for garbage collection. + +What: /sys/fs/f2fs/<disk>/reclaim_segments +Date: October 2013 +Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> +Description: + Controls the issue rate of segment discard commands. + +What: /sys/fs/f2fs/<disk>/ipu_policy +Date: November 2013 +Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> +Description: + Controls the in-place-update policy. + +What: /sys/fs/f2fs/<disk>/min_ipu_util +Date: November 2013 +Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> +Description: + Controls the FS utilization condition for the in-place-update + policies. + +What: /sys/fs/f2fs/<disk>/max_small_discards +Date: November 2013 +Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> +Description: + Controls the issue rate of small discard commands. + +What: /sys/fs/f2fs/<disk>/max_victim_search +Date: January 2014 +Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> +Description: + Controls the number of trials to find a victim segment. diff --git a/Documentation/ABI/testing/sysfs-kernel-boot_params b/Documentation/ABI/testing/sysfs-kernel-boot_params new file mode 100644 index 000000000000..eca38ce2852d --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-boot_params @@ -0,0 +1,38 @@ +What: /sys/kernel/boot_params +Date: December 2013 +Contact: Dave Young <dyoung@redhat.com> +Description: The /sys/kernel/boot_params directory contains two + files: "data" and "version" and one subdirectory "setup_data". + It is used to export the kernel boot parameters of an x86 + platform to userspace for kexec and debugging purpose. + + If there's no setup_data in boot_params the subdirectory will + not be created. + + "data" file is the binary representation of struct boot_params. + + "version" file is the string representation of boot + protocol version. + + "setup_data" subdirectory contains the setup_data data + structure in boot_params. setup_data is maintained in kernel + as a link list. In "setup_data" subdirectory there's one + subdirectory for each link list node named with the number + of the list nodes. The list node subdirectory contains two + files "type" and "data". "type" file is the string + representation of setup_data type. "data" file is the binary + representation of setup_data payload. + + The whole boot_params directory structure is like below: + /sys/kernel/boot_params + |__ data + |__ setup_data + | |__ 0 + | | |__ data + | | |__ type + | |__ 1 + | |__ data + | |__ type + |__ version + +Users: Kexec |