litmus-rt.git - The LITMUS^RT kernel.

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author	Linus Torvalds <torvalds@linux-foundation.org>	2010-09-07 17:08:37 -0400
committer	Linus Torvalds <torvalds@linux-foundation.org>	2010-09-07 17:08:37 -0400
commit	ce7db282a3830f57f5b05ec48288c23a5c4d66d5 (patch)
tree	8e191c4b2ffa1658d5c014da5cc6230fc58c1a59 /kernel/fork.c
parent	cd4d4fc4137502f88ee871fc015a934dc28535e3 (diff)
parent	54157c44471f5e266508ac08d270f2bc5857e8bb (diff)

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: fix a mismatch between code and comment percpu: fix a memory leak in pcpu_extend_area_map() percpu: add __percpu notations to UP allocator percpu: handle __percpu notations in UP accessors

Diffstat (limited to 'kernel/fork.c')

0 files changed, 0 insertions, 0 deletions

Kernel driver jc42 ================== Supported chips: * Analog Devices ADT7408 Datasheets: http://www.analog.com/static/imported-files/data_sheets/ADT7408.pdf * Atmel AT30TS00, AT30TS002A/B, AT30TSE004A Datasheets: http://www.atmel.com/Images/doc8585.pdf http://www.atmel.com/Images/doc8711.pdf http://www.atmel.com/Images/Atmel-8852-SEEPROM-AT30TSE002A-Datasheet.pdf http://www.atmel.com/Images/Atmel-8868-DTS-AT30TSE004A-Datasheet.pdf * IDT TSE2002B3, TSE2002GB2, TSE2004GB2, TS3000B3, TS3000GB0, TS3000GB2, TS3001GB2 Datasheets: Available from IDT web site * Maxim MAX6604 Datasheets: http://datasheets.maxim-ic.com/en/ds/MAX6604.pdf * Microchip MCP9804, MCP9805, MCP9808, MCP98242, MCP98243, MCP98244, MCP9843 Datasheets: http://ww1.microchip.com/downloads/en/DeviceDoc/22203C.pdf http://ww1.microchip.com/downloads/en/DeviceDoc/21977b.pdf http://ww1.microchip.com/downloads/en/DeviceDoc/25095A.pdf http://ww1.microchip.com/downloads/en/DeviceDoc/21996a.pdf http://ww1.microchip.com/downloads/en/DeviceDoc/22153c.pdf http://ww1.microchip.com/downloads/en/DeviceDoc/22327A.pdf * NXP Semiconductors SE97, SE97B, SE98, SE98A Datasheets: http://www.nxp.com/documents/data_sheet/SE97.pdf http://www.nxp.com/documents/data_sheet/SE97B.pdf http://www.nxp.com/documents/data_sheet/SE98.pdf http://www.nxp.com/documents/data_sheet/SE98A.pdf * ON Semiconductor CAT34TS02, CAT6095 Datasheet: http://www.onsemi.com/pub_link/Collateral/CAT34TS02-D.PDF http://www.onsemi.com/pub/Collateral/CAT6095-D.PDF * ST Microelectronics STTS424, STTS424E02, STTS2002, STTS2004, STTS3000 Datasheets: http://www.st.com/web/en/resource/technical/document/datasheet/CD00157556.pdf http://www.st.com/web/en/resource/technical/document/datasheet/CD00157558.pdf http://www.st.com/web/en/resource/technical/document/datasheet/CD00266638.pdf http://www.st.com/web/en/resource/technical/document/datasheet/CD00225278.pdf http://www.st.com/web/en/resource/technical/document/datasheet/DM00076709.pdf * JEDEC JC 42.4 compliant temperature sensor chips Datasheet: http://www.jedec.org/sites/default/files/docs/4_01_04R19.pdf Common for all chips: Prefix: 'jc42' Addresses scanned: I2C 0x18 - 0x1f Author: Guenter Roeck <linux@roeck-us.net> Description ----------- This driver implements support for JEDEC JC 42.4 compliant temperature sensors, which are used on many DDR3 memory modules for mobile devices and servers. Some systems use the sensor to prevent memory overheating by automatically throttling the memory controller. The driver auto-detects the chips listed above, but can be manually instantiated to support other JC 42.4 compliant chips. Example: the following will load the driver for a generic JC 42.4 compliant temperature sensor at address 0x18 on I2C bus #1: # modprobe jc42 # echo jc42 0x18 > /sys/bus/i2c/devices/i2c-1/new_device A JC 42.4 compliant chip supports a single temperature sensor. Minimum, maximum, and critical temperature can be configured. There are alarms for high, low, and critical thresholds. There is also an hysteresis to control the thresholds for resetting alarms. Per JC 42.4 specification, the hysteresis threshold can be configured to 0, 1.5, 3.0, and 6.0 degrees C. Configured hysteresis values will be rounded to those limits. The chip supports only a single register to configure the hysteresis, which applies to all limits. This register can be written by writing into temp1_crit_hyst. Other hysteresis attributes are read-only. If the BIOS has configured the sensor for automatic temperature management, it is likely that it has locked the registers, i.e., that the temperature limits cannot be changed. Sysfs entries ------------- temp1_input Temperature (RO) temp1_min Minimum temperature (RO or RW) temp1_max Maximum temperature (RO or RW) temp1_crit Critical high temperature (RO or RW) temp1_crit_hyst Critical hysteresis temperature (RO or RW) temp1_max_hyst Maximum hysteresis temperature (RO) temp1_min_alarm Temperature low alarm temp1_max_alarm Temperature high alarm temp1_crit_alarm Temperature critical alarm


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