aboutsummaryrefslogtreecommitdiff
path: root/drivers/hwmon/ibmaem.c
AgeCommit message (Collapse)Author
2008-08-15ibmaem: don't query the entire sensor repository when reading energy meterDarrick J. Wong
Currently, all sensors are read when the energy meter is queried via sysfs. This introduces a considerable amount of delay and variation in the sysfs reading, which is not desirable when trying to profile energy use. Therefore, read only the energy meters when a sysfs query comes in for them, and don't cache the results so that we always get the latest reading. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-15ibmaem: prevent infinite probing loop on x3650 M2 systemsDarrick J. Wong
On older machines, probing for a nonexistent AEM interface returned an IPMI error; when we saw this, we'd stop probing. On the x3650 M2 and (presumably) later, we are returned a value indicating success and a buffer full of garbage or zeroes. This causes the probe function to run in an infinite loop. To fix this, we add one last check--if the interface number we're looking for is higher than the number of interfaces that AEM claims to have, stop probing. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-15ibmaem: update the documentation to reflect the current nameDarrick J. Wong
Minor documentation update to reflect the current full name of the power management hardware interface and reflows the text a bit. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-04ibmaem endianness annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24ibmaem: new driver for power/energy/temp meters in IBM System X hardwareDarrick J. Wong
This driver reads IBM Active Energy Manager energy/temperature/power sensors on IBM System X hardware. [akpm@linux-foundation.org: fix printk warnings] Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>