Revision befb1b3c2703897c5b8ffb0044dc5d0e5f27c5d7 authored by Reinette Chatre on 19 September 2018, 17:29:06 UTC, committed by Thomas Gleixner on 28 September 2018, 20:44:53 UTC
It is possible that a failure can occur during the scheduling of a pinned event. The initial portion of perf_event_read_local() contains the various error checks an event should pass before it can be considered valid. Ensure that the potential scheduling failure of a pinned event is checked for and have a credible error. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: fenghua.yu@intel.com Cc: tony.luck@intel.com Cc: acme@kernel.org Cc: gavin.hindman@intel.com Cc: jithu.joseph@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/6486385d1f30336e9973b24c8c65f5079543d3d3.1537377064.git.reinette.chatre@intel.com
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max1668
Kernel driver max1668
=====================
Supported chips:
* Maxim MAX1668, MAX1805 and MAX1989
Prefix: 'max1668'
Addresses scanned: I2C 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e
Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX1668-MAX1989.pdf
Author:
David George <david.george@ska.ac.za>
Description
-----------
This driver implements support for the Maxim MAX1668, MAX1805 and MAX1989
chips.
The three devices are very similar, but the MAX1805 has a reduced feature
set; only two remote temperature inputs vs the four available on the other
two ICs.
The driver is able to distinguish between the devices and creates sysfs
entries as follows:
MAX1805, MAX1668 and MAX1989:
temp1_input ro local (ambient) temperature
temp1_max rw local temperature maximum threshold for alarm
temp1_max_alarm ro local temperature maximum threshold alarm
temp1_min rw local temperature minimum threshold for alarm
temp1_min_alarm ro local temperature minimum threshold alarm
temp2_input ro remote temperature 1
temp2_max rw remote temperature 1 maximum threshold for alarm
temp2_max_alarm ro remote temperature 1 maximum threshold alarm
temp2_min rw remote temperature 1 minimum threshold for alarm
temp2_min_alarm ro remote temperature 1 minimum threshold alarm
temp3_input ro remote temperature 2
temp3_max rw remote temperature 2 maximum threshold for alarm
temp3_max_alarm ro remote temperature 2 maximum threshold alarm
temp3_min rw remote temperature 2 minimum threshold for alarm
temp3_min_alarm ro remote temperature 2 minimum threshold alarm
MAX1668 and MAX1989 only:
temp4_input ro remote temperature 3
temp4_max rw remote temperature 3 maximum threshold for alarm
temp4_max_alarm ro remote temperature 3 maximum threshold alarm
temp4_min rw remote temperature 3 minimum threshold for alarm
temp4_min_alarm ro remote temperature 3 minimum threshold alarm
temp5_input ro remote temperature 4
temp5_max rw remote temperature 4 maximum threshold for alarm
temp5_max_alarm ro remote temperature 4 maximum threshold alarm
temp5_min rw remote temperature 4 minimum threshold for alarm
temp5_min_alarm ro remote temperature 4 minimum threshold alarm
Module Parameters
-----------------
* read_only: int
Set to non-zero if you wish to prevent write access to alarm thresholds.
Computing file changes ...
