summaryrefslogtreecommitdiff
path: root/Documentation/ABI
diff options
context:
space:
mode:
authorKajol Jain <kjain@linux.ibm.com>2020-10-03 10:49:40 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2020-10-07 14:34:48 +0300
commit264a034099b6e3c76fae85e75329373f3652a033 (patch)
tree0ff59d485ac160d9068de69a8b821fa7486d921b /Documentation/ABI
parent0f9866f7e85765bbda86666df56c92f377c3bc10 (diff)
downloadlinux-264a034099b6e3c76fae85e75329373f3652a033.tar.xz
Documentation/ABI: Add ABI documentation for hv-24x7 format
This patch adds ABI documentation for hv-24x7 format. Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201003074943.338618-2-kjain@linux.ibm.com
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x725
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
index e82fc37be802..2273627df190 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
@@ -1,3 +1,28 @@
+What: /sys/bus/event_source/devices/hv_24x7/format
+Date: September 2020
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: Read-only. Attribute group to describe the magic bits
+ that go into perf_event_attr.config for a particular pmu.
+ (See ABI/testing/sysfs-bus-event_source-devices-format).
+
+ Each attribute under this group defines a bit range of the
+ perf_event_attr.config. All supported attributes are listed
+ below.
+
+ chip = "config:16-31"
+ core = "config:16-31"
+ domain = "config:0-3"
+ lpar = "config:0-15"
+ offset = "config:32-63"
+ vcpu = "config:16-31"
+
+ For example,
+
+ PM_PB_CYC = "domain=1,offset=0x80,chip=?,lpar=0x0"
+
+ In this event, '?' after chip specifies that
+ this value will be provided by user while running this event.
+
What: /sys/bus/event_source/devices/hv_24x7/interface/catalog
Date: February 2014
Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>