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authorAlexander Usyskin <alexander.usyskin@intel.com>2018-02-25 20:07:05 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-03-14 19:33:13 +0100
commitaf336cabe08363ba8493e7d7e5d070353eb30caa (patch)
tree003025b642d6dcfab2a2f5ba220ce69ee69def65 /Documentation/ABI
parent257355a44b9929e55d6fd47bfff66971dc4de948 (diff)
mei: limit the number of queued writes
Limit the number of queued writes per client. Writes above this threshold are blocked till place in the transmit queue is available. The limit is configurable via sysfs and defaults to 50. The implementation should provide blocking I/O behavior. Prior to this change one would end up in the hands of OOM. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-class-mei9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-mei b/Documentation/ABI/testing/sysfs-class-mei
index 5096a82f4cde..81ff6abf9673 100644
--- a/Documentation/ABI/testing/sysfs-class-mei
+++ b/Documentation/ABI/testing/sysfs-class-mei
@@ -45,3 +45,12 @@ Contact: Tomas Winkler <tomas.winkler@intel.com>
Description: Display the driver HBM protocol version.
The HBM protocol version supported by the driver.
+
+What: /sys/class/mei/meiN/tx_queue_limit
+Date: Jan 2018
+KernelVersion: 4.16
+Contact: Tomas Winkler <tomas.winkler@intel.com>
+Description: Configure tx queue limit
+
+ Set maximal number of pending writes
+ per opened session.