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-rw-r--r--Documentation/driver-api/crypto/iaa/iaa-crypto.rst100
1 files changed, 60 insertions, 40 deletions
diff --git a/Documentation/driver-api/crypto/iaa/iaa-crypto.rst b/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
index de587cf9cb..bba40158dd 100644
--- a/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
+++ b/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
@@ -179,7 +179,9 @@ has the old 'iax' device naming in place) ::
# configure wq1.0
- accel-config config-wq --group-id=0 --mode=dedicated --type=kernel --name="iaa_crypto" --device_name="crypto" iax1/wq1.0
+ accel-config config-wq --group-id=0 --mode=dedicated --type=kernel --priority=10 --name="iaa_crypto" --driver-name="crypto" iax1/wq1.0
+
+ accel-config config-engine iax1/engine1.0 --group-id=0
# enable IAA device iax1
@@ -321,33 +323,30 @@ driver will generate statistics which can be accessed in debugfs at::
# ls -al /sys/kernel/debug/iaa-crypto/
total 0
- drwxr-xr-x 2 root root 0 Mar 3 09:35 .
- drwx------ 47 root root 0 Mar 3 09:35 ..
- -rw-r--r-- 1 root root 0 Mar 3 09:35 max_acomp_delay_ns
- -rw-r--r-- 1 root root 0 Mar 3 09:35 max_adecomp_delay_ns
- -rw-r--r-- 1 root root 0 Mar 3 09:35 max_comp_delay_ns
- -rw-r--r-- 1 root root 0 Mar 3 09:35 max_decomp_delay_ns
- -rw-r--r-- 1 root root 0 Mar 3 09:35 stats_reset
- -rw-r--r-- 1 root root 0 Mar 3 09:35 total_comp_bytes_out
- -rw-r--r-- 1 root root 0 Mar 3 09:35 total_comp_calls
- -rw-r--r-- 1 root root 0 Mar 3 09:35 total_decomp_bytes_in
- -rw-r--r-- 1 root root 0 Mar 3 09:35 total_decomp_calls
- -rw-r--r-- 1 root root 0 Mar 3 09:35 wq_stats
-
-Most of the above statisticss are self-explanatory. The wq_stats file
-shows per-wq stats, a set for each iaa device and wq in addition to
-some global stats::
+ drwxr-xr-x 2 root root 0 Mar 3 07:55 .
+ drwx------ 53 root root 0 Mar 3 07:55 ..
+ -rw-r--r-- 1 root root 0 Mar 3 07:55 global_stats
+ -rw-r--r-- 1 root root 0 Mar 3 07:55 stats_reset
+ -rw-r--r-- 1 root root 0 Mar 3 07:55 wq_stats
- # cat wq_stats
+The global_stats file shows a set of global statistics collected since
+the driver has been loaded or reset::
+
+ # cat global_stats
global stats:
- total_comp_calls: 100
- total_decomp_calls: 100
- total_comp_bytes_out: 22800
- total_decomp_bytes_in: 22800
+ total_comp_calls: 4300
+ total_decomp_calls: 4164
+ total_sw_decomp_calls: 0
+ total_comp_bytes_out: 5993989
+ total_decomp_bytes_in: 5993989
total_completion_einval_errors: 0
total_completion_timeout_errors: 0
- total_completion_comp_buf_overflow_errors: 0
+ total_completion_comp_buf_overflow_errors: 136
+
+The wq_stats file shows per-wq stats, a set for each iaa device and wq
+in addition to some global stats::
+ # cat wq_stats
iaa device:
id: 1
n_wqs: 1
@@ -379,21 +378,36 @@ some global stats::
iaa device:
id: 5
n_wqs: 1
- comp_calls: 100
- comp_bytes: 22800
- decomp_calls: 100
- decomp_bytes: 22800
+ comp_calls: 1360
+ comp_bytes: 1999776
+ decomp_calls: 0
+ decomp_bytes: 0
wqs:
name: iaa_crypto
- comp_calls: 100
- comp_bytes: 22800
- decomp_calls: 100
- decomp_bytes: 22800
+ comp_calls: 1360
+ comp_bytes: 1999776
+ decomp_calls: 0
+ decomp_bytes: 0
-Writing 0 to 'stats_reset' resets all the stats, including the
+ iaa device:
+ id: 7
+ n_wqs: 1
+ comp_calls: 2940
+ comp_bytes: 3994213
+ decomp_calls: 4164
+ decomp_bytes: 5993989
+ wqs:
+ name: iaa_crypto
+ comp_calls: 2940
+ comp_bytes: 3994213
+ decomp_calls: 4164
+ decomp_bytes: 5993989
+ ...
+
+Writing to 'stats_reset' resets all the stats, including the
per-device and per-wq stats::
- # echo 0 > stats_reset
+ # echo 1 > stats_reset
# cat wq_stats
global stats:
total_comp_calls: 0
@@ -457,7 +471,6 @@ Use the following commands to enable zswap::
# echo deflate-iaa > /sys/module/zswap/parameters/compressor
# echo zsmalloc > /sys/module/zswap/parameters/zpool
# echo 1 > /sys/module/zswap/parameters/enabled
- # echo 0 > /sys/module/zswap/parameters/same_filled_pages_enabled
# echo 100 > /proc/sys/vm/swappiness
# echo never > /sys/kernel/mm/transparent_hugepage/enabled
# echo 1 > /proc/sys/vm/overcommit_memory
@@ -536,12 +549,20 @@ The below script automatically does that::
echo "End Disable IAA"
+ echo "Reload iaa_crypto module"
+
+ rmmod iaa_crypto
+ modprobe iaa_crypto
+
+ echo "End Reload iaa_crypto module"
+
#
# configure iaa wqs and devices
#
echo "Configure IAA"
for ((i = 1; i < ${num_iaa} * 2; i += 2)); do
- accel-config config-wq --group-id=0 --mode=dedicated --size=128 --priority=10 --type=kernel --name="iaa_crypto" --driver_name="crypto" iax${i}/wq${i}
+ accel-config config-wq --group-id=0 --mode=dedicated --wq-size=128 --priority=10 --type=kernel --name="iaa_crypto" --driver-name="crypto" iax${i}/wq${i}.0
+ accel-config config-engine iax${i}/engine${i}.0 --group-id=0
done
echo "End Configure IAA"
@@ -552,10 +573,10 @@ The below script automatically does that::
echo "Enable IAA"
for ((i = 1; i < ${num_iaa} * 2; i += 2)); do
- echo enable iaa iaa${i}
- accel-config enable-device iaa${i}
- echo enable wq iaa${i}/wq${i}.0
- accel-config enable-wq iaa${i}/wq${i}.0
+ echo enable iaa iax${i}
+ accel-config enable-device iax${i}
+ echo enable wq iax${i}/wq${i}.0
+ accel-config enable-wq iax${i}/wq${i}.0
done
echo "End Enable IAA"
@@ -599,7 +620,6 @@ the 'fixed' compression mode::
echo deflate-iaa > /sys/module/zswap/parameters/compressor
echo zsmalloc > /sys/module/zswap/parameters/zpool
echo 1 > /sys/module/zswap/parameters/enabled
- echo 0 > /sys/module/zswap/parameters/same_filled_pages_enabled
echo 100 > /proc/sys/vm/swappiness
echo never > /sys/kernel/mm/transparent_hugepage/enabled