crypto: iaa - Add global_stats file and remove individual stat files

Currently, the wq_stats output also includes the global stats, while
the individual global stats are also available as separate debugfs
files.  Since these are all read-only, there's really no reason to
have them as separate files, especially since we already display them
as global stats in the wq_stats.  It makes more sense to just add a
separate global_stats file to display those, and remove them from the
wq_stats, as well as removing the individual stats files.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 44 insertions, 32 deletions

diff --git a/Documentation/driver-api/crypto/iaa/iaa-crypto.rst b/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
index de587cf9cbed45..7b28aef39ba00d 100644
--- a/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
+++ b/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
@@ -321,33 +321,30 @@ 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 +376,36 @@ 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
+
+  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 0 to 'stats_reset' resets all the stats, including the
+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