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Message-Id: <20240304212011.1525003-4-tom.zanussi@linux.intel.com>
Date: Mon, 4 Mar 2024 15:20:10 -0600
From: Tom Zanussi <tom.zanussi@...ux.intel.com>
To: herbert@...dor.apana.org.au,
davem@...emloft.net
Cc: andre.glover@...ux.intel.com,
linux-kernel@...r.kernel.org,
linux-crypto@...r.kernel.org,
dmaengine@...r.kernel.org
Subject: [PATCH 3/4] 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@...ux.intel.com>
---
.../driver-api/crypto/iaa/iaa-crypto.rst | 76 +++++++++++--------
drivers/crypto/intel/iaa/iaa_crypto_stats.c | 30 ++++----
2 files changed, 61 insertions(+), 45 deletions(-)
diff --git a/Documentation/driver-api/crypto/iaa/iaa-crypto.rst b/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
index de587cf9cbed..7b28aef39ba0 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
diff --git a/drivers/crypto/intel/iaa/iaa_crypto_stats.c b/drivers/crypto/intel/iaa/iaa_crypto_stats.c
index 7820062a91e5..0f225bdf2279 100644
--- a/drivers/crypto/intel/iaa/iaa_crypto_stats.c
+++ b/drivers/crypto/intel/iaa/iaa_crypto_stats.c
@@ -159,7 +159,7 @@ static void device_stats_show(struct seq_file *m, struct iaa_device *iaa_device)
wq_show(m, iaa_wq);
}
-static void global_stats_show(struct seq_file *m)
+static int global_stats_show(struct seq_file *m, void *v)
{
seq_puts(m, "global stats:\n");
seq_printf(m, " total_comp_calls: %llu\n", total_comp_calls);
@@ -173,6 +173,8 @@ static void global_stats_show(struct seq_file *m)
total_completion_timeout_errors);
seq_printf(m, " total_completion_comp_buf_overflow_errors: %llu\n\n",
total_completion_comp_buf_overflow_errors);
+
+ return 0;
}
static int wq_stats_show(struct seq_file *m, void *v)
@@ -181,8 +183,6 @@ static int wq_stats_show(struct seq_file *m, void *v)
mutex_lock(&iaa_devices_lock);
- global_stats_show(m);
-
list_for_each_entry(iaa_device, &iaa_devices, list)
device_stats_show(m, iaa_device);
@@ -219,6 +219,18 @@ static const struct file_operations wq_stats_fops = {
.release = single_release,
};
+static int global_stats_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, global_stats_show, file);
+}
+
+static const struct file_operations global_stats_fops = {
+ .open = global_stats_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
DEFINE_DEBUGFS_ATTRIBUTE(wq_stats_reset_fops, NULL, iaa_crypto_stats_reset, "%llu\n");
int __init iaa_crypto_debugfs_init(void)
@@ -228,16 +240,8 @@ int __init iaa_crypto_debugfs_init(void)
iaa_crypto_debugfs_root = debugfs_create_dir("iaa_crypto", NULL);
- debugfs_create_u64("total_comp_calls", 0644,
- iaa_crypto_debugfs_root, &total_comp_calls);
- debugfs_create_u64("total_decomp_calls", 0644,
- iaa_crypto_debugfs_root, &total_decomp_calls);
- debugfs_create_u64("total_sw_decomp_calls", 0644,
- iaa_crypto_debugfs_root, &total_sw_decomp_calls);
- debugfs_create_u64("total_comp_bytes_out", 0644,
- iaa_crypto_debugfs_root, &total_comp_bytes_out);
- debugfs_create_u64("total_decomp_bytes_in", 0644,
- iaa_crypto_debugfs_root, &total_decomp_bytes_in);
+ debugfs_create_file("global_stats", 0644, iaa_crypto_debugfs_root, NULL,
+ &global_stats_fops);
debugfs_create_file("wq_stats", 0644, iaa_crypto_debugfs_root, NULL,
&wq_stats_fops);
debugfs_create_file("stats_reset", 0644, iaa_crypto_debugfs_root, NULL,
--
2.34.1
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