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Message-Id: <1436843877-28258-3-git-send-email-green@linuxhacker.ru>
Date: Mon, 13 Jul 2015 23:17:55 -0400
From: green@...uxhacker.ru
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devel@...verdev.osuosl.org,
Andreas Dilger <andreas.dilger@...el.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Dmitry Eremin <dmitry.eremin@...el.com>,
Oleg Drokin <green@...uxhacker.ru>
Subject: [PATCH 2/4] staging/lustre/libcfs: get rid of debugfs/lnet/console_{min,max}_delay_centisecs
From: Dmitry Eremin <dmitry.eremin@...el.com>
They are just fancy module parameters wrappers,
so just the same functionality now would be accessible via
/sys/module/libcfs/parameters/libcfs_console_{min,max}_delay
Also install compatibility symlinks
Signed-off-by: Dmitry Eremin <dmitry.eremin@...el.com>
Signed-off-by: Oleg Drokin <green@...uxhacker.ru>
---
drivers/staging/lustre/lustre/libcfs/debug.c | 69 ++++++++++++++++++++--
drivers/staging/lustre/lustre/libcfs/module.c | 82 ++-------------------------
2 files changed, 68 insertions(+), 83 deletions(-)
diff --git a/drivers/staging/lustre/lustre/libcfs/debug.c b/drivers/staging/lustre/lustre/libcfs/debug.c
index 995a1e3..1cc714c 100644
--- a/drivers/staging/lustre/lustre/libcfs/debug.c
+++ b/drivers/staging/lustre/lustre/libcfs/debug.c
@@ -106,16 +106,75 @@ module_param(libcfs_console_ratelimit, uint, 0644);
MODULE_PARM_DESC(libcfs_console_ratelimit, "Lustre kernel debug console ratelimit (0 to disable)");
EXPORT_SYMBOL(libcfs_console_ratelimit);
+static int param_set_delay_minmax(const char *val,
+ const struct kernel_param *kp,
+ long min, long max)
+{
+ long d;
+ int sec;
+ int rc;
+
+ rc = kstrtoint(val, 0, &sec);
+ if (rc)
+ return -EINVAL;
+
+ d = cfs_time_seconds(sec) / 100;
+ if (d < min || d > max)
+ return -EINVAL;
+
+ *((unsigned int *)kp->arg) = d;
+
+ return 0;
+}
+
+static int param_get_delay(char *buffer, const struct kernel_param *kp)
+{
+ unsigned int d = *(unsigned int *)kp->arg;
+
+ return sprintf(buffer, "%u", (unsigned int)cfs_duration_sec(d * 100));
+}
+
unsigned int libcfs_console_max_delay;
-module_param(libcfs_console_max_delay, uint, 0644);
-MODULE_PARM_DESC(libcfs_console_max_delay, "Lustre kernel debug console max delay (jiffies)");
EXPORT_SYMBOL(libcfs_console_max_delay);
-
unsigned int libcfs_console_min_delay;
-module_param(libcfs_console_min_delay, uint, 0644);
-MODULE_PARM_DESC(libcfs_console_min_delay, "Lustre kernel debug console min delay (jiffies)");
EXPORT_SYMBOL(libcfs_console_min_delay);
+static int param_set_console_max_delay(const char *val,
+ const struct kernel_param *kp)
+{
+ return param_set_delay_minmax(val, kp,
+ libcfs_console_min_delay, INT_MAX);
+}
+
+static struct kernel_param_ops param_ops_console_max_delay = {
+ .set = param_set_console_max_delay,
+ .get = param_get_delay,
+};
+
+#define param_check_console_max_delay(name, p) \
+ __param_check(name, p, unsigned int)
+
+module_param(libcfs_console_max_delay, console_max_delay, 0644);
+MODULE_PARM_DESC(libcfs_console_max_delay, "Lustre kernel debug console max delay (jiffies)");
+
+static int param_set_console_min_delay(const char *val,
+ const struct kernel_param *kp)
+{
+ return param_set_delay_minmax(val, kp,
+ 1, libcfs_console_max_delay);
+}
+
+static struct kernel_param_ops param_ops_console_min_delay = {
+ .set = param_set_console_min_delay,
+ .get = param_get_delay,
+};
+
+#define param_check_console_min_delay(name, p) \
+ __param_check(name, p, unsigned int)
+
+module_param(libcfs_console_min_delay, console_min_delay, 0644);
+MODULE_PARM_DESC(libcfs_console_min_delay, "Lustre kernel debug console min delay (jiffies)");
+
static int param_set_uint_minmax(const char *val,
const struct kernel_param *kp,
unsigned int min, unsigned int max)
diff --git a/drivers/staging/lustre/lustre/libcfs/module.c b/drivers/staging/lustre/lustre/libcfs/module.c
index acfe778..0ed2658 100644
--- a/drivers/staging/lustre/lustre/libcfs/module.c
+++ b/drivers/staging/lustre/lustre/libcfs/module.c
@@ -550,72 +550,6 @@ static int proc_daemon_file(struct ctl_table *table, int write,
__proc_daemon_file);
}
-static int proc_console_max_delay_cs(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos)
-{
- int rc, max_delay_cs;
- struct ctl_table dummy = *table;
- long d;
-
- dummy.data = &max_delay_cs;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- max_delay_cs = cfs_duration_sec(libcfs_console_max_delay * 100);
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- max_delay_cs = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (max_delay_cs <= 0)
- return -EINVAL;
-
- d = cfs_time_seconds(max_delay_cs) / 100;
- if (d == 0 || d < libcfs_console_min_delay)
- return -EINVAL;
- libcfs_console_max_delay = d;
-
- return rc;
-}
-
-static int proc_console_min_delay_cs(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos)
-{
- int rc, min_delay_cs;
- struct ctl_table dummy = *table;
- long d;
-
- dummy.data = &min_delay_cs;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- min_delay_cs = cfs_duration_sec(libcfs_console_min_delay * 100);
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- min_delay_cs = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (min_delay_cs <= 0)
- return -EINVAL;
-
- d = cfs_time_seconds(min_delay_cs) / 100;
- if (d == 0 || d > libcfs_console_max_delay)
- return -EINVAL;
- libcfs_console_min_delay = d;
-
- return rc;
-}
-
static int libcfs_force_lbug(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
@@ -713,18 +647,6 @@ static struct ctl_table lnet_table[] = {
.proc_handler = &proc_dobitmasks,
},
{
- .procname = "console_max_delay_centisecs",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_max_delay_cs
- },
- {
- .procname = "console_min_delay_centisecs",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_min_delay_cs
- },
- {
.procname = "cpu_partition_table",
.maxlen = 128,
.mode = 0444,
@@ -805,6 +727,10 @@ struct lnet_debugfs_symlink_def lnet_debugfs_symlinks[] = {
"/sys/module/libcfs/parameters/libcfs_console_backoff"},
{ "debug_mb",
"/sys/module/libcfs/parameters/libcfs_debug_mb"},
+ { "console_min_delay_centisecs",
+ "/sys/module/libcfs/parameters/libcfs_console_min_delay"},
+ { "console_max_delay_centisecs",
+ "/sys/module/libcfs/parameters/libcfs_console_max_delay"},
{},
};
--
2.1.0
--
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