From: green@linuxhacker.ru
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
devel@driverdev.osuosl.org,
Andreas Dilger <andreas.dilger@intel.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Oleg Drokin <green@linuxhacker.ru>
Subject: [PATCH 15/20] staging/lustre/libcfs: get rid of debugfs/lnet/console_backoff
Date: Mon, 6 Jul 2015 12:48:53 -0400 [thread overview]
Message-ID: <1436201338-14263-16-git-send-email-green@linuxhacker.ru> (raw)
In-Reply-To: <1436201338-14263-1-git-send-email-green@linuxhacker.ru>
From: Oleg Drokin <green@linuxhacker.ru>
module parameter libcfs_console_backoff accessible through
/sys/module/libcfs/parameters/libcfs_console_backoff would
do the same thing, just add a special "uintpos" parameter
type to disallow 0 values too.
Also add a symlink to the module parameter variable for
backwards compatibility
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
drivers/staging/lustre/lustre/libcfs/debug.c | 31 +++++++++++++-
drivers/staging/lustre/lustre/libcfs/module.c | 59 +++++++++++----------------
2 files changed, 54 insertions(+), 36 deletions(-)
diff --git a/drivers/staging/lustre/lustre/libcfs/debug.c b/drivers/staging/lustre/lustre/libcfs/debug.c
index 021c92f..147004ce 100644
--- a/drivers/staging/lustre/lustre/libcfs/debug.c
+++ b/drivers/staging/lustre/lustre/libcfs/debug.c
@@ -82,8 +82,37 @@ 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_uint_minmax(const char *val,
+ const struct kernel_param *kp,
+ unsigned int min, unsigned int max)
+{
+ unsigned int num;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+ ret = kstrtouint(val, 0, &num);
+ if (ret == -EINVAL || num < min || num > max)
+ return -EINVAL;
+ *((unsigned int *)kp->arg) = num;
+ return 0;
+}
+
+static int param_set_uintpos(const char *val, const struct kernel_param *kp)
+{
+ return param_set_uint_minmax(val, kp, 1, -1);
+}
+
+static struct kernel_param_ops param_ops_uintpos = {
+ .set = param_set_uintpos,
+ .get = param_get_uint,
+};
+
+#define param_check_uintpos(name, p) \
+ __param_check(name, p, unsigned int)
+
unsigned int libcfs_console_backoff = CDEBUG_DEFAULT_BACKOFF;
-module_param(libcfs_console_backoff, uint, 0644);
+module_param(libcfs_console_backoff, uintpos, 0644);
MODULE_PARM_DESC(libcfs_console_backoff, "Lustre kernel debug console backoff factor");
EXPORT_SYMBOL(libcfs_console_backoff);
diff --git a/drivers/staging/lustre/lustre/libcfs/module.c b/drivers/staging/lustre/lustre/libcfs/module.c
index 8a26446..8b9ce22 100644
--- a/drivers/staging/lustre/lustre/libcfs/module.c
+++ b/drivers/staging/lustre/lustre/libcfs/module.c
@@ -678,34 +678,6 @@ static int proc_console_min_delay_cs(struct ctl_table *table, int write,
return rc;
}
-static int proc_console_backoff(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int rc, backoff;
- struct ctl_table dummy = *table;
-
- dummy.data = &backoff;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- backoff = libcfs_console_backoff;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- backoff = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (backoff <= 0)
- return -EINVAL;
-
- libcfs_console_backoff = backoff;
-
- return rc;
-}
-
static int libcfs_force_lbug(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
@@ -815,13 +787,6 @@ static struct ctl_table lnet_table[] = {
.proc_handler = &proc_console_min_delay_cs
},
{
- .procname = "console_backoff",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_backoff
- },
-
- {
.procname = "cpu_partition_table",
.maxlen = 128,
.mode = 0444,
@@ -907,6 +872,23 @@ static struct ctl_table lnet_table[] = {
}
};
+struct lnet_debugfs_symlink_def {
+ char *name;
+ char *target;
+};
+
+struct lnet_debugfs_symlink_def lnet_debugfs_symlinks[] = {
+ { "console_ratelimit",
+ "/sys/module/libcfs/parameters/libcfs_console_ratelimit"},
+ { "debug_path",
+ "/sys/module/libcfs/parameters/libcfs_debug_file_path"},
+ { "panic_on_lbug",
+ "/sys/module/libcfs/parameters/libcfs_panic_on_lbug"},
+ { "libcfs_console_backoff",
+ "/sys/module/libcfs/parameters/libcfs_console_backoff"},
+ {},
+};
+
static ssize_t lnet_debugfs_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
@@ -944,6 +926,7 @@ static void insert_debugfs(void)
{
struct ctl_table *table;
struct dentry *entry;
+ struct lnet_debugfs_symlink_def *symlinks;
if (lnet_debugfs_root == NULL)
lnet_debugfs_root = debugfs_create_dir("lnet", NULL);
@@ -956,6 +939,12 @@ static void insert_debugfs(void)
entry = debugfs_create_file(table->procname, table->mode,
lnet_debugfs_root, table,
&lnet_debugfs_file_operations);
+
+ for (symlinks = lnet_debugfs_symlinks; symlinks->name; symlinks++)
+ entry = debugfs_create_symlink(symlinks->name,
+ lnet_debugfs_root,
+ symlinks->target);
+
}
static void remove_debugfs(void)
--
2.1.0
next prev parent reply other threads:[~2015-07-06 16:51 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-06 16:48 [PATCH 00/20] Lustre: final procfs bits removal green
2015-07-06 16:48 ` [PATCH 01/20] staging/lustre/lov: Move target sysfs symlink removal to object freeing green
2015-07-06 16:48 ` [PATCH 02/20] staging/lustre: make ldebugfs_remove recursive green
2015-07-06 16:48 ` [PATCH 03/20] staging/lustre/ldlm: In ldlm_pools_fini make sure there was init first green
2015-07-06 16:48 ` [PATCH 04/20] staging/lustre/obdclass: fix class_procfs_init error return value green
2015-07-06 16:48 ` [PATCH 05/20] staging/lustre: remove alloc_fail_rate sysctl green
2015-07-06 16:48 ` [PATCH 06/20] staging/lustre: Remove now obsolete memory tracking sysctls green
2015-07-06 16:48 ` [PATCH 07/20] staging/lustre: Remove unneeded ldlm_timeout control green
2015-07-06 16:48 ` [PATCH 08/20] staging/lustre/obdclass: move sysctl timeout to sysfs green
2015-07-06 16:48 ` [PATCH 09/20] staging/lustre/obdclass: move max_dirty_mb from sysctl " green
2015-07-06 16:48 ` [PATCH 10/20] staging/lustre/obdclass: move debug controls " green
2015-07-06 16:48 ` [PATCH 11/20] staging/lustre/obdclass: Move AT controls from sysctl " green
2015-07-06 16:48 ` [PATCH 12/20] staging/lustre: Get rid of remaining /proc/sys/lustre plumbing green
2015-07-06 16:48 ` [PATCH 13/20] staging/lustre/libcfs: move /proc/sys/lnet to debugfs green
2015-07-06 16:48 ` [PATCH 14/20] staging/lustre/libcfs: Remove redundant lnet debugfs variables green
2015-07-06 16:48 ` green [this message]
2015-07-08 8:28 ` [PATCH 15/20] staging/lustre/libcfs: get rid of debugfs/lnet/console_backoff Dan Carpenter
2015-07-08 8:30 ` Dan Carpenter
2015-07-08 13:43 ` Oleg Drokin
2015-07-06 16:48 ` [PATCH 16/20] staging/lustre/libcfs: Remove redundant enums and sysctl moduleparams green
2015-07-06 16:48 ` [PATCH 17/20] staging/lustre/libcfs: Remove unneeded lnet watchdog_ratelimit sysctl green
2015-07-06 16:48 ` [PATCH 18/20] staging/lustre/libcfs: get rid of debugfs/lnet/debug_mb green
2015-07-08 8:45 ` Dan Carpenter
2015-07-14 2:43 ` Greg Kroah-Hartman
2015-07-14 2:45 ` Oleg Drokin
2015-07-14 3:04 ` Greg Kroah-Hartman
2015-07-14 2:46 ` Greg Kroah-Hartman
2015-07-14 2:51 ` Oleg Drokin
2015-07-14 3:52 ` Greg Kroah-Hartman
2015-07-14 2:49 ` Greg Kroah-Hartman
2015-07-14 2:52 ` Oleg Drokin
2015-07-06 16:48 ` [PATCH 19/20] staging/lustre/libcfs: get rid of debugfs/lnet/console_{min,max}_delay_centisecs green
2015-07-06 16:48 ` [PATCH 20/20] staging/lustre/libcfs: remove unused portal_enter_debugger variable green
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1436201338-14263-16-git-send-email-green@linuxhacker.ru \
--to=green@linuxhacker.ru \
--cc=andreas.dilger@intel.com \
--cc=devel@driverdev.osuosl.org \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.