From: Luis Chamberlain <mcgrof@kernel.org>
To: keescook@chromium.org, yzaikin@google.com, nixiaoming@huawei.com,
ebiederm@xmission.com, axboe@kernel.dk, clemens@ladisch.de,
arnd@arndb.de, gregkh@linuxfoundation.org,
jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com,
rodrigo.vivi@intel.com, airlied@linux.ie, daniel@ffwll.ch,
benh@kernel.crashing.org, rdna@fb.com, viro@zeniv.linux.org.uk,
mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com,
vbabka@suse.cz, sfr@canb.auug.org.au, jack@suse.cz,
amir73il@gmail.com, rafael@kernel.org, tytso@mit.edu
Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, julia.lawall@lip6.fr,
Luis Chamberlain <mcgrof@kernel.org>,
akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org,
ocfs2-devel@oss.oracle.com
Subject: [Ocfs2-devel] [PATCH 10/13] eventpoll: simplify sysctl declaration with register_sysctl_subdir()
Date: Fri, 29 May 2020 07:41:05 +0000 [thread overview]
Message-ID: <20200529074108.16928-11-mcgrof@kernel.org> (raw)
In-Reply-To: <20200529074108.16928-1-mcgrof@kernel.org>
From: Xiaoming Ni <nixiaoming@huawei.com>
Move epoll_table sysctl to fs/eventpoll.c and remove the
clutter out of kernel/sysctl.c by using register_sysctl_subdir()..
Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
fs/eventpoll.c | 10 +++++++++-
include/linux/poll.h | 2 --
include/linux/sysctl.h | 1 -
kernel/sysctl.c | 7 -------
4 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 12eebcdea9c8..957ebc9700e3 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -299,7 +299,7 @@ static LIST_HEAD(tfile_check_list);
static long long_zero;
static long long_max = LONG_MAX;
-struct ctl_table epoll_table[] = {
+static struct ctl_table epoll_table[] = {
{
.procname = "max_user_watches",
.data = &max_user_watches,
@@ -311,6 +311,13 @@ struct ctl_table epoll_table[] = {
},
{ }
};
+
+static void __init epoll_sysctls_init(void)
+{
+ register_sysctl_subdir("fs", "epoll", epoll_table);
+}
+#else
+#define epoll_sysctls_init() do { } while (0)
#endif /* CONFIG_SYSCTL */
static const struct file_operations eventpoll_fops;
@@ -2422,6 +2429,7 @@ static int __init eventpoll_init(void)
/* Allocates slab cache used to allocate "struct eppoll_entry" */
pwq_cache = kmem_cache_create("eventpoll_pwq",
sizeof(struct eppoll_entry), 0, SLAB_PANIC|SLAB_ACCOUNT, NULL);
+ epoll_sysctls_init();
return 0;
}
diff --git a/include/linux/poll.h b/include/linux/poll.h
index 1cdc32b1f1b0..a9e0e1c2d1f2 100644
--- a/include/linux/poll.h
+++ b/include/linux/poll.h
@@ -8,12 +8,10 @@
#include <linux/wait.h>
#include <linux/string.h>
#include <linux/fs.h>
-#include <linux/sysctl.h>
#include <linux/uaccess.h>
#include <uapi/linux/poll.h>
#include <uapi/linux/eventpoll.h>
-extern struct ctl_table epoll_table[]; /* for sysctl */
/* ~832 bytes of stack space used max in sys_select/sys_poll before allocating
additional memory. */
#ifdef __clang__
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index aa01f54d0442..e5364b69dd95 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -217,7 +217,6 @@ extern int no_unaligned_warning;
extern struct ctl_table sysctl_mount_point[];
extern struct ctl_table random_table[];
-extern struct ctl_table epoll_table[];
#else /* CONFIG_SYSCTL */
static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index e007375c8a11..5c116904feb7 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -3001,13 +3001,6 @@ static struct ctl_table fs_table[] = {
.proc_handler = proc_dointvec,
},
#endif
-#ifdef CONFIG_EPOLL
- {
- .procname = "epoll",
- .mode = 0555,
- .child = epoll_table,
- },
-#endif
#endif
{
.procname = "protected_symlinks",
--
2.26.2
next prev parent reply other threads:[~2020-05-29 7:41 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 7:40 [Ocfs2-devel] [PATCH 00/13] sysctl: spring cleaning Luis Chamberlain
2020-05-29 7:40 ` [Ocfs2-devel] [PATCH 01/13] sysctl: add new register_sysctl_subdir() helper Luis Chamberlain
2020-05-29 8:13 ` Jani Nikula
2020-05-29 12:16 ` Luis Chamberlain
2020-05-29 12:40 ` Eric W. Biederman
2020-05-29 12:42 ` Eric W. Biederman
2020-05-29 7:40 ` [Ocfs2-devel] [PATCH 02/13] cdrom: use new sysctl subdir helper register_sysctl_subdir() Luis Chamberlain
2020-05-29 12:46 ` Eric W. Biederman
2020-05-29 7:40 ` [Ocfs2-devel] [PATCH 03/13] hpet: " Luis Chamberlain
2020-05-29 7:40 ` [Ocfs2-devel] [PATCH 04/13] i915: " Luis Chamberlain
2020-05-29 7:41 ` [Ocfs2-devel] [PATCH 05/13] macintosh/mac_hid.c: " Luis Chamberlain
2020-05-29 7:41 ` [Ocfs2-devel] [PATCH 06/13] ocfs2: " Luis Chamberlain
2020-05-29 8:23 ` Kees Cook
2020-05-29 11:49 ` [Ocfs2-devel] [Intel-gfx] " Luis Chamberlain
2020-05-29 14:49 ` Kees Cook
2020-05-29 7:41 ` [Ocfs2-devel] [PATCH 07/13] test_sysctl: " Luis Chamberlain
2020-05-29 7:41 ` [Ocfs2-devel] [PATCH 08/13] inotify: simplify sysctl declaration with register_sysctl_subdir() Luis Chamberlain
2020-05-29 7:41 ` [Ocfs2-devel] [PATCH 09/13] firmware_loader: " Luis Chamberlain
2020-05-29 10:26 ` Greg KH
2020-05-29 11:59 ` Xiaoming Ni
2020-05-29 12:09 ` Luis Chamberlain
2020-05-29 7:41 ` Luis Chamberlain [this message]
2020-05-29 7:41 ` [Ocfs2-devel] [PATCH 11/13] random: " Luis Chamberlain
2020-05-29 10:26 ` Greg KH
2020-05-29 12:09 ` Xiaoming Ni
2020-05-29 7:41 ` [Ocfs2-devel] [PATCH 12/13] sysctl: add helper to register empty subdir Luis Chamberlain
2020-05-29 8:15 ` Kees Cook
2020-05-29 13:03 ` Eric W. Biederman
2020-05-29 7:41 ` [Ocfs2-devel] [PATCH 13/13] fs: move binfmt_misc sysctl to its own file Luis Chamberlain
2020-05-29 8:14 ` Kees Cook
2020-06-04 8:45 ` Xiaoming Ni
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