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Message-Id: <11769696211263-git-send-email-ebiederm@xmission.com>
Date: Thu, 19 Apr 2007 01:58:56 -0600
From: "Eric W. Biederman" <ebiederm@...ssion.com>
To: "<Andrew Morton" <akpm@...l.org>
Cc: <containers@...ts.osdl.org>, Oleg Nesterov <oleg@...sign.ru>,
Christoph Hellwig <hch@...radead.org>,
<linux-kernel@...r.kernel.org>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
David Howells <dhowells@...hat.com>
Subject: [PATCH] net/rxrpc: Convert to kthread API.
From: Eric W. Biederman <ebiederm@...ssion.com>
This patch modifies the startup of krxtimod, krxiod, and krxsecd
to use kthread_run instead of a combination of kernel_thread
and daemonize making the code slightly simpler and more maintainable.
In addition since by default all signals are ignored when delivered
to a kernel thread the code to flush signals has been removed.
Cc: David Howells <dhowells@...hat.com>
Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
---
net/rxrpc/internal.h | 11 -----------
net/rxrpc/krxiod.c | 16 ++++++++--------
net/rxrpc/krxsecd.c | 16 ++++++++--------
net/rxrpc/krxtimod.c | 15 ++++++---------
4 files changed, 22 insertions(+), 36 deletions(-)
diff --git a/net/rxrpc/internal.h b/net/rxrpc/internal.h
index cc0c579..1dd69aa 100644
--- a/net/rxrpc/internal.h
+++ b/net/rxrpc/internal.h
@@ -49,17 +49,6 @@ __RXACCT_DECL(extern atomic_t rxrpc_message_count);
#define _net(FMT, a...) do { if (rxrpc_knet) knet (FMT , ##a); } while(0)
#endif
-static inline void rxrpc_discard_my_signals(void)
-{
- while (signal_pending(current)) {
- siginfo_t sinfo;
-
- spin_lock_irq(¤t->sighand->siglock);
- dequeue_signal(current, ¤t->blocked, &sinfo);
- spin_unlock_irq(¤t->sighand->siglock);
- }
-}
-
/*
* call.c
*/
diff --git a/net/rxrpc/krxiod.c b/net/rxrpc/krxiod.c
index bbbcd6c..c590ccd 100644
--- a/net/rxrpc/krxiod.c
+++ b/net/rxrpc/krxiod.c
@@ -14,6 +14,7 @@
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/freezer.h>
+#include <linux/kthread.h>
#include <rxrpc/krxiod.h>
#include <rxrpc/transport.h>
#include <rxrpc/peer.h>
@@ -43,8 +44,6 @@ static int rxrpc_krxiod(void *arg)
printk("Started krxiod %d\n",current->pid);
- daemonize("krxiod");
-
/* loop around waiting for work to do */
do {
/* wait for work or to be told to exit */
@@ -57,8 +56,7 @@ static int rxrpc_krxiod(void *arg)
for (;;) {
set_current_state(TASK_INTERRUPTIBLE);
if (atomic_read(&rxrpc_krxiod_qcount) ||
- rxrpc_krxiod_die ||
- signal_pending(current))
+ rxrpc_krxiod_die)
break;
schedule();
@@ -141,9 +139,6 @@ static int rxrpc_krxiod(void *arg)
try_to_freeze();
- /* discard pending signals */
- rxrpc_discard_my_signals();
-
} while (!rxrpc_krxiod_die);
/* and that's all */
@@ -157,7 +152,12 @@ static int rxrpc_krxiod(void *arg)
*/
int __init rxrpc_krxiod_init(void)
{
- return kernel_thread(rxrpc_krxiod, NULL, 0);
+ struct task_struct *task;
+ int ret = 0;
+ task = kthread_run(rxrpc_krxiod, NULL, "krxiod");
+ if (IS_ERR(task))
+ ret = PTR_ERR(task);
+ return ret;
} /* end rxrpc_krxiod_init() */
diff --git a/net/rxrpc/krxsecd.c b/net/rxrpc/krxsecd.c
index 9a1e7f5..150cd39 100644
--- a/net/rxrpc/krxsecd.c
+++ b/net/rxrpc/krxsecd.c
@@ -19,6 +19,7 @@
#include <linux/completion.h>
#include <linux/spinlock.h>
#include <linux/init.h>
+#include <linux/kthread.h>
#include <rxrpc/krxsecd.h>
#include <rxrpc/transport.h>
#include <rxrpc/connection.h>
@@ -56,8 +57,6 @@ static int rxrpc_krxsecd(void *arg)
printk("Started krxsecd %d\n", current->pid);
- daemonize("krxsecd");
-
/* loop around waiting for work to do */
do {
/* wait for work or to be told to exit */
@@ -70,8 +69,7 @@ static int rxrpc_krxsecd(void *arg)
for (;;) {
set_current_state(TASK_INTERRUPTIBLE);
if (atomic_read(&rxrpc_krxsecd_qcount) ||
- rxrpc_krxsecd_die ||
- signal_pending(current))
+ rxrpc_krxsecd_die)
break;
schedule();
@@ -110,9 +108,6 @@ static int rxrpc_krxsecd(void *arg)
try_to_freeze();
- /* discard pending signals */
- rxrpc_discard_my_signals();
-
} while (!die);
/* and that's all */
@@ -126,7 +121,12 @@ static int rxrpc_krxsecd(void *arg)
*/
int __init rxrpc_krxsecd_init(void)
{
- return kernel_thread(rxrpc_krxsecd, NULL, 0);
+ struct task_struct *task;
+ int ret = 0;
+ task = kthread_run(rxrpc_krxsecd, NULL, "krxsecd");
+ if (IS_ERR(task))
+ ret = PTR_ERR(task);
+ return ret;
} /* end rxrpc_krxsecd_init() */
diff --git a/net/rxrpc/krxtimod.c b/net/rxrpc/krxtimod.c
index 9a9b613..3b5f062 100644
--- a/net/rxrpc/krxtimod.c
+++ b/net/rxrpc/krxtimod.c
@@ -14,6 +14,7 @@
#include <linux/sched.h>
#include <linux/completion.h>
#include <linux/freezer.h>
+#include <linux/kthread.h>
#include <rxrpc/rxrpc.h>
#include <rxrpc/krxtimod.h>
#include <asm/errno.h>
@@ -35,11 +36,12 @@ static int krxtimod(void *arg);
*/
int rxrpc_krxtimod_start(void)
{
- int ret;
+ struct task_struct *task;
+ int ret = 0;
- ret = kernel_thread(krxtimod, NULL, 0);
- if (ret < 0)
- return ret;
+ task = kthread_run(krxtimod, NULL, "krxtimod");
+ if (IS_ERR(task))
+ ret = PTR_ERR(task);
wait_for_completion(&krxtimod_alive);
@@ -71,8 +73,6 @@ static int krxtimod(void *arg)
printk("Started krxtimod %d\n", current->pid);
- daemonize("krxtimod");
-
complete(&krxtimod_alive);
/* loop around looking for things to attend to */
@@ -93,9 +93,6 @@ static int krxtimod(void *arg)
try_to_freeze();
- /* discard pending signals */
- rxrpc_discard_my_signals();
-
/* work out the time to elapse before the next event */
spin_lock(&krxtimod_lock);
if (list_empty(&krxtimod_list)) {
--
1.5.0.g53756
-
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