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From: Alex Dowad <alexinbeijing@gmail.com>
To: linux-kernel@vget.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Oleg Nesterov <oleg@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Rik van Riel <riel@redhat.com>,
	Vladimir Davydov <vdavydov@parallels.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	David Rientjes <rientjes@google.com>,
	Kees Cook <keescook@chromium.org>,
	Aaron Tomlin <atomlin@redhat.com>,
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH 01/32] do_fork(): Rename 'stack_size' argument to reflect actual use
Date: Fri, 13 Mar 2015 20:04:16 +0200	[thread overview]
Message-ID: <1426269888-25600-1-git-send-email-alexinbeijing@gmail.com> (raw)

The 'stack_size' argument is never used to pass a stack size. It's only used when
forking a kernel thread, in which case it is an argument which should be passed
to the 'main' function which the kernel thread executes. Hence, rename it to
'kthread_arg'.

Signed-off-by: Alex Dowad <alexinbeijing@gmail.com>
---

Hi,

The following patches in this series perform a similar cleanup for the arch-specific
implementations of copy_thread(). Each patch has been sent to the maintainers for
the relevant arch.

Thanks, AD

 kernel/fork.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/kernel/fork.c b/kernel/fork.c
index cf65139..5a40dfd 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1186,10 +1186,12 @@ init_task_pid(struct task_struct *task, enum pid_type type, struct pid *pid)
  * It copies the registers, and all the appropriate
  * parts of the process environment (as per the clone
  * flags). The actual kick-off is left to the caller.
  */
 static struct task_struct *copy_process(unsigned long clone_flags,
 					unsigned long stack_start,
-					unsigned long stack_size,
+					unsigned long kthread_arg,
 					int __user *child_tidptr,
 					struct pid *pid,
 					int trace)
@@ -1401,7 +1403,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 	retval = copy_io(clone_flags, p);
 	if (retval)
 		goto bad_fork_cleanup_namespaces;
-	retval = copy_thread(clone_flags, stack_start, stack_size, p);
+	retval = copy_thread(clone_flags, stack_start, kthread_arg, p);
 	if (retval)
 		goto bad_fork_cleanup_io;
 
@@ -1630,7 +1632,7 @@ struct task_struct *fork_idle(int cpu)
  */
 long do_fork(unsigned long clone_flags,
 	      unsigned long stack_start,
-	      unsigned long stack_size,
+	      unsigned long kthread_arg,
 	      int __user *parent_tidptr,
 	      int __user *child_tidptr)
 {
@@ -1656,7 +1658,7 @@ long do_fork(unsigned long clone_flags,
 			trace = 0;
 	}
 
-	p = copy_process(clone_flags, stack_start, stack_size,
+	p = copy_process(clone_flags, stack_start, kthread_arg,
 			 child_tidptr, NULL, trace);
 	/*
 	 * Do this prior waking up the new thread - the thread pointer
@@ -1740,7 +1742,7 @@ SYSCALL_DEFINE5(clone, unsigned long, newsp, unsigned long, clone_flags,
 		 int, tls_val)
 #elif defined(CONFIG_CLONE_BACKWARDS3)
 SYSCALL_DEFINE6(clone, unsigned long, clone_flags, unsigned long, newsp,
-		int, stack_size,
+		int, ignored,
 		int __user *, parent_tidptr,
 		int __user *, child_tidptr,
 		int, tls_val)
-- 
2.0.0.GIT


             reply	other threads:[~2015-03-13 18:05 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-13 18:04 Alex Dowad [this message]
2015-03-13 18:04 ` [PATCH 02/32] alpha: copy_thread(): rename 'arg' argument to 'kthread_arg' Alex Dowad
2015-03-13 18:04 ` [PATCH 03/32] arc: " Alex Dowad
2015-03-25 11:47   ` Vineet Gupta
2015-03-25 12:34     ` Alex Dowad
2015-03-25 12:37       ` Vineet Gupta
2015-03-13 18:04 ` [PATCH 04/32] arm: copy_thread(): rename 'stk_sz' " Alex Dowad
2015-03-13 18:04 ` [PATCH 05/32] arm64: " Alex Dowad
2015-03-13 18:04 ` [PATCH 06/32] avr32: copy_thread(): rename 'arg' " Alex Dowad
2015-03-16  7:03   ` Hans-Christian Egtvedt
2015-03-16  8:18     ` [PATCHv2 " Alex Dowad
2015-03-16  9:52       ` Hans-Christian Egtvedt
2015-03-13 18:04 ` [PATCH 07/32] blackfin: copy_thread(): rename 'topstk' " Alex Dowad
2015-03-13 18:04 ` [PATCH 08/32] c6x: copy_thread(): rename 'ustk_size' " Alex Dowad
2015-03-13 18:04 ` [PATCH 09/32] cris/arch-v10: copy_thread(): rename 'arg' " Alex Dowad
2015-03-25 11:20   ` Jesper Nilsson
2015-03-13 18:04 ` [PATCH 10/32] cris/arch-v32: " Alex Dowad
2015-03-25 11:20   ` Jesper Nilsson
2015-03-13 18:18 ` [PATCH 01/32] do_fork(): Rename 'stack_size' argument to reflect actual use Aaron Tomlin
2015-03-13 23:04 ` josh
2015-03-13 23:21   ` David Rientjes
2015-03-14 17:14     ` Alex Dowad
2015-03-14 16:19   ` Alex Dowad
2015-03-14 17:30     ` Geert Uytterhoeven

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