From: William Lee Irwin III <wli@holomorphy.com>
To: Kirill Korotaev <kksx@mail.ru>
Cc: akpm@osdl.org, torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: [3/7] make do_each_task_pid()/while_each_task_pid() parenthesize their arguments
Date: Wed, 1 Sep 2004 10:30:27 -0700 [thread overview]
Message-ID: <20040901173027.GG5492@holomorphy.com> (raw)
In-Reply-To: <20040901172839.GF5492@holomorphy.com>
On Wed, Sep 01, 2004 at 10:28:39AM -0700, William Lee Irwin III wrote:
> do { ... } while () -like constructs require semicolons to follow them.
> This patch arranges for do_each_task_pid() { ... } while_each_task_pid()
> to do likewise.
Macros must parenthesize their arguments when they appear as
expressions not surrounded by other bracketing symbols. This patch
parenthesizes the task argument to do_each_task_pid() and
while_each_task_pid() where needed. This kind of iteration macro
doesn't need multiple evaluation fixes.
Index: kirill-2.6.9-rc1-mm2/include/linux/pid.h
===================================================================
--- kirill-2.6.9-rc1-mm2.orig/include/linux/pid.h 2004-09-01 09:01:13.653422464 -0700
+++ kirill-2.6.9-rc1-mm2/include/linux/pid.h 2004-09-01 09:07:48.266432168 -0700
@@ -43,14 +43,14 @@
#define do_each_task_pid(who, type, task) \
do { \
if ((task = find_task_by_pid_type(type, who))) { \
- prefetch(task->pids[type].pid_list.next); \
+ prefetch((task)->pids[type].pid_list.next); \
do {
#define while_each_task_pid(who, type, task) \
- task = pid_task(task->pids[type].pid_list.next, \
+ task = pid_task((task)->pids[type].pid_list.next,\
type); \
- prefetch(task->pids[type].pid_list.next); \
- } while (task->pids[type].hash_list.next); \
+ prefetch((task)->pids[type].pid_list.next); \
+ } while ((task)->pids[type].hash_list.next); \
} \
} while (0)
next prev parent reply other threads:[~2004-09-01 17:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-01 11:46 [PATCH] obscure pid implementation fix (v2) Kirill Korotaev
2004-09-01 15:36 ` William Lee Irwin III
2004-09-01 15:38 ` William Lee Irwin III
2004-09-01 16:58 ` William Lee Irwin III
2004-09-01 17:27 ` [1/7] make do_each_task_pid()/while_each_task_pid() typecheck William Lee Irwin III
2004-09-01 17:28 ` [2/7] make do_each_task_pid()/while_each_task_pid() require a semicolon following them William Lee Irwin III
2004-09-01 17:30 ` William Lee Irwin III [this message]
2004-09-01 17:32 ` [4/7] fix loop termination condition in do_each_task_pid()/while_each_task_pid() William Lee Irwin III
2004-09-01 17:33 ` [5/7] back out renaming of struct pid William Lee Irwin III
2004-09-01 17:35 ` [6/7] back out renaming of ->pid_chain William Lee Irwin III
2004-09-01 17:37 ` [7/7] remove casting of __detach_pid() results to void William Lee Irwin III
2004-09-01 17:48 ` [1/7] make do_each_task_pid()/while_each_task_pid() typecheck Linus Torvalds
2004-09-01 17:59 ` [1/1] rework of Kirill Korotaev's pidhashing patch William Lee Irwin III
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