linux-kernel - Re: [PATCH] Remove write-only variable from pktgen

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Message-ID: <20070829213356.GC18542@us.ibm.com>
Date:	Wed, 29 Aug 2007 14:33:56 -0700
From:	sukadev@...ibm.com
To:	Pavel Emelyanov <xemul@...nvz.org>
Cc:	Andrew Morton <akpm@...l.org>, Oleg Nesterov <oleg@...sign.ru>,
	Linux Containers <containers@...ts.osdl.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH] Remove write-only variable from pktgen_thread

Pavel Emelianov [xemul@...nvz.org] wrote:
| The pktgen_thread.pid is set to current->pid and is never used
| after this. So remove this at all.
| 
| Found during isolating the explicit pid/tgid usage.
| 
| Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>

Good observation that its not being used :-)

Acked-by: Sukadev Bhattiprolu <sukadev@...ibm.com>
| 
| ---
| 
| diff --git a/net/core/pktgen.c b/net/core/pktgen.c
| index 3a3154e..93695c2 100644
| --- a/net/core/pktgen.c
| +++ b/net/core/pktgen.c
| @@ -380,7 +380,6 @@ struct pktgen_thread {
| 	/* Field for thread to receive "posted" events terminate, stop ifs 
| 	etc. */
| 
| 	u32 control;
| -	int pid;
| 	int cpu;
| 
| 	wait_queue_head_t queue;
| @@ -3462,8 +3461,6 @@ static int pktgen_thread_worker(void *ar
| 
| 	init_waitqueue_head(&t->queue);
| 
| -	t->pid = current->pid;
| -
| 	pr_debug("pktgen: starting pktgen/%d:  pid=%d\n", cpu, 
| 	task_pid_nr(current));
| 
| 	max_before_softirq = t->max_before_softirq;
-
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