linux-kernel - Re: [PATCH] softirq: Fix softirq_to

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Message-ID: <20090917104747.GG23126@kernel.dk>
Date:	Thu, 17 Sep 2009 12:47:47 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] softirq: Fix softirq_to_name

On Thu, Sep 17 2009, Li Zefan wrote:
> With BLOCK_IOPOLL_SOFTIRQ added, softirq_to_name[] and
> show_softirq_name() needs to be updated.

Indeed, thanks!

> 
> Signed-off-by: Li Zefan <lizf@...fujitsu.com>
> ---
> 
> We can automatically generate softirq_to_name[] and
> show_softirq_name(), but since it's rare to add new softirq,
> I decide to just add the missing one.
> 
> ---
>  include/trace/events/irq.h |   21 +++++++++++----------
>  kernel/softirq.c           |    2 +-
>  2 files changed, 12 insertions(+), 11 deletions(-)
> 
> diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h
> index 1cb0c3a..b89f9db 100644
> --- a/include/trace/events/irq.h
> +++ b/include/trace/events/irq.h
> @@ -8,16 +8,17 @@
>  #include <linux/interrupt.h>
>  
>  #define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
> -#define show_softirq_name(val)			\
> -	__print_symbolic(val,			\
> -			 softirq_name(HI),	\
> -			 softirq_name(TIMER),	\
> -			 softirq_name(NET_TX),	\
> -			 softirq_name(NET_RX),	\
> -			 softirq_name(BLOCK),	\
> -			 softirq_name(TASKLET),	\
> -			 softirq_name(SCHED),	\
> -			 softirq_name(HRTIMER),	\
> +#define show_softirq_name(val)				\
> +	__print_symbolic(val,				\
> +			 softirq_name(HI),		\
> +			 softirq_name(TIMER),		\
> +			 softirq_name(NET_TX),		\
> +			 softirq_name(NET_RX),		\
> +			 softirq_name(BLOCK),		\
> +			 softirq_name(BLOCK_IOPOLL),	\
> +			 softirq_name(TASKLET),		\
> +			 softirq_name(SCHED),		\
> +			 softirq_name(HRTIMER),		\
>  			 softirq_name(RCU))
>  
>  /**
> diff --git a/kernel/softirq.c b/kernel/softirq.c
> index 7db2506..f8749e5 100644
> --- a/kernel/softirq.c
> +++ b/kernel/softirq.c
> @@ -57,7 +57,7 @@ static struct softirq_action softirq_vec[NR_SOFTIRQS] __cacheline_aligned_in_smp
>  static DEFINE_PER_CPU(struct task_struct *, ksoftirqd);
>  
>  char *softirq_to_name[NR_SOFTIRQS] = {
> -	"HI", "TIMER", "NET_TX", "NET_RX", "BLOCK",
> +	"HI", "TIMER", "NET_TX", "NET_RX", "BLOCK", "BLOCK_IOPOLL",
>  	"TASKLET", "SCHED", "HRTIMER",	"RCU"
>  };
>  
> -- 
> 1.6.3
> 

-- 
Jens Axboe

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