linux-kernel - Re: 2.6.24-rc7-rt1: macro "put_cpu_var" passed 2 arguments, but takes just 1

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Date:	Sun, 13 Jan 2008 15:37:33 -0500 (EST)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mariusz Kozlowski <m.kozlowski@...land.pl>
cc:	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: 2.6.24-rc7-rt1: macro "put_cpu_var" passed 2 arguments, but
 takes just 1



On Sun, 13 Jan 2008, Mariusz Kozlowski wrote:

> [... snip ...]
>
> @@ -56,12 +64,13 @@ static inline void __quicklist_free(int
>         struct page *page)
>  {
>         struct quicklist *q;
> +       int cpu;
>
> -       q = &get_cpu_var(quicklist)[nr];
> +       q = &get_cpu_var_locked(quicklist, &cpu)[nr];
>         *(void **)p = q->page;
>         q->page = p;
>         q->nr_pages++;
> -       put_cpu_var(quicklist);
> +       put_cpu_var(quicklist, cpu); <------------- should that be put_cpu_var_locked()?
>  }
>

Ouch! <looks at rejs>

*************** static inline void __quicklist_free(int
*** 76,86 ****
  		return;
  	}

- 	q = &get_cpu_var(quicklist)[nr];
  	*(void **)p = q->page;
  	q->page = p;
  	q->nr_pages++;
- 	put_cpu_var(quicklist);
  }

  static inline void quicklist_free(int nr, void (*dtor)(void *), void *pp)
--- 73,83 ----
  		return;
  	}

+ 	q = &get_cpu_var_locked(quicklist, &cpu)[nr];
  	*(void **)p = q->page;
  	q->page = p;
  	q->nr_pages++;
+ 	put_cpu_var_locked(quicklist, cpu);
  }

  static inline void quicklist_free(int nr, void (*dtor)(void *), void *pp)
************

Darn, that was my fault. OK, will release a -rt2 soon.

Thanks,

-- Steve

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