Messages in this thread | | | Date | Thu, 24 Aug 2006 11:30:09 +0200 (CEST) | From | Geert Uytterhoeven <> | Subject | Re: [Devel] [PATCH 6/6] BC: kernel memory accounting (marks) |
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On Wed, 23 Aug 2006, Dave Hansen wrote: > I'm working on a patch to unify as many of the alloc_thread_info() > functions as I can. That should at least give you one place to modify > and track the thread_info allocations. I've only compiled for x86_64 > and i386, but I'm working on more. A preliminary version is attached.
> --- clean/include/asm-m68k/thread_info.h~unify-alloc-thread-info 2006-08-23 15:44:52.000000000 -0700 > +++ clean-dave/include/asm-m68k/thread_info.h 2006-08-23 15:45:32.000000000 -0700 > @@ -24,14 +24,7 @@ struct thread_info { > }, \ > } > > -/* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */ > -#if PAGE_SHIFT == 13 /* 8k machines */ > -#define alloc_thread_info(tsk) ((struct thread_info *)__get_free_pages(GFP_KERNEL,0)) > -#define free_thread_info(ti) free_pages((unsigned long)(ti),0) > -#else /* otherwise assume 4k pages */ > -#define alloc_thread_info(tsk) ((struct thread_info *)__get_free_pages(GFP_KERNEL,1)) > -#define free_thread_info(ti) free_pages((unsigned long)(ti),1) > -#endif /* PAGE_SHIFT == 13 */ > +#define THREAD_SHIFT 1 ^ Shouldn't this be 13?
> --- /dev/null 2005-03-30 22:36:15.000000000 -0800 > +++ clean-dave/include/linux/thread_alloc.h 2006-08-23 16:00:41.000000000 -0700 > @@ -0,0 +1,42 @@ > +#ifndef _LINUX_THREAD_ALLOC > +#define _LINUX_THREAD_ALLOC > + > +#ifndef THREAD_SHIFT > +#define THREAD_SHIFT PAGE_SHIFT > +#endif > +#ifndef THREAD_ORDER > +#define THREAD_ORDER (THREAD_SHIFT - PAGE_SHIFT) > +#endif > + > +struct thread_info; > +struct task; > + > +#if THREAD_SHIFT >= PAGE_SHIFT > +static inline struct thread_info *alloc_thread_info(struct task_struct *tsk) > +{ > + gfp_t flags = GFP_KERNEL; > +#ifdef CONFIG_DEBUG_STACK_USAGE > + flags |= __GFP_ZERO; > +#endif > + return (struct thread_info *)__get_free_pages(flags, THREAD_ORDER); > +} > +static inline void free_thread_info(struct thread_info *ti) > +{ > + free_pages((unsigned long)ti, THREAD_ORDER); > +} > +#else /* THREAD_SHIFT < PAGE_SHIFT */ > +static inline struct thread_info *alloc_thread_info(struct task_struct *tsk) > +{ > +#ifdef CONFIG_DEBUG_STACK_USAGE > + return kzalloc(THREAD_SIZE, GFP_KERNEL); > +#else > + return kmalloc(THREAD_SIZE, GFP_KERNEL); > +#endif > +} > +static inline void free_thread_info(struct thread_info *ti) > +{ > + kfree(ti); > +} > +#endif /* THREAD_SHIFT < PAGE_SHIFT */ > + > +#endif /* _LINUX_THREAD_ALLOC */
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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