Re: [RFC 08/12] lockdep: Apply crossrelease to PG_locked lock

From	Peter Zijlstra <peterz@infradead.org>
Newsgroups	linux.kernel
Subject	Re: [RFC 08/12] lockdep: Apply crossrelease to PG_locked lock
Date	2016-06-30 15:10 +0200
Message-ID	<rPJTc-1y9-15@gated-at.bofh.it> (permalink)
References	<rLZMR-42g-3@gated-at.bofh.it> <rLZMS-42g-33@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Mon, Jun 20, 2016 at 01:55:23PM +0900, Byungchul Park wrote:
> @@ -215,6 +219,11 @@ struct page {
>  #ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS
>  	int _last_cpupid;
>  #endif
> +
> +#ifdef CONFIG_LOCKDEP_PAGELOCK
> +	struct lockdep_map map;
> +	struct cross_lock xlock;
> +#endif
>  }

So that's 32+64=96 bytes (CONFIG_LOCK_STAT=n) added to struct page,
really!?

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Re: [RFC 08/12] lockdep: Apply crossrelease to PG_locked lock Peter Zijlstra <peterz@infradead.org> - 2016-06-30 15:10 +0200
  Re: [RFC 08/12] lockdep: Apply crossrelease to PG_locked lock Byungchul Park <byungchul.park@lge.com> - 2016-07-01 01:30 +0200
    Re: [RFC 08/12] lockdep: Apply crossrelease to PG_locked lock Peter Zijlstra <peterz@infradead.org> - 2016-07-01 10:20 +0200
    Re: [RFC 08/12] lockdep: Apply crossrelease to PG_locked lock "Kirill A. Shutemov" <kirill@shutemov.name> - 2016-07-01 13:30 +0200
      Re: [RFC 08/12] lockdep: Apply crossrelease to PG_locked lock Byungchul Park <byungchul.park@lge.com> - 2016-07-04 06:40 +0200

csiph-web