• Atsushi Nemoto's avatar
    [PATCH] simplify update_times (avoid jiffies/jiffies_64 aliasing problem) · 3171a030
    Atsushi Nemoto authored
    Pass ticks to do_timer() and update_times(), and adjust x86_64 and s390
    timer interrupt handler with this change.
    
    Currently update_times() calculates ticks by "jiffies - wall_jiffies", but
    callers of do_timer() should know how many ticks to update.  Passing ticks
    get rid of this redundant calculation.  Also there are another redundancy
    pointed out by Martin Schwidefsky.
    
    This cleanup make a barrier added by
    5aee405c
    
     needless.  So this patch removes
    it.
    
    As a bonus, this cleanup make wall_jiffies can be removed easily, since now
    wall_jiffies is always synced with jiffies.  (This patch does not really
    remove wall_jiffies.  It would be another cleanup patch)
    Signed-off-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: "Eric W. Biederman" <ebiederm@xmission.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: john stultz <johnstul@us.ibm.com>
    Cc: Andi Kleen <ak@muc.de>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: Richard Henderson <rth@twiddle.net>
    Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
    Acked-by: default avatarRussell King <rmk@arm.linux.org.uk>
    Cc: Ian Molton <spyro@f2s.com>
    Cc: Mikael Starvik <starvik@axis.com>
    Acked-by: default avatarDavid Howells <dhowells@redhat.com>
    Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
    Cc: Hirokazu Takata <takata.hirokazu@renesas.com>
    Acked-by: default avatarRalf Baechle <ralf@linux-mips.org>
    Cc: Kyle McMartin <kyle@mcmartin.ca>
    Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Paul Mundt <lethal@linux-sh.org>
    Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
    Cc: Richard Curnow <rc@rc0.org.uk>
    Cc: William Lee Irwin III <wli@holomorphy.com>
    Cc: "David S. Miller" <davem@davemloft.net>
    Cc: Jeff Dike <jdike@addtoit.com>
    Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
    Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
    Cc: Chris Zankel <chris@zankel.net>
    Acked-by: default avatar"Luck, Tony" <tony.luck@intel.com>
    Cc: Geert Uytterhoeven <geert@linux-m68k.org>
    Cc: Roman Zippel <zippel@linux-m68k.org>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    3171a030