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From: Stanislaw Gruszka <sgruszka@redhat.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>, Oleg Nesterov <oleg@redhat.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
	Balbir Singh <balbir@in.ibm.com>,
	linux-kernel@vger.kernel.org,
	Stanislaw Gruszka <sgruszka@redhat.com>
Subject: [PATCH 0/6 -mm] cpu-timers patches
Date: Wed, 20 Jan 2010 13:34:22 +0100	[thread overview]
Message-ID: <1263990868-8119-1-git-send-email-sgruszka@redhat.com> (raw)

Here are patches for cpu-timers I mainly wrote to not call 
thread_group_cputime() in fastpath_timer_check(), which we
discuss in this thread:

http://thread.gmane.org/gmane.linux.kernel/909349/focus=912327
  
On the way I fix some other bugs (SIGEV_NONE timer, old increase value
in timer_settime()) and do other cleanups and optimizations, patch 5
however increase time when sighand->siglock is held. 

Compared with previous send of patches as RFC, I rebased them to -mm
tree, change some changelogs and do some minor code changes.

[PATCH 1/6 -mm] cpu-timers: simplify RLIMIT_CPU handling
[PATCH 2/6 -mm] cpu-timers: cleanup arm_timer()
[PATCH 3/6 -mm] cpu-timers: return correct previous timer reload value
[PATCH 4/6 -mm] cpu-timers: change SIGEV_NONE timer implementation
[PATCH 5/6 -mm] cpu-timers: assure to not iterate over all threads in fastpath_timer_check()
[PATCH 6/6 -mm] cpu-timers: optimize run_posix_cpu_timers()

Cheers
Stanislaw


             reply	other threads:[~2010-01-20 12:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-20 12:34 Stanislaw Gruszka [this message]
2010-01-20 12:34 ` [PATCH 1/6 -mm] cpu-timers: simplify RLIMIT_CPU handling Stanislaw Gruszka
2010-01-20 12:34   ` [PATCH 2/6 -mm] cpu-timers: cleanup arm_timer() Stanislaw Gruszka
2010-01-20 12:34     ` [PATCH 3/6 -mm] cpu-timers: return correct previous timer reload value Stanislaw Gruszka
2010-01-20 12:34       ` [PATCH 4/6 -mm] cpu-timers: change SIGEV_NONE timer implementation Stanislaw Gruszka
2010-01-20 12:34         ` [PATCH 5/6 -mm] cpu-timers: assure to not iterate over all threads in fastpath_timer_check() Stanislaw Gruszka
2010-01-20 12:34           ` [PATCH 6/6 -mm] cpu-timers: optimize run_posix_cpu_timers() Stanislaw Gruszka

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