Peter Zijlstra aa02cd2d9b xtime_lock vs update_process_times ... Commit d3d74453c3 ("hrtimer: fixup the HRTIMER_CB_IRQSAFE_NO_SOFTIRQ fallback") broke several archs, and since only Russell bothered to merge the fix, and Greg to ACK his arch, I'm sending this for merger. I have confirmation that the Alpha bit results in a booting kernel. That leaves: blackfin, frv, sh and sparc untested. The deadlock in question was found by Russell: IRQ handle -> timer_tick() - xtime seqlock held for write -> update_process_times() -> run_local_timers() -> hrtimer_run_queues() -> hrtimer_get_softirq_time() - tries to get a read lock Now, Thomas assures me the fix is trivial, only do_timer() needs to be done under the xtime_lock, and update_process_times() can savely be removed from under it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Greg Ungerer <gerg@uclinux.org> CC: Richard Henderson <rth@twiddle.net> CC: Bryan Wu <bryan.wu@analog.com> CC: David Howells <dhowells@redhat.com> CC: Paul Mundt <lethal@linux-sh.org> CC: William Irwin <wli@holomorphy.com> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-02-13 13:29:25 -08:00
..
boot	Blackfin arch: add a cheesy install target	2007-10-22 00:45:55 +08:00
configs	[Blackfin] arch: add support for cmdline partitioning to the BF533-STAMP flash map driver and enable it as a module by default	2008-02-09 04:13:15 +08:00
kernel	xtime_lock vs update_process_times	2008-02-13 13:29:25 -08:00
lib	[Blackfin] arch: fix bug - make memcpy return the dest addr.	2007-12-21 21:12:21 +08:00
mach-bf527	[Blackfin] arch: fix build fails only include header files when enabled	2008-02-09 01:49:23 +08:00
mach-bf533	[Blackfin] arch: fix build fails only include header files when enabled	2008-02-09 01:49:23 +08:00
mach-bf537	[Blackfin] arch: Encourage users to use the spidev character driver: Provide platform support	2008-02-09 01:54:09 +08:00
mach-bf548	[Blackfin] arch: fix build fails only include header files when enabled	2008-02-09 01:49:23 +08:00
mach-bf561	[Blackfin] arch: Encourage users to use the spidev character driver: Provide platform support	2008-02-09 01:54:09 +08:00
mach-common	[Blackfin] arch:Fix BUG [#3876] pfbutton test for BTN3 on bf533 don't show complete info	2008-02-02 16:17:52 +08:00
mm	[Blackfin] arch: add "memmap=nn[KMG]@ss[KMG]" and "memmap=nn[KMG]$ss[KMG]" options to blackfin, based on arch/i386/kernel/e820.c	2008-02-09 02:26:01 +08:00
oprofile	Combine instrumentation menus in kernel/Kconfig.instrumentation	2007-10-19 11:53:54 -07:00
Kconfig	ide: introduce HAVE_IDE	2008-02-09 10:46:40 +01:00
Kconfig.debug	[Blackfin] arch: add slightly better help text for CPLB_INFO	2008-02-02 15:32:40 +08:00
Makefile	[Blackfin] arch: declare default INSTALL_PATH for Blackfin ports	2008-02-07 14:15:37 +08:00