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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>		17 years ago
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boot	…
kernel	xtime_lock vs update_process_times	17 years ago
lib	[SPARC/SPARC64]: Fix usage of .section .sched.text in assembler code.	17 years ago
math-emu	…
mm	CONFIG_HIGHPTE vs. sub-page page tables.	17 years ago
oprofile	Combine instrumentation menus in kernel/Kconfig.instrumentation	18 years ago
prom	…
Kconfig	ide: introduce HAVE_IDE	17 years ago
Kconfig.debug	[SPARC32]: Add irqflags.h to sparc32 and use it from generic code.	18 years ago
Makefile	kbuild: enable 'make AFLAGS=...' to add additional options to AS	18 years ago
defconfig	…