Ralf Baechle a904f74785 [MIPS] Sibyte: Fix race in sb1250_gettimeoffset(). ... From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>: sb1250_gettimeoffset() simply reads the current cpu 0 timer remaining value, however once this counter reaches 0 and the interrupt is raised, it immediately resets and begins to count down again. If sb1250_gettimeoffset() is called on cpu 1 via do_gettimeofday() after the timer has reset but prior to cpu 0 processing the interrupt and taking write_seqlock() in timer_interrupt() it will return a full value (or close to it) causing time to jump backwards 1ms. Once cpu 0 handles the interrupt and timer_interrupt() gets far enough along it will jump forward 1ms. Fix this problem by implementing mips_hpt_*() on sb1250 using a spare timer unrelated to the existing periodic interrupt timers. It runs at 1Mhz with a full 23bit counter. This eliminated the custom do_gettimeoffset() for sb1250 and allowed use of the generic fixed_rate_gettimeoffset() using mips_hpt_*() and timerhi/timerlo. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2006-03-18 16:59:30 +00:00
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bcm1480	[MIPS] Fix compiler warnings in arch/mips/sibyte/bcm1480/irq.c	2006-02-21 16:58:23 +00:00
cfe	[MIPS] SMP: Fix initialization order bug.	2006-02-27 17:30:36 +00:00
sb1250	[MIPS] Sibyte: Fix race in sb1250_gettimeoffset().	2006-03-18 16:59:30 +00:00
swarm	[MIPS] Sibyte: Fix race in sb1250_gettimeoffset().	2006-03-18 16:59:30 +00:00
Kconfig	[MIPS] Sibyte: Config option names shouldn't be prefixed with CONFIG_	2006-02-21 16:58:23 +00:00