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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>		19 years ago
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bcm1480_int.h	…
bcm1480_l2c.h	…
bcm1480_mc.h	…
bcm1480_regs.h	…
bcm1480_scd.h	…
bigsur.h	Support for BigSur board.	19 years ago
board.h	Support for BigSur board.	19 years ago
carmel.h	…
sb1250.h	[MIPS] Sibyte: Fix race in sb1250_gettimeoffset().	19 years ago
sb1250_defs.h	Sibyte header cleanup	19 years ago
sb1250_dma.h	Sibyte header cleanup	19 years ago
sb1250_genbus.h	Sibyte header cleanup	19 years ago
sb1250_int.h	Sibyte header cleanup	19 years ago
sb1250_l2c.h	Sibyte header cleanup	19 years ago
sb1250_ldt.h	Sibyte header cleanup	19 years ago
sb1250_mac.h	Sibyte header cleanup	19 years ago
sb1250_mc.h	Sibyte header cleanup	19 years ago
sb1250_regs.h	Sibyte header cleanup	19 years ago
sb1250_scd.h	[MIPS] Sibyte: Fix M_SCD_TIMER_INIT and M_SCD_TIMER_CNT wrong field width.	19 years ago
sb1250_smbus.h	Sibyte header cleanup	19 years ago
sb1250_syncser.h	Sibyte header cleanup	19 years ago
sb1250_uart.h	Sibyte header cleanup	19 years ago
sentosa.h	…
swarm.h	Sibyte header cleanup	19 years ago
trace_prof.h	…