kernel/arch/xtensa/include/asm/timex.h, branch linux-rolling-stable

xtensa: use fallback for random_get_entropy() instead of zero

2022-05-30T07:27:15Z

commit e10e2f58030c5c211d49042a8c2a1b93d40b2ffb upstream. In the event that random_get_entropy() can't access a cycle counter or similar, falling back to returning 0 is really not the best we can do. Instead, at least calling random_get_entropy_fallback() would be preferable, because that always needs to return _something_, even falling back to jiffies eventually. It's not as though random_get_entropy_fallback() is super high precision or guaranteed to be entropic, but basically anything that's not zero all the time is better than returning zero all the time. This is accomplished by just including the asm-generic code like on other architectures, which means we can get rid of the empty stub function here. Cc: Thomas Gleixner Cc: Arnd Bergmann Acked-by: Max Filippov Signed-off-by: Jason A. Donenfeld Signed-off-by: Greg Kroah-Hartman

xtensa: clean up WSR/RSR/get_sr/set_sr

2018-12-04T22:08:11Z

WSR and RSR are too generic and collide with other macro definitions in the kernel causing warnings in allmodconfig builds. Drop WSR and RSR macros and WSR_* and RSR_* variants. Change get_sr and set_sr to xtensa_get_sr and xtensa_set_sr. Fix up users. Signed-off-by: Max Filippov

xtensa: use XTENSA_INT_LEVEL macro in asm/timex.h

2016-01-11T14:32:40Z

Signed-off-by: Max Filippov

xtensa: add SMP support

2014-01-14T18:19:58Z

This is largely based on SMP code from the xtensa-2.6.29-smp tree by Piet Delaney, Marc Gauthier, Joe Taylor, Christian Zankel (and possibly other Tensilica folks). Signed-off-by: Max Filippov Signed-off-by: Chris Zankel

xtensa: remove CCOUNT_PER_JIFFY

2013-09-06T16:48:59Z

Use ccount_freq directly to make the code a little more readable. Signed-off-by: Baruch Siach Signed-off-by: Max Filippov Signed-off-by: Chris Zankel

xtensa: fix !CONFIG_XTENSA_CALIBRATE_CCOUNT build failure

2013-09-06T16:48:51Z

Commits 925f5532 (xtensa: ccount based clockevent implementation) and e3f43291 (xtensa: ccount based sched_clock) introduced users of ccount_freq. This variable doesn't exist when CONFIG_XTENSA_CALIBRATE_CCOUNT is disabled. Add ccount_freq definition in this case. Reported-by: Chen Gang Signed-off-by: Baruch Siach Signed-off-by: Max Filippov Signed-off-by: Chris Zankel

xtensa: cleanup ccount frequency tracking

2013-07-08T08:11:37Z

Remove unused nsec_per_ccount, and rename ccount_per_jiffy to ccount_preq. Signed-off-by: Baruch Siach Signed-off-by: Chris Zankel

xtensa: timex.h: remove unused symbols

2013-07-08T08:11:36Z

Signed-off-by: Baruch Siach Signed-off-by: Chris Zankel

xtensa: don't attempt to use unconfigured timers

2013-05-09T08:07:10Z

Signed-off-by: Max Filippov Signed-off-by: Chris Zankel

xtensa: dispatch medium-priority interrupts

2013-02-24T03:12:52Z

Add support for dispatching medium-priority interrupts, that is, interrupts of priority levels 2 to EXCM_LEVEL. IRQ handling may be preempted by higher priority IRQ. Signed-off-by: Marc Gauthier Signed-off-by: Max Filippov Signed-off-by: Chris Zankel