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* xtensa: add SMP supportMax Filippov2014-01-141-12/+2Star
| | | | | | | | | 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 <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: remove CCOUNT_PER_JIFFYBaruch Siach2013-09-061-1/+0Star
| | | | | | | | Use ccount_freq directly to make the code a little more readable. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: fix !CONFIG_XTENSA_CALIBRATE_CCOUNT build failureBaruch Siach2013-09-061-5/+0Star
| | | | | | | | | | | | 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 <gang.chen@asianux.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: cleanup ccount frequency trackingBaruch Siach2013-07-081-3/+2Star
| | | | | | | Remove unused nsec_per_ccount, and rename ccount_per_jiffy to ccount_preq. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: timex.h: remove unused symbolsBaruch Siach2013-07-081-7/+0Star
| | | | | Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: don't attempt to use unconfigured timersMax Filippov2013-05-091-3/+6
| | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: dispatch medium-priority interruptsMarc Gauthier2013-02-241-4/+4
| | | | | | | | | | 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 <marc@tensilica.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: reorganize SR referencingMax Filippov2012-10-161-4/+4
| | | | | | | | | | - reference SRs by names where possible, not by numbers; - get rid of __stringify around SR names where possible; - remove unneeded SR names from asm/regs.h; - add SREG_ prefix to remaining SR names; Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: fix wrong extern declaration renamed in code using itOskar Schirmer2009-05-121-2/+2
| | | | | | | | | | The variable ccount_nsec has been renamed to nsec_per_ccount in arch/xtensa/kernel/time.c in 2b8aea74 (2007-08-05), but the fix failed to rename the variable in arch/xtensa/include/asm/timex.h as well. Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Chris Zankel <chris@zankel.net>
* xtensa: move headers files to arch/xtensa/includeChris Zankel2008-11-061-0/+96
Move all header files for xtensa to arch/xtensa/include and platform and variant header files to the appropriate arch/xtensa/platforms/ and arch/xtensa/variants/ directories. Moving the files gets also rid of all uses of symlinks in the Makefile. This has been completed already for the majority of the architectures and xtensa is one out of six missing. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Chris Zankel <chris@zankel.net>
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