linux/arch/xtensa/kernel/time.c, branch v3.0.43

xtensa: Switch do_timer() to xtime_update()

2011-01-31T13:55:46Z

xtime_update() takes the xtime_lock itself. set_linux_timer() does not need to be protected by xtime_lock. [ tglx: This code is broken on SMP anyway. ] Signed-off-by: Torben Hohn Cc: Chris Zankel Cc: Peter Zijlstra Cc: johnstul@us.ibm.com Cc: hch@infradead.org Cc: yong.zhang0@gmail.com LKML-Reference: <20110127150027.23248.61798.stgit@localhost> Signed-off-by: Thomas Gleixner

xtensa: Fix unnecessary setting of xtime

2010-03-12T23:36:37Z

xtensa supports read_persisitent_clock(), so there is no reason for the arch specific code to be setting xtime. Setting xtime will be done by the generic timekeeping code. Signed-off-by: John Stultz Cc: Chris Zankel Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner

headers: remove sched.h from interrupt.h

2009-10-11T18:20:58Z

After m68k's task_thread_info() doesn't refer to current, it's possible to remove sched.h from interrupt.h and not break m68k! Many thanks to Heiko Carstens for allowing this. Signed-off-by: Alexey Dobriyan

timekeeping: Increase granularity of read_persistent_clock()

2009-08-15T08:55:46Z

The persistent clock of some architectures (e.g. s390) have a better granularity than seconds. To reduce the delta between the host clock and the guest clock in a virtualized system change the read_persistent_clock function to return a struct timespec. Signed-off-by: Martin Schwidefsky Cc: Ingo Molnar Acked-by: John Stultz Cc: Daniel Walker LKML-Reference: <20090814134811.013873340@de.ibm.com> Signed-off-by: Thomas Gleixner

xtensa: ccount clocksource

2009-04-03T06:45:22Z

Switch to GENERIC_TIME by using the ccount register as a clock source. Signed-off-by: Johannes Weiner Signed-off-by: Chris Zankel

xtensa: remove platform rtc hooks

2009-04-03T06:45:07Z

platform_get/set_rtc_time() is not implemented by any of the supported xtensa platforms. Remove the facility completely. The initial seconds for xtime come from read_persistent_clock() which returns just 0 in the generic implementation. Platforms that sport a persistent clock can implement this function. This is needed to implement the ccount as a clock source. Signed-off-by: Johannes Weiner Signed-off-by: Chris Zankel

xtensa: use generic sched_clock()

2009-04-03T06:44:51Z

Current xtensa implementation of sched_clock() is the same as the generic one. Just remove it, the weak symbol in kernel/sched_clock.c will be used instead. Signed-off-by: Johannes Weiner Signed-off-by: Chris Zankel

calibrate_delay() must be __cpuinit

2008-02-06T18:41:08Z

calibrate_delay() must be __cpuinit, not __{dev,}init. I've verified that this is correct for all users. While doing the latter, I also did the following cleanups: - remove pointless additional prototypes in C files - ensure all users #include This fixes the following section mismatches with CONFIG_HOTPLUG=n, CONFIG_HOTPLUG_CPU=y: WARNING: vmlinux.o(.text+0x1128d): Section mismatch: reference to .init.text.1:calibrate_delay (between 'check_cx686_slop' and 'set_cx86_reorder') WARNING: vmlinux.o(.text+0x25102): Section mismatch: reference to .init.text.1:calibrate_delay (between 'smp_callin' and 'cpu_coregroup_map') Signed-off-by: Adrian Bunk Cc: Ivan Kokshaysky Cc: Richard Henderson Cc: "Luck, Tony" Cc: Ralf Baechle Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: "David S. Miller" Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Christian Zankel Cc: Heiko Carstens Cc: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[XTENSA] Fix timer instabilities.

2007-08-27T20:53:37Z

The timer code could have missed a tick. Signed-off-by: Chris Zankel

[PATCH] Consolidate default sched_clock()

2007-02-11T18:51:28Z

Use attribute(weak). Signed-off-by: Alexey Dobriyan Acked-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds