user/sven/linux.git/include/linux/jiffies.h, branch v4.9.139

time: Introduce jiffies64_to_nsecs()

2018-10-10T06:53:18Z

commit 07e5f5e353aaa61696c8353d87050994a0c4648a upstream. This will be needed for the cputime_t to nsec conversion. Signed-off-by: Frederic Weisbecker Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Tony Luck Cc: Fenghua Yu Cc: Peter Zijlstra Cc: Rik van Riel Cc: Stanislaw Gruszka Cc: Wanpeng Li Link: http://lkml.kernel.org/r/1485832191-26889-2-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar Signed-off-by: Ivan Delalande Signed-off-by: Greg Kroah-Hartman

frv: declare jiffies to be located in the .data section

2018-04-08T10:12:45Z

commit 60b0a8c3d2480f3b57282b47b7cae7ee71c48635 upstream. Commit 7c30f352c852 ("jiffies.h: declare jiffies and jiffies_64 with ____cacheline_aligned_in_smp") removed a section specification from the jiffies declaration that caused conflicts on some platforms. Unfortunately this change broke the build for frv: kernel/built-in.o: In function `__do_softirq': (.text+0x6460): relocation truncated to fit: R_FRV_GPREL12 against symbol `jiffies' defined in *ABS* section in .tmp_vmlinux1 kernel/built-in.o: In function `__do_softirq': (.text+0x6574): relocation truncated to fit: R_FRV_GPREL12 against symbol `jiffies' defined in *ABS* section in .tmp_vmlinux1 kernel/built-in.o: In function `pwq_activate_delayed_work': workqueue.c:(.text+0x15b9c): relocation truncated to fit: R_FRV_GPREL12 against symbol `jiffies' defined in *ABS* section in .tmp_vmlinux1 ... Add __jiffy_arch_data to the declaration of jiffies and use it on frv to include the section specification. For all other platforms __jiffy_arch_data (currently) has no effect. Fixes: 7c30f352c852 ("jiffies.h: declare jiffies and jiffies_64 with ____cacheline_aligned_in_smp") Link: http://lkml.kernel.org/r/20170516221333.177280-1-mka@chromium.org Signed-off-by: Matthias Kaehlcke Reported-by: Guenter Roeck Tested-by: Guenter Roeck Reviewed-by: David Howells Cc: Sudip Mukherjee Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

jiffies.h: declare jiffies and jiffies_64 with ____cacheline_aligned_in_smp

2018-04-08T10:12:45Z

commit 7c30f352c852bae2715ad65ac4a38ca9af7d7696 upstream. jiffies_64 is defined in kernel/time/timer.c with ____cacheline_aligned_in_smp, however this macro is not part of the declaration of jiffies and jiffies_64 in jiffies.h. As a result clang generates the following warning: kernel/time/timer.c:57:26: error: section does not match previous declaration [-Werror,-Wsection] __visible u64 jiffies_64 __cacheline_aligned_in_smp = INITIAL_JIFFIES; ^ include/linux/cache.h:39:36: note: expanded from macro '__cacheline_aligned_in_smp' ^ include/linux/cache.h:34:4: note: expanded from macro '__cacheline_aligned' __section__(".data..cacheline_aligned"))) ^ include/linux/jiffies.h:77:12: note: previous attribute is here extern u64 __jiffy_data jiffies_64; ^ include/linux/jiffies.h:70:38: note: expanded from macro '__jiffy_data' Link: http://lkml.kernel.org/r/20170403190200.70273-1-mka@chromium.org Signed-off-by: Matthias Kaehlcke Cc: "Jason A . Donenfeld" Cc: Grant Grundler Cc: Michael Davidson Cc: Greg Hackmann Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Cc: Nathan Chancellor Signed-off-by: Greg Kroah-Hartman

jiffies: add time comparison functions for 64 bit jiffies

2016-10-08T01:46:26Z

Though the time_before and time_after family of functions were nicely extended to support jiffies64, so that the interface would be consistent, it was forgotten to also extend the before/after jiffies functions to support jiffies64. This commit brings the interface to parity between jiffies and jiffies64, which is quite convenient. Link: http://lkml.kernel.org/r/20160929033319.12188-1-Jason@zx2c4.com Signed-off-by: Jason A. Donenfeld Cc: Thomas Gleixner Cc: John Stultz Signed-off-by: Linus Torvalds

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-09-01T21:04:50Z

Pull timer updates from Thomas Gleixner: "Rather large, but nothing exiting: - new range check for settimeofday() to prevent that boot time becomes negative. - fix for file time rounding - a few simplifications of the hrtimer code - fix for the proc/timerlist code so the output of clock realtime timers is accurate - more y2038 work - tree wide conversion of clockevent drivers to the new callbacks" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (88 commits) hrtimer: Handle failure of tick_init_highres() gracefully hrtimer: Unconfuse switch_hrtimer_base() a bit hrtimer: Simplify get_target_base() by returning current base hrtimer: Drop return code of hrtimer_switch_to_hres() time: Introduce timespec64_to_jiffies()/jiffies_to_timespec64() time: Introduce current_kernel_time64() time: Introduce struct itimerspec64 time: Add the common weak version of update_persistent_clock() time: Always make sure wall_to_monotonic isn't positive time: Fix nanosecond file time rounding in timespec_trunc() timer_list: Add the base offset so remaining nsecs are accurate for non monotonic timers cris/time: Migrate to new 'set-state' interface kernel: broadcast-hrtimer: Migrate to new 'set-state' interface xtensa/time: Migrate to new 'set-state' interface unicore/time: Migrate to new 'set-state' interface um/time: Migrate to new 'set-state' interface sparc/time: Migrate to new 'set-state' interface sh/localtimer: Migrate to new 'set-state' interface score/time: Migrate to new 'set-state' interface s390/time: Migrate to new 'set-state' interface ...

Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-09-01T04:04:24Z

Pull NOHZ updates from Ingo Molnar: "The main changes, mostly written by Frederic Weisbecker, include: - Fix some jiffies based cputime assumptions. (No real harm because the concerned code isn't used by full dynticks.) - Simplify jiffies <-> usecs conversions. Remove dead code. - Remove early hacks on nohz full code that avoided messing up idle nohz internals. Now nohz integrates well full and idle and such hack have become needless. - Restart nohz full tick from irq exit. (A simplification and a preparation for future optimization on scheduler kick to nohz full) - Code cleanups. - Tile driver isolation enhancement on top of nohz. (Chris Metcalf)" * 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: nohz: Remove useless argument on tick_nohz_task_switch() nohz: Move tick_nohz_restart_sched_tick() above its users nohz: Restart nohz full tick from irq exit nohz: Remove idle task special case nohz: Prevent tilegx network driver interrupts alpha: Fix jiffies based cputime assumption apm32: Fix cputime == jiffies assumption jiffies: Remove HZ > USEC_PER_SEC special case

time: Introduce timespec64_to_jiffies()/jiffies_to_timespec64()

2015-08-17T18:25:41Z

The conversion between struct timespec and jiffies is not year 2038 safe on 32bit systems. Introduce timespec64_to_jiffies() and jiffies_to_timespec64() functions which use struct timespec64 to make it ready for 2038 issue. Cc: Prarit Bhargava Cc: Richard Cochran Cc: Ingo Molnar Cc: Thomas Gleixner Signed-off-by: Baolin Wang Signed-off-by: John Stultz

jiffies: Force inlining of {m,u}msecs_to_jiffies()

2015-08-05T07:38:09Z

With this config: http://busybox.net/~vda/kernel_config_OPTIMIZE_INLINING_and_Os gcc-4.7.2 generates many copies of these tiny functions: msecs_to_jiffies (45 copies): 55 push %rbp 48 89 e5 mov %rsp,%rbp e8 59 ec 03 00 callq __msecs_to_jiffies 5d pop %rbp c3 retq usecs_to_jiffies (10 copies): 55 push %rbp 48 89 e5 mov %rsp,%rbp e8 5d 54 5e ff callq __usecs_to_jiffies 5d pop %rbp c3 retq See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66122 This patch fixes this via s/inline/__always_inline/ text data bss dec filename 86970954 17195912 36659200 140826066 vmlinux.before 86966150 17195912 36659200 140821262 vmlinux Signed-off-by: Denys Vlasenko Cc: Andrew Morton Cc: David Rientjes Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Thomas Graf Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/1438697716-28121-3-git-send-email-dvlasenk@redhat.com Signed-off-by: Ingo Molnar

jiffies: Remove HZ > USEC_PER_SEC special case

2015-07-29T13:44:57Z

HZ never goes much further 1000 and a bit. And if we ever reach one tick per microsecond, we might be having a problem. Lets stop maintaining this special case, just leave a paranoid check. Reviewed-by: Rik van Riel Cc: Christoph Lameter Cc: Ingo Molnar Cc; John Stultz Cc: Peter Zijlstra Cc: Preeti U Murthy Cc: Rik van Riel Cc: Thomas Gleixner Cc: Viresh Kumar Signed-off-by: Frederic Weisbecker

time: Allow gcc to fold usecs_to_jiffies(constant)

2015-06-10T09:31:14Z

To allow constant folding in usecs_to_jiffies() conditionally calls the HZ dependent _usecs_to_jiffies() helpers or, when gcc can not figure out constant folding, __usecs_to_jiffies, which is the renamed original usecs_to_jiffies() function. Signed-off-by: Nicholas Mc Guire Cc: Masahiro Yamada Cc: Sam Ravnborg Cc: Joe Perches Cc: John Stultz Cc: Andrew Hunter Cc: Paul Turner Cc: Michal Marek Link: http://lkml.kernel.org/r/1432832996-12129-2-git-send-email-hofrat@osadl.org Signed-off-by: Thomas Gleixner