- 14 6月, 2017 10 次提交
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由 Thomas Gleixner 提交于
No nanosleep implementation modifies the rqtp argument. Mark is const. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-14-viro@ZenIV.linux.org.uk
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由 Al Viro 提交于
Move them to the native implementations and get rid of the set_fs() hackery. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-13-viro@ZenIV.linux.org.uk
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由 Al Viro 提交于
... and get rid of set_fs() in there Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-11-viro@ZenIV.linux.org.uk
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由 Al Viro 提交于
... and get rid of set_fs() in there Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-10-viro@ZenIV.linux.org.uk
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由 Al Viro 提交于
Get rid of set_fs() mess and sanitize compat_{get,put}_timex(), while we are at it. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-9-viro@ZenIV.linux.org.uk
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由 Al Viro 提交于
No more users. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-8-viro@ZenIV.linux.org.uk
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由 Al Viro 提交于
Turn restart_block.nanosleep.{rmtp,compat_rmtp} into a tagged union (kind = 1 -> native, kind = 2 -> compat, kind = 0 -> nothing) and make the places doing actual copyout handle compat as well as native (that will become a helper in the next commit). Result: compat wrappers, messing with reassignments, etc. are gone. [ tglx: Folded in a variant of Peter Zijlstras enum patch ] Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-6-viro@ZenIV.linux.org.uk
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由 Al Viro 提交于
... instead of doing that in every ->nsleep() instance Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-5-viro@ZenIV.linux.org.uk
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由 Al Viro 提交于
Store the pointer to the timespec which gets updated with the remaining time in the restart block and remove the function argument. [ tglx: Added changelog ] Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-3-viro@ZenIV.linux.org.uk
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- 13 6月, 2017 2 次提交
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由 Thomas Gleixner 提交于
The recent rework of the posix timer internals broke the magic posix mechanism, which requires that relative timers are not affected by modifications of the underlying clock. That means relative CLOCK_REALTIME timers cannot use CLOCK_REALTIME, because that can be set and adjusted. The underlying hrtimer switches the clock for these timers to CLOCK_MONOTONIC. That still works, but reading the remaining time of such a timer has been broken in the rework. The old code used the hrtimer internals directly and avoided the posix clock callbacks. Now common_timer_get() uses the underlying kclock->timer_get() callback, which is still CLOCK_REALTIME based. So the remaining time of such a timer is calculated against the wrong time base. Handle it by switching the k_itimer->kclock pointer according to the resulting hrtimer mode. k_itimer->it_clock still contains CLOCK_REALTIME because the timer might be set with ABSTIME later and then it needs to switch back to the realtime posix clock implementation. Fixes: eae1c4ae ("posix-timers: Make use of cancel/arm callbacks") Reported-by: NAndrei Vagin <avagin@virtuozzo.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Link: http://lkml.kernel.org/r/20170609201156.GB21491@outlook.office365.com
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由 Thomas Gleixner 提交于
The recent posix timer rework moved the clearing of the itimerspec to the real syscall implementation, but forgot that the kclock->timer_get() is used by timer_settime() as well. That results in an uninitialized variable and bogus values returned to user space. Add the missing memset to timer_settime(). Fixes: eabdec04 ("posix-timers: Zero settings value in common code") Reported-by: NAndrei Vagin <avagin@virtuozzo.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Link: http://lkml.kernel.org/r/20170609201156.GB21491@outlook.office365.com
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- 12 6月, 2017 1 次提交
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由 Thomas Gleixner 提交于
The refactoring of the posix-timer core to allow better code sharing introduced inverted logic vs. SIGEV_NONE timers in common_timer_get(). That causes hrtimer_forward() to be called on active timers, which rightfully triggers the warning hrtimer_forward(). Make sig_none what it says: signal mode == SIGEV_NONE. Fixes: 91d57bae ("posix-timers: Make use of forward/remaining callbacks") Reported-by: NYe Xiaolong <xiaolong.ye@intel.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170609104457.GA39907@inn.lkp.intel.com
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- 04 6月, 2017 13 次提交
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由 Thomas Gleixner 提交于
All required callbacks are in place. Switch the alarm timer based posix interval timer callbacks to the common implementation and remove the incorrect private implementation. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211657.825471962@linutronix.de
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由 Thomas Gleixner 提交于
Replace the hrtimer calls by calls to the new try_to_cancel()/arm() kclock callbacks and move the hrtimer specific implementation into the corresponding callback functions. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211657.355396667@linutronix.de
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由 Thomas Gleixner 提交于
Zero out the settings struct in the common code so the callbacks do not have to do it themself. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211657.200870713@linutronix.de
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由 Thomas Gleixner 提交于
Replace the hrtimer calls by calls to the new forward/remaining kclock callbacks and move the hrtimer specific implementation into the corresponding callback functions. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211657.121437232@linutronix.de
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由 Thomas Gleixner 提交于
Keep track of the activation state of posix timers. This is a preparatory change for making common_timer_get() usable by both hrtimer and alarm timer implementations. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.967783982@linutronix.de
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由 Thomas Gleixner 提交于
Use the new timer_rearm() callback to replace the conditional hardcoded calls into the hrtimer and cpu timer code. This allows later to bring the same logic to alarmtimers. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.889661919@linutronix.de
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由 Thomas Gleixner 提交于
That function is a misnomer. Rename it with a proper prefix to posixtimer_rearm(). Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.811362578@linutronix.de
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由 Thomas Gleixner 提交于
Having the k_clock pointer in the k_itimer struct avoids the lookup in several code pathes and makes the next steps of unification of the hrtimer and alarmtimer based posix timers simpler. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.641222072@linutronix.de
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由 Thomas Gleixner 提交于
Preparatory patch to unify the alarm timer and hrtimer based posix interval timer handling. The interval is used as a criteria for rearming decisions so moving it out of the clock specific data structures allows later unification. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.563922908@linutronix.de
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由 Thomas Gleixner 提交于
hrtimer based posix-timers and posix-cpu-timers handle the update of the rearming and overflow related status fields differently. Move that update to the common rearming code. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.484936964@linutronix.de
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由 Thomas Gleixner 提交于
None of these declarations is required outside of kernel/time. Move them to an internal header. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/20170530211656.394803853@linutronix.de
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由 Thomas Gleixner 提交于
Move it below the actual implementations as there are new callbacks coming which would require even more forward declarations. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.238209952@linutronix.de
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由 Thomas Gleixner 提交于
Since the removal of the mmtimer driver the export is not longer needed. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.052744418@linutronix.de
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- 27 5月, 2017 1 次提交
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由 Christoph Hellwig 提交于
There are no more modular users providing a posix clock. The register function is now pointless so the posix clock array can be initialized statically at compile time and the array including the various k_clock structs can be marked 'const'. Inspired by changes in the Grsecurity patch set, but done proper. [ tglx: Massaged changelog and fixed the POSIX_TIMER=n case ] Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Mike Travis <mike.travis@hpe.com> Cc: Dimitri Sivanich <sivanich@hpe.com> Link: http://lkml.kernel.org/r/20170526090311.3377-3-hch@lst.de
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- 15 4月, 2017 6 次提交
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由 Deepa Dinamani 提交于
struct timespec is not y2038 safe on 32 bit machines. Replace uses of struct timespec with struct timespec64 in the kernel. The syscall interfaces themselves will be changed in a separate series. Note that the restart_block parameter for nanosleep has also been left unchanged and will be part of syscall series noted above. Signed-off-by: NDeepa Dinamani <deepa.kernel@gmail.com> Cc: y2038@lists.linaro.org Cc: john.stultz@linaro.org Cc: arnd@arndb.de Link: http://lkml.kernel.org/r/1490555058-4603-8-git-send-email-deepa.kernel@gmail.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Deepa Dinamani 提交于
struct timespec is not y2038 safe on 32 bit machines. Replace uses of struct timespec with struct timespec64 in the kernel. struct itimerspec internally uses struct timespec. Use struct itimerspec64 which uses struct timespec64. The syscall interfaces themselves will be changed in a separate series. Signed-off-by: NDeepa Dinamani <deepa.kernel@gmail.com> Cc: y2038@lists.linaro.org Cc: john.stultz@linaro.org Cc: arnd@arndb.de Link: http://lkml.kernel.org/r/1490555058-4603-7-git-send-email-deepa.kernel@gmail.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Deepa Dinamani 提交于
struct timespec is not y2038 safe on 32 bit machines. Replace uses of struct timespec with struct timespec64 in the kernel. The syscall interfaces themselves will be changed in a separate series. Signed-off-by: NDeepa Dinamani <deepa.kernel@gmail.com> Cc: y2038@lists.linaro.org Cc: john.stultz@linaro.org Cc: arnd@arndb.de Link: http://lkml.kernel.org/r/1490555058-4603-6-git-send-email-deepa.kernel@gmail.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Deepa Dinamani 提交于
struct timespec is not y2038 safe on 32 bit machines. Replace uses of struct timespec with struct timespec64 in the kernel. The syscall interfaces themselves will be changed in a separate series. The clock_getres() interface has also been changed to use timespec64 even though this particular interface is not affected by the y2038 problem. This helps verification for internal kernel code for y2038 readiness by getting rid of time_t/ timeval/ timespec completely. Signed-off-by: NDeepa Dinamani <deepa.kernel@gmail.com> Cc: y2038@lists.linaro.org Cc: john.stultz@linaro.org Cc: arnd@arndb.de Link: http://lkml.kernel.org/r/1490555058-4603-5-git-send-email-deepa.kernel@gmail.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Deepa Dinamani 提交于
struct timespec is not y2038 safe on 32 bit machines. Replace uses of struct timespec with struct timespec64 in the kernel. The syscall interfaces themselves will be changed in a separate series. Signed-off-by: NDeepa Dinamani <deepa.kernel@gmail.com> Cc: y2038@lists.linaro.org Cc: john.stultz@linaro.org Cc: arnd@arndb.de Link: http://lkml.kernel.org/r/1490555058-4603-4-git-send-email-deepa.kernel@gmail.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Deepa Dinamani 提交于
struct timespec is not y2038 safe on 32 bit machines and needs to be replaced with struct timespec64. do_sys_timeofday() is just a wrapper function. Replace all calls to this function with direct calls to do_sys_timeofday64() instead and delete do_sys_timeofday(). Signed-off-by: NDeepa Dinamani <deepa.kernel@gmail.com> Cc: y2038@lists.linaro.org Cc: john.stultz@linaro.org Cc: arnd@arndb.de Cc: linux-alpha@vger.kernel.org Link: http://lkml.kernel.org/r/1490555058-4603-2-git-send-email-deepa.kernel@gmail.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 02 3月, 2017 1 次提交
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由 Ingo Molnar 提交于
sched/headers: Prepare to move exit_files() and exit_itimers() from <linux/sched.h> to <linux/sched/task.h> But first update the usage site. Acked-by: NLinus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: NIngo Molnar <mingo@kernel.org>
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- 26 12月, 2016 2 次提交
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由 Thomas Gleixner 提交于
ktime_set(S,N) was required for the timespec storage type and is still useful for situations where a Seconds and Nanoseconds part of a time value needs to be converted. For anything where the Seconds argument is 0, this is pointless and can be replaced with a simple assignment. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>
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由 Thomas Gleixner 提交于
ktime is a union because the initial implementation stored the time in scalar nanoseconds on 64 bit machine and in a endianess optimized timespec variant for 32bit machines. The Y2038 cleanup removed the timespec variant and switched everything to scalar nanoseconds. The union remained, but become completely pointless. Get rid of the union and just keep ktime_t as simple typedef of type s64. The conversion was done with coccinelle and some manual mopping up. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>
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- 25 12月, 2016 1 次提交
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由 Linus Torvalds 提交于
This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>' sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 17 1月, 2016 1 次提交
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由 Thomas Gleixner 提交于
As Helge reported for timerfd we have the same issue in posix timers. We return remaining time larger than the programmed relative time to user space in case of CONFIG_TIME_LOW_RES=y. Use the proper function to adjust the extra time added in hrtimer_start_range_ns(). Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Helge Deller <deller@gmx.de> Cc: John Stultz <john.stultz@linaro.org> Cc: linux-m68k@lists.linux-m68k.org Cc: dhowells@redhat.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160114164159.450510905@linutronix.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 22 4月, 2015 1 次提交
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由 Thomas Gleixner 提交于
The resolution is directly accessible now. So its simpler just to fill in the values of the timespec and be done with it. Text size reduction (combined with "hrtimer: Get rid of the resolution field in hrtimer_clock_base"): x8664 -61, i386 -221, ARM -60, power64 -48 Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/20150414203500.879888080@linutronix.deSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 25 10月, 2014 1 次提交
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由 Mathias Krause 提交于
If userland creates a timer without specifying a sigevent info, we'll create one ourself, using a stack local variable. Particularly will we use the timer ID as sival_int. But as sigev_value is a union containing a pointer and an int, that assignment will only partially initialize sigev_value on systems where the size of a pointer is bigger than the size of an int. On such systems we'll copy the uninitialized stack bytes from the timer_create() call to userland when the timer actually fires and we're going to deliver the signal. Initialize sigev_value with 0 to plug the stack info leak. Found in the PaX patch, written by the PaX Team. Fixes: 5a9fa730 ("posix-timers: kill ->it_sigev_signo and...") Signed-off-by: NMathias Krause <minipli@googlemail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Brad Spengler <spender@grsecurity.net> Cc: PaX Team <pageexec@freemail.hu> Cc: <stable@vger.kernel.org> # v2.6.28+ Link: http://lkml.kernel.org/r/1412456799-32339-1-git-send-email-minipli@googlemail.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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