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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 12:15:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 12:15:10 -0800
commit92c020d08d83673ecd15a9069d4457378668da31 (patch)
tree3dbc5a9c1ab179f55be49e30e378cc4e650fc20e /arch/s390
parentbca13ce4554ae9cf5083e5adf395ad2266cb571b (diff)
parent6b94780e45c17b83e3e75f8aaca5a328db583c74 (diff)
downloadlinux-92c020d08d83673ecd15a9069d4457378668da31.tar.bz2
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar: "The main scheduler changes in this cycle were: - support Intel Turbo Boost Max Technology 3.0 (TBM3) by introducig a notion of 'better cores', which the scheduler will prefer to schedule single threaded workloads on. (Tim Chen, Srinivas Pandruvada) - enhance the handling of asymmetric capacity CPUs further (Morten Rasmussen) - improve/fix load handling when moving tasks between task groups (Vincent Guittot) - simplify and clean up the cputime code (Stanislaw Gruszka) - improve mass fork()ed task spread a.k.a. hackbench speedup (Vincent Guittot) - make struct kthread kmalloc()ed and related fixes (Oleg Nesterov) - add uaccess atomicity debugging (when using access_ok() in the wrong context), under CONFIG_DEBUG_ATOMIC_SLEEP=y (Peter Zijlstra) - implement various fixes, cleanups and other enhancements (Daniel Bristot de Oliveira, Martin Schwidefsky, Rafael J. Wysocki)" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits) sched/core: Use load_avg for selecting idlest group sched/core: Fix find_idlest_group() for fork kthread: Don't abuse kthread_create_on_cpu() in __kthread_create_worker() kthread: Don't use to_live_kthread() in kthread_[un]park() kthread: Don't use to_live_kthread() in kthread_stop() Revert "kthread: Pin the stack via try_get_task_stack()/put_task_stack() in to_live_kthread() function" kthread: Make struct kthread kmalloc'ed x86/uaccess, sched/preempt: Verify access_ok() context sched/x86: Make CONFIG_SCHED_MC_PRIO=y easier to enable sched/x86: Change CONFIG_SCHED_ITMT to CONFIG_SCHED_MC_PRIO x86/sched: Use #include <linux/mutex.h> instead of #include <asm/mutex.h> cpufreq/intel_pstate: Use CPPC to get max performance acpi/bus: Set _OSC for diverse core support acpi/bus: Enable HWP CPPC objects x86/sched: Add SD_ASYM_PACKING flags to x86 ITMT CPU x86/sysctl: Add sysctl for ITMT scheduling feature x86: Enable Intel Turbo Boost Max Technology 3.0 x86/topology: Define x86's arch_update_cpu_topology sched: Extend scheduler's asym packing sched/fair: Clean up the tunable parameter definitions ...
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/Kconfig1
-rw-r--r--arch/s390/kernel/vtime.c9
2 files changed, 7 insertions, 3 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 426481d4cc86..028f97be5bae 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -171,6 +171,7 @@ config S390
select SYSCTL_EXCEPTION_TRACE
select TTY
select VIRT_CPU_ACCOUNTING
+ select ARCH_HAS_SCALED_CPUTIME
select VIRT_TO_BUS
select HAVE_NMI
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 856e30d8463f..1bd5dde2d5a9 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -137,8 +137,10 @@ static int do_account_vtime(struct task_struct *tsk, int hardirq_offset)
user_scaled = (user_scaled * mult) / div;
system_scaled = (system_scaled * mult) / div;
}
- account_user_time(tsk, user, user_scaled);
- account_system_time(tsk, hardirq_offset, system, system_scaled);
+ account_user_time(tsk, user);
+ tsk->utimescaled += user_scaled;
+ account_system_time(tsk, hardirq_offset, system);
+ tsk->stimescaled += system_scaled;
steal = S390_lowcore.steal_timer;
if ((s64) steal > 0) {
@@ -202,7 +204,8 @@ void vtime_account_irq_enter(struct task_struct *tsk)
system_scaled = (system_scaled * mult) / div;
}
- account_system_time(tsk, 0, system, system_scaled);
+ account_system_time(tsk, 0, system);
+ tsk->stimescaled += system_scaled;
virt_timer_forward(system);
}