Andrea Parri a2977c0ca3 membarrier: riscv: Add full memory barrier in switch_mm() ... commit d6cfd1770f upstream. The membarrier system call requires a full memory barrier after storing to rq->curr, before going back to user-space. The barrier is only needed when switching between processes: the barrier is implied by mmdrop() when switching from kernel to userspace, and it's not needed when switching from userspace to kernel. Rely on the feature/mechanism ARCH_HAS_MEMBARRIER_CALLBACKS and on the primitive membarrier_arch_switch_mm(), already adopted by the PowerPC architecture, to insert the required barrier. Fixes: fab957c11e ("RISC-V: Atomic and Locking Code") Signed-off-by: Andrea Parri <parri.andrea@gmail.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/r/20240131144936.29190-2-parri.andrea@gmail.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: WangYuli <wangyuli@uniontech.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-09-12 11:11:45 +02:00
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autogroup.c
autogroup.h
build_policy.c
build_utility.c
clock.c
completion.c
core_sched.c
core.c	membarrier: riscv: Add full memory barrier in switch_mm()	2024-09-12 11:11:45 +02:00
cpuacct.c
cpudeadline.c
cpudeadline.h
cpufreq_schedutil.c	cpufreq: schedutil: Update next_freq when cpufreq_limits change	2023-10-05 22:09:50 +02:00
cpufreq.c
cpupri.c	sched/rt: Fix live lock between select_fallback_rq() and RT push	2023-09-28 22:58:13 +02:00
cpupri.h
cputime.c	sched/cputime: Fix mul_u64_u64_div_u64() precision for cputime	2024-08-14 13:58:47 +02:00
deadline.c	sched: Fix stop_one_cpu_nowait() vs hotplug	2023-11-20 11:58:52 +01:00
debug.c
fair.c	sched/fair: set_load_weight() must also call reweight_task() for SCHED_IDLE tasks	2024-08-03 08:54:14 +02:00
features.h
idle.c	kernel/sched: Modify initial boot task idle setup	2023-09-19 10:48:04 +02:00
isolation.c	sched/isolation: Fix boot crash when maxcpus < first housekeeping CPU	2024-06-12 11:11:24 +02:00
loadavg.c
Makefile
membarrier.c	sched/membarrier: reduce the ability to hammer on sys_membarrier	2024-02-23 09:25:27 +01:00
pelt.c
pelt.h
psi.c	sched: Move psi_account_irqtime() out of update_rq_clock_task() hotpath	2024-07-18 13:21:25 +02:00
rt.c	sched/rt: Disallow writing invalid values to sched_rt_period_us	2024-03-01 13:34:47 +01:00
sched-pelt.h
sched.h	sched/fair: set_load_weight() must also call reweight_task() for SCHED_IDLE tasks	2024-08-03 08:54:14 +02:00
smp.h
stats.c	profiling: remove profile=sleep support	2024-08-14 13:58:47 +02:00
stats.h	sched: Move psi_account_irqtime() out of update_rq_clock_task() hotpath	2024-07-18 13:21:25 +02:00
stop_task.c
swait.c
topology.c	sched/topology: Handle NUMA_NO_NODE in sched_numa_find_nth_cpu()	2024-08-29 17:33:24 +02:00
wait_bit.c
wait.c