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| author | Sven Schnelle <svens@linux.ibm.com> | 2024-04-30 16:29:59 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2024-05-14 13:37:07 +0200 |
| commit | fa2ae4a377c0fbbcbcd4252842e702f7e4187170 (patch) | |
| tree | 65c1314e568a499982b2f32377ea7ba8dd6cecde /arch/s390/kernel/idle.c | |
| parent | s390/stackstrace: Detect vdso stack frames (diff) | |
| download | linux-fa2ae4a377c0fbbcbcd4252842e702f7e4187170.tar.xz linux-fa2ae4a377c0fbbcbcd4252842e702f7e4187170.zip | |
s390/idle: Rewrite psw_idle() in C
To ease maintenance and further enhancements, convert
the psw_idle() function to C.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/idle.c')
| -rw-r--r-- | arch/s390/kernel/idle.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c index e7239aaf428b..af9c97c0ad73 100644 --- a/arch/s390/kernel/idle.c +++ b/arch/s390/kernel/idle.c @@ -57,9 +57,13 @@ void noinstr arch_cpu_idle(void) psw_mask = PSW_KERNEL_BITS | PSW_MASK_WAIT | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK; clear_cpu_flag(CIF_NOHZ_DELAY); - - /* psw_idle() returns with interrupts disabled. */ - psw_idle(idle, psw_mask); + set_cpu_flag(CIF_ENABLED_WAIT); + if (smp_cpu_mtid) + stcctm(MT_DIAG, smp_cpu_mtid, (u64 *)&idle->mt_cycles_enter); + idle->clock_idle_enter = get_tod_clock_fast(); + idle->timer_idle_enter = get_cpu_timer(); + bpon(); + __load_psw_mask(psw_mask); } static ssize_t show_idle_count(struct device *dev, |