diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2023-02-13 14:35:19 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-02-15 13:07:01 +0300 |
| commit | 6472a2dcc4274452bb46fb5a0d968a1c1ed772ee (patch) | |
| tree | 9af7314210b1e841eb15a485abe6e3320c49ab91 /arch/s390/kernel/idle.c | |
| parent | f96f41aae2b5bd34d32f462c7b45c0f4fad2b59e (diff) | |
| download | linux-6472a2dcc4274452bb46fb5a0d968a1c1ed772ee.tar.xz | |
s390/irq,idle: simplify idle check
Use the per-cpu CIF_ENABLED_WAIT flag to decide if an interrupt
occurred while a cpu was idle, instead of checking two conditions
within the old psw.
Also move clearing of the CIF_ENABLED_WAIT bit to the early interrupt
handler, which in turn makes arch_vcpu_is_preempted() also a bit more
precise, since the flag is now cleared before interrupt handlers have
been called.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/idle.c')
| -rw-r--r-- | arch/s390/kernel/idle.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c index dd8351e76539..1a1a419ed846 100644 --- a/arch/s390/kernel/idle.c +++ b/arch/s390/kernel/idle.c @@ -28,7 +28,6 @@ void account_idle_time_irq(void) u64 cycles_new[8]; int i; - clear_cpu_flag(CIF_ENABLED_WAIT); if (smp_cpu_mtid) { stcctm(MT_DIAG, smp_cpu_mtid, cycles_new); for (i = 0; i < smp_cpu_mtid; i++) |