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| author | Sven Schnelle <svens@linux.ibm.com> | 2024-07-16 09:26:13 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2024-07-23 16:02:31 +0200 |
| commit | a795eeaf851b91c79fc357a245ca72fd1e7df906 (patch) | |
| tree | c7d0855d529da01d8a288cebab487d4be0895714 /arch/s390/kernel/smp.c | |
| parent | s390/boot: Do not assume the decompressor range is reserved (diff) | |
| download | linux-a795eeaf851b91c79fc357a245ca72fd1e7df906.tar.xz linux-a795eeaf851b91c79fc357a245ca72fd1e7df906.zip | |
s390/smp: Handle restart interrupt on ipl cpu
The current smp code allows to trigger a restart interrupt on CPUs
offline in linux. To allow using the percpu infrastructure instead
of the pcpu_devices array, switch to the ipl cpu which is always
online before calling do_restart().
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/s390/kernel/smp.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index c3c54adf67bc..1e1290525423 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -383,21 +383,6 @@ static int pcpu_set_smt(unsigned int mtid) } /* - * Call function on an online CPU. - */ -void smp_call_online_cpu(void (*func)(void *), void *data) -{ - struct pcpu *pcpu; - - /* Use the current cpu if it is online. */ - pcpu = pcpu_find_address(cpu_online_mask, stap()); - if (!pcpu) - /* Use the first online cpu. */ - pcpu = pcpu_devices + cpumask_first(cpu_online_mask); - pcpu_delegate(pcpu, func, data, (unsigned long) restart_stack); -} - -/* * Call function on the ipl CPU. */ void smp_call_ipl_cpu(void (*func)(void *), void *data) |