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| author |   Sebastian Ott <sebott@linux.ibm.com> | 2019-02-26 16:07:32 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-04-29 10:47:01 +0200 |
| commit | fbfe07d440f2c55070a0358f66560bb4f9fb92e7 (patch) | |
| tree | f5c7e9d68381f75f625126383c4a8b77c386f657 /arch/s390/pci/pci_irq.c | |
| parent | s390/pci: gather statistics for floating vs directed irqs (diff) | |
| download | linux-dev-fbfe07d440f2c55070a0358f66560bb4f9fb92e7.tar.xz linux-dev-fbfe07d440f2c55070a0358f66560bb4f9fb92e7.zip | |
s390/pci: add parameter to force floating irqs
Provide a kernel parameter to force the usage of floating interrupts.
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/s390/pci/pci_irq.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/pci/pci_irq.c b/arch/s390/pci/pci_irq.c index c73ab855a2ca..d80616ae8dd8 100644 --- a/arch/s390/pci/pci_irq.c +++ b/arch/s390/pci/pci_irq.c @@ -433,6 +433,9 @@ int __init zpci_irq_init(void) int rc; irq_delivery = sclp.has_dirq ? DIRECTED : FLOATING; + if (s390_pci_force_floating) + irq_delivery = FLOATING; + if (irq_delivery == DIRECTED) zpci_airq.handler = zpci_directed_irq_handler; |