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| author | Mark Rutland <mark.rutland@arm.com> | 2021-10-20 22:23:09 +0300 |
|---|---|---|
| committer | Mark Rutland <mark.rutland@arm.com> | 2021-10-26 12:13:31 +0300 |
| commit | 0953fb263714e1c8c1c3d395036d9a14310081dd (patch) | |
| tree | 993373d8c1833347a90e071d44862b63a1c9a1a3 /Documentation/core-api | |
| parent | 5aecc243776e89b0c462edd0a589030baba99ef8 (diff) | |
| download | linux-0953fb263714e1c8c1c3d395036d9a14310081dd.tar.xz | |
irq: remove handle_domain_{irq,nmi}()
Now that entry code handles IRQ entry (including setting the IRQ regs)
before calling irqchip code, irqchip code can safely call
generic_handle_domain_irq(), and there's no functional reason for it to
call handle_domain_irq().
Let's cement this split of responsibility and remove handle_domain_irq()
entirely, updating irqchip drivers to call generic_handle_domain_irq().
For consistency, handle_domain_nmi() is similarly removed and replaced
with a generic_handle_domain_nmi() function which also does not perform
any entry logic.
Previously handle_domain_{irq,nmi}() had a WARN_ON() which would fire
when they were called in an inappropriate context. So that we can
identify similar issues going forward, similar WARN_ON_ONCE() logic is
added to the generic_handle_*() functions, and comments are updated for
clarity and consistency.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation/core-api')
| -rw-r--r-- | Documentation/core-api/irq/irq-domain.rst | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/Documentation/core-api/irq/irq-domain.rst b/Documentation/core-api/irq/irq-domain.rst index 9c0e8758037a..d30b4d0a9769 100644 --- a/Documentation/core-api/irq/irq-domain.rst +++ b/Documentation/core-api/irq/irq-domain.rst @@ -67,9 +67,6 @@ variety of methods: deprecated - generic_handle_domain_irq() handles an interrupt described by a domain and a hwirq number -- handle_domain_irq() does the same thing for root interrupt - controllers and deals with the set_irq_reg()/irq_enter() sequences - that most architecture requires Note that irq domain lookups must happen in contexts that are compatible with a RCU read-side critical section. |