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Magnus Lindholm
d1ee975398
Alpha masks interrupts through the PAL IPL state, so lockdep cannot infer hardirq state transitions from generic code alone. Add explicit hardirq on/off annotations to the low-level entry and return paths so lockdep's IRQ state follows the hardware IPL state. Annotate the PAL IPL transitions and the shared return-to-user/kernel paths where interrupts become enabled or disabled. With the preceding irqflags, raw-lock, sysfs, and ftrace return-address preparations in place, select LOCKDEP_SUPPORT and TRACE_IRQFLAGS_SUPPORT for Alpha. This keeps CONFIG_PROVE_LOCKING usable on Alpha instead of disabling debug_locks due to IRQ-state mismatches. Reviewed-by: Matt Turner <[email protected]> Tested-by: Matt Turner <[email protected]> Signed-off-by: Magnus Lindholm <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Magnus Lindholm <[email protected]>