genirq: Update irq stats from NMI handlers

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The NMI handlers handle_percpu_devid_fasteoi_nmi() and handle_fasteoi_nmi()
do not update the interrupt counts. Due to that the NMI interrupt count
does not show up correctly in /proc/interrupts.

Add the statistics and treat the NMI handlers in the same way as per cpu
interrupts and prevent them from updating irq_desc::tot_count as this might
be corrupted due to concurrency.

[ tglx: Massaged changelog ]

Fixes: 2dcf1fbcad ("genirq: Provide NMI handlers")
Signed-off-by: Shijith Thotton <sthotton@marvell.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1562313336-11888-1-git-send-email-sthotton@marvell.com

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This commit is contained in:

Shijith Thotton 2019-07-05 07:56:20 +00:00 • committed by Thomas Gleixner

parent 9b979ac3ce

commit c09cb12935

2 changed files with 11 additions and 1 deletions

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4

kernel/irq/chip.c

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8

kernel/irq/irqdesc.c

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