Re: [RFC][PATCH] kmap_atomic_push

[Andi Kleen]

Peter Zijlstra <peterz@xxxxxxxxxxxxx> writes:
> -
> -static inline void debug_kmap_atomic(enum km_type type)
> +static inline int kmap_atomic_push_idx(void)
>  {
> +	int idx = __get_cpu_var(__kmap_atomic_depth)++;

The counter needs to be of local atomic type. Otherwise kmap_atomic cannot
be done from interrupts/nmis, which is unfortunately occasionally needed.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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