[PATCH] iommu: replace single-char identifiers in macros
Robin Murphy
robin.murphy at arm.com
Mon Jun 3 13:07:38 UTC 2019
On 03/06/2019 13:59, Qian Cai wrote:
> There are a few macros in IOMMU have single-char identifiers make the
> code hard to read and debug. Replace them with meaningful names.
>
> Suggested-by: Andrew Morton <akpm at linux-foundation.org>
> Signed-off-by: Qian Cai <cai at lca.pw>
> ---
> include/linux/dmar.h | 14 ++++++++------
> 1 file changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/include/linux/dmar.h b/include/linux/dmar.h
> index f8af1d770520..eb634912f475 100644
> --- a/include/linux/dmar.h
> +++ b/include/linux/dmar.h
> @@ -104,12 +104,14 @@ static inline bool dmar_rcu_check(void)
>
> #define dmar_rcu_dereference(p) rcu_dereference_check((p), dmar_rcu_check())
>
> -#define for_each_dev_scope(a, c, p, d) \
> - for ((p) = 0; ((d) = (p) < (c) ? dmar_rcu_dereference((a)[(p)].dev) : \
> - NULL, (p) < (c)); (p)++)
> -
> -#define for_each_active_dev_scope(a, c, p, d) \
> - for_each_dev_scope((a), (c), (p), (d)) if (!(d)) { continue; } else
> +#define for_each_dev_scope(devs, cnt, i, tmp) \
> + for ((i) = 0; ((tmp) = (i) < (cnt) ? \
Given that "tmp" actually appears to be some sort of device cursor, I'm
not sure that that naming really achieves the stated goal of clarity :/
Robin.
> + dmar_rcu_dereference((devs)[(i)].dev) : NULL, (i) < (cnt)); \
> + (i)++)
> +
> +#define for_each_active_dev_scope(devs, cnt, i, tmp) \
> + for_each_dev_scope((devs), (cnt), (i), (tmp)) \
> + if (!(tmp)) { continue; } else
>
> extern int dmar_table_init(void);
> extern int dmar_dev_scope_init(void);
>
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