On Thu, Mar 18, 2021 at 07:03:05PM +0530, Shreeya Patel wrote:
> +struct unicode_ops {
> + struct module *owner;
> + int (*validate)(const struct unicode_map *um, const struct qstr *str);
> + int (*strncmp)(const struct unicode_map *um, const struct qstr *s1,
> + const struct qstr *s2);
> + int (*strncasecmp)(const struct unicode_map *um, const struct qstr *s1,
> + const struct qstr *s2);
> + int (*strncasecmp_folded)(const struct unicode_map *um, const struct
> qstr *cf,
> + const struct qstr *s1);
> + int (*normalize)(const struct unicode_map *um, const struct qstr *str,
> + unsigned char *dest, size_t dlen);
> + int (*casefold)(const struct unicode_map *um, const struct qstr *str,
> + unsigned char *dest, size_t dlen);
> + int (*casefold_hash)(const struct unicode_map *um, const void *salt,
> + struct qstr *str);
> + struct unicode_map* (*load)(const char *version);
> +};
Indirect calls are expensive these days, especially due to the Spectre
mitigations. Would it make sense to use static calls
(include/linux/static_call.h) instead for this?
- Eric
