This patch reduces the number of pages allocated in the copy_syscall_table function.
Signed-off-by: Ildar Muslukhov <[email protected]> --- tables.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/tables.c b/tables.c index 3c78ab9..306decc 100644 --- a/tables.c +++ b/tables.c @@ -509,17 +509,14 @@ static struct syscalltable * copy_syscall_table(struct syscalltable *from, unsig unsigned int n; struct syscall *copy; - /* FIXME: Use fewer shared maps. - * It's pretty sad that we use a whole page just for a copy of that struct when we - * could fit dozens of them in a page. This would cut down our /proc/$$/maps a *lot* - */ + copy = alloc_shared(nr * sizeof(struct syscall)); + if (copy == NULL) + exit(EXIT_FAILURE); + for (n = 0; n < nr; n++) { - copy = alloc_shared(sizeof(struct syscall)); - if (copy == NULL) - exit(EXIT_FAILURE); - memcpy(copy, from[n].entry, sizeof(struct syscall)); - copy->number = n; - from[n].entry = copy; + memcpy(copy + n , from[n].entry, sizeof(struct syscall)); + copy[n].number = n; + from[n].entry = ©[n]; } return from; } -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe trinity" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
