From: Ingo Molnar Date: Mon, 27 Mar 2006 09:16:28 +0000 (-0800) Subject: [PATCH] lightweight robust futexes updates 2 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=76b81e2b0e2241accebcc68e126bc5ab958661b9;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [PATCH] lightweight robust futexes updates 2 futex.h updates: - get rid of FUTEX_OWNER_PENDING - it's not used - reduce ROBUST_LIST_LIMIT to a saner value Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/include/linux/futex.h b/include/linux/futex.h index 55fff96ae859..966a5b3da439 100644 --- a/include/linux/futex.h +++ b/include/linux/futex.h @@ -79,22 +79,16 @@ struct robust_list_head { */ #define FUTEX_OWNER_DIED 0x40000000 -/* - * Reserved bit: - */ -#define FUTEX_OWNER_PENDING 0x20000000 - /* * The rest of the robust-futex field is for the TID: */ -#define FUTEX_TID_MASK 0x1fffffff +#define FUTEX_TID_MASK 0x3fffffff /* - * A limit of one million locks held per thread (!) ought to be enough - * for some time. This also protects against a deliberately circular - * list. Not worth introducing an rlimit for this: + * This limit protects against a deliberately circular list. + * (Not worth introducing an rlimit for it) */ -#define ROBUST_LIST_LIMIT 1048576 +#define ROBUST_LIST_LIMIT 2048 long do_futex(unsigned long uaddr, int op, int val, unsigned long timeout, unsigned long uaddr2, int val2,