#ifndef __ASM_GENERIC_CMPXCHG_LOCAL_H #define __ASM_GENERIC_CMPXCHG_LOCAL_H #include #include extern unsigned long wrong_size_cmpxchg(volatile void *ptr) __noreturn; /* * Generic version of __cmpxchg_local (disables interrupts). Takes an unsigned * long parameter, supporting various types of architectures. */ static inline unsigned long __cmpxchg_local_generic(volatile void *ptr, unsigned long old, unsigned long new, int size) { unsigned long flags, prev; /* * Sanity checking, compile-time. */ if (size == 8 && sizeof(unsigned long) != 8) wrong_size_cmpxchg(ptr); raw_local_irq_save(flags); switch (size) { case 1: prev = *(u8 *)ptr; if (prev == old) *(u8 *)ptr = (u8)new; break; case 2: prev = *(u16 *)ptr; if (prev == old) *(u16 *)ptr = (u16)new; break; case 4: prev = *(u32 *)ptr; if (prev == old) *(u32 *)ptr = (u32)new; break; case 8: prev = *(u64 *)ptr; if (prev == old) *(u64 *)ptr = (u64)new; break; default: wrong_size_cmpxchg(ptr); } raw_local_irq_restore(flags); return prev; } /* * Generic version of __cmpxchg64_local. Takes an u64 parameter. */ static inline u64 __cmpxchg64_local_generic(volatile void *ptr, u64 old, u64 new) { u64 prev; unsigned long flags; raw_local_irq_save(flags); prev = *(u64 *)ptr; if (prev == old) *(u64 *)ptr = new; raw_local_irq_restore(flags); return prev; } #endif d> summaryrefslogtreecommitdiff
AgeCommit message (Expand)AuthorFilesLines
2017-02-07sock: add sk_dst_pending_confirm flagJulian Anastasov1-0/+12
2017-02-07net: dsa: Add support for platform dataFlorian Fainelli1-0/+6
2017-02-07net: dsa: Rename and export dev_to_net_device()Florian Fainelli1-0/+1
2017-02-06net: dsa: introduce bridge notifierVivien Didelot1-0/+10
2017-02-06net: dsa: add switch notifierVivien Didelot1-0/+7
2017-02-04net: ipv6: Change notifications for multipath add to RTA_MULTIPATHDavid Ahern1-0/+1
2017-02-04net: ipv6: Allow shorthand delete of all nexthops in multipath routeDavid Ahern1-1/+3
2017-02-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller8-26/+28
2017-02-03sched: cls_flower: expose priority to offloading netdeviceJiri Pirko1-0/+1
2017-02-03ip_tunnels: new IP_TUNNEL_INFO_BRIDGE flag for ip_tunnel_info modeRoopa Prabhu1-0/+1
2017-02-03net/sched: act_ife: Change to use ife moduleYotam Gigi1-1/+0
2017-02-03net: Introduce ife encapsulation moduleYotam Gigi1-0/+51
2017-02-03net/sched: act_ife: Unexport ife_tlv_meta_encodeYotam Gigi1-2/+0
2017-02-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-0/+5
2017-02-02netfilter: allow logging from non-init namespacesMichal Kubeček1-0/+3
2017-02-02ipvs: free ip_vs_dest structs when refcnt=0David Windsor1-1/+1
2017-02-02netfilter: merge ctinfo into nfct pointer storage areaFlorian Westphal1-5/+6
2017-02-02netfilter: guarantee 8 byte minalign for template addressesFlorian Westphal1-0/+2
2017-02-02netfilter: add and use nf_ct_set helperFlorian Westphal2-2/+9
2017-02-02skbuff: add and use skb_nfct helperFlorian Westphal1-1/+1
2017-02-02netfilter: reduce direct skb->nfct usageFlorian Westphal1-3/+6
2017-02-02netfilter: conntrack: no need to pass ctinfo to error handlerFlorian Westphal1-1/+1