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Searched refs:cmpxchg (Results 1 – 25 of 173) sorted by relevance

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/linux/scripts/atomic/
H A Dgen-atomic-fallback.sh227 local cmpxchg="$1"; shift;
234 ___r = raw_${prefix}${cmpxchg}${suffix}((_ptr), ___o, (_new)); \\
244 local cmpxchg="$1"; shift
248 printf "#if defined(arch_try_${cmpxchg}${order})\n"
249 printf "#define raw_try_${cmpxchg}${order} arch_try_${cmpxchg}${order}\n"
252 printf "#elif defined(arch_try_${cmpxchg}_relaxed)\n"
253 printf "#define raw_try_${cmpxchg}${order}(...) \\\\\n"
254 printf " __atomic_op${forder}(arch_try_${cmpxchg}, __VA_ARGS__)\n"
258 printf "#elif defined(arch_try_${cmpxchg})\n"
259 printf "#define raw_try_${cmpxchg}${order} arch_try_${cmpxchg}\n"
[all …]
/linux/Documentation/litmus-tests/atomic/
H A Dcmpxchg-fail-unordered-2.litmus1 C cmpxchg-fail-unordered-2
6 * Demonstrate that a failing cmpxchg() operation does not act as either
7 * an acquire release operation. (In contrast, a successful cmpxchg()
18 r1 = cmpxchg(y, 0, 1);
26 r1 = cmpxchg(y, 0, 1);
H A Dcmpxchg-fail-unordered-1.litmus1 C cmpxchg-fail-unordered-1
6 * Demonstrate that a failing cmpxchg() operation does not act as a
7 * full barrier. (In contrast, a successful cmpxchg() does act as a
19 r1 = cmpxchg(z, 1, 0);
29 r1 = cmpxchg(z, 1, 0);
H A Dcmpxchg-fail-ordered-2.litmus1 C cmpxchg-fail-ordered-2
6 * Demonstrate use of smp_mb__after_atomic() to make a failing cmpxchg
17 r1 = cmpxchg(y, 0, 1);
25 r1 = cmpxchg(y, 0, 1);
H A Dcmpxchg-fail-ordered-1.litmus1 C cmpxchg-fail-ordered-1
6 * Demonstrate that a failing cmpxchg() operation will act as a full
18 r1 = cmpxchg(z, 1, 0);
29 r1 = cmpxchg(z, 1, 0);
/linux/net/ipv4/
H A Dprotocol.c34 return !cmpxchg((const struct net_protocol **)&inet_protos[protocol], in inet_add_protocol()
41 return !cmpxchg((const struct net_offload **)&inet_offloads[protocol], in inet_add_offload()
50 ret = (cmpxchg((const struct net_protocol **)&inet_protos[protocol], in inet_del_protocol()
63 ret = (cmpxchg((const struct net_offload **)&inet_offloads[protocol], in inet_del_offload()
/linux/net/ipv6/
H A Dprotocol.c30 return !cmpxchg((const struct inet6_protocol **)&inet6_protos[protocol], in inet6_add_protocol()
39 ret = (cmpxchg((const struct inet6_protocol **)&inet6_protos[protocol], in inet6_del_protocol()
54 return !cmpxchg((const struct net_offload **)&inet6_offloads[protocol], in inet6_add_offload()
63 ret = (cmpxchg((const struct net_offload **)&inet6_offloads[protocol], in inet6_del_offload()
/linux/Documentation/litmus-tests/
H A DREADME24 cmpxchg-fail-ordered-1.litmus
25 Demonstrate that a failing cmpxchg() operation acts as a full barrier
28 cmpxchg-fail-ordered-2.litmus
29 Demonstrate that a failing cmpxchg() operation acts as an acquire
32 cmpxchg-fail-unordered-1.litmus
33 Demonstrate that a failing cmpxchg() operation does not act as a
36 cmpxchg-fail-unordered-2.litmus
37 Demonstrate that a failing cmpxchg() operation does not act as an
/linux/tools/testing/memblock/
H A DMakefile33 test -L asm/cmpxchg.h || ln -s ../../../arch/x86/include/asm/cmpxchg.h asm/cmpxchg.h
39 $(RM) $(TARGETS) $(OFILES) linux/memblock.h memblock.c asm/asm.h asm/cmpxchg.h
H A D.gitignore5 asm/cmpxchg.h
/linux/tools/include/asm-generic/
H A Datomic-gcc.h65 #define cmpxchg(ptr, oldval, newval) \ macro
70 return cmpxchg(&(v)->counter, oldval, newval); in atomic_cmpxchg()
/linux/lib/
H A Derrseq.c96 cur = cmpxchg(eseq, old, new); in errseq_set()
202 cmpxchg(eseq, old, new); in errseq_check_and_advance()
H A Dcmpxchg-emu.c41 ret = data_race(cmpxchg(p32, old32.w, new32.w)); // Overridden above. in cmpxchg_emu_u8()
/linux/Documentation/translations/zh_CN/locking/
H A Dmutex-design.rst48 (i) 快速路径：试图通过调用cmpxchg()修改锁的所有者为当前任务，以此原子化地
49 获取锁。这只在无竞争的情况下有效（cmpxchg()检查值是否为0，所以3个状态
/linux/arch/sh/kernel/cpu/sh2/
H A Dsmp-j2.c28 while (cmpxchg(pmsg, messages, 0) != messages); in j2_ipi_interrupt_handler()
118 while (cmpxchg(pmsg, old, old|(1U<<message)) != old); in j2_send_ipi()
/linux/drivers/accessibility/speakup/
H A Dselection.c71 if (cmpxchg(&speakup_sel_work.tty, NULL, tty)) { in speakup_set_selection()
124 if (cmpxchg(&speakup_paste_work.tty, NULL, tty)) { in speakup_paste_selection()
/linux/tools/testing/selftests/bpf/
H A Dbpf_atomic.h47 #define cmpxchg(p, old, new) __sync_val_compare_and_swap((p), old, new) macro
52 __unqual_typeof(*(p)) __r = cmpxchg(p, __o, new); \
/linux/kernel/kcsan/
H A Dselftest.c153 KCSAN_CHECK_READ_BARRIER(cmpxchg(&test_var, 0, 0)); in test_barrier()
182 KCSAN_CHECK_WRITE_BARRIER(cmpxchg(&test_var, 0, 0)); in test_barrier()
214 KCSAN_CHECK_RW_BARRIER(cmpxchg(&test_var, 0, 0)); in test_barrier()
/linux/kernel/trace/
H A Dtrace_recursion_record.c78 old = cmpxchg(&recursed_functions[index].ip, 0, ip); in ftrace_record_recursion()
112 cmpxchg(&recursed_functions[index].ip, ip, 0); in ftrace_record_recursion()
H A Dundefsyms_base.c26 cmpxchg((u32 * volatile)&u, 0, 8); in undefsyms_base()
/linux/Documentation/locking/
H A Drt-mutex.rst42 without waiters. The optimized fastpath operations require cmpxchg
66 with ->wait_lock is held. To prevent any fast path cmpxchg to the lock,
72 To prevent a cmpxchg of the owner releasing the lock, we need to
/linux/rust/kernel/sync/atomic/
H A Dpredefine.rs245 assert_eq!(Err(old), x.cmpxchg(new, new, Full));
247 assert_eq!(Ok(old), x.cmpxchg(old, new, Relaxed));
259 assert_eq!(Err(old), unsafe { cmpxchg(ptr, new, new, Full) });
262 assert_eq!(Ok(old), unsafe { cmpxchg(ptr, old, new, Relaxed) });
292 assert_eq!(Err(false), x.cmpxchg(true, true, Relaxed));
294 assert_eq!(Ok(false), x.cmpxchg(false, true, Full));
304 assert_eq!(x.cmpxchg(&raw mut u, &raw mut u, Relaxed), Err(&raw mut v));
305 assert_eq!(x.cmpxchg(&raw mut v, &raw mut u, Relaxed), Ok(&raw mut v));
312 x.cmpxchg(&raw const u, &raw const u, Relaxed),
316 x.cmpxchg(
[all...]
/linux/fs/nfs/
H A Dnfs3acl.c25 cmpxchg(p, ACL_NOT_CACHED, sentinel); in nfs3_prepare_get_acl()
34 if (cmpxchg(p, sentinel, acl) != sentinel) in nfs3_complete_get_acl()
43 cmpxchg(p, sentinel, ACL_NOT_CACHED); in nfs3_abort_get_acl()
/linux/Documentation/features/locking/cmpxchg-local/
H A Darch-support.txt2 # Feature name: cmpxchg-local
/linux/tools/arch/x86/include/asm/
H A Datomic.h71 return cmpxchg(&v->counter, old, new); in atomic_cmpxchg()

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