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/linux/tools/memory-model/Documentation/
H A Daccess-marking.txt20 2. Data-race marking, for example, "data_race(a = b);"
37 WRITE_ONCE(a, b + data_race(c + d) + READ_ONCE(e));
39 Neither plain C-language accesses nor data_race() (#1 and #2 above) place
45 preferable to data_race(), which in turn is usually preferable to plain
47 data_race(READ_ONCE(a)), which will both restrict compiler optimizations
52 race with one of data_race(), READ_ONCE(), or WRITE_ONCE(), will prevent
56 ill-considered additions of data_race(), READ_ONCE(), and WRITE_ONCE()
60 data_race() and even plain C-language accesses is preferable to
64 Use of the data_race() Macro
67 Here are some situations where data_race() should be used instead of
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/linux/kernel/
H A Drseq.c136 stats.exit += data_race(per_cpu(rseq_stats.exit, cpu)); in rseq_stats_show()
137 stats.signal += data_race(per_cpu(rseq_stats.signal, cpu)); in rseq_stats_show()
138 stats.slowpath += data_race(per_cpu(rseq_stats.slowpath, cpu)); in rseq_stats_show()
139 stats.fastpath += data_race(per_cpu(rseq_stats.fastpath, cpu)); in rseq_stats_show()
140 stats.ids += data_race(per_cpu(rseq_stats.ids, cpu)); in rseq_stats_show()
141 stats.cs += data_race(per_cpu(rseq_stats.cs, cpu)); in rseq_stats_show()
142 stats.clear += data_race(per_cpu(rseq_stats.clear, cpu)); in rseq_stats_show()
143 stats.fixup += data_race(per_cpu(rseq_stats.fixup, cpu)); in rseq_stats_show()
145 stats.s_granted += data_race(per_cpu(rseq_stats.s_granted, cpu)); in rseq_stats_show()
146 stats.s_expired += data_race(per_cpu(rseq_stats.s_expired, cpu)); in rseq_stats_show()
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/linux/include/linux/
H A Dsrcutiny.h148 idx = ((data_race(READ_ONCE(ssp->srcu_idx)) + 1) & 0x2) >> 1; in srcu_torture_stats_print()
151 data_race(READ_ONCE(ssp->srcu_lock_nesting[!idx])), in srcu_torture_stats_print()
152 data_race(READ_ONCE(ssp->srcu_lock_nesting[idx])), in srcu_torture_stats_print()
153 data_race(READ_ONCE(ssp->srcu_idx)), in srcu_torture_stats_print()
154 data_race(READ_ONCE(ssp->srcu_idx_max))); in srcu_torture_stats_print()
/linux/security/tomoyo/
H A Dutil.c1069 perm = data_race(container_of(ptr, struct tomoyo_path_acl, head)->perm); in tomoyo_domain_quota_is_ok()
1072 perm = data_race(container_of(ptr, struct tomoyo_path2_acl, head)->perm); in tomoyo_domain_quota_is_ok()
1075 perm = data_race(container_of(ptr, struct tomoyo_path_number_acl, head) in tomoyo_domain_quota_is_ok()
1079 perm = data_race(container_of(ptr, struct tomoyo_mkdev_acl, head)->perm); in tomoyo_domain_quota_is_ok()
1082 perm = data_race(container_of(ptr, struct tomoyo_inet_acl, head)->perm); in tomoyo_domain_quota_is_ok()
1085 perm = data_race(container_of(ptr, struct tomoyo_unix_acl, head)->perm); in tomoyo_domain_quota_is_ok()
/linux/tools/virtio/linux/
H A Dcompiler.h36 #define data_race(expr) \ macro
/linux/lib/
H A Dcmpxchg-emu.c41 ret = data_race(cmpxchg(p32, old32.w, new32.w)); // Overridden above. in cmpxchg_emu_u8()
H A Dstackdepot.c618 if (data_race(stackdepot_memcmp(entries, stack->entries, size))) in find_stack()
859 seq_printf(seq, "pools: %d\n", data_race(pools_num)); in stats_show()
861 seq_printf(seq, "%s: %ld\n", counter_names[i], data_race(counters[i])); in stats_show()
H A Dgroup_cpus.c527 cpumask_copy(npresmsk, data_race(cpu_present_mask)); in group_cpus_evenly()
/linux/Documentation/translations/zh_CN/dev-tools/
H A Dkcsan.rst88 * KCSAN 支持使用 ``data_race(expr)`` 注解，这个注解告诉 KCSAN 任何由访问
92 * 与 ``data_race(...)`` 相似，可以使用类型限定符 ``__data_racy`` 来标记一个变量
/linux/arch/powerpc/kernel/
H A Dinterrupt.c172 if (!data_race(warned)) { in check_return_regs_valid()
173 data_race(warned = true); in check_return_regs_valid()
/linux/io_uring/
H A Dfdinfo.c87 seq_printf(m, "CachedSqHead:\t%u\n", data_race(ctx->cached_sq_head)); in __io_uring_show_fdinfo()
91 seq_printf(m, "CachedCqTail:\t%u\n", data_race(ctx->cached_cq_tail)); in __io_uring_show_fdinfo()
H A Dtw.c225 if (data_race(ctx->int_flags) & IO_RING_F_HAS_EVFD) in io_req_local_work_add()
H A Dtctx.c149 if (data_race(ctx->int_flags) & IO_RING_F_IOWQ_LIMITS_SET) { in __io_uring_add_tctx_node()
/linux/mm/
H A Dvma_init.c59 data_race(memcpy(&dest->shared, &src->shared, sizeof(dest->shared))); in vm_area_init_from()
H A Dslab.h135 if (data_race(page->page_type >> 24) != PGTY_slab) in page_slab()
/linux/kernel/kcsan/
H A Ddebugfs.c157 if (data_race(report_filterlist.used == report_filterlist.size)) { in insert_report_filterlist()
/linux/tools/testing/vma/include/
H A Dstubs.h32 #define data_race(expr) expr macro
/linux/kernel/locking/
H A Dlocktorture.c1006 long max = 0, min = statp ? data_race(statp[0].n_lock_acquired) : 0; in __torture_print_stats()
1011 if (data_race(statp[i].n_lock_fail)) in __torture_print_stats()
1013 cur = data_race(statp[i].n_lock_acquired); in __torture_print_stats()
H A Dww_mutex.h459 has_waiters = data_race(__ww_mutex_has_waiters(&lock->base)); in ww_mutex_set_context_fastpath()
/linux/kernel/rcu/
H A Dsrcutree.c2058 u0 = data_race(atomic_long_read(&sdp->srcu_ctrs[!idx].srcu_unlocks)); in srcu_torture_stats_print()
2059 u1 = data_race(atomic_long_read(&sdp->srcu_ctrs[idx].srcu_unlocks)); in srcu_torture_stats_print()
2067 l0 = data_race(atomic_long_read(&sdp->srcu_ctrs[!idx].srcu_locks)); in srcu_torture_stats_print()
2068 l1 = data_race(atomic_long_read(&sdp->srcu_ctrs[idx].srcu_locks)); in srcu_torture_stats_print()
/linux/kernel/irq/
H A Dirqdesc.c1010 return data_race(desc->tot_count); in kstat_irqs_desc()
1013 sum += data_race(per_cpu(desc->kstat_irqs->cnt, cpu)); in kstat_irqs_desc()
/linux/drivers/net/wireless/ath/ath9k/
H A Dwmi.c159 if (!data_race(priv->initialized)) { in ath9k_wmi_event_tasklet()
/linux/mm/kfence/
H A Dcore.c1295 distance = addr - data_race(meta->addr + meta->size); in kfence_handle_page_fault()
1301 if (!to_report || distance > data_race(meta->addr) - addr) in kfence_handle_page_fault()
/linux/net/9p/
H A Dtrans_fd.c739 data_race(ts->rd->f_flags |= O_NONBLOCK); in p9_fd_open()
745 data_race(ts->wr->f_flags |= O_NONBLOCK); in p9_fd_open()
/linux/drivers/rtc/
H A Ddev.c207 data = data_race(rtc->irq_data); in rtc_dev_poll()

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