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ae31573843
Introduce a rseq-x86-bits.h template header which is internally included to generate the static inline functions covering: - relaxed and release memory ordering, - per-cpu-id and per-mm-cid per-cpu data access. This introduces changes to the rseq.h selftests API which require to update the rseq selftest programs. Similar API/templating changes need to be done for other architectures. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20221122203932.231377-12-mathieu.desnoyers@efficios.com
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* rseq-bits-template.h
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*
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* (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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*/
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#ifdef RSEQ_TEMPLATE_CPU_ID
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# define RSEQ_TEMPLATE_CPU_ID_OFFSET RSEQ_CPU_ID_OFFSET
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# define RSEQ_TEMPLATE_CPU_ID_FIELD cpu_id
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# ifdef RSEQ_TEMPLATE_MO_RELEASE
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# define RSEQ_TEMPLATE_SUFFIX _release_cpu_id
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# elif defined (RSEQ_TEMPLATE_MO_RELAXED)
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# define RSEQ_TEMPLATE_SUFFIX _relaxed_cpu_id
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# else
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# error "Never use <rseq-bits-template.h> directly; include <rseq.h> instead."
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# endif
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#elif defined(RSEQ_TEMPLATE_MM_CID)
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# define RSEQ_TEMPLATE_CPU_ID_OFFSET RSEQ_MM_CID_OFFSET
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# define RSEQ_TEMPLATE_CPU_ID_FIELD mm_cid
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# ifdef RSEQ_TEMPLATE_MO_RELEASE
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# define RSEQ_TEMPLATE_SUFFIX _release_mm_cid
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# elif defined (RSEQ_TEMPLATE_MO_RELAXED)
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# define RSEQ_TEMPLATE_SUFFIX _relaxed_mm_cid
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# else
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# error "Never use <rseq-bits-template.h> directly; include <rseq.h> instead."
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# endif
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#elif defined (RSEQ_TEMPLATE_CPU_ID_NONE)
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# ifdef RSEQ_TEMPLATE_MO_RELEASE
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# define RSEQ_TEMPLATE_SUFFIX _release
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# elif defined (RSEQ_TEMPLATE_MO_RELAXED)
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# define RSEQ_TEMPLATE_SUFFIX _relaxed
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# else
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# error "Never use <rseq-bits-template.h> directly; include <rseq.h> instead."
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# endif
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#else
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# error "Never use <rseq-bits-template.h> directly; include <rseq.h> instead."
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#endif
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#define RSEQ_TEMPLATE_IDENTIFIER(x) RSEQ_COMBINE_TOKENS(x, RSEQ_TEMPLATE_SUFFIX)
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