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Sat, 29 Aug 2020 01:26:22 -0700 (PDT) From: SeongJae Park To: paulmck@kernel.org, corbet@lwn.net Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, SeongJae Park Subject: [PATCH v2 3/3] dics/memory-barriers.txt/kokr: Allow architecture to override the flush barrier Date: Sat, 29 Aug 2020 10:26:07 +0200 Message-Id: <20200829082607.3146-4-sj38.park@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200829082607.3146-1-sj38.park@gmail.com> References: <20200829082607.3146-1-sj38.park@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: SeongJae Park Translate this commit to Korean: 3e79f082ebfc ("libnvdimm/nvdimm/flush: Allow architecture to override the flush barrier") Signed-off-by: SeongJae Park Reviewed-by: Yunjae Lee --- .../translations/ko_KR/memory-barriers.txt | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/translations/ko_KR/memory-barriers.txt b/Documentation/translations/ko_KR/memory-barriers.txt index 291039d77694..64d932f5dc77 100644 --- a/Documentation/translations/ko_KR/memory-barriers.txt +++ b/Documentation/translations/ko_KR/memory-barriers.txt @@ -1904,6 +1904,19 @@ Mandatory 배리어들은 SMP 시스템에서도 UP 시스템에서도 SMP 효 "커널 I/O 배리어의 효과" 섹션을, consistent memory 에 대한 자세한 내용을 위해선 Documentation/core-api/dma-api.rst 문서를 참고하세요. + (*) pmem_wmb(); + + 이것은 persistent memory 를 위한 것으로, persistent 저장소에 가해진 변경 + 사항이 플랫폼 연속성 도메인에 도달했을 것을 보장하기 위한 것입니다. + + 예를 들어, 임시적이지 않은 pmem 영역으로의 쓰기 후, 우리는 쓰기가 플랫폼 + 연속성 도메인에 도달했을 것을 보장하기 위해 pmem_wmb() 를 사용합니다. + 이는 쓰기가 뒤따르는 instruction 들이 유발하는 어떠한 데이터 액세스나 + 데이터 전송의 시작 전에 persistent 저장소를 업데이트 했을 것을 보장합니다. + 이는 wmb() 에 의해 이뤄지는 순서 규칙을 포함합니다. + + Persistent memory 에서의 로드를 위해선 현재의 읽기 메모리 배리어로도 읽기 + 순서를 보장하는데 충분합니다. ========================= 암묵적 커널 메모리 배리어 -- 2.17.1