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Thu, 10 Oct 2024 09:27:25 -0700 (PDT) Received: from fan ([2601:646:8f03:9fee:c165:c800:4280:d79b]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-71e2aaba3a7sm1200121b3a.169.2024.10.10.09.27.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Oct 2024 09:27:24 -0700 (PDT) From: Fan Ni X-Google-Original-From: Fan Ni Date: Thu, 10 Oct 2024 09:27:03 -0700 To: Ira Weiny Cc: Dave Jiang , Jonathan Cameron , Navneet Singh , Jonathan Corbet , Andrew Morton , Dan Williams , Davidlohr Bueso , Alison Schofield , Vishal Verma , linux-btrfs@vger.kernel.org, linux-cxl@vger.kernel.org, linux-doc@vger.kernel.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 15/28] cxl/region: Refactor common create region code Message-ID: References: <20241007-dcd-type2-upstream-v4-0-c261ee6eeded@intel.com> <20241007-dcd-type2-upstream-v4-15-c261ee6eeded@intel.com> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241007-dcd-type2-upstream-v4-15-c261ee6eeded@intel.com> On Mon, Oct 07, 2024 at 06:16:21PM -0500, Ira Weiny wrote: > create_pmem_region_store() and create_ram_region_store() are identical > with the exception of the region mode. With the addition of DC region > mode this would end up being 3 copies of the same code. > > Refactor create_pmem_region_store() and create_ram_region_store() to use > a single common function to be used in subsequent DC code. > > Suggested-by: Fan Ni > Signed-off-by: Ira Weiny > --- Reviewed-by: Fan Ni > drivers/cxl/core/region.c | 28 +++++++++++----------------- > 1 file changed, 11 insertions(+), 17 deletions(-) > > diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c > index ab00203f285a..2ca6148d108c 100644 > --- a/drivers/cxl/core/region.c > +++ b/drivers/cxl/core/region.c > @@ -2552,9 +2552,8 @@ static struct cxl_region *__create_region(struct cxl_root_decoder *cxlrd, > return devm_cxl_add_region(cxlrd, id, mode, CXL_DECODER_HOSTONLYMEM); > } > > -static ssize_t create_pmem_region_store(struct device *dev, > - struct device_attribute *attr, > - const char *buf, size_t len) > +static ssize_t create_region_store(struct device *dev, const char *buf, > + size_t len, enum cxl_region_mode mode) > { > struct cxl_root_decoder *cxlrd = to_cxl_root_decoder(dev); > struct cxl_region *cxlr; > @@ -2564,31 +2563,26 @@ static ssize_t create_pmem_region_store(struct device *dev, > if (rc != 1) > return -EINVAL; > > - cxlr = __create_region(cxlrd, CXL_REGION_PMEM, id); > + cxlr = __create_region(cxlrd, mode, id); > if (IS_ERR(cxlr)) > return PTR_ERR(cxlr); > > return len; > } > + > +static ssize_t create_pmem_region_store(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t len) > +{ > + return create_region_store(dev, buf, len, CXL_REGION_PMEM); > +} > DEVICE_ATTR_RW(create_pmem_region); > > static ssize_t create_ram_region_store(struct device *dev, > struct device_attribute *attr, > const char *buf, size_t len) > { > - struct cxl_root_decoder *cxlrd = to_cxl_root_decoder(dev); > - struct cxl_region *cxlr; > - int rc, id; > - > - rc = sscanf(buf, "region%d\n", &id); > - if (rc != 1) > - return -EINVAL; > - > - cxlr = __create_region(cxlrd, CXL_REGION_RAM, id); > - if (IS_ERR(cxlr)) > - return PTR_ERR(cxlr); > - > - return len; > + return create_region_store(dev, buf, len, CXL_REGION_RAM); > } > DEVICE_ATTR_RW(create_ram_region); > > > -- > 2.46.0 > -- Fan Ni