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Thu, 10 Oct 2024 10:59:02 -0700 (PDT) Received: from fan ([2601:646:8f03:9fee:c165:c800:4280:d79b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20c8c340106sm11950045ad.265.2024.10.10.10.58.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Oct 2024 10:59:02 -0700 (PDT) From: Fan Ni X-Google-Original-From: Fan Ni Date: Thu, 10 Oct 2024 10:58:56 -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 17/28] cxl/events: Split event msgnum configuration from irq setup Message-ID: References: <20241007-dcd-type2-upstream-v4-0-c261ee6eeded@intel.com> <20241007-dcd-type2-upstream-v4-17-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-v4-17-c261ee6eeded@intel.com> On Mon, Oct 07, 2024 at 06:16:23PM -0500, Ira Weiny wrote: > Dynamic Capacity Devices (DCD) require event interrupts to process > memory addition or removal. BIOS may have control over non-DCD event > processing. DCD interrupt configuration needs to be separate from > memory event interrupt configuration. > > Split cxl_event_config_msgnums() from irq setup in preparation for > separate DCD interrupts configuration. > > Signed-off-by: Ira Weiny > --- One minor comment inline; otherwise Reviewed-by: Fan Ni > drivers/cxl/pci.c | 24 ++++++++++++------------ > 1 file changed, 12 insertions(+), 12 deletions(-) > > diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c > index fc5ab74448cc..29a863331bec 100644 > --- a/drivers/cxl/pci.c > +++ b/drivers/cxl/pci.c > @@ -702,35 +702,31 @@ static int cxl_event_config_msgnums(struct cxl_memdev_state *mds, > return cxl_event_get_int_policy(mds, policy); > } > > -static int cxl_event_irqsetup(struct cxl_memdev_state *mds) > +static int cxl_event_irqsetup(struct cxl_memdev_state *mds, > + struct cxl_event_interrupt_policy *policy) > { > struct cxl_dev_state *cxlds = &mds->cxlds; > - struct cxl_event_interrupt_policy policy; > int rc; > > - rc = cxl_event_config_msgnums(mds, &policy); > - if (rc) > - return rc; > - > - rc = cxl_event_req_irq(cxlds, policy.info_settings); > + rc = cxl_event_req_irq(cxlds, policy->info_settings); > if (rc) { > dev_err(cxlds->dev, "Failed to get interrupt for event Info log\n"); > return rc; > } > > - rc = cxl_event_req_irq(cxlds, policy.warn_settings); > + rc = cxl_event_req_irq(cxlds, policy->warn_settings); > if (rc) { > dev_err(cxlds->dev, "Failed to get interrupt for event Warn log\n"); > return rc; > } > > - rc = cxl_event_req_irq(cxlds, policy.failure_settings); > + rc = cxl_event_req_irq(cxlds, policy->failure_settings); > if (rc) { > dev_err(cxlds->dev, "Failed to get interrupt for event Failure log\n"); > return rc; > } > > - rc = cxl_event_req_irq(cxlds, policy.fatal_settings); > + rc = cxl_event_req_irq(cxlds, policy->fatal_settings); > if (rc) { > dev_err(cxlds->dev, "Failed to get interrupt for event Fatal log\n"); > return rc; There is a lot of duplicate code here, can we simplify it by iteratting all setttings in cxl_event_interrrupt_policy like for setting in policy: rc = cxl_event_req_irq(cxlds, setting); if (rc) { ... } For DCD, handle the setup separately afterwards. Fan > @@ -749,7 +745,7 @@ static bool cxl_event_int_is_fw(u8 setting) > static int cxl_event_config(struct pci_host_bridge *host_bridge, > struct cxl_memdev_state *mds, bool irq_avail) > { > - struct cxl_event_interrupt_policy policy; > + struct cxl_event_interrupt_policy policy = { 0 }; > int rc; > > /* > @@ -777,11 +773,15 @@ static int cxl_event_config(struct pci_host_bridge *host_bridge, > return -EBUSY; > } > > + rc = cxl_event_config_msgnums(mds, &policy); > + if (rc) > + return rc; > + > rc = cxl_mem_alloc_event_buf(mds); > if (rc) > return rc; > > - rc = cxl_event_irqsetup(mds); > + rc = cxl_event_irqsetup(mds, &policy); > if (rc) > return rc; > > > -- > 2.46.0 > -- Fan Ni