From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peng Liu Date: Fri, 06 May 2022 01:58:00 +0000 Subject: [PATCH 1/2] include/linux/nodemask.h: create node_available() helper Message-Id: <20220506015801.757918-2-liupeng256@huawei.com> List-Id: References: <20220506015801.757918-1-liupeng256@huawei.com> In-Reply-To: <20220506015801.757918-1-liupeng256@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: bhelgaas@google.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, lorenzo.pieralisi@arm.com, guohanjun@huawei.com, sudeep.holla@arm.com, rafael@kernel.org, lenb@kernel.org, akpm@linux-foundation.org, logang@deltatee.com, martin.oliveira@eideticom.com, thunder.leizhen@huawei.com, axboe@kernel.dk, kch@nvidia.com, ming.lei@redhat.com, shinichiro.kawasaki@wdc.com, mcgrof@kernel.org, jiangguoqing@kylinos.cn, jpittman@redhat.com, dave@stgolabs.net, liupeng256@huawei.com, wangkefeng.wang@huawei.com, linux-block@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org Lots of code dose node != NUMA_NO_NODE && !node_online(node) or node = NUMA_NO_NODE || node_online(node) so create node_available to do this to simplify code. Signed-off-by: Peng Liu --- arch/ia64/hp/common/sba_iommu.c | 2 +- arch/x86/pci/acpi.c | 2 +- drivers/acpi/arm64/iort.c | 2 +- drivers/pci/pci-sysfs.c | 2 +- include/linux/nodemask.h | 3 +++ mm/mempolicy.c | 2 +- 6 files changed, 8 insertions(+), 5 deletions(-) diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c index 8ad6946521d8..da3a010bb5fb 100644 --- a/arch/ia64/hp/common/sba_iommu.c +++ b/arch/ia64/hp/common/sba_iommu.c @@ -1969,7 +1969,7 @@ sba_map_ioc_to_node(struct ioc *ioc, acpi_handle handle) unsigned int node; node = acpi_get_node(handle); - if (node != NUMA_NO_NODE && !node_online(node)) + if (!node_available(node)) node = NUMA_NO_NODE; ioc->node = node; diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 052f1d78a562..d4909daa44d9 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -254,7 +254,7 @@ static int pci_acpi_root_get_node(struct acpi_pci_root *root) dev_info(&device->dev, FW_BUG "no _PXM; falling back to node %d from hardware (may be inconsistent with ACPI node numbers)\n", node); } - if (node != NUMA_NO_NODE && !node_online(node)) + if (!node_available(node)) node = NUMA_NO_NODE; return node; diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index f2f8f05662de..bdf690010b97 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -1251,7 +1251,7 @@ static int __init arm_smmu_v3_set_proximity(struct device *dev, if (smmu->flags & ACPI_IORT_SMMU_V3_PXM_VALID) { int dev_node = pxm_to_node(smmu->pxm); - if (dev_node != NUMA_NO_NODE && !node_online(dev_node)) + if (!node_available(dev_node)) return -EINVAL; set_dev_node(dev, dev_node); diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index c263ffc5884a..502490d26c1d 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -344,7 +344,7 @@ static ssize_t numa_node_store(struct device *dev, if ((node < 0 && node != NUMA_NO_NODE) || node >= MAX_NUMNODES) return -EINVAL; - if (node != NUMA_NO_NODE && !node_online(node)) + if (!node_available(node)) return -EINVAL; add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK); diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 567c3ddba2c4..591201a1e646 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -70,6 +70,7 @@ * * int node_online(node) Is some node online? * int node_possible(node) Is some node possible? + * int node_available(node) Is some node available(online or NUMA_NO_NODE)? * * node_set_online(node) set bit 'node' in node_online_map * node_set_offline(node) clear bit 'node' in node_online_map @@ -510,6 +511,8 @@ static inline int node_random(const nodemask_t *mask) #define num_possible_nodes() num_node_state(N_POSSIBLE) #define node_online(node) node_state((node), N_ONLINE) #define node_possible(node) node_state((node), N_POSSIBLE) +#define node_available(node) \ + ((node) = NUMA_NO_NODE || node_state((node), N_ONLINE)) #define for_each_node(node) for_each_node_state(node, N_POSSIBLE) #define for_each_online_node(node) for_each_node_state(node, N_ONLINE) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 8c74107a2b15..7a31b006c5e8 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -141,7 +141,7 @@ int numa_map_to_online_node(int node) { int min_dist = INT_MAX, dist, n, min_node; - if (node = NUMA_NO_NODE || node_online(node)) + if (node_available(node)) return node; min_node = node; -- 2.25.1