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(unknown [10.28.36.165]) by maili.marvell.com (Postfix) with ESMTP id 70DB63F703F; Thu, 20 Aug 2026 01:53:49 -0700 (PDT) From: Ratheesh Kannoth To: , , , , CC: , , , , Ratheesh Kannoth Subject: [PATCH net] octeontx2: use GFP_ATOMIC for QMEM dma_alloc_attrs Date: Thu, 20 Aug 2026 14:23:47 +0530 Message-ID: <20260820085347.2672889-1-rkannoth@marvell.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-ORIG-GUID: wHDTHsQBmI9Arce0_9wlPfr3rCfFpITO X-Proofpoint-Spam-Info: AW1haW4tMjYwODIwMDA2MyBTYWx0ZWRfXxLCi95toEaYJ Djf1Kk2Kpg+KzeqxAk6KfvKjKDwHoE8SGwhJv7silx24FJumrORCOvBU0eQmwLND3M0RT5TrWYW AKMVUMB00f00oxMhnoC1hXta1Gn2P+c= X-Authority-Analysis: v=2.4 cv=Je6Ma0KV c=1 sm=1 tr=0 ts=6a86c0a1 cx=c_pps a=rEv8fa4AjpPjGxpoe8rlIQ==:117 a=rEv8fa4AjpPjGxpoe8rlIQ==:17 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=l0iWHRpgs5sLHlkKQ1IR:22 a=EAYMVhzMl8SCOHhVQcBL:22 a=M5GUcnROAAAA:8 a=WuudxapCgsahSltlGeoA:9 a=OBjm3rFKGHvpk9ecZwUJ:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODIwMDA2MyBTYWx0ZWRfXz1nu4VRJpKBz 0kp87q/XxSwhkHlnnNm2SUeo6/Nz2t7HQ9m0vBqrKuiGQ3PyDp/dSE9G0XJSESFedjY63Xt9ipl E3WzrmPe5umdcC4AOyk0xCyNobky9ckkdW0tDKffjKYoWHh1VEsP5IHV632jAG0ZqhJk6vVUqCj MLg625qBrzHXB/m96G2tjzGQloYlbwiGzIA7BcZNen8xrHgflDnqcMHi9aXohvgK3LBlO8E6yH0 TMY+5Njiuhb5HRNXkjM6rNXYzKi8uRBpQid59eV9SAwrUAW1oIj7zzgp37v/JNb57jYosd7pJLM 5sLnx2N3/cMscyZOBuskUX64UaDbVwnftwX/LWxlRh0YkjTaXTPL88VdNy7sd7EJ8dS/j5O7qMR x782+QtsLnzjWISy/ZtukrfKg/WUA6h5WxZVqiN8NfqpZ8+80IJM1Y5Er4bAGW/tSvrteQ2Nbge dfEdKlhcGB1XjW3VOrA== X-Proofpoint-GUID: wHDTHsQBmI9Arce0_9wlPfr3rCfFpITO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-19_06,2026-08-19_02,2025-10-01_01 From: Sunil Goutham Queue context memory for NIX/NPA and other qmem_alloc() users in the AF and NIC drivers is allocated via dma_alloc_attrs() with GFP_KERNEL. On platforms with CMA enabled, each attached interface can consume a large contiguous allocation from the CMA pool, making CMA sizing grow with the number of enabled interfaces. Use GFP_ATOMIC for the DMA backing allocation in qmem_alloc() to reduce pressure on the CMA pool when many interfaces are enabled. Fixes: 73d33dbc0723 ("octeontx2-af: Use DMA_ATTR_FORCE_CONTIGUOUS attribute in DMA alloc") Signed-off-by: Sunil Goutham Signed-off-by: Ratheesh Kannoth --- drivers/net/ethernet/marvell/octeontx2/af/common.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/common.h b/drivers/net/ethernet/marvell/octeontx2/af/common.h index 779413a383b7..ff5d66dd10f3 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/common.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/common.h @@ -61,7 +61,7 @@ static inline int qmem_alloc(struct device *dev, struct qmem **q, qmem->entry_sz = entry_sz; qmem->alloc_sz = (qsize * entry_sz) + OTX2_ALIGN; qmem->base = dma_alloc_attrs(dev, qmem->alloc_sz, &qmem->iova, - GFP_KERNEL, DMA_ATTR_FORCE_CONTIGUOUS); + GFP_ATOMIC, DMA_ATTR_FORCE_CONTIGUOUS); if (!qmem->base) return -ENOMEM; -- 2.43.0