linux-kernel - [PATCH v11 4/4] cpumask: Add assign cpu

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Message-Id: <20240212-fencei-v11-4-e1327f25fe10@rivosinc.com>
Date: Mon, 12 Feb 2024 15:36:29 -0800
From: Charlie Jenkins <charlie@...osinc.com>
To: Paul Walmsley <paul.walmsley@...ive.com>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Jonathan Corbet <corbet@....net>, Conor Dooley <conor.dooley@...rochip.com>, 
 Clément Léger <cleger@...osinc.com>, 
 Atish Patra <atishp@...shpatra.org>, Randy Dunlap <rdunlap@...radead.org>, 
 Alexandre Ghiti <alex@...ti.fr>
Cc: linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-doc@...r.kernel.org, Charlie Jenkins <charlie@...osinc.com>
Subject: [PATCH v11 4/4] cpumask: Add assign cpu

Standardize an assign_cpu function for cpumasks.

Signed-off-by: Charlie Jenkins <charlie@...osinc.com>
---
 arch/riscv/mm/cacheflush.c |  2 +-
 include/linux/cpumask.h    | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c
index 6513a0ab8655..d10c2cba8aff 100644
--- a/arch/riscv/mm/cacheflush.c
+++ b/arch/riscv/mm/cacheflush.c
@@ -234,7 +234,7 @@ int riscv_set_icache_flush_ctx(unsigned long ctx, unsigned long scope)
 			stale_cpu = cpumask_test_cpu(smp_processor_id(), mask);
 
 			cpumask_setall(mask);
-			assign_bit(cpumask_check(smp_processor_id()), cpumask_bits(mask), stale_cpu);
+			cpumask_assign_cpu(smp_processor_id(), mask, stale_cpu);
 			break;
 		case PR_RISCV_SCOPE_PER_THREAD:
 			current->thread.force_icache_flush = false;
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index cfb545841a2c..1b85e09c4ba5 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -492,6 +492,22 @@ static __always_inline void __cpumask_clear_cpu(int cpu, struct cpumask *dstp)
 	__clear_bit(cpumask_check(cpu), cpumask_bits(dstp));
 }
 
+/**
+ * cpumask_assign_cpu - assign a cpu in a cpumask
+ * @cpu: cpu number (< nr_cpu_ids)
+ * @dstp: the cpumask pointer
+ * @bool: the value to assign
+ */
+static __always_inline void cpumask_assign_cpu(int cpu, struct cpumask *dstp, bool value)
+{
+	assign_bit(cpumask_check(cpu), cpumask_bits(dstp), value);
+}
+
+static __always_inline void __cpumask_assign_cpu(int cpu, struct cpumask *dstp, bool value)
+{
+	__assign_bit(cpumask_check(cpu), cpumask_bits(dstp), value);
+}
+
 /**
  * cpumask_test_cpu - test for a cpu in a cpumask
  * @cpu: cpu number (< nr_cpu_ids)

-- 
2.43.0