linux-kernel - [PATCH 2/4 net-next] cpumask: define cleanup function for cpumasks

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Message-Id: <1704797478-32377-3-git-send-email-schakrabarti@linux.microsoft.com>
Date: Tue,  9 Jan 2024 02:51:16 -0800
From: Souradeep Chakrabarti <schakrabarti@...ux.microsoft.com>
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Subject: [PATCH 2/4 net-next] cpumask: define cleanup function for cpumasks

From: Yury Norov <yury.norov@...il.com>

Now we can simplify code that allocates cpumasks for local needs.

Signed-off-by: Yury Norov <yury.norov@...il.com>
---
 include/linux/cpumask.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 228c23eb36d2..1c29947db848 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -7,6 +7,7 @@
  * set of CPUs in a system, one bit position per CPU number.  In general,
  * only nr_cpu_ids (<= NR_CPUS) bits are valid.
  */
+#include <linux/cleanup.h>
 #include <linux/kernel.h>
 #include <linux/threads.h>
 #include <linux/bitmap.h>
@@ -990,6 +991,8 @@ static inline bool cpumask_available(cpumask_var_t mask)
 }
 #endif /* CONFIG_CPUMASK_OFFSTACK */
 
+DEFINE_FREE(free_cpumask_var, struct cpumask *, if (_T) free_cpumask_var(_T));
+
 /* It's common to want to use cpu_all_mask in struct member initializers,
  * so it has to refer to an address rather than a pointer. */
 extern const DECLARE_BITMAP(cpu_all_bits, NR_CPUS);
-- 
2.34.1