From: Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com>
To: herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org
Cc: linux-crypto@vger.kernel.org, qat-linux@intel.com,
andriy.shevchenko@intel.com, alx.manpages@gmail.com,
Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com>,
Giovanni Cabiddu <giovanni.cabiddu@intel.com>,
Andy Shevchenko <andy.shevchenko@gmail.com>
Subject: [PATCH 2/4] linux/array_size.h: Add ARRAY_SIZE_OF_FIELD()
Date: Thu, 17 Aug 2023 16:33:15 +0200 [thread overview]
Message-ID: <20230817143352.132583-3-lucas.segarra.fernandez@intel.com> (raw)
In-Reply-To: <20230817143352.132583-1-lucas.segarra.fernandez@intel.com>
Introduce ARRAY_SIZE_OF_FIELD() in order to get the number of elements
of an array struct field.
Signed-off-by: Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
include/linux/array_size.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/array_size.h b/include/linux/array_size.h
index 06d7d83196ca..37dac0473b5c 100644
--- a/include/linux/array_size.h
+++ b/include/linux/array_size.h
@@ -10,4 +10,12 @@
*/
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
+/*
+ * ARRAY_SIZE_OF_FIELD - get the number of elements of an array struct field
+ *
+ * @TYPE: The structure containing the field of interest
+ * @MEMBER: The array field to be sized
+ */
+#define ARRAY_SIZE_OF_FIELD(TYPE, MEMBER) ARRAY_SIZE((((TYPE *)0)->MEMBER))
+
#endif /* _LINUX_ARRAY_SIZE_H */
--
2.41.0
next prev parent reply other threads:[~2023-08-17 14:36 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-17 14:33 [PATCH 0/4] Add debugfs pm_status for qat driver Lucas Segarra Fernandez
2023-08-17 14:33 ` [PATCH 1/4] linux/array_size.h: Move ARRAY_SIZE(arr) to a separate header Lucas Segarra Fernandez
2023-08-17 20:24 ` Alejandro Colomar
2023-08-17 14:33 ` Lucas Segarra Fernandez [this message]
2023-08-17 20:34 ` [PATCH 2/4] linux/array_size.h: Add ARRAY_SIZE_OF_FIELD() Alejandro Colomar
2023-08-17 21:30 ` Andy Shevchenko
2023-08-17 22:03 ` Alejandro Colomar
2023-08-17 14:33 ` [PATCH 3/4] crypto: qat - refactor included headers Lucas Segarra Fernandez
2023-08-17 14:33 ` [PATCH 4/4] crypto: qat - add pm_status debugfs file Lucas Segarra Fernandez
2023-08-18 5:28 ` Herbert Xu
2023-08-18 8:46 ` Andy Shevchenko
2023-08-18 8:51 ` Herbert Xu
2023-08-20 19:52 ` [PATCH] linux/container_of.h: Add memberof() Alejandro Colomar
2023-08-21 11:18 ` Andy Shevchenko
2023-08-21 11:23 ` Alejandro Colomar
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