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From: Yuan Tan <tanyuan@tinylab.org>
To: falcon@tinylab.org, arnd@arndb.de, linux-kernel@vger.kernel.org,
	linux-mips@vger.kernel.org, linux-riscv@lists.infradead.org,
	luc.vanoostenryck@gmail.com, linux-sparse@vger.kernel.org
Cc: linux@weissschuh.net, palmer@rivosinc.com,
	paul.walmsley@sifive.com, paulburton@kernel.org,
	paulmck@kernel.org, tim.bird@sony.com, tsbogend@alpha.franken.de,
	w@1wt.eu, tanyuan@tinylab.org, i@maskray.me
Subject: [PATCH v1 03/14] compiler: add unique __SECTION_NAME()
Date: Fri,  3 Nov 2023 23:58:59 +0800	[thread overview]
Message-ID: <3c10b123c7ec27fbd942dd9a07d877743616c935.1699025537.git.tanyuan@tinylab.org> (raw)
In-Reply-To: <cover.1699025537.git.tanyuan@tinylab.org>

From: Zhangjin Wu <falcon@tinylab.org>

The new section helper is added for LD_DEAD_CODE_DATA_ELIMINATION to
generate unique section name (strigified).

Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
Signed-off-by: Yuan Tan <tanyuan@tinylab.org>
---
 include/linux/compiler.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 405b19cf6cf3..5a9cc3209b12 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -227,11 +227,25 @@ static inline void *offset_to_ptr(const int *off)
 
 #endif /* __ASSEMBLY__ */
 
+/* Import __stringify. */
+#ifndef __stringify
+#include <linux/stringify.h>
+#endif
+
 /* Quite-unique ID. */
 #ifndef __QUITE_UNIQUE_ID
 # define __QUITE_UNIQUE_ID(prefix) __PASTE(__PASTE(prefix, __LINE__), __COUNTER__)
 #endif
 
+/* Quite-unique Section NAME. */
+#ifndef __SECTION_NAME
+#ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
+# define __SECTION_NAME(prefix) __stringify(__QUITE_UNIQUE_ID(prefix.))
+#else
+# define __SECTION_NAME(prefix) __stringify(prefix)
+#endif
+#endif
+
 /* &a[0] degrades to a pointer: a different type from an array */
 #define __must_be_array(a)	BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
 
-- 
2.34.1


WARNING: multiple messages have this Message-ID (diff)
From: Yuan Tan <tanyuan@tinylab.org>
To: falcon@tinylab.org, arnd@arndb.de, linux-kernel@vger.kernel.org,
	linux-mips@vger.kernel.org, linux-riscv@lists.infradead.org,
	luc.vanoostenryck@gmail.com, linux-sparse@vger.kernel.org
Cc: linux@weissschuh.net, palmer@rivosinc.com,
	paul.walmsley@sifive.com, paulburton@kernel.org,
	paulmck@kernel.org, tim.bird@sony.com, tsbogend@alpha.franken.de,
	w@1wt.eu, tanyuan@tinylab.org, i@maskray.me
Subject: [PATCH v1 03/14] compiler: add unique __SECTION_NAME()
Date: Fri,  3 Nov 2023 23:58:59 +0800	[thread overview]
Message-ID: <3c10b123c7ec27fbd942dd9a07d877743616c935.1699025537.git.tanyuan@tinylab.org> (raw)
In-Reply-To: <cover.1699025537.git.tanyuan@tinylab.org>

From: Zhangjin Wu <falcon@tinylab.org>

The new section helper is added for LD_DEAD_CODE_DATA_ELIMINATION to
generate unique section name (strigified).

Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
Signed-off-by: Yuan Tan <tanyuan@tinylab.org>
---
 include/linux/compiler.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 405b19cf6cf3..5a9cc3209b12 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -227,11 +227,25 @@ static inline void *offset_to_ptr(const int *off)
 
 #endif /* __ASSEMBLY__ */
 
+/* Import __stringify. */
+#ifndef __stringify
+#include <linux/stringify.h>
+#endif
+
 /* Quite-unique ID. */
 #ifndef __QUITE_UNIQUE_ID
 # define __QUITE_UNIQUE_ID(prefix) __PASTE(__PASTE(prefix, __LINE__), __COUNTER__)
 #endif
 
+/* Quite-unique Section NAME. */
+#ifndef __SECTION_NAME
+#ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
+# define __SECTION_NAME(prefix) __stringify(__QUITE_UNIQUE_ID(prefix.))
+#else
+# define __SECTION_NAME(prefix) __stringify(prefix)
+#endif
+#endif
+
 /* &a[0] degrades to a pointer: a different type from an array */
 #define __must_be_array(a)	BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
 
-- 
2.34.1


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http://lists.infradead.org/mailman/listinfo/linux-riscv

  parent reply	other threads:[~2023-11-03 15:59 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-03 15:56 [PATCH v1 00/14] DCE/DSE: Add Dead Syscalls Elimination support, part2 Yuan Tan
2023-11-03 15:56 ` Yuan Tan
2023-11-03 15:58 ` [PATCH v1 01/14] DCE/DSE: allow keep unique bounded sections Yuan Tan
2023-11-03 15:58   ` Yuan Tan
2023-11-03 15:58 ` [PATCH v1 02/14] compiler: add a global __QUITE_UNIQUE_ID() Yuan Tan
2023-11-03 15:58   ` Yuan Tan
2023-11-03 15:58 ` Yuan Tan [this message]
2023-11-03 15:58   ` [PATCH v1 03/14] compiler: add unique __SECTION_NAME() Yuan Tan
2023-11-03 15:59 ` [PATCH v1 04/14] compiler: add unique LABEL_NAME() Yuan Tan
2023-11-03 15:59   ` Yuan Tan
2023-11-03 15:59 ` [PATCH v1 05/14] DCE/DSE: add HAVE_SECTION_SHF_LINK_ORDER_SUPPORT option Yuan Tan
2023-11-03 15:59   ` Yuan Tan
2023-11-03 16:00 ` [PATCH v1 06/14] DCE/DSE: add HAVE_SECTION_SHF_GROUP_SUPPORT option Yuan Tan
2023-11-03 16:00   ` Yuan Tan
2023-11-03 16:00 ` [PATCH v1 07/14] DCE/DSE: add HAVE_SECTION_NO_KEEP_SUPPORT option Yuan Tan
2023-11-03 16:00   ` Yuan Tan
2023-11-03 16:00   ` Yuan Tan
2023-11-03 16:00   ` Yuan Tan
2023-11-03 16:01 ` [PATCH v1 08/14] DCE/DSE: add choice of methods to build reference for orphan sections Yuan Tan
2023-11-03 16:01   ` Yuan Tan
2023-11-05 21:35   ` Fangrui Song
2023-11-03 16:01 ` [PATCH v1 09/14] DCE/DSE: inhibit .size directive for SHF_GROUP Yuan Tan
2023-11-03 16:01   ` Yuan Tan
2023-11-05 20:50   ` Fangrui Song
2023-11-05 20:50   ` Fangrui Song
2023-11-13  7:19     ` Yuan Tan
2023-11-13  7:19       ` Yuan Tan
2023-11-03 16:02 ` [PATCH v1 10/14] DCE/DSE: riscv: make every ex_table's name unique Yuan Tan
2023-11-03 16:02   ` Yuan Tan
2023-11-03 16:02   ` Yuan Tan
2023-11-03 16:02   ` Yuan Tan
2023-11-05 21:13   ` Fangrui Song
2023-11-05 21:13   ` Fangrui Song
2023-11-03 16:02 ` [PATCH v1 11/14] DCE/DSE: riscv: build reference for .pushsection in C functions Yuan Tan
2023-11-03 16:02   ` Yuan Tan
2023-11-03 16:03 ` [PATCH v1 12/14] DCE/DSE: riscv: build reference for .pushsection in assembly Yuan Tan
2023-11-03 16:03   ` Yuan Tan
2023-11-03 16:04 ` [PATCH v1 13/14] DCE/DSE: add SECTION_NO_KEEP_SUPPORT option Yuan Tan
2023-11-03 16:04   ` Yuan Tan
2023-11-03 16:04 ` [PATCH v1 14/14] DCE/DSE: vmlinux.lds.h: allow NO_KEEP on __ex_table sections Yuan Tan
2023-11-03 16:04   ` Yuan Tan

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