From:   Jisheng Zhang <jszhang@kernel.org>
To:     Palmer Dabbelt <palmer@dabbelt.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Anup Patel <anup@brainfault.org>,
        Atish Patra <atishp@atishpatra.org>,
        Heiko Stuebner <heiko@sntech.de>,
        Andrew Jones <ajones@ventanamicro.com>,
        Conor Dooley <conor.dooley@microchip.com>
Cc:     linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
        kvm@vger.kernel.org, kvm-riscv@lists.infradead.org
Subject: [PATCH v5 07/13] riscv: module: move find_section to module.h
Date:   Sun, 29 Jan 2023 01:28:50 +0800
Message-Id: <20230128172856.3814-8-jszhang@kernel.org>
In-Reply-To: <20230128172856.3814-1-jszhang@kernel.org>
References: <20230128172856.3814-1-jszhang@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Move find_section() to module.h so that the implementation can be shared
by the alternatives code. This will allow us to use alternatives in
the vdso.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
 arch/riscv/include/asm/module.h | 16 ++++++++++++++++
 arch/riscv/kernel/module.c      | 15 ---------------
 2 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/arch/riscv/include/asm/module.h b/arch/riscv/include/asm/module.h
index 76aa96a9fc08..0f3baaa6a9a8 100644
--- a/arch/riscv/include/asm/module.h
+++ b/arch/riscv/include/asm/module.h
@@ -5,6 +5,7 @@
 #define _ASM_RISCV_MODULE_H
 
 #include <asm-generic/module.h>
+#include <linux/elf.h>
 
 struct module;
 unsigned long module_emit_got_entry(struct module *mod, unsigned long val);
@@ -111,4 +112,19 @@ static inline struct plt_entry *get_plt_entry(unsigned long val,
 
 #endif /* CONFIG_MODULE_SECTIONS */
 
+static inline const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
+					   const Elf_Shdr *sechdrs,
+					   const char *name)
+{
+	const Elf_Shdr *s, *se;
+	const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
+
+	for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++) {
+		if (strcmp(name, secstrs + s->sh_name) == 0)
+			return s;
+	}
+
+	return NULL;
+}
+
 #endif /* _ASM_RISCV_MODULE_H */
diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c
index 91fe16bfaa07..76f4b9c2ec5b 100644
--- a/arch/riscv/kernel/module.c
+++ b/arch/riscv/kernel/module.c
@@ -429,21 +429,6 @@ void *module_alloc(unsigned long size)
 }
 #endif
 
-static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
-				    const Elf_Shdr *sechdrs,
-				    const char *name)
-{
-	const Elf_Shdr *s, *se;
-	const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
-
-	for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++) {
-		if (strcmp(name, secstrs + s->sh_name) == 0)
-			return s;
-	}
-
-	return NULL;
-}
-
 int module_finalize(const Elf_Ehdr *hdr,
 		    const Elf_Shdr *sechdrs,
 		    struct module *me)
-- 
2.38.1