linux-kernel - [PATCH 03/41] x86: kill dump

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Date:   Mon, 29 Jun 2020 19:25:50 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        David Miller <davem@...emloft.net>,
        Tony Luck <tony.luck@...el.com>, Will Deacon <will@...nel.org>
Subject: [PATCH 03/41] x86: kill dump_fpu()

From: Al Viro <viro@...iv.linux.org.uk>

dead since the removal of aout coredump support...

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 arch/x86/include/asm/fpu/internal.h |  1 -
 arch/x86/kernel/fpu/regset.c        | 16 ----------------
 2 files changed, 17 deletions(-)

diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h
index 42159f45bf9c..0c85a08176c0 100644
--- a/arch/x86/include/asm/fpu/internal.h
+++ b/arch/x86/include/asm/fpu/internal.h
@@ -34,7 +34,6 @@ extern int  fpu__copy(struct task_struct *dst, struct task_struct *src);
 extern void fpu__clear_user_states(struct fpu *fpu);
 extern void fpu__clear_all(struct fpu *fpu);
 extern int  fpu__exception_code(struct fpu *fpu, int trap_nr);
-extern int  dump_fpu(struct pt_regs *ptregs, struct user_i387_struct *fpstate);
 
 /*
  * Boot time FPU initialization functions:
diff --git a/arch/x86/kernel/fpu/regset.c b/arch/x86/kernel/fpu/regset.c
index bd1d0649f8ce..91f80aca27fb 100644
--- a/arch/x86/kernel/fpu/regset.c
+++ b/arch/x86/kernel/fpu/regset.c
@@ -356,20 +356,4 @@ int fpregs_set(struct task_struct *target, const struct user_regset *regset,
 	return ret;
 }
 
-/*
- * FPU state for core dumps.
- * This is only used for a.out dumps now.
- * It is declared generically using elf_fpregset_t (which is
- * struct user_i387_struct) but is in fact only used for 32-bit
- * dumps, so on 64-bit it is really struct user_i387_ia32_struct.
- */
-int dump_fpu(struct pt_regs *regs, struct user_i387_struct *ufpu)
-{
-	struct task_struct *tsk = current;
-
-	return !fpregs_get(tsk, NULL, 0, sizeof(struct user_i387_ia32_struct),
-			   ufpu, NULL);
-}
-EXPORT_SYMBOL(dump_fpu);
-
 #endif	/* CONFIG_X86_32 || CONFIG_IA32_EMULATION */
-- 
2.11.0