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From: guoren@kernel.org
To: arnd@arndb.de
Cc: linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org,
	Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH 01/11] csky: Fixup init_fpu compile warning with __init
Date: Fri,  3 Apr 2020 12:41:40 +0800	[thread overview]
Message-ID: <20200403044150.20562-1-guoren@kernel.org> (raw)

From: Guo Ren <guoren@linux.alibaba.com>

WARNING: vmlinux.o(.text+0x2366): Section mismatch in reference from the
function csky_start_secondary() to the function .init.text:init_fpu()

The function csky_start_secondary() references
the function __init init_fpu().
This is often because csky_start_secondary lacks a __init
annotation or the annotation of init_fpu is wrong.

Reported-by: Lu Chongzhi <chongzhi.lcz@alibaba-inc.com>
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
---
 arch/csky/abiv2/fpu.c         | 5 -----
 arch/csky/abiv2/inc/abi/fpu.h | 3 ++-
 arch/csky/kernel/smp.c        | 3 +++
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/arch/csky/abiv2/fpu.c b/arch/csky/abiv2/fpu.c
index 86d187d4e5af..5acc5c2e544e 100644
--- a/arch/csky/abiv2/fpu.c
+++ b/arch/csky/abiv2/fpu.c
@@ -10,11 +10,6 @@
 #define MTCR_DIST	0xC0006420
 #define MFCR_DIST	0xC0006020
 
-void __init init_fpu(void)
-{
-	mtcr("cr<1, 2>", 0);
-}
-
 /*
  * fpu_libc_helper() is to help libc to excute:
  *  - mfcr %a, cr<1, 2>
diff --git a/arch/csky/abiv2/inc/abi/fpu.h b/arch/csky/abiv2/inc/abi/fpu.h
index 22ca3cf2794a..09e2700a3693 100644
--- a/arch/csky/abiv2/inc/abi/fpu.h
+++ b/arch/csky/abiv2/inc/abi/fpu.h
@@ -9,7 +9,8 @@
 
 int fpu_libc_helper(struct pt_regs *regs);
 void fpu_fpe(struct pt_regs *regs);
-void __init init_fpu(void);
+
+static inline void init_fpu(void) { mtcr("cr<1, 2>", 0); }
 
 void save_to_user_fp(struct user_fp *user_fp);
 void restore_from_user_fp(struct user_fp *user_fp);
diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c
index 0bb0954d5570..df2e2174dbd0 100644
--- a/arch/csky/kernel/smp.c
+++ b/arch/csky/kernel/smp.c
@@ -22,6 +22,9 @@
 #include <asm/sections.h>
 #include <asm/mmu_context.h>
 #include <asm/pgalloc.h>
+#ifdef CONFIG_CPU_HAS_FPU
+#include <abi/fpu.h>
+#endif
 
 struct ipi_data_struct {
 	unsigned long bits ____cacheline_aligned;
-- 
2.17.0


             reply	other threads:[~2020-04-03  4:42 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-03  4:41 guoren [this message]
2020-04-03  4:41 ` [PATCH 02/11] csky: Implement ptrace regs and stack API guoren
2020-04-03  4:41 ` [PATCH 03/11] csky: Add support for restartable sequence guoren
2020-04-03  4:41 ` [PATCH 04/11] csky: Implement ftrace with regs guoren
2020-04-03  4:41 ` [PATCH 05/11] csky/ftrace: Fixup ftrace_modify_code deadlock without CPU_HAS_ICACHE_INS guoren
2020-04-03  4:41 ` [PATCH 06/11] csky: Fixup get wrong psr value from phyical reg guoren
2020-04-03  4:41 ` [PATCH 07/11] csky: Enable the gcov function guoren
2020-04-03  4:41 ` [PATCH 08/11] csky: Enable LOCKDEP_SUPPORT guoren
2020-04-03  4:41 ` [PATCH 09/11] csky: Add kprobes supported guoren
2020-04-03  4:41 ` [PATCH 10/11] csky: Add uprobes support guoren
2020-04-03  4:41 ` [PATCH 11/11] csky: Fixup cpu speculative execution to IO area guoren

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