* [PATCH 3.14 118/238] MIPS: ZBOOT: add missing <linux/string.h> include
[not found] <20141003212913.680985295@linuxfoundation.org>
@ 2014-10-03 21:30 ` Greg Kroah-Hartman
2014-10-03 21:30 ` [PATCH 3.14 119/238] MIPS: mcount: Adjust stack pointer for static trace in MIPS32 Greg Kroah-Hartman
1 sibling, 0 replies; 2+ messages in thread
From: Greg Kroah-Hartman @ 2014-10-03 21:30 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Aurelien Jarno, linux-mips,
Ralf Baechle
3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aurelien Jarno <aurelien@aurel32.net>
commit 29593fd5a8149462ed6fad0d522234facdaee6c8 upstream.
Commit dc4d7b37 (MIPS: ZBOOT: gather string functions into string.c)
moved the string related functions into a separate file, which might
cause the following build error, depending on the configuration:
| CC arch/mips/boot/compressed/decompress.o
| In file included from linux/arch/mips/boot/compressed/../../../../lib/decompress_unxz.c:234:0,
| from linux/arch/mips/boot/compressed/decompress.c:67:
| linux/arch/mips/boot/compressed/../../../../lib/xz/xz_dec_stream.c: In function 'fill_temp':
| linux/arch/mips/boot/compressed/../../../../lib/xz/xz_dec_stream.c:162:2: error: implicit declaration of function 'memcpy' [-Werror=implicit-function-declaration]
| cc1: some warnings being treated as errors
| linux/scripts/Makefile.build:308: recipe for target 'arch/mips/boot/compressed/decompress.o' failed
| make[6]: *** [arch/mips/boot/compressed/decompress.o] Error 1
| linux/arch/mips/Makefile:308: recipe for target 'vmlinuz' failed
It does not fail with the standard configuration, as when
CONFIG_DYNAMIC_DEBUG is not enabled <linux/string.h> gets included in
include/linux/dynamic_debug.h. There might be other ways for it to
get indirectly included.
We can't add the include directly in xz_dec_stream.c as some
architectures might want to use a different version for the boot/
directory (see for example arch/x86/boot/string.h).
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7420/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/boot/compressed/decompress.c | 1 +
1 file changed, 1 insertion(+)
--- a/arch/mips/boot/compressed/decompress.c
+++ b/arch/mips/boot/compressed/decompress.c
@@ -13,6 +13,7 @@
#include <linux/types.h>
#include <linux/kernel.h>
+#include <linux/string.h>
#include <asm/addrspace.h>
^ permalink raw reply [flat|nested] 2+ messages in thread* [PATCH 3.14 119/238] MIPS: mcount: Adjust stack pointer for static trace in MIPS32
[not found] <20141003212913.680985295@linuxfoundation.org>
2014-10-03 21:30 ` [PATCH 3.14 118/238] MIPS: ZBOOT: add missing <linux/string.h> include Greg Kroah-Hartman
@ 2014-10-03 21:30 ` Greg Kroah-Hartman
1 sibling, 0 replies; 2+ messages in thread
From: Greg Kroah-Hartman @ 2014-10-03 21:30 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Markos Chandras, linux-mips,
Ralf Baechle
3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Markos Chandras <markos.chandras@imgtec.com>
commit 8a574cfa2652545eb95595d38ac2a0bb501af0ae upstream.
Every mcount() call in the MIPS 32-bit kernel is done as follows:
[...]
move at, ra
jal _mcount
addiu sp, sp, -8
[...]
but upon returning from the mcount() function, the stack pointer
is not adjusted properly. This is explained in details in 58b69401c797
(MIPS: Function tracer: Fix broken function tracing).
Commit ad8c396936e3 ("MIPS: Unbreak function tracer for 64-bit kernel.)
fixed the stack manipulation for 64-bit but it didn't fix it completely
for MIPS32.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7792/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/kernel/mcount.S | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/arch/mips/kernel/mcount.S
+++ b/arch/mips/kernel/mcount.S
@@ -123,7 +123,11 @@ NESTED(_mcount, PT_SIZE, ra)
nop
#endif
b ftrace_stub
+#ifdef CONFIG_32BIT
+ addiu sp, sp, 8
+#else
nop
+#endif
static_trace:
MCOUNT_SAVE_REGS
@@ -133,6 +137,9 @@ static_trace:
move a1, AT /* arg2: parent's return address */
MCOUNT_RESTORE_REGS
+#ifdef CONFIG_32BIT
+ addiu sp, sp, 8
+#endif
.globl ftrace_stub
ftrace_stub:
RETURN_BACK
@@ -177,6 +184,11 @@ NESTED(ftrace_graph_caller, PT_SIZE, ra)
jal prepare_ftrace_return
nop
MCOUNT_RESTORE_REGS
+#ifndef CONFIG_DYNAMIC_FTRACE
+#ifdef CONFIG_32BIT
+ addiu sp, sp, 8
+#endif
+#endif
RETURN_BACK
END(ftrace_graph_caller)
^ permalink raw reply [flat|nested] 2+ messages in thread