The patch titled
Subject: sections: move and rename core_kernel_data() to is_kernel_core_data()
has been added to the -mm tree. Its filename is
sections-move-and-rename-core_kernel_data-to-is_kernel_core_data.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/sections-move-and-rename-core_kernel_data-to-is_kernel_core_data.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/sections-move-and-rename-core_kernel_data-to-is_kernel_core_data.patch
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The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: sections: move and rename core_kernel_data() to is_kernel_core_data()
Move core_kernel_data() into sections.h and rename it to
is_kernel_core_data(), also make it return bool value, then update all the
callers.
Link: https://lkml.kernel.org/r/20210930071143.63410-4-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
Cc: Matt Turner <mattst88@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Petr Mladek <pmladek@xxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-generic/sections.h | 16 ++++++++++++++++
include/linux/kernel.h | 1 -
kernel/extable.c | 18 ------------------
kernel/trace/ftrace.c | 2 +-
net/sysctl_net.c | 2 +-
5 files changed, 18 insertions(+), 21 deletions(-)
--- a/include/asm-generic/sections.h~sections-move-and-rename-core_kernel_data-to-is_kernel_core_data
+++ a/include/asm-generic/sections.h
@@ -129,6 +129,22 @@ static inline bool init_section_intersec
}
/**
+ * is_kernel_core_data - checks if the pointer address is located in the
+ * .data section
+ *
+ * @addr: address to check
+ *
+ * Returns: true if the address is located in .data, false otherwise.
+ * Note: On some archs it may return true for core RODATA, and false
+ * for others. But will always be true for core RW data.
+ */
+static inline bool is_kernel_core_data(unsigned long addr)
+{
+ return addr >= (unsigned long)_sdata &&
+ addr < (unsigned long)_edata;
+}
+
+/**
* is_kernel_rodata - checks if the pointer address is located in the
* .rodata section
*
--- a/include/linux/kernel.h~sections-move-and-rename-core_kernel_data-to-is_kernel_core_data
+++ a/include/linux/kernel.h
@@ -230,7 +230,6 @@ extern char *next_arg(char *args, char *
extern int core_kernel_text(unsigned long addr);
extern int init_kernel_text(unsigned long addr);
-extern int core_kernel_data(unsigned long addr);
extern int __kernel_text_address(unsigned long addr);
extern int kernel_text_address(unsigned long addr);
extern int func_ptr_is_kernel_text(void *ptr);
--- a/kernel/extable.c~sections-move-and-rename-core_kernel_data-to-is_kernel_core_data
+++ a/kernel/extable.c
@@ -82,24 +82,6 @@ int notrace core_kernel_text(unsigned lo
return 0;
}
-/**
- * core_kernel_data - tell if addr points to kernel data
- * @addr: address to test
- *
- * Returns true if @addr passed in is from the core kernel data
- * section.
- *
- * Note: On some archs it may return true for core RODATA, and false
- * for others. But will always be true for core RW data.
- */
-int core_kernel_data(unsigned long addr)
-{
- if (addr >= (unsigned long)_sdata &&
- addr < (unsigned long)_edata)
- return 1;
- return 0;
-}
-
int __kernel_text_address(unsigned long addr)
{
if (kernel_text_address(addr))
--- a/kernel/trace/ftrace.c~sections-move-and-rename-core_kernel_data-to-is_kernel_core_data
+++ a/kernel/trace/ftrace.c
@@ -323,7 +323,7 @@ int __register_ftrace_function(struct ft
if (!ftrace_enabled && (ops->flags & FTRACE_OPS_FL_PERMANENT))
return -EBUSY;
- if (!core_kernel_data((unsigned long)ops))
+ if (!is_kernel_core_data((unsigned long)ops))
ops->flags |= FTRACE_OPS_FL_DYNAMIC;
add_ftrace_ops(&ftrace_ops_list, ops);
--- a/net/sysctl_net.c~sections-move-and-rename-core_kernel_data-to-is_kernel_core_data
+++ a/net/sysctl_net.c
@@ -144,7 +144,7 @@ static void ensure_safe_net_sysctl(struc
addr = (unsigned long)ent->data;
if (is_module_address(addr))
where = "module";
- else if (core_kernel_data(addr))
+ else if (is_kernel_core_data(addr))
where = "kernel";
else
continue;
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
slub-add-back-check-for-free-nonslab-objects.patch
mm-nommu-kill-arch_get_unmapped_area.patch
kallsyms-remove-arch-specific-text-and-data-check.patch
kallsyms-fix-address-checks-for-kernel-related-range.patch
sections-move-and-rename-core_kernel_data-to-is_kernel_core_data.patch
sections-move-is_kernel_inittext-into-sectionsh.patch
x86-mm-rename-__is_kernel_text-to-is_x86_32_kernel_text.patch
sections-provide-internal-__is_kernel-and-__is_kernel_text-helper.patch
mm-kasan-use-is_kernel-helper.patch
extable-use-is_kernel_text-helper.patch
powerpc-mm-use-core_kernel_text-helper.patch
microblaze-use-is_kernel_text-helper.patch
alpha-use-is_kernel_text-helper.patch
