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Commit 59c3f82a authored Oct 14, 2018 by Bartosz Golaszewski Committed by Greg Kroah-Hartman Oct 16, 2018

mm: move is_kernel_rodata() to asm-generic/sections.h



Export this routine so that we can use it later in devm_kstrdup_const()
and devm_kfree().

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 0571967d

include/asm-generic/sections.h

+14 −0

Original line number	Diff line number	Diff line
		@@ -141,4 +141,18 @@ static inline bool init_section_intersects(void *virt, size_t size)
		return memory_intersects(__init_begin, __init_end, virt, size);
		}

		/**
		* is_kernel_rodata - checks if the pointer address is located in the
		* .rodata section
		*
		* @addr: address to check
		*
		* Returns: true if the address is located in .rodata, false otherwise.
		*/
		static inline bool is_kernel_rodata(unsigned long addr)
		{
		return addr >= (unsigned long)__start_rodata &&
		addr < (unsigned long)__end_rodata;
		}

		#endif /* _ASM_GENERIC_SECTIONS_H_ */

mm/util.c

+0 −7

Original line number	Diff line number	Diff line
		@@ -15,17 +15,10 @@
		#include <linux/vmalloc.h>
		#include <linux/userfaultfd_k.h>

		#include <asm/sections.h>
		#include <linux/uaccess.h>

		#include "internal.h"

		static inline int is_kernel_rodata(unsigned long addr)
		{
		return addr >= (unsigned long)__start_rodata &&
		addr < (unsigned long)__end_rodata;
		}

		/**
		* kfree_const - conditionally free memory
		* @x: pointer to the memory