kasan, arm64: rename kasan_init_tags and mark as __init

Rename kasan_init_tags() to kasan_init_sw_tags() as the upcoming hardware
tag-based KASAN mode will have its own initialization routine.  Also
similarly to kasan_init() mark kasan_init_tags() as __init.

Link: https://lkml.kernel.org/r/71e52af72a09f4b50c8042f16101c60e50649fbb.1606161801.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Marco Elver <elver@google.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index c44eb4b..c18aacd 100644 (file)
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -358,7 +358,7 @@ void __init __no_sanitize_address setup_arch(char **cmdline_p)
        smp_build_mpidr_hash();
 
        /* Init percpu seeds for random tags after cpus are set up. */
-       kasan_init_tags();
+       kasan_init_sw_tags();
 
 #ifdef CONFIG_ARM64_SW_TTBR0_PAN
        /*

diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c
index e35ce04..d8e66c7 100644 (file)
--- a/arch/arm64/mm/kasan_init.c
+++ b/arch/arm64/mm/kasan_init.c
@@ -283,7 +283,7 @@ void __init kasan_init(void)
        kasan_init_shadow();
        kasan_init_depth();
 #if defined(CONFIG_KASAN_GENERIC)
-       /* CONFIG_KASAN_SW_TAGS also requires kasan_init_tags(). */
+       /* CONFIG_KASAN_SW_TAGS also requires kasan_init_sw_tags(). */
        pr_info("KernelAddressSanitizer initialized\n");
 #endif
 }

diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index b272960..d7042d1 100644 (file)
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -192,7 +192,7 @@ static inline void kasan_record_aux_stack(void *ptr) {}
 
 #ifdef CONFIG_KASAN_SW_TAGS
 
-void kasan_init_tags(void);
+void __init kasan_init_sw_tags(void);
 
 void *kasan_reset_tag(const void *addr);
 
@@ -201,7 +201,7 @@ bool kasan_report(unsigned long addr, size_t size,
 
 #else /* CONFIG_KASAN_SW_TAGS */
 
-static inline void kasan_init_tags(void) { }
+static inline void kasan_init_sw_tags(void) { }
 
 static inline void *kasan_reset_tag(const void *addr)
 {

diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c
index 9445cf4..7317d52 100644 (file)
--- a/mm/kasan/sw_tags.c
+++ b/mm/kasan/sw_tags.c
@@ -35,7 +35,7 @@
 
 static DEFINE_PER_CPU(u32, prng_state);
 
-void kasan_init_tags(void)
+void __init kasan_init_sw_tags(void)
 {
        int cpu;