The patch titled
Subject: kasan: inline random_tag for HW_TAGS
has been removed from the -mm tree. Its filename was
kasan-inline-random_tag-for-hw_tags.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Subject: kasan: inline random_tag for HW_TAGS
Using random_tag() currently results in a function call. Move its
definition to mm/kasan/kasan.h and turn it into a static inline function
for hardware tag-based mode to avoid uneeded function calls.
Link: https://lkml.kernel.org/r/be438471690e351e1d792e6bb432e8c03ccb15d3.1606162397.git.andreyknvl@xxxxxxxxxx
Link: https://linux-review.googlesource.com/id/Iac5b2faf9a912900e16cca6834d621f5d4abf427
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Reviewed-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Tested-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Branislav Rankov <Branislav.Rankov@xxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Evgenii Stepanov <eugenis@xxxxxxxxxx>
Cc: Kevin Brodsky <kevin.brodsky@xxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/hw_tags.c | 5 -----
mm/kasan/kasan.h | 31 ++++++++++++++-----------------
2 files changed, 14 insertions(+), 22 deletions(-)
--- a/mm/kasan/hw_tags.c~kasan-inline-random_tag-for-hw_tags
+++ a/mm/kasan/hw_tags.c
@@ -42,11 +42,6 @@ void unpoison_range(const void *address,
round_up(size, KASAN_GRANULE_SIZE), get_tag(address));
}
-u8 random_tag(void)
-{
- return hw_get_random_tag();
-}
-
bool check_invalid_free(void *addr)
{
u8 ptr_tag = get_tag(addr);
--- a/mm/kasan/kasan.h~kasan-inline-random_tag-for-hw_tags
+++ a/mm/kasan/kasan.h
@@ -190,6 +190,12 @@ static inline bool addr_has_metadata(con
#endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
+#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
+void print_tags(u8 addr_tag, const void *addr);
+#else
+static inline void print_tags(u8 addr_tag, const void *addr) { }
+#endif
+
bool check_invalid_free(void *addr);
void *find_first_bad_addr(void *addr, size_t size);
@@ -225,23 +231,6 @@ static inline void quarantine_reduce(voi
static inline void quarantine_remove_cache(struct kmem_cache *cache) { }
#endif
-#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
-
-void print_tags(u8 addr_tag, const void *addr);
-
-u8 random_tag(void);
-
-#else
-
-static inline void print_tags(u8 addr_tag, const void *addr) { }
-
-static inline u8 random_tag(void)
-{
- return 0;
-}
-
-#endif
-
#ifndef arch_kasan_set_tag
static inline const void *arch_kasan_set_tag(const void *addr, u8 tag)
{
@@ -281,6 +270,14 @@ static inline const void *arch_kasan_set
#endif /* CONFIG_KASAN_HW_TAGS */
+#ifdef CONFIG_KASAN_SW_TAGS
+u8 random_tag(void);
+#elif defined(CONFIG_KASAN_HW_TAGS)
+static inline u8 random_tag(void) { return hw_get_random_tag(); }
+#else
+static inline u8 random_tag(void) { return 0; }
+#endif
+
/*
* Exported functions for interfaces called from assembly or from generated
* code. Declarations here to avoid warning about missing declarations.
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are
