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| author |   Marco Elver <elver@google.com> | 2020-05-21 16:20:47 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 20:04:04 +0200 |
| commit | 1f44328ea24c9de368a3cfe5cc0e110b949afb2e (patch) | |
| tree | fbff59d7bd64b33183ed074567d35bf54133c9a2 /include | |
| parent | compiler.h: Move function attributes to compiler_types.h (diff) | |
| download | linux-dev-1f44328ea24c9de368a3cfe5cc0e110b949afb2e.tar.xz linux-dev-1f44328ea24c9de368a3cfe5cc0e110b949afb2e.zip | |
compiler_types.h, kasan: Use __SANITIZE_ADDRESS__ instead of CONFIG_KASAN to decide inlining
Use __always_inline in compilation units that have instrumentation
disabled (KASAN_SANITIZE_foo.o := n) for KASAN, like it is done for
KCSAN.
Also, add common documentation for KASAN and KCSAN explaining the
attribute.
[ bp: Massage commit message. ]
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20200521142047.169334-12-elver@google.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/compiler_types.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index 725cec6f56ea..21aed0981edf 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -171,7 +171,14 @@ struct ftrace_likely_data { */ #define noinline_for_stack noinline -#ifdef CONFIG_KASAN +/* + * Sanitizer helper attributes: Because using __always_inline and + * __no_sanitize_* conflict, provide helper attributes that will either expand + * to __no_sanitize_* in compilation units where instrumentation is enabled + * (__SANITIZE_*__), or __always_inline in compilation units without + * instrumentation (__SANITIZE_*__ undefined). + */ +#ifdef __SANITIZE_ADDRESS__ /* * We can't declare function 'inline' because __no_sanitize_address conflicts * with inlining. Attempt to inline it may cause a build failure. @@ -186,10 +193,6 @@ struct ftrace_likely_data { #define __no_kcsan __no_sanitize_thread #ifdef __SANITIZE_THREAD__ -/* - * Rely on __SANITIZE_THREAD__ instead of CONFIG_KCSAN, to avoid not inlining in - * compilation units where instrumentation is disabled. - */ # define __no_kcsan_or_inline __no_kcsan notrace __maybe_unused # define __no_sanitize_or_inline __no_kcsan_or_inline #else |