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| author | Paul Heidekrüger <paul.heidekrueger@tum.de> | 2023-11-09 18:51:00 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-11 03:51:40 +0300 |
| commit | 83a6fdd6c27d4f6f51fa1092805676b24e0f8827 (patch) | |
| tree | e09dd10b8e32bbc4e11b46ccb3b75d672dd6c00a /lib/Kconfig.kasan | |
| parent | 932b59e3beaefefb1a0bd65f1bb3f9e2000d7315 (diff) | |
| download | linux-83a6fdd6c27d4f6f51fa1092805676b24e0f8827.tar.xz | |
kasan: default to inline instrumentation
KASan inline instrumentation can yield up to a 2x performance gain at the
cost of a larger binary.
Make inline instrumentation the default, as suggested in the bug report
below.
When an architecture does not support inline instrumentation, it should
set ARCH_DISABLE_KASAN_INLINE, as done by PowerPC, for instance.
Link: https://lkml.kernel.org/r/20231109155101.186028-1-paul.heidekrueger@tum.de
Signed-off-by: Paul Heidekrüger <paul.heidekrueger@tum.de>
Reported-by: Andrey Konovalov <andreyknvl@gmail.com>
Reviewed-by: Marco Elver <elver@google.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=203495
Acked-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/Kconfig.kasan')
| -rw-r--r-- | lib/Kconfig.kasan | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index fdca89c05745..935eda08b1e1 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -134,7 +134,7 @@ endchoice choice prompt "Instrumentation type" depends on KASAN_GENERIC || KASAN_SW_TAGS - default KASAN_OUTLINE + default KASAN_INLINE if !ARCH_DISABLE_KASAN_INLINE config KASAN_OUTLINE bool "Outline instrumentation" |