From 50ff18ab497aa22f6a59444625df7508c8918237 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Tue, 18 Sep 2018 23:51:37 -0700 Subject: jump_label: Implement generic support for relative references To reduce the size taken up by absolute references in jump label entries themselves and the associated relocation records in the .init segment, add support for emitting them as relative references instead. Note that this requires some extra care in the sorting routine, given that the offsets change when entries are moved around in the jump_entry table. Signed-off-by: Ard Biesheuvel Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra (Intel) Cc: linux-arm-kernel@lists.infradead.org Cc: linux-s390@vger.kernel.org Cc: Arnd Bergmann Cc: Heiko Carstens Cc: Kees Cook Cc: Will Deacon Cc: Catalin Marinas Cc: Steven Rostedt Cc: Martin Schwidefsky Cc: Jessica Yu Link: https://lkml.kernel.org/r/20180919065144.25010-3-ard.biesheuvel@linaro.org --- arch/Kconfig | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/Kconfig') diff --git a/arch/Kconfig b/arch/Kconfig index 6801123932a5..9d329608913e 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -359,6 +359,9 @@ config HAVE_PERF_USER_STACK_DUMP config HAVE_ARCH_JUMP_LABEL bool +config HAVE_ARCH_JUMP_LABEL_RELATIVE + bool + config HAVE_RCU_TABLE_FREE bool -- cgit v1.2.3