[PATCH] riscv: enable kcov

[Tobias Klauser]

Add ARCH_HAS_KCOV and HAVE_GCC_PLUGINS to the riscv Kconfig.
Also disable instrumentation of vdso.

Cc: Björn Töpel <bjorn.topel at gmail.com>
Cc: Dmitry Vyukov <dvyukov at google.com>
Signed-off-by: Tobias Klauser <tklauser at distanz.ch>
---
 arch/riscv/Kconfig              | 2 ++
 arch/riscv/kernel/vdso/Makefile | 1 +
 2 files changed, 3 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 089293e4ad46..a7d7f8184f15 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -19,6 +19,7 @@ config RISCV
 	select ARCH_HAS_DEBUG_WX
 	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_HAS_GIGANTIC_PAGE
+	select ARCH_HAS_KCOV
 	select ARCH_HAS_MMIOWB
 	select ARCH_HAS_PTE_SPECIAL
 	select ARCH_HAS_SET_DIRECT_MAP
@@ -57,6 +58,7 @@ config RISCV
 	select HAVE_DMA_CONTIGUOUS if MMU
 	select HAVE_EBPF_JIT if MMU
 	select HAVE_FUTEX_CMPXCHG if FUTEX
+	select HAVE_GCC_PLUGINS
 	select HAVE_GENERIC_VDSO if MMU && 64BIT
 	select HAVE_PCI
 	select HAVE_PERF_EVENTS
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index 38ba55b0eb9d..9debbaab393d 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -29,6 +29,7 @@ CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
 
 # Disable gcov profiling for VDSO code
 GCOV_PROFILE := n
+KCOV_INSTRUMENT := n
 
 # Force dependency
 $(obj)/vdso.o: $(obj)/vdso.so
-- 
2.27.0