[v3,2/3] RISC-V: Enable TLBFLUSH counters for debug kernel.

Commit Message

Atish Patra April 29, 2019, 9:27 p.m. UTC

The TLB flush counters under vmstat seems to be very helpful while
debugging TLB flush performance in RISC-V.

Add the Kconfig option only for debug kernels.

Signed-off-by: Atish Patra <[e-mail]>
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index eb56c82d8aa1..c1ee876d1e7f 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -49,6 +49,7 @@  config RISCV
 	select GENERIC_IRQ_MULTI_HANDLER
 	select ARCH_HAS_PTE_SPECIAL
 	select HAVE_EBPF_JIT if 64BIT
+	select HAVE_ARCH_DEBUG_TLBFLUSH if DEBUG_KERNEL
 
 config MMU
 	def_bool y