[PATCH] riscv: export flush_icache_all to modules

[Olof Johansson]

This is needed by LKDTM (crash dump test module), it calls
flush_icache_range(), which on RISC-V turns into flush_icache_all(). On
other architectures, the actual implementation is exported, so follow
that precedence and export it here too.

Fixes build of CONFIG_LKDTM that fails with:
ERROR: "flush_icache_all" [drivers/misc/lkdtm/lkdtm.ko] undefined!

Signed-off-by: Olof Johansson <olof@xxxxxxxxx>
---
 arch/riscv/mm/cacheflush.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c
index 8f19006866405..8930ab7278e6d 100644
--- a/arch/riscv/mm/cacheflush.c
+++ b/arch/riscv/mm/cacheflush.c
@@ -22,6 +22,7 @@ void flush_icache_all(void)
 	else
 		on_each_cpu(ipi_remote_fence_i, NULL, 1);
 }
+EXPORT_SYMBOL(flush_icache_all);
 
 /*
  * Performs an icache flush for the given MM context.  RISC-V has no direct
-- 
2.11.0