sh: Generic HAVE_PERF_COUNTER support.

This enables support for the generic software-based perf counters.

Hardware counter support could be added in the future, but the lack
of a performance counter IRQ makes this rather dubious.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2 files changed, 8 insertions, 0 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index a6f9eaa6e0bb..e487e6d5a4d0 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -15,6 +15,7 @@ config SUPERH
         select HAVE_IOREMAP_PROT if MMU
         select HAVE_ARCH_TRACEHOOK
         select HAVE_DMA_API_DEBUG
+        select HAVE_PERF_COUNTER
         select RTC_LIB
         select GENERIC_ATOMIC64
         help
diff --git a/arch/sh/include/asm/perf_counter.h b/arch/sh/include/asm/perf_counter.h
new file mode 100644
index 000000000000..a8153c2aa6fa
--- /dev/null
+++ b/arch/sh/include/asm/perf_counter.h
@@ -0,0 +1,7 @@
+#ifndef __ASM_SH_PERF_COUNTER_H
+#define __ASM_SH_PERF_COUNTER_H
+
+/* SH only supports software counters through this interface. */
+#define set_perf_counter_pending()      do { } while (0)
+
+#endif /* __ASM_SH_PERF_COUNTER_H */