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-rw-r--r--arch/alpha/Kconfig1
-rw-r--r--arch/alpha/include/asm/perf_event.h9
-rw-r--r--arch/alpha/include/asm/unistd.h3
-rw-r--r--arch/alpha/kernel/systbls.S1
4 files changed, 13 insertions, 1 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 443448154f3..bd7261ea8f9 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -9,6 +9,7 @@ config ALPHA
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_SYSCALL_WRAPPERS
+ select HAVE_PERF_EVENTS
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/alpha/include/asm/perf_event.h b/arch/alpha/include/asm/perf_event.h
new file mode 100644
index 00000000000..3bef8522017
--- /dev/null
+++ b/arch/alpha/include/asm/perf_event.h
@@ -0,0 +1,9 @@
+#ifndef __ASM_ALPHA_PERF_EVENT_H
+#define __ASM_ALPHA_PERF_EVENT_H
+
+/* Alpha only supports software events through this interface. */
+static inline void set_perf_event_pending(void) { }
+
+#define PERF_EVENT_INDEX_OFFSET 0
+
+#endif /* __ASM_ALPHA_PERF_EVENT_H */
diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
index 62e823e68f6..804e5311c84 100644
--- a/arch/alpha/include/asm/unistd.h
+++ b/arch/alpha/include/asm/unistd.h
@@ -448,10 +448,11 @@
#define __NR_preadv 490
#define __NR_pwritev 491
#define __NR_rt_tgsigqueueinfo 492
+#define __NR_perf_event_open 493
#ifdef __KERNEL__
-#define NR_SYSCALLS 493
+#define NR_SYSCALLS 494
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index d0bc3c8c3ed..09acb786e72 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -511,6 +511,7 @@ sys_call_table:
.quad sys_preadv /* 490 */
.quad sys_pwritev
.quad sys_rt_tgsigqueueinfo
+ .quad sys_perf_event_open
.size sys_call_table, . - sys_call_table
.type sys_call_table, @object