perf_counter: include missing header
Impact: build fix
In order to compile a kernel with performance counter patches,
<asm/irq_regs.h> has to be included to provide the declaration of
struct pt_regs *get_irq_regs(void);
[ This bug was masked by unrelated x86 header file changes in the
x86 tree, but occurs in the tip:perfcounters/core standalone
tree. ]
Signed-off-by: Tim Blechmann <tim@klingt.org>
Orig-LKML-Reference: <20090314142925.49c29c17@thinkpad>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index d6cc222..0018c5e 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -24,6 +24,8 @@
#include <linux/vmstat.h>
#include <linux/rculist.h>
+#include <asm/irq_regs.h>
+
/*
* Each CPU has a list of per CPU counters:
*/