[PATCH 4/4] perf, x86: Remove old MSR perf tracing code

From: Andi Kleen
Date: Tue Dec 01 2015 - 20:01:53 EST


From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

Now that we have generic MSR trace points we can remove the old
hackish perf MSR read tracing code.

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/perf_event.h | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h
index 499f533..5300247 100644
--- a/arch/x86/kernel/cpu/perf_event.h
+++ b/arch/x86/kernel/cpu/perf_event.h
@@ -14,17 +14,7 @@

#include <linux/perf_event.h>

-#if 0
-#undef wrmsrl
-#define wrmsrl(msr, val) \
-do { \
- unsigned int _msr = (msr); \
- u64 _val = (val); \
- trace_printk("wrmsrl(%x, %Lx)\n", (unsigned int)(_msr), \
- (unsigned long long)(_val)); \
- native_write_msr((_msr), (u32)(_val), (u32)(_val >> 32)); \
-} while (0)
-#endif
+/* To enable MSR tracing please use the generic trace points. */

/*
* | NHM/WSM | SNB |
--
2.4.3

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