perf bench, x86: Add alternatives-asm.h wrapper

tip:perf/core tip-bot for Ingo Molnar 1 participant 1 message May 18, 2011 perf events

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2011-05-18 20:45 UTC #0 lore raw

Commit-ID:  b313207286a78abac19f1dd2721292eae598b0f5
Gitweb:     http://git.kernel.org/tip/b313207286a78abac19f1dd2721292eae598b0f5
Author:     Ingo Molnar <[email protected]>
AuthorDate: Wed, 18 May 2011 21:00:44 +0200
Committer:  Ingo Molnar <[email protected]>
CommitDate: Wed, 18 May 2011 21:00:44 +0200

perf bench, x86: Add alternatives-asm.h wrapper

perf bench needs this to build the kernel's memcpy routine:

In file included from bench/mem-memcpy-x86-64-asm.S:2:0:
bench/../../../arch/x86/lib/memcpy_64.S:7:33: fatal error: asm/alternative-asm.h: No such file or directory

Cc Peter Zijlstra <[email protected]>

Cc Arnaldo Carvalho de Melo <[email protected]>

Cc Frederic Weisbecker <[email protected]>

Cc Mike Galbraith <[email protected]>

Cc Steven Rostedt <[email protected]>

Link http://lkml.kernel.org/n/[email protected] open here

Signed-off-by Ingo Molnar <[email protected]>

---
 tools/perf/util/include/asm/alternative-asm.h |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

tools/perf/util/include/asm/alternative-asm.h new file +8 -0

new file mode 100644
index 0000000..6789d78
@@ -0,0 +1,8 @@
+#ifndef _PERF_ASM_ALTERNATIVE_ASM_H
+#define _PERF_ASM_ALTERNATIVE_ASM_H
+
+/* Just disable it so we can build arch/x86/lib/memcpy_64.S for perf bench: */
+
+#define altinstruction_entry #
+
+#endif