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powerpc/perf: Export PERF_EVENT_CONFIG_EBB_SHIFT to userspace

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We use bit 63 of the event code for userspace to request that the event
be counted using EBB (Event Based Branches). Export this value, making
it part of the API - though only on processors that support EBB.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman
2013-07-23 18:07:45 +10:00
committed by Benjamin Herrenschmidt
parent e8e813ed26
commit 8d7c55d01e
5 changed files with 24 additions and 9 deletions
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18
arch/powerpc/include/uapi/asm/perf_event.h Normal file
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/*
* Copyright 2013 Michael Ellerman, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; version 2 of the
* License.
*/
#ifndef _UAPI_ASM_POWERPC_PERF_EVENT_H
#define _UAPI_ASM_POWERPC_PERF_EVENT_H
/*
* We use bit 63 of perf_event_attr.config as a flag to request EBB.
*/
#define PERF_EVENT_CONFIG_EBB_SHIFT 63
#endif /* _UAPI_ASM_POWERPC_PERF_EVENT_H */