linux-kernel - [PATCH V6 1/4] perf: Add new conditional branch filter PERF_SAMPLE_BRANCH

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Message-Id: <1400743210-32289-1-git-send-email-khandual@linux.vnet.ibm.com>
Date:	Thu, 22 May 2014 12:50:07 +0530
From:	Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:	peterz@...radead.org
Cc:	linux-kernel@...r.kernel.org, mpe@...erman.id.au,
	benh@...nel.crashing.org,
	Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Subject: [PATCH V6 1/4] perf: Add new conditional branch filter PERF_SAMPLE_BRANCH_COND

This patch introduces new branch filter PERF_SAMPLE_BRANCH_COND which
will extend the existing perf ABI. This will filter branches which are
conditional. Various architectures can provide this functionality either
with HW filtering support (if present) or with SW filtering of captured
branch instructions.

Signed-off-by: Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Reviewed-by: Stephane Eranian <eranian@...gle.com>
Reviewed-by: Andi Kleen <ak@...ux.intel.com>
---
 include/uapi/linux/perf_event.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 853bc1c..696f69b4 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -163,8 +163,9 @@ enum perf_branch_sample_type {
 	PERF_SAMPLE_BRANCH_ABORT_TX	= 1U << 7, /* transaction aborts */
 	PERF_SAMPLE_BRANCH_IN_TX	= 1U << 8, /* in transaction */
 	PERF_SAMPLE_BRANCH_NO_TX	= 1U << 9, /* not in transaction */
+	PERF_SAMPLE_BRANCH_COND		= 1U << 10, /* conditional branches */
 
-	PERF_SAMPLE_BRANCH_MAX		= 1U << 10, /* non-ABI */
+	PERF_SAMPLE_BRANCH_MAX		= 1U << 11, /* non-ABI */
 };
 
 #define PERF_SAMPLE_BRANCH_PLM_ALL \
-- 
1.7.11.7

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