linux-kernel - [PATCH 11/15] perf, x86: Add Haswell specific transaction flag reporting

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1366485563-16209-12-git-send-email-andi@firstfloor.org>
Date:	Sat, 20 Apr 2013 12:19:19 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	mingo@...e.hu
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 11/15] perf, x86: Add Haswell specific transaction flag reporting

From: Andi Kleen <ak@...ux.intel.com>

In the PEBS handler report the transaction flags using the new
generic transaction flags facility. Most of them come from
the "tsx_tuning" field in PEBSv2, but the abort code is derived
from the RAX register reported in the PEBS record.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 arch/x86/kernel/cpu/perf_event_intel_ds.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_intel_ds.c b/arch/x86/kernel/cpu/perf_event_intel_ds.c
index 60683c4..f9bb903 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_ds.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c
@@ -812,6 +812,19 @@ static void __intel_pmu_pebs_event(struct perf_event *event,
 		x86_pmu.intel_cap.pebs_format >= 1)
 		data.addr = pebs->dla;
 
+	if ((event->attr.sample_type & PERF_SAMPLE_WEIGHT) &&
+	    (x86_pmu.intel_cap.pebs_format >= 2) &&
+	    pebs_hsw->tsx_tuning)
+		data.weight = pebs_hsw->tsx_tuning & 0xffffffff;
+
+	if ((event->attr.sample_type & PERF_SAMPLE_TRANSACTION) &&
+	    x86_pmu.intel_cap.pebs_format >= 2) {
+		data.transaction = pebs_hsw->tsx_tuning >> 32;
+		if ((data.transaction & PERF_SAMPLE_TXN_TRANSACTION) &&
+		    (pebs->ax & 1))
+			data.transaction |= pebs->ax & 0xff000000;
+	}
+
 	if (has_branch_stack(event))
 		data.br_stack = &cpuc->lbr_stack;
 
-- 
1.7.7.6

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/