linux-kernel - [PATCH 3/3] perf, tools: Add support for guest/host-only profiling

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: <1305038132-5080-4-git-send-email-joerg.roedel@amd.com>
Date:	Tue, 10 May 2011 16:35:32 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
CC:	<linux-kernel@...r.kernel.org>, <kvm@...r.kernel.org>,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 3/3] perf, tools: Add support for guest/host-only profiling

To restrict a counter to either host or guest mode this
patch introduces two new event modifiers: G and H.
With G the counter is configured in guest-only mode and with
H in host-only mode.

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 tools/perf/util/parse-events.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 952b4ae..21039d2 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -723,7 +723,7 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr)
 {
 	const char *str = *strp;
 	int exclude = 0;
-	int eu = 0, ek = 0, eh = 0, precise = 0;
+	int eu = 0, ek = 0, eh = 0, eg = 0, ehst = 0, precise = 0;
 
 	if (*str++ != ':')
 		return 0;
@@ -740,6 +740,12 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr)
 			if (!exclude)
 				exclude = eu = ek = eh = 1;
 			eh = 0;
+		} else if (*str == 'G') {
+			eg   = 0;
+			ehst = 1;
+		} else if (*str == 'H') {
+			eg   = 1;
+			ehst = 0;
 		} else if (*str == 'p') {
 			precise++;
 		} else
@@ -753,6 +759,8 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr)
 		attr->exclude_kernel = ek;
 		attr->exclude_hv     = eh;
 		attr->precise_ip     = precise;
+		attr->exclude_host   = ehst;
+		attr->exclude_guest  = eg;
 		return 1;
 	}
 	return 0;
-- 
1.7.4.1


--
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/