From: Jan Kiszka <jan.kiszka@web.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
kvm <kvm@vger.kernel.org>
Subject: [PATCH] trace-cmd: Report unknown VMX exit reasons with code
Date: Sun, 11 Aug 2013 09:59:43 +0200 [thread overview]
Message-ID: <5207446F.1090703@web.de> (raw)
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From: Jan Kiszka <jan.kiszka@siemens.com>
Allows to parse the result even if the KVM plugin does not yet
understand a specific exit code.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
plugin_kvm.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/plugin_kvm.c b/plugin_kvm.c
index 8a25cf1..59443e5 100644
--- a/plugin_kvm.c
+++ b/plugin_kvm.c
@@ -240,9 +240,8 @@ static const char *find_exit_reason(unsigned isa, int val)
for (i = 0; strings[i].val >= 0; i++)
if (strings[i].val == val)
break;
- if (strings[i].str)
- return strings[i].str;
- return "UNKNOWN";
+
+ return strings[i].str;
}
static int kvm_exit_handler(struct trace_seq *s, struct pevent_record *record,
@@ -251,6 +250,7 @@ static int kvm_exit_handler(struct trace_seq *s, struct pevent_record *record,
unsigned long long isa;
unsigned long long val;
unsigned long long info1 = 0, info2 = 0;
+ const char *reason;
if (pevent_get_field_val(s, event, "exit_reason", record, &val, 1) < 0)
return -1;
@@ -258,7 +258,11 @@ static int kvm_exit_handler(struct trace_seq *s, struct pevent_record *record,
if (pevent_get_field_val(s, event, "isa", record, &isa, 0) < 0)
isa = 1;
- trace_seq_printf(s, "reason %s", find_exit_reason(isa, val));
+ reason = find_exit_reason(isa, val);
+ if (reason)
+ trace_seq_printf(s, "reason %s", reason);
+ else
+ trace_seq_printf(s, "reason UNKNOWN (%llu)", val);
pevent_print_num_field(s, " rip 0x%lx", event, "guest_rip", record, 1);
--
1.7.3.4
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next reply other threads:[~2013-08-11 7:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-11 7:59 Jan Kiszka [this message]
2013-10-04 13:40 ` [PATCH] trace-cmd: Report unknown VMX exit reasons with code Jan Kiszka
2013-10-04 14:50 ` Steven Rostedt
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