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Date: Sat, 4 Jan 2014 18:19:48 +0100 From: Jan Kiszka <jan.kiszka@....de> To: Steven Rostedt <rostedt@...dmis.org> Cc: linux-trace-users@...r.kernel.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, kvm <kvm@...r.kernel.org> Subject: [PATCH 1/3] trace-cmd: Report unknown VMX exit reasons with code From: Jan Kiszka <jan.kiszka@...mens.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@...mens.com> --- plugin_kvm.c | 12 ++++++++---- 1 file 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); -- 1.8.1.1.298.ge7eed54 -- 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/
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