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s390x/kvm: add tracepoint to ioeventfd interface 

Trace when assigning/unassigning.

Message-Id: <20190212153025.25425-1-cohuck@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Cornelia Huck 2019-02-12 15:50:00 +01:00
parent f2a7d15771
commit 747c432f1e
2 changed files with 3 additions and 0 deletions
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2
target/s390x/kvm.c
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@ -1886,6 +1886,8 @@ int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
.addr = sch,
.len = 8,
};
trace_kvm_assign_subch_ioeventfd(kick.fd, kick.addr, assign,
kick.datamatch);
if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
return -ENOSYS;
}

1
target/s390x/trace-events
View File

@ -14,6 +14,7 @@ ioinst_chsc_cmd(uint16_t cmd, uint16_t len) "IOINST: chsc command 0x%04x, len 0x
kvm_enable_cmma(int rc) "CMMA: enabling with result code %d"
kvm_clear_cmma(int rc) "CMMA: clearing with result code %d"
kvm_failed_cpu_state_set(int cpu_index, uint8_t state, const char *msg) "Warning: Unable to set cpu %d state %" PRIu8 " to KVM: %s"
kvm_assign_subch_ioeventfd(int fd, uint32_t addr, bool assign, int datamatch) "fd: %d sch: @0x%x assign: %d vq: %d"
# target/s390x/cpu.c
cpu_set_state(int cpu_index, uint8_t state) "setting cpu %d state to %" PRIu8