Re: [Qemu-devel] [PATCH v2 2/2] trace: add trace_event_get_state_backends()

2017-08-01 Thread Daniel P. Berrange
On Mon, Jul 31, 2017 at 03:07:18PM +0100, Stefan Hajnoczi wrote: > Code that checks dstate is unaware of SystemTap and LTTng UST dstate, so > the following trace event will not fire when solely enabled by SystemTap > or LTTng UST: > > if (trace_event_get_state(TRACE_MY_EVENT)) { > str = g_

Re: [Qemu-devel] [PATCH v2 2/2] trace: add trace_event_get_state_backends()

2017-07-31 Thread Lluís Vilanova
Stefan Hajnoczi writes: > On Mon, Jul 31, 2017 at 06:09:56PM +0300, Lluís Vilanova wrote: >> Stefan Hajnoczi writes: >> >> > Code that checks dstate is unaware of SystemTap and LTTng UST dstate, so >> > the following trace event will not fire when solely enabled by SystemTap >> > or LTTng UST: >>

Re: [Qemu-devel] [PATCH v2 2/2] trace: add trace_event_get_state_backends()

2017-07-31 Thread Stefan Hajnoczi
On Mon, Jul 31, 2017 at 06:09:56PM +0300, Lluís Vilanova wrote: > Stefan Hajnoczi writes: > > > Code that checks dstate is unaware of SystemTap and LTTng UST dstate, so > > the following trace event will not fire when solely enabled by SystemTap > > or LTTng UST: > > > if (trace_event_get_state

Re: [Qemu-devel] [PATCH v2 2/2] trace: add trace_event_get_state_backends()

2017-07-31 Thread Lluís Vilanova
Stefan Hajnoczi writes: > Code that checks dstate is unaware of SystemTap and LTTng UST dstate, so > the following trace event will not fire when solely enabled by SystemTap > or LTTng UST: > if (trace_event_get_state(TRACE_MY_EVENT)) { > str = g_strdup_printf("Expensive string to generat

[Qemu-devel] [PATCH v2 2/2] trace: add trace_event_get_state_backends()

2017-07-31 Thread Stefan Hajnoczi
Code that checks dstate is unaware of SystemTap and LTTng UST dstate, so the following trace event will not fire when solely enabled by SystemTap or LTTng UST: if (trace_event_get_state(TRACE_MY_EVENT)) { str = g_strdup_printf("Expensive string to generate ...",