On 06/17, zhangwei(Jovi) wrote:
>
> On 2013/6/17 1:21, Oleg Nesterov wrote:
> > perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense
> > if this task/CPU has no active counters. Change kprobe_perf_func()
> > and kretprobe_perf_func() to check call->perf_events beforehand
> > and return
On 06/17, zhangwei(Jovi) wrote:
On 2013/6/17 1:21, Oleg Nesterov wrote:
perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense
if this task/CPU has no active counters. Change kprobe_perf_func()
and kretprobe_perf_func() to check call-perf_events beforehand
and return if this
(2013/06/17 2:21), Oleg Nesterov wrote:
> perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense
> if this task/CPU has no active counters. Change kprobe_perf_func()
> and kretprobe_perf_func() to check call->perf_events beforehand
> and return if this list is empty.
>
> For example,
On 2013/6/17 1:21, Oleg Nesterov wrote:
> perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense
> if this task/CPU has no active counters. Change kprobe_perf_func()
> and kretprobe_perf_func() to check call->perf_events beforehand
> and return if this list is empty.
>
> For example,
perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense
if this task/CPU has no active counters. Change kprobe_perf_func()
and kretprobe_perf_func() to check call->perf_events beforehand
and return if this list is empty.
For example, "perf record -e some_probe -p1". Only /sbin/init will
perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense
if this task/CPU has no active counters. Change kprobe_perf_func()
and kretprobe_perf_func() to check call-perf_events beforehand
and return if this list is empty.
For example, perf record -e some_probe -p1. Only /sbin/init will
On 2013/6/17 1:21, Oleg Nesterov wrote:
perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense
if this task/CPU has no active counters. Change kprobe_perf_func()
and kretprobe_perf_func() to check call-perf_events beforehand
and return if this list is empty.
For example, perf
(2013/06/17 2:21), Oleg Nesterov wrote:
perf_trace_buf_prepare() + perf_trace_buf_submit() make no sense
if this task/CPU has no active counters. Change kprobe_perf_func()
and kretprobe_perf_func() to check call-perf_events beforehand
and return if this list is empty.
For example, perf
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