On Mon, Jul 08, 2019 at 02:15:37PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Wed, Jul 03, 2019 at 08:14:30PM -0700, Kris Van Hees escreveu:
> > This initial implementation of a tiny subset of DTrace functionality
> > provides the following options:
> >
> > dtrace [-lvV] [-b bufsz] -s script
Em Wed, Jul 03, 2019 at 08:14:30PM -0700, Kris Van Hees escreveu:
> This initial implementation of a tiny subset of DTrace functionality
> provides the following options:
>
> dtrace [-lvV] [-b bufsz] -s script
> -b set trace buffer size
> -l list probes (only works with
On Thu, Jul 04, 2019 at 03:03:36PM +0200, Peter Zijlstra wrote:
> On Wed, Jul 03, 2019 at 08:14:30PM -0700, Kris Van Hees wrote:
> > +/*
> > + * Read the data_head offset from the header page of the ring buffer. The
> > + * argument is declared 'volatile' because it references a memory mapped
> >
On Thu, Jul 04, 2019 at 03:05:09PM +0200, Peter Zijlstra wrote:
> On Wed, Jul 03, 2019 at 08:14:30PM -0700, Kris Van Hees wrote:
> > +int dt_bpf_attach(int event_id, int bpf_fd)
> > +{
> > + int event_fd;
> > + int rc;
> > + struct perf_event_attr attr
On Wed, Jul 3, 2019 at 8:17 PM Kris Van Hees wrote:
>
> This initial implementation of a tiny subset of DTrace functionality
> provides the following options:
>
> dtrace [-lvV] [-b bufsz] -s script
> -b set trace buffer size
> -l list probes (only works with '-s s
On Wed, Jul 03, 2019 at 08:14:30PM -0700, Kris Van Hees wrote:
> +int dt_bpf_attach(int event_id, int bpf_fd)
> +{
> + int event_fd;
> + int rc;
> + struct perf_event_attr attr = {};
> +
> + attr.type = PERF_TYPE_TRACEPOINT;
> + attr.samp
On Wed, Jul 03, 2019 at 08:14:30PM -0700, Kris Van Hees wrote:
> +/*
> + * Read the data_head offset from the header page of the ring buffer. The
> + * argument is declared 'volatile' because it references a memory mapped page
> + * that the kernel may be writing to while we access it here.
> + */
This initial implementation of a tiny subset of DTrace functionality
provides the following options:
dtrace [-lvV] [-b bufsz] -s script
-b set trace buffer size
-l list probes (only works with '-s script' for now)
-s enable or list probes for the spec
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