ge is filled with 0s.
A new function perf_output_begin_forward_in_page() is to be used to
commence output that cannot cross page boundaries.
Signed-off-by: Kris Van Hees
Reviewed-by: Nick Alcock
---
include/linux/perf_event.h | 3 ++
kernel/events/ring_b
. This way, whenever a new helper is added that may change
the content of the context, there is no need to update a hardcoded list of
functions.
Signed-off-by: Kris Van Hees
Reviewed-by: Nick Alcock
---
include/linux/bpf.h| 1 +
include/linux/filter.h | 1 -
kernel/bpf/core.c | 5
On Wed, Mar 13, 2019 at 09:30:02AM -0700, Brendan Gregg wrote:
> On Tue, Mar 12, 2019 at 9:54 AM Kris Van Hees
> wrote:
> >
> > On Mon, Mar 11, 2019 at 11:03:10PM -0700, Brendan Gregg wrote:
> > > On Mon, Mar 11, 2019 at 8:24 PM Kris Van Hees
> > > wrote:
On Mon, Mar 11, 2019 at 11:03:10PM -0700, Brendan Gregg wrote:
> On Mon, Mar 11, 2019 at 8:24 PM Kris Van Hees
> wrote:
> >
> > On Mon, Mar 11, 2019 at 06:29:55PM -0700, Brendan Gregg wrote:
> > > On Mon, Mar 11, 2019 at 7:21 AM Kris Van Hees
> > > wrote:
On Mon, Mar 11, 2019 at 06:29:55PM -0700, Brendan Gregg wrote:
> On Mon, Mar 11, 2019 at 7:21 AM Kris Van Hees
> wrote:
> >
> > On Thu, Mar 07, 2019 at 01:30:37PM -0800, Alexei Starovoitov wrote:
> > > On Tue, Mar 05, 2019 at 09:03:57PM -0500, Kris Van Hees wrote:
>
On Thu, Mar 07, 2019 at 01:30:37PM -0800, Alexei Starovoitov wrote:
> On Tue, Mar 05, 2019 at 09:03:57PM -0500, Kris Van Hees wrote:
> >
> > So in summary, I am trying to solve two (related) problems:
> >
> > - Ensure that unprivileged tracing can obtain informati
On Tue, Mar 05, 2019 at 10:59:52AM -0800, Alexei Starovoitov wrote:
> On Tue, Feb 26, 2019 at 01:46:01AM -0500, Kris Van Hees wrote:
> > On Mon, Feb 25, 2019 at 10:18:25PM -0800, Alexei Starovoitov wrote:
> > > On Mon, Feb 25, 2019 at 07:54:13AM -0800, Kris Van Hees wrote:
&g
On Mon, Feb 25, 2019 at 10:18:25PM -0800, Alexei Starovoitov wrote:
> On Mon, Feb 25, 2019 at 07:54:13AM -0800, Kris Van Hees wrote:
> >
> > The goal is to further extend the BPF_PROG_TYPE_GTRACE implementation to
> > support what tracers commonly need, and I am also looki
e
the context is only initialised when the program is called through a
tail-call from a different (supported) program type.
Signed-off-by: Kris Van Hees
Reviewed-by: Nick Alcock
---
include/linux/bpf_gtrace.h | 27 +
include/linux/bpf_types.h | 3 +
include/uapi/linux/bpf.h
do not implement
this new feature.
A JIT implementation is not available yet in this first iteration.
Signed-off-by: Kris Van Hees
Reviewed-by: Nick Alcock
---
include/linux/bpf.h | 4
kernel/bpf/core.c | 27 ++-
kernel/bpf/syscall.c | 2 +-
kernel/bpf
The patches in this set are part of an effort to provide support for
tracing tools beyond attaching programs to probes and events and working
with the context data they provide. It is also aimed at avoiding adding
new helpers for every piece of task information that tracers may want to
include in
On Fri, Jan 11, 2019 at 09:12:57AM +0100, Daniel Borkmann wrote:
> Hi Kris,
>
> On 01/11/2019 06:08 AM, Kris Van Hees wrote:
> > Maybe I am missing something trivial here, but it looks to me that there is
> > a leak of htab elements in htab_map_update_elem when you are upd
Maybe I am missing something trivial here, but it looks to me that there is
a leak of htab elements in htab_map_update_elem when you are updating an
existing element. After the new element is linked into the bucket list, the
following code snippet is found:
if (l_old) {
hl
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