* Pawel Moll wrote:
> On Tue, 2014-09-16 at 08:44 +0100, Ingo Molnar wrote:
> > I think adding an ioctl to inject user-provided data into the
> > event stream is sensible, as long as there's a separate 'user
> > generated data' event for it, etc.
> >
> > The main usecase I could see would be
On Tue, 2014-09-16 at 08:44 +0100, Ingo Molnar wrote:
> I think adding an ioctl to inject user-provided data into the
> event stream is sensible, as long as there's a separate 'user
> generated data' event for it, etc.
>
> The main usecase I could see would be to introduce a
> perf_printf()
On Mon, 2014-09-15 at 19:31 +0100, Arnaldo Carvalho de Melo wrote:
> Em Mon, Sep 15, 2014 at 06:27:14PM +0100, Pawel Moll escreveu:
> > On Fri, 2014-09-12 at 17:19 +0100, Arnaldo Carvalho de Melo wrote:
> > > Em Fri, Sep 12, 2014 at 02:58:55PM +0100, Pawel Moll escreveu:
> > > > On Fri, 2014-09-12
* David Ahern wrote:
> On 9/12/14, 2:44 PM, Arnaldo Carvalho de Melo wrote:
> >Em Fri, Sep 12, 2014 at 10:37:39AM -0700, David Ahern escreveu:
> >>On 9/12/14, 4:48 AM, Pawel Moll wrote:
> >>>This patch adds a PERF_COUNT_SW_MARKER event type, which
> >>>can be requested by user and a
* David Ahern dsah...@gmail.com wrote:
On 9/12/14, 2:44 PM, Arnaldo Carvalho de Melo wrote:
Em Fri, Sep 12, 2014 at 10:37:39AM -0700, David Ahern escreveu:
On 9/12/14, 4:48 AM, Pawel Moll wrote:
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a
On Mon, 2014-09-15 at 19:31 +0100, Arnaldo Carvalho de Melo wrote:
Em Mon, Sep 15, 2014 at 06:27:14PM +0100, Pawel Moll escreveu:
On Fri, 2014-09-12 at 17:19 +0100, Arnaldo Carvalho de Melo wrote:
Em Fri, Sep 12, 2014 at 02:58:55PM +0100, Pawel Moll escreveu:
On Fri, 2014-09-12 at 14:49
On Tue, 2014-09-16 at 08:44 +0100, Ingo Molnar wrote:
I think adding an ioctl to inject user-provided data into the
event stream is sensible, as long as there's a separate 'user
generated data' event for it, etc.
The main usecase I could see would be to introduce a
perf_printf() variant,
* Pawel Moll pawel.m...@arm.com wrote:
On Tue, 2014-09-16 at 08:44 +0100, Ingo Molnar wrote:
I think adding an ioctl to inject user-provided data into the
event stream is sensible, as long as there's a separate 'user
generated data' event for it, etc.
The main usecase I could see
Em Mon, Sep 15, 2014 at 06:27:14PM +0100, Pawel Moll escreveu:
> On Fri, 2014-09-12 at 17:19 +0100, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Sep 12, 2014 at 02:58:55PM +0100, Pawel Moll escreveu:
> > > On Fri, 2014-09-12 at 14:49 +0100, Arnaldo Carvalho de Melo wrote:
> > > > Perhaps both? I.e.
On Fri, 2014-09-12 at 17:19 +0100, Arnaldo Carvalho de Melo wrote:
> Em Fri, Sep 12, 2014 at 02:58:55PM +0100, Pawel Moll escreveu:
> > On Fri, 2014-09-12 at 14:49 +0100, Arnaldo Carvalho de Melo wrote:
> > > Perhaps both? I.e. an u64 followed from a string, if the u64 is zero,
> > > then there is
On Sun, 2014-09-14 at 16:43 +0100, David Ahern wrote:
> >> Seems really similar to what I proposed in the past:
Yeah, it wasn't really hard to come with similar conclusions :-)
> >> https://lkml.org/lkml/2011/2/27/159
> >>
> >> Which was rejected.
> >
> > I took a look at that thread, but just
On Sun, 2014-09-14 at 16:43 +0100, David Ahern wrote:
Seems really similar to what I proposed in the past:
Yeah, it wasn't really hard to come with similar conclusions :-)
https://lkml.org/lkml/2011/2/27/159
Which was rejected.
I took a look at that thread, but just barely, emphasis
On Fri, 2014-09-12 at 17:19 +0100, Arnaldo Carvalho de Melo wrote:
Em Fri, Sep 12, 2014 at 02:58:55PM +0100, Pawel Moll escreveu:
On Fri, 2014-09-12 at 14:49 +0100, Arnaldo Carvalho de Melo wrote:
Perhaps both? I.e. an u64 followed from a string, if the u64 is zero,
then there is a string
Em Mon, Sep 15, 2014 at 06:27:14PM +0100, Pawel Moll escreveu:
On Fri, 2014-09-12 at 17:19 +0100, Arnaldo Carvalho de Melo wrote:
Em Fri, Sep 12, 2014 at 02:58:55PM +0100, Pawel Moll escreveu:
On Fri, 2014-09-12 at 14:49 +0100, Arnaldo Carvalho de Melo wrote:
Perhaps both? I.e. an u64
On 9/12/14, 2:44 PM, Arnaldo Carvalho de Melo wrote:
Em Fri, Sep 12, 2014 at 10:37:39AM -0700, David Ahern escreveu:
On 9/12/14, 4:48 AM, Pawel Moll wrote:
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a PERF_EVENT_IOC_MARKER
ioctl command which will
On 9/12/14, 2:44 PM, Arnaldo Carvalho de Melo wrote:
Em Fri, Sep 12, 2014 at 10:37:39AM -0700, David Ahern escreveu:
On 9/12/14, 4:48 AM, Pawel Moll wrote:
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a PERF_EVENT_IOC_MARKER
ioctl command which will
Em Fri, Sep 12, 2014 at 10:37:39AM -0700, David Ahern escreveu:
> On 9/12/14, 4:48 AM, Pawel Moll wrote:
> >This patch adds a PERF_COUNT_SW_MARKER event type, which
> >can be requested by user and a PERF_EVENT_IOC_MARKER
> >ioctl command which will inject an event of said type into
> >the perf
On 9/12/14, 4:48 AM, Pawel Moll wrote:
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a PERF_EVENT_IOC_MARKER
ioctl command which will inject an event of said type into
the perf buffer. The ioctl can take a zero-terminated
string argument, similar to
Em Fri, Sep 12, 2014 at 02:58:55PM +0100, Pawel Moll escreveu:
> On Fri, 2014-09-12 at 14:49 +0100, Arnaldo Carvalho de Melo wrote:
> > Perhaps both? I.e. an u64 followed from a string, if the u64 is zero,
> > then there is a string right after it?
> How would this look like in userspace?
On 09/12/2014 08:57 AM, Pawel Moll wrote:
> On Fri, 2014-09-12 at 13:43 +0100, Christopher Covington wrote:
>> Just to ask the dumb questions in case the answers I've come up with are
>> wrong: What is PAGE_SIZE on an arm64 kernel?
>
> It's either 4 or 64k, depending on CONFIG_ARM64_64K_PAGES.
>
On Fri, 2014-09-12 at 14:49 +0100, Arnaldo Carvalho de Melo wrote:
> Perhaps both? I.e. an u64 followed from a string, if the u64 is zero,
> then there is a string right after it?
How would this look like in userspace? Something like this?
8<
struct perf_event_marker {
uint64_t
Em Fri, Sep 12, 2014 at 01:57:52PM +0100, Pawel Moll escreveu:
> On Fri, 2014-09-12 at 13:43 +0100, Christopher Covington wrote:
> > Just to ask the dumb questions in case the answers I've come up with are
> > wrong: What is PAGE_SIZE on an arm64 kernel?
> It's either 4 or 64k, depending on
On Fri, 2014-09-12 at 13:43 +0100, Christopher Covington wrote:
> Just to ask the dumb questions in case the answers I've come up with are
> wrong: What is PAGE_SIZE on an arm64 kernel?
It's either 4 or 64k, depending on CONFIG_ARM64_64K_PAGES.
> How does userspace know?
>
#include
#include
Hi Pawel,
On 09/12/2014 07:48 AM, Pawel Moll wrote:
> This patch adds a PERF_COUNT_SW_MARKER event type, which
> can be requested by user and a PERF_EVENT_IOC_MARKER
> ioctl command which will inject an event of said type into
> the perf buffer. The ioctl can take a zero-terminated
> string
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a PERF_EVENT_IOC_MARKER
ioctl command which will inject an event of said type into
the perf buffer. The ioctl can take a zero-terminated
string argument, similar to tracing_marker in ftrace,
which will be kept in
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a PERF_EVENT_IOC_MARKER
ioctl command which will inject an event of said type into
the perf buffer. The ioctl can take a zero-terminated
string argument, similar to tracing_marker in ftrace,
which will be kept in
Hi Pawel,
On 09/12/2014 07:48 AM, Pawel Moll wrote:
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a PERF_EVENT_IOC_MARKER
ioctl command which will inject an event of said type into
the perf buffer. The ioctl can take a zero-terminated
string argument,
On Fri, 2014-09-12 at 13:43 +0100, Christopher Covington wrote:
Just to ask the dumb questions in case the answers I've come up with are
wrong: What is PAGE_SIZE on an arm64 kernel?
It's either 4 or 64k, depending on CONFIG_ARM64_64K_PAGES.
How does userspace know?
#include unistd.h
Em Fri, Sep 12, 2014 at 01:57:52PM +0100, Pawel Moll escreveu:
On Fri, 2014-09-12 at 13:43 +0100, Christopher Covington wrote:
Just to ask the dumb questions in case the answers I've come up with are
wrong: What is PAGE_SIZE on an arm64 kernel?
It's either 4 or 64k, depending on
On Fri, 2014-09-12 at 14:49 +0100, Arnaldo Carvalho de Melo wrote:
Perhaps both? I.e. an u64 followed from a string, if the u64 is zero,
then there is a string right after it?
How would this look like in userspace? Something like this?
8
struct perf_event_marker {
uint64_t value;
On 09/12/2014 08:57 AM, Pawel Moll wrote:
On Fri, 2014-09-12 at 13:43 +0100, Christopher Covington wrote:
Just to ask the dumb questions in case the answers I've come up with are
wrong: What is PAGE_SIZE on an arm64 kernel?
It's either 4 or 64k, depending on CONFIG_ARM64_64K_PAGES.
How
Em Fri, Sep 12, 2014 at 02:58:55PM +0100, Pawel Moll escreveu:
On Fri, 2014-09-12 at 14:49 +0100, Arnaldo Carvalho de Melo wrote:
Perhaps both? I.e. an u64 followed from a string, if the u64 is zero,
then there is a string right after it?
How would this look like in userspace? Something
On 9/12/14, 4:48 AM, Pawel Moll wrote:
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a PERF_EVENT_IOC_MARKER
ioctl command which will inject an event of said type into
the perf buffer. The ioctl can take a zero-terminated
string argument, similar to
Em Fri, Sep 12, 2014 at 10:37:39AM -0700, David Ahern escreveu:
On 9/12/14, 4:48 AM, Pawel Moll wrote:
This patch adds a PERF_COUNT_SW_MARKER event type, which
can be requested by user and a PERF_EVENT_IOC_MARKER
ioctl command which will inject an event of said type into
the perf buffer. The
34 matches
Mail list logo
