Re: [PATCH] tracing, perf: add more power related events
[Posted October 5, 2010 by corbet]
| From: |
| "Frank Ch. Eigler" <fche-AT-redhat.com> |
| To: |
| Peter Zijlstra <peterz-AT-infradead.org> |
| Subject: |
| Re: [PATCH] tracing, perf: add more power related events |
| Date: |
| Wed, 22 Sep 2010 15:14:40 -0400 |
| Message-ID: |
| <20100922191440.GE2727@redhat.com> |
| Cc: |
| Steven Rostedt <rostedt-AT-goodmis.org>,
Arjan van de Ven <arjan-AT-linux.intel.com>,
Jean Pihet <jean.pihet-AT-newoldbits.com>,
Thomas Renninger <trenn-AT-suse.de>, Ingo Molnar <mingo-AT-elte.hu>,
Len Brown <len.brown-AT-intel.com>, arjan-AT-infradead.org,
Kevin Hilman <khilman-AT-deeprootsystems.com>,
linux-kernel-AT-vger.kernel.org, linux-pm-AT-lists.linux-foundation.org,
linux-omap-AT-vger.kernel.org, linux-perf-users-AT-vger.kernel.org,
linux-trace-users-AT-vger.kernel.org |
| Archive‑link: | |
Article |
Hi -
On Wed, Sep 22, 2010 at 08:26:40PM +0200, Peter Zijlstra wrote:
> [...]
> > Not sure what you mean by "double tracepoints"
> Two different tracepoints in the same location.
Another possibility may be to provide a backward-compatibility module
that maps new tracepoints to old ones. On demand, it could attach to
the new tracepoints, and export those callbacks as clones of the old
pseudo-ABI: same old names & parameters. If the new ones supply a
superset of events & data, this is technically possible.
- FChE
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