lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 10 Nov 2009 06:13:21 +0100
From:	Ingo Molnar <>
To:	Frederic Weisbecker <>
Cc:	LKML <>,
	Peter Zijlstra <>,
	Arnaldo Carvalho de Melo <>,
	Mike Galbraith <>,
	Paul Mackerras <>,
	Thomas Gleixner <>
Subject: Re: [RFC PATCH 0/4] perf/core: Small event scheduling changes

* Frederic Weisbecker <> wrote:

> Hi,
> This is an rfc patchset, only compile tested just to ensure I'm taking 
> a good direction before going ahead.
> This is intended to rework a bit the perf event scheduling to 
> guarantee a real priority of the pinned events over the volatile ones. 
> This patchset handles such priority on task tick time only. But if the 
> idea is agreed, I could expand that to every task event sched-in calls 
> to guarantee the priority in every event rescheduling time.
> Thanks.
> Frederic Weisbecker (4):
>   perf/core: split context's event group list into pinned and
>     non-pinned lists
>   perf/core: Optimize a bit rotate_ctx()
>   perf/core: Split up pinned and non pinned processing
>   perf/core: Schedule every pinned events before the the non-pinned
>  include/linux/perf_event.h |    3 +-
>  kernel/perf_event.c        |  283 ++++++++++++++++++++++++++++++++-----------
>  2 files changed, 212 insertions(+), 74 deletions(-)

Sans the small naming suggestions i had, the general principle looks 
good to me - it's a nice restructuring of the various scheduling rules 
we have for events.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists