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Articles by Ingo Molnar
Re: 100,000 threads? [was: [ANNOUNCE] Nat
From: Ingo Molnar (mingo@elte.hu) Date: Fri Sep 20 2002 - 02:52:39 EST Next message: Miles Lane: "Re: Dont understand hdc=ide-scsi behaviour." Previous message: Vojtech Pavlik: "Re: compile error in pre7-ac2: usb & input" In reply to: Rik van Riel: "Re: [ANNOUNCE] Native POSIX Thread Library 0.1" Next in thread: Bill Davidsen: "Re: 100,000 threads? [was: [ANNOUNCE] Native POSIX Thread Library 0.1]" Reply: Bill Davidsen: "Re: 100,000 threads?
Schedulers: the plot thickens
The RSDL scheduler (since renamed the staircase deadline scheduler) by Con Kolivas was, for a period of time, assumed to be positioned for merging into the mainline, perhaps as soon as 2.6.22. Difficulties with certain workloads made the future of this scheduler a little less certain. Now Con would appear to have rediscovered one of the most reliable ways of getting a new idea into the kernel: post some code then wait for Ingo Molnar to rework the whole thing in a two-day hacking binge.
Re: [PATCH v3 1/1] x86,sched: On AMD EPYC set freq_max = max_boost in schedutil invariant formula
LKML Archive on lore.kernel.org help / color / Atom feed From: "Rafael J. Wysocki" <rjw@rjwysocki.net> To: Giovanni Gherdovich <ggherdovich@suse.cz> Cc: "Rafael J.
Re: [PATCH v3 1/1] x86,sched: On AMD EPYC set freq_max = max_boost in schedutil invariant formula
LKML Archive on lore.kernel.org help / color / Atom feed From: Michael Larabel <Michael@phoronix.com> To: "Rafael J. Wysocki" <rjw@rjwysocki.net>, Giovanni Gherdovich <ggherdovich@suse.cz> Cc: "Rafael J.
fix schedutil perf regression (freq-invariance)
LKML Archive on lore.kernel.org help / color / Atom feed [PATCH v2 0/1] AMD EPYC: fix schedutil perf regression (freq-invariance) @ 2021-01-22 20:40 Giovanni Gherdovich 2021-01-22 20:40 ` Giovanni Gherdovich 2021-01-24 22:30 ` Michael Larabel From: Giovanni Gherdovich @ 2021-01-22 20:40 UTC (permalink / raw) To: Borislav Petkov, Ingo Molnar, Peter Zijlstra, Rafael J .
fix schedutil perf regression (freq-invariance)
LKML Archive on lore.kernel.org help / color / Atom feed [PATCH v2 0/1] AMD EPYC: fix schedutil perf regression (freq-invariance) @ 2021-01-22 20:40 Giovanni Gherdovich 2021-01-22 20:40 ` Giovanni Gherdovich 2021-01-24 22:30 ` Michael Larabel From: Giovanni Gherdovich @ 2021-01-22 20:40 UTC (permalink / raw) To: Borislav Petkov, Ingo Molnar, Peter Zijlstra, Rafael J .
Re: [PATCH 1/4] drivers core: Introduce CPU type sysfs interface
LKML Archive on lore.kernel.org help / color / Atom feed From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: Brice Goglin <brice.goglin@gmail.com> Cc: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>, x86@kernel.org, Borislav Petkov <bp@suse.de>, Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>, Tony Luck <tony.luck@intel.com>, Len Brown <len.brown@intel.com>, "Ravi V.
Create macros to restrict/unrestrict Indirect Branch Speculation
* David Woodhouse <dwmw2@infradead.org> wrote: > But wait, why did I say "mostly"? Well, not everyone has a retpoline > compiler yet... but OK, screw them; they need to update. > > Then there's Skylake, and that generation of CPU cores. For complicated > reasons they actually end up being vulnerable not just on indirect > branches, but also on a 'ret' in some circumstances (such as 16+ CALLs > in a deep chain). > > The IBRS solution, ugly though it is, did address that. Retpoline > doesn't.
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