From: Frederic Weisbecker <frederic@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "Valentin Schneider" <vschneid@redhat.com>,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
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"Nicolas Saenz Julienne" <nsaenzju@redhat.com>,
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"H. Peter Anvin" <hpa@zytor.com>,
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"Petr Mladek" <pmladek@suse.com>,
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"Yair Podemsky" <ypodemsk@redhat.com>
Subject: Re: [RFC PATCH 11/14] context-tracking: Introduce work deferral infrastructure
Date: Thu, 6 Jul 2023 11:53:56 +0200 [thread overview]
Message-ID: <ZKaPNKE43MuyQKi7@lothringen> (raw)
In-Reply-To: <20230705224104.GE2813335@hirez.programming.kicks-ass.net>
On Thu, Jul 06, 2023 at 12:41:04AM +0200, Peter Zijlstra wrote:
> On Thu, Jul 06, 2023 at 12:23:57AM +0200, Frederic Weisbecker wrote:
> > If this is just about a dozen, can we stuff them in the state like in the
> > following? We can potentially add more of them especially on 64 bits we could
> > afford 30 different works, this is just shrinking the RCU extended quiescent
> > state counter space. Worst case that can happen is that RCU misses 65535
> > idle/user <-> kernel transitions and delays a grace period...
>
> We can make all this a 64bit only feature and use atomic_long_t :-)
Works for me :)
next prev parent reply other threads:[~2023-07-06 9:53 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-05 18:12 [RFC PATCH 00/14] context_tracking,x86: Defer some IPIs until a user->kernel transition Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 01/14] tracing/filters: Dynamically allocate filter_pred.regex Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 02/14] tracing/filters: Enable filtering a cpumask field by another cpumask Valentin Schneider
2023-07-05 18:54 ` Steven Rostedt
2023-07-05 18:12 ` [RFC PATCH 03/14] tracing/filters: Enable filtering a scalar field by a cpumask Valentin Schneider
2023-07-05 19:00 ` Steven Rostedt
2023-07-05 18:12 ` [RFC PATCH 04/14] tracing/filters: Enable filtering the CPU common " Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 05/14] tracing/filters: Document cpumask filtering Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 06/14] objtool: Flesh out warning related to pv_ops[] calls Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 07/14] objtool: Warn about non __ro_after_init static key usage in .noinstr Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 08/14] BROKEN: context_tracking: Make context_tracking_key __ro_after_init Valentin Schneider
2023-07-05 20:41 ` Peter Zijlstra
2023-07-05 18:12 ` [RFC PATCH 09/14] x86/kvm: Make kvm_async_pf_enabled __ro_after_init Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 10/14] x86/sev-es: Make sev_es_enable_key __ro_after_init Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 11/14] context-tracking: Introduce work deferral infrastructure Valentin Schneider
2023-07-05 22:23 ` Frederic Weisbecker
2023-07-05 22:41 ` Peter Zijlstra
2023-07-06 9:53 ` Frederic Weisbecker [this message]
2023-07-06 10:01 ` Frederic Weisbecker
2023-07-06 11:30 ` Valentin Schneider
2023-07-06 11:40 ` Frederic Weisbecker
2023-07-06 16:39 ` Paul E. McKenney
2023-07-06 18:05 ` Valentin Schneider
2023-07-06 11:55 ` Frederic Weisbecker
2023-07-05 22:39 ` Peter Zijlstra
2023-07-06 11:31 ` Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 12/14] context_tracking,x86: Defer kernel text patching IPIs Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 13/14] context_tracking,x86: Add infrastructure to defer kernel TLBI Valentin Schneider
2023-07-05 18:12 ` [RFC PATCH 14/14] x86/mm, mm/vmalloc: Defer flush_tlb_kernel_range() targeting NOHZ_FULL CPUs Valentin Schneider
2023-07-05 18:48 ` [RFC PATCH 00/14] context_tracking,x86: Defer some IPIs until a user->kernel transition Nadav Amit
2023-07-06 11:29 ` Valentin Schneider
2023-07-05 19:03 ` Steven Rostedt
2023-07-06 11:30 ` Valentin Schneider
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