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Re: [PATCH 0/5] locking/qspinlock: Add contended_release tracepoint
- To: Dmitry Ilvokhin <d@xxxxxxxxxxxx>
- From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- Date: Tue, 4 Aug 2026 12:39:38 +0200
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- Cc: Ingo Molnar <mingo@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Boqun Feng <boqun@xxxxxxxxxx>, Waiman Long <longman@xxxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>, Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>, Wei Liu <wei.liu@xxxxxxxxxx>, Dexuan Cui <decui@xxxxxxxxxxxxx>, Long Li <longli@xxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Ajay Kaher <ajay.kaher@xxxxxxxxxxxx>, Alexey Makhalov <alexey.makhalov@xxxxxxxxxxxx>, Broadcom internal kernel review list <bcm-kernel-feedback-list@xxxxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>, Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>, Josh Poimboeuf <jpoimboe@xxxxxxxxxx>, Jason Baron <jbaron@xxxxxxxxxx>, Alice Ryhl <aliceryhl@xxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Ard Biesheuvel <ardb@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-trace-kernel@xxxxxxxxxxxxxxx, kernel-team@xxxxxxxx
- Delivery-date: Tue, 04 Aug 2026 10:40:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue, Aug 04, 2026 at 07:15:40AM +0000, Dmitry Ilvokhin wrote:
> Patch 1 is Peter's draft from [1] and is missing his Signed-off-by.
> Peter, please add it if you are happy with the patch.
>
> Dmitry Ilvokhin (4):
> locking: Factor out queued_spin_release()
> locking/qspinlock: Add contended_release tracepoint
> tracing/lock: Use TRACE_EVENT_FN() for contended_release
> x86/paravirt: Trace contended_release on unlock
>
> Peter Zijlstra (1):
> x86/paravirt: Use static_call() for the paravirt spinlock ops
Right, this all looks nice. Let me go queue this for the robots.
Thanks!
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