From: Borislav Petkov <bp@alien8.de>
To: Juergen Gross <jgross@suse.com>
Cc: xen-devel@lists.xenproject.org, x86@kernel.org,
virtualization@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org,
kvm@vger.kernel.org, Deep Shah <sdeep@vmware.com>,
"VMware, Inc." <pv-drivers@vmware.com>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v6 02/12] x86/paravirt: switch time pvops functions to use static_call()
Date: Tue, 9 Mar 2021 19:57:37 +0100 [thread overview]
Message-ID: <20210309185737.GE699@zn.tnic> (raw)
In-Reply-To: <20210309134813.23912-3-jgross@suse.com>
On Tue, Mar 09, 2021 at 02:48:03PM +0100, Juergen Gross wrote:
> @@ -167,6 +168,17 @@ static u64 native_steal_clock(int cpu)
> return 0;
> }
>
> +DEFINE_STATIC_CALL(pv_steal_clock, native_steal_clock);
> +DEFINE_STATIC_CALL(pv_sched_clock, native_sched_clock);
> +
> +bool paravirt_using_native_sched_clock = true;
> +
> +void paravirt_set_sched_clock(u64 (*func)(void))
> +{
> + static_call_update(pv_sched_clock, func);
> + paravirt_using_native_sched_clock = (func == native_sched_clock);
> +}
What's the point of this function if there's a global
paravirt_using_native_sched_clock variable now?
Looking how the bit of information whether native_sched_clock is used,
is needed in tsc.c, it probably would be cleaner if you add a
set_sched_clock_native(void);
or so, to tsc.c instead and call that here and make that long var name a
a shorter and static one in tsc.c instead.
Hmm?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-03-09 18:58 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 13:48 [PATCH v6 00/12] x86: major paravirt cleanup Juergen Gross
2021-03-09 13:48 ` [PATCH v6 01/12] static_call: move struct static_call_key definition to static_call_types.h Juergen Gross
2021-03-09 13:48 ` [PATCH v6 02/12] x86/paravirt: switch time pvops functions to use static_call() Juergen Gross
2021-03-09 18:57 ` Borislav Petkov [this message]
2021-03-10 7:51 ` Jürgen Groß
2021-03-10 14:13 ` Borislav Petkov
2021-03-09 13:48 ` [PATCH v6 03/12] x86/alternative: drop feature parameter from ALTINSTR_REPLACEMENT() Juergen Gross
2021-03-09 19:17 ` [tip: x86/alternatives] x86/alternative: Drop unused " tip-bot2 for Juergen Gross
2021-03-09 13:48 ` [PATCH v6 04/12] x86/alternative: support not-feature Juergen Gross
2021-03-10 6:07 ` Borislav Petkov
2021-03-10 7:52 ` Jürgen Groß
2021-03-10 14:15 ` Borislav Petkov
2021-03-10 14:41 ` Jürgen Groß
2021-03-09 13:48 ` [PATCH v6 05/12] x86/alternative: support ALTERNATIVE_TERNARY Juergen Gross
2021-03-10 14:27 ` Borislav Petkov
2021-03-10 14:42 ` Jürgen Groß
2021-03-09 13:48 ` [PATCH v6 06/12] x86: add new features for paravirt patching Juergen Gross
2021-03-09 13:48 ` [PATCH v6 07/12] x86/paravirt: remove no longer needed 32-bit pvops cruft Juergen Gross
2021-03-09 13:48 ` [PATCH v6 08/12] x86/paravirt: simplify paravirt macros Juergen Gross
2021-03-09 13:48 ` [PATCH v6 09/12] x86/paravirt: switch iret pvops to ALTERNATIVE Juergen Gross
2021-03-09 13:48 ` [PATCH v6 10/12] x86/paravirt: add new macros PVOP_ALT* supporting pvops in ALTERNATIVEs Juergen Gross
2021-03-09 13:48 ` [PATCH v6 11/12] x86/paravirt: switch functions with custom code to ALTERNATIVE Juergen Gross
2021-03-09 13:48 ` [PATCH v6 12/12] x86/paravirt: have only one paravirt patch function Juergen Gross
2021-03-09 16:06 ` [PATCH v6 13/12] x86/alternative: merge include files Juergen Gross
2021-03-09 16:06 ` [PATCH v6 14/12] x86/alternative: don't open code ALTERNATIVE_TERNARY() in _static_cpu_has() Juergen Gross
2021-03-11 12:50 ` [PATCH v6 00/12] x86: major paravirt cleanup Borislav Petkov
2021-03-11 12:51 ` Borislav Petkov
2021-03-11 13:09 ` Jürgen Groß
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210309185737.GE699@zn.tnic \
--to=bp@alien8.de \
--cc=boris.ostrovsky@oracle.com \
--cc=catalin.marinas@arm.com \
--cc=haiyangz@microsoft.com \
--cc=hpa@zytor.com \
--cc=jgross@suse.com \
--cc=jmattson@google.com \
--cc=joro@8bytes.org \
--cc=kvm@vger.kernel.org \
--cc=kys@microsoft.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=mingo@redhat.com \
--cc=pbonzini@redhat.com \
--cc=peterz@infradead.org \
--cc=pv-drivers@vmware.com \
--cc=sdeep@vmware.com \
--cc=seanjc@google.com \
--cc=sstabellini@kernel.org \
--cc=sthemmin@microsoft.com \
--cc=tglx@linutronix.de \
--cc=virtualization@lists.linux-foundation.org \
--cc=vkuznets@redhat.com \
--cc=wanpengli@tencent.com \
--cc=wei.liu@kernel.org \
--cc=will@kernel.org \
--cc=x86@kernel.org \
--cc=xen-devel@lists.xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).