From: Nadav Amit <namit@vmware.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@intel.com>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
the arch/x86 maintainers <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Rik van Riel <riel@surriel.com>
Subject: Re: [RFC PATCH v2 07/12] smp: Do not mark call_function_data as shared
Date: Fri, 31 May 2019 17:50:33 +0000 [thread overview]
Message-ID: <D35EA688-7FCA-4D64-8C9E-9303827BC582@vmware.com> (raw)
In-Reply-To: <20190531101716.GN2623@hirez.programming.kicks-ass.net>
> On May 31, 2019, at 3:17 AM, Peter Zijlstra <peterz@infradead.org> wrote:
>
> On Thu, May 30, 2019 at 11:36:40PM -0700, Nadav Amit wrote:
>> cfd_data is marked as shared, but although it hold pointers to shared
>> data structures, it is private per core.
>>
>> Cc: Peter Zijlstra <peterz@infradead.org>
>> Cc: Thomas Gleixner <tglx@linutronix.de>
>> Cc: Rik van Riel <riel@surriel.com>
>> Cc: Andy Lutomirski <luto@kernel.org>
>> Signed-off-by: Nadav Amit <namit@vmware.com>
>> ---
>> kernel/smp.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/kernel/smp.c b/kernel/smp.c
>> index 6b411ee86ef6..f1a358f9c34c 100644
>> --- a/kernel/smp.c
>> +++ b/kernel/smp.c
>> @@ -33,7 +33,7 @@ struct call_function_data {
>> cpumask_var_t cpumask_ipi;
>> };
>>
>> -static DEFINE_PER_CPU_SHARED_ALIGNED(struct call_function_data, cfd_data);
>> +static DEFINE_PER_CPU(struct call_function_data, cfd_data);
>
> Should that not be DEFINE_PER_CPU_ALIGNED() then?
Yes. I don’t know what I was thinking. I’ll change it.
next prev parent reply other threads:[~2019-05-31 17:50 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-31 6:36 [RFC PATCH v2 00/12] x86: Flush remote TLBs concurrently and async Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 01/12] smp: Remove smp_call_function() and on_each_cpu() return values Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 02/12] smp: Run functions concurrently in smp_call_function_many() Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 03/12] x86/mm/tlb: Refactor common code into flush_tlb_on_cpus() Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 04/12] x86/mm/tlb: Flush remote and local TLBs concurrently Nadav Amit
2019-05-31 11:48 ` Juergen Gross
2019-05-31 19:44 ` Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 05/12] x86/mm/tlb: Optimize local TLB flushes Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 06/12] KVM: x86: Provide paravirtualized flush_tlb_multi() Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 07/12] smp: Do not mark call_function_data as shared Nadav Amit
2019-05-31 10:17 ` Peter Zijlstra
2019-05-31 17:50 ` Nadav Amit [this message]
2019-05-31 6:36 ` [RFC PATCH v2 08/12] x86/tlb: Privatize cpu_tlbstate Nadav Amit
2019-05-31 18:48 ` Andy Lutomirski
2019-05-31 19:42 ` Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 09/12] x86/apic: Use non-atomic operations when possible Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 10/12] smp: Enable data inlining for inter-processor function call Nadav Amit
2019-05-31 6:36 ` [RFC PATCH v2 11/12] x86/mm/tlb: Use async and inline messages for flushing Nadav Amit
2019-05-31 10:57 ` Peter Zijlstra
2019-05-31 18:29 ` Nadav Amit
2019-05-31 19:20 ` Jann Horn
2019-05-31 20:04 ` Nadav Amit
2019-05-31 20:37 ` Jann Horn
2019-05-31 18:44 ` Andy Lutomirski
2019-05-31 19:31 ` Nadav Amit
2019-05-31 20:13 ` Dave Hansen
2019-05-31 20:37 ` Andy Lutomirski
2019-05-31 20:42 ` Nadav Amit
2019-05-31 21:06 ` Dave Hansen
2019-05-31 21:14 ` Andy Lutomirski
2019-05-31 21:33 ` Nadav Amit
2019-05-31 21:47 ` Andy Lutomirski
2019-05-31 22:07 ` Nadav Amit
2019-06-07 5:28 ` Nadav Amit
2019-06-07 16:42 ` Andy Lutomirski
2019-05-31 6:36 ` [RFC PATCH v2 12/12] x86/mm/tlb: Reverting the removal of flush_tlb_info from stack Nadav Amit
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