linux-kernel - [RFC PATCH v2 07/12] smp: Do not mark call_function

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Date:   Thu, 30 May 2019 23:36:40 -0700
From:   Nadav Amit <namit@...are.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>
Cc:     Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...el.com>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org, Nadav Amit <namit@...are.com>,
        Rik van Riel <riel@...riel.com>
Subject: [RFC PATCH v2 07/12] smp: Do not mark call_function_data as shared

cfd_data is marked as shared, but although it hold pointers to shared
data structures, it is private per core.

Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Rik van Riel <riel@...riel.com>
Cc: Andy Lutomirski <luto@...nel.org>
Signed-off-by: Nadav Amit <namit@...are.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);
 
 static DEFINE_PER_CPU_SHARED_ALIGNED(struct llist_head, call_single_queue);
 
-- 
2.20.1