linux-kernel - [PATCH] [RFC] arm64: export this_cpu_has

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Message-Id: <20211029113023.760421-1-arnd@kernel.org>
Date:   Fri, 29 Oct 2021 13:30:16 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Anshuman Khandual <anshuman.khandual@....com>
Cc:     Arnd Bergmann <arnd@...db.de>, Marc Zyngier <maz@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        David Brazdil <dbrazdil@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [RFC] arm64: export this_cpu_has_cap

From: Arnd Bergmann <arnd@...db.de>

It's now used in a coresight driver that can be a loadable module:

ERROR: modpost: "this_cpu_has_cap" [drivers/hwtracing/coresight/coresight-trbe.ko] undefined!

Fixes: 8a1065127d95 ("coresight: trbe: Add infrastructure for Errata handling")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
Not sure if we actually want this to be exported, this is my local
workaround for the randconfig build bot.
---
 arch/arm64/kernel/cpufeature.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index ecbdff795f5e..beccbcfa7391 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2864,6 +2864,7 @@ bool this_cpu_has_cap(unsigned int n)
 
 	return false;
 }
+EXPORT_SYMBOL(this_cpu_has_cap);
 
 /*
  * This helper function is used in a narrow window when,
-- 
2.29.2