linux-kernel - [PATCH] arm64: cpufeature: Export this_cpu_has

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Message-Id: <20211103221256.725080-1-suzuki.poulose@arm.com>
Date:   Wed,  3 Nov 2021 22:12:56 +0000
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     will@...nel.org
Cc:     arnd@...nel.org, mathieu.poirier@...aro.org,
        catalin.marinas@....com, gregkh@...uxfoundation.org,
        anshuman.khandual@....com, linux-arm-kernel@...ts.infradead.org,
        coresight@...ts.linaro.org, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Suzuki K Poulose <suzuki.poulose@....com>
Subject: [PATCH] arm64: cpufeature: Export this_cpu_has_cap helper

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

Export the this_cpu_has_cap() for use by modules. This is
used by TRBE driver. Without this patch, TRBE will fail
to build as a module :

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

Fixes: 8a1065127d95 ("coresight: trbe: Add infrastructure for Errata handling")
Cc: Will Deacon <will@...nel.org>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Anshuman Khandual <anshuman.khandual@....com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
[ change to EXPORT_SYMBOL_GPL ]
Acked-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 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 f8a3067d10c6..82e68c69bb99 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2839,6 +2839,7 @@ bool this_cpu_has_cap(unsigned int n)
 
 	return false;
 }
+EXPORT_SYMBOL_GPL(this_cpu_has_cap);
 
 /*
  * This helper function is used in a narrow window when,
-- 
2.25.4