Thread (11 messages) 11 messages, 6 authors, 2021-11-02

Re: [PATCH] [RFC] arm64: export this_cpu_has_cap

From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: 2021-10-29 13:31:29
Also in: lkml

Hi Arnd

Thanks for the fix.

On 29/10/2021 12:30, Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@arndb.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")
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Suzuki K Poulose <suzuki.poulose@arm.com>

Will, Catalin, Mathieu,

Do you have a preference on how this fix can be pulled in ? This may
be safe to go via coresight tree if it is not too late. Otherwise,
it could go via the arm64 tree.

Suzuki
quoted hunk ↗ jump to hunk
Signed-off-by: Arnd Bergmann <arnd@arndb.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,

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