Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH] ARM: mcpm, perf/arm-cci: export mcpm_is_available | Date | Mon, 28 May 2018 17:44:36 +0200 |
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Now that the ARM CCI PMU driver can be built as a loadable module, we get a link failure when MCPM is enabled:
ERROR: "mcpm_is_available" [drivers/perf/arm-cci.ko] undefined!
The simplest fix is to export that helper function.
Fixes: 8b0c93c20ef7 ("perf/arm-cci: Allow building as a module") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- The patch that caused this is currently part of the arm-perf/for-next/perf branch, it would be good to have the fix there as well. --- arch/arm/common/mcpm_entry.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c index ed9e87ddbb06..037a4479b8c3 100644 --- a/arch/arm/common/mcpm_entry.c +++ b/arch/arm/common/mcpm_entry.c @@ -9,6 +9,7 @@ * published by the Free Software Foundation. */ +#include <linux/export.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/irqflags.h> @@ -174,6 +175,7 @@ bool mcpm_is_available(void) { return (platform_ops) ? true : false; } +EXPORT_SYMBOL_GPL(mcpm_is_available); /* * We can't use regular spinlocks. In the switcher case, it is possible -- 2.9.0
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