ARM: mcpm, perf/arm-cci: export mcpm_is_available

arndb · wildea01 · commit 73acc0315cd7 · 2018-05-29T16:53:16.000+01:00
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: 8b0c93c ("perf/arm-cci: Allow building as a module") Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Will Deacon <will.deacon@arm.com>
diff --git 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

Original file line number	Diff line number	Diff line change
`@@ -9,6 +9,7 @@`
`9`	`9`	`* published by the Free Software Foundation.`
`10`	`10`	`*/`
`11`	`11`
	`12`	`+#include <linux/export.h>`
`12`	`13`	`#include <linux/kernel.h>`
`13`	`14`	`#include <linux/init.h>`
`14`	`15`	`#include <linux/irqflags.h>`
`@@ -174,6 +175,7 @@ bool mcpm_is_available(void)`
`174`	`175`	`{`
`175`	`176`	`return (platform_ops) ? true : false;`
`176`	`177`	`}`
	`178`	`+EXPORT_SYMBOL_GPL(mcpm_is_available);`
`177`	`179`
`178`	`180`	`/*`
`179`	`181`	`* We can't use regular spinlocks. In the switcher case, it is possible`