Use the facility now provided by the arm_arch_timer driver to
determine whether there's a usable virtual counter for the VDSO.
Signed-off-by: Nathan Lynch <nathan_ly...@mentor.com>
---
arch/arm/kernel/vdso.c | 30 +-----------------------------
1 file changed, 1 insertion(+), 29 deletions(-)
diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c
index efe17dd9b921..f06fd6f3f65f 100644
--- a/arch/arm/kernel/vdso.c
+++ b/arch/arm/kernel/vdso.c
@@ -21,7 +21,6 @@
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/mm.h>
-#include <linux/of.h>
#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/timekeeper_internal.h>
@@ -69,33 +68,6 @@ struct elfinfo {
*/
static bool cntvct_ok __read_mostly;
-static bool __init cntvct_functional(void)
-{
- struct device_node *np;
- bool ret = false;
-
- if (!IS_ENABLED(CONFIG_ARM_ARCH_TIMER))
- goto out;
-
- /* The arm_arch_timer core should export
- * arch_timer_use_virtual or similar so we don't have to do
- * this.
- */
- np = of_find_compatible_node(NULL, NULL, "arm,armv7-timer");
- if (!np)
- goto out_put;
-
- if (of_property_read_bool(np, "arm,cpu-registers-not-fw-configured"))
- goto out_put;
-
- ret = true;
-
-out_put:
- of_node_put(np);
-out:
- return ret;
-}
-
static void * __init find_section(Elf32_Ehdr *ehdr, const char *name,
unsigned long *size)
{
@@ -208,7 +180,7 @@ static int __init vdso_init(void)
vdso_total_pages = 1; /* for the data/vvar page */
vdso_total_pages += text_pages;
- cntvct_ok = cntvct_functional();
+ cntvct_ok = arch_timer_okay_for_vdso();
patch_vdso(&vdso_start);
--
1.9.3
--
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