diff options
Diffstat (limited to 'linux_patch/0001-enable_phycnt.patch')
| -rw-r--r-- | linux_patch/0001-enable_phycnt.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/linux_patch/0001-enable_phycnt.patch b/linux_patch/0001-enable_phycnt.patch new file mode 100644 index 0000000..906690c --- /dev/null +++ b/linux_patch/0001-enable_phycnt.patch @@ -0,0 +1,27 @@ +From 366e23c82dc00189853d7ea869d1aef583bca383 Mon Sep 17 00:00:00 2001 +From: James Kung <kong1191@gmail.com> +Date: Fri, 9 Jan 2015 18:55:35 +0800 +Subject: [PATCH] Enable user access to the physical counter for performance + measurement + +--- + drivers/clocksource/arm_arch_timer.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c +index 2133f9d..3cb6d01 100644 +--- a/drivers/clocksource/arm_arch_timer.c ++++ b/drivers/clocksource/arm_arch_timer.c +@@ -338,6 +338,9 @@ static void arch_counter_set_user_access(void) + | ARCH_TIMER_VIRT_EVT_EN + | ARCH_TIMER_USR_PCT_ACCESS_EN); + ++ /* Enable user access to the physical counter */ ++ cntkctl |= ARCH_TIMER_USR_PCT_ACCESS_EN; ++ + /* Enable user access to the virtual counter */ + cntkctl |= ARCH_TIMER_USR_VCT_ACCESS_EN; + +-- +1.9.3 + |