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| author | Romain Izard <romain.izard.pro@gmail.com> | 2017-03-09 17:58:38 +0100 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2017-03-11 22:03:34 +0100 |
| commit | 33d8c15559df4f0bce25d7e16ebb5879e249f2e7 (patch) | |
| tree | 1dcd2b6a5ad10962a10bbb4bb224549e60be6ef7 /drivers/clocksource | |
| parent | jiffies: Revert bogus conversion of NSEC_PER_SEC to TICK_NSEC (diff) | |
| download | linux-33d8c15559df4f0bce25d7e16ebb5879e249f2e7.tar.xz linux-33d8c15559df4f0bce25d7e16ebb5879e249f2e7.zip | |
Revert "clocksource/drivers/tcb_clksrc: Use 32 bit tcb as sched_clock"
This reverts commit 7b9f1d16e6d1 ("clocksource/drivers/tcb_clksrc: Use
32 bit tcb as sched_clock"). In the current state, the kernel warns
against a late registration of the new sched_clock, the printk clock
resets after only a few minutes, and it seems that scheduling can be
affected as well.
Signed-off-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/tcb_clksrc.c | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c index 745844ee973e..d4ca9962a759 100644 --- a/drivers/clocksource/tcb_clksrc.c +++ b/drivers/clocksource/tcb_clksrc.c @@ -10,7 +10,6 @@ #include <linux/io.h> #include <linux/platform_device.h> #include <linux/atmel_tc.h> -#include <linux/sched_clock.h> /* @@ -57,14 +56,9 @@ static u64 tc_get_cycles(struct clocksource *cs) return (upper << 16) | lower; } -static u32 tc_get_cv32(void) -{ - return __raw_readl(tcaddr + ATMEL_TC_REG(0, CV)); -} - static u64 tc_get_cycles32(struct clocksource *cs) { - return tc_get_cv32(); + return __raw_readl(tcaddr + ATMEL_TC_REG(0, CV)); } static struct clocksource clksrc = { @@ -75,11 +69,6 @@ static struct clocksource clksrc = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; -static u64 notrace tc_read_sched_clock(void) -{ - return tc_get_cv32(); -} - #ifdef CONFIG_GENERIC_CLOCKEVENTS struct tc_clkevt_device { @@ -350,9 +339,6 @@ static int __init tcb_clksrc_init(void) clksrc.read = tc_get_cycles32; /* setup ony channel 0 */ tcb_setup_single_chan(tc, best_divisor_idx); - - /* register sched_clock on chips with single 32 bit counter */ - sched_clock_register(tc_read_sched_clock, 32, divided_rate); } else { /* tclib will give us three clocks no matter what the * underlying platform supports. |