diff options
author | Linus Walleij <linus.walleij@linaro.org> | 2018-03-18 17:48:59 +0100 |
---|---|---|
committer | Linus Walleij <linus.walleij@linaro.org> | 2018-03-18 17:48:59 +0100 |
commit | 95260c17b27e4bdacf85022e629fb701b42cc190 (patch) | |
tree | cfc6963180d99e5f36752ca028821aaa109e860d /arch/parisc/kernel/time.c | |
parent | gpio: mockup: Update Bamvors mail address (diff) | |
parent | Linux 4.16-rc5 (diff) | |
download | linux-95260c17b27e4bdacf85022e629fb701b42cc190.tar.xz linux-95260c17b27e4bdacf85022e629fb701b42cc190.zip |
Merge tag 'v4.16-rc5' into devel
Linux 4.16-rc5 merged into the GPIO devel branch to resolve
a nasty conflict between fixes and devel in the RCAR driver.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/parisc/kernel/time.c')
-rw-r--r-- | arch/parisc/kernel/time.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c index 4b8fd6dc22da..f7e684560186 100644 --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -76,10 +76,10 @@ irqreturn_t __irq_entry timer_interrupt(int irq, void *dev_id) next_tick = cpuinfo->it_value; /* Calculate how many ticks have elapsed. */ + now = mfctl(16); do { ++ticks_elapsed; next_tick += cpt; - now = mfctl(16); } while (next_tick - now > cpt); /* Store (in CR16 cycles) up to when we are accounting right now. */ @@ -103,16 +103,17 @@ irqreturn_t __irq_entry timer_interrupt(int irq, void *dev_id) * if one or the other wrapped. If "now" is "bigger" we'll end up * with a very large unsigned number. */ - while (next_tick - mfctl(16) > cpt) + now = mfctl(16); + while (next_tick - now > cpt) next_tick += cpt; /* Program the IT when to deliver the next interrupt. * Only bottom 32-bits of next_tick are writable in CR16! * Timer interrupt will be delivered at least a few hundred cycles - * after the IT fires, so if we are too close (<= 500 cycles) to the + * after the IT fires, so if we are too close (<= 8000 cycles) to the * next cycle, simply skip it. */ - if (next_tick - mfctl(16) <= 500) + if (next_tick - now <= 8000) next_tick += cpt; mtctl(next_tick, 16); @@ -248,7 +249,7 @@ static int __init init_cr16_clocksource(void) * different sockets, so mark them unstable and lower rating on * multi-socket SMP systems. */ - if (num_online_cpus() > 1) { + if (num_online_cpus() > 1 && !running_on_qemu) { int cpu; unsigned long cpu0_loc; cpu0_loc = per_cpu(cpu_data, 0).cpu_loc; |