linux/arch/tile/kernel
Nicolai Stange 45b586ef23 tile/time: Set ->min_delta_ticks and ->max_delta_ticks
In preparation for making the clockevents core NTP correction aware,
all clockevent device drivers must set ->min_delta_ticks and
->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
clockevent device's rate is going to change dynamically and thus, the
ratio of ns to ticks ceases to stay invariant.

Currently, the tile's timer clockevent device is initialized as follows:

  evt->max_delta_ns = clockevent_delta2ns(MAX_TICK, evt);

and

  .min_delta_ns = 1000,

The first one translates to a ->max_delta_ticks value of MAX_TICK.
For the latter, note that the clockevent core will superimpose a
minimum of 1us by itself -- setting ->min_delta_ticks to 1 is safe here.

Initialize ->min_delta_ticks and ->max_delta_ticks with these values.

This patch alone doesn't introduce any change in functionality as the
clockevents core still looks exclusively at the (untouched) ->min_delta_ns
and ->max_delta_ns. As soon as this has changed, a followup patch will
purge the initialization of ->min_delta_ns and ->max_delta_ns from this
driver.

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2017-04-14 13:11:21 -07:00
..
vdso
asm-offsets.c
backtrace.c
compat_signal.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
compat.c
early_printk.c
entry.S
ftrace.c
hardwall.c
head_32.S
head_64.S
hvglue_trace.c
hvglue.S
intvec_32.S
intvec_64.S
irq.c
jump_label.c
kgdb.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
kprobes.c
machine_kexec.c
Makefile
mcount_64.S
messaging.c
module.c
pci_gx.c
pci-dma.c treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
pci.c
perf_event.c
pmc.c
proc.c
process.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
ptrace.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
reboot.c
regs_32.S
regs_64.S
relocate_kernel_32.S
relocate_kernel_64.S
setup.c
signal.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
single_step.c
smp.c
smpboot.c sched/headers: Move task->mm handling methods to <linux/sched/mm.h> 2017-03-03 01:43:28 +01:00
stack.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
sys.c
sysfs.c
tile-desc_32.c
tile-desc_64.c
time.c tile/time: Set ->min_delta_ticks and ->max_delta_ticks 2017-04-14 13:11:21 -07:00
tlb.c
traps.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
unaligned.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h> 2017-03-02 08:42:35 +01:00
usb.c
vdso.c
vmlinux.lds.S