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linux/arch/tile/kernel
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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 tile/vdso: emit a GNU hash as well 2015-08-06 20:22:40 -04:00
asm-offsets.c
backtrace.c
compat.c tile 32-bit big-endian: fix bugs in syscall argument order 2016-06-15 15:31:01 -04:00
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
early_printk.c
entry.S nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
ftrace.c ftrace: Add return address pointer to ftrace_ret_stack 2016-08-24 12:15:14 +02:00
hardwall.c
head_32.S
head_64.S
hvglue.S
hvglue_trace.c
intvec_32.S arch/tile: move user_exit() to early kernel entry sequence 2016-01-18 14:49:30 -05:00
intvec_64.S arch/tile: move user_exit() to early kernel entry sequence 2016-01-18 14:49:30 -05:00
irq.c
jump_label.c tile/jump_label: add jump label support for TILE-Gx 2016-01-04 15:09:31 -05:00
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 tile: define a macro ktext_writable_addr to get writable kernel text address 2016-01-04 15:09:31 -05:00
machine_kexec.c
Makefile tile/jump_label: add jump label support for TILE-Gx 2016-01-04 15:09:31 -05:00
mcount_64.S
messaging.c
module.c tile-module: Rename jump labels in module_alloc() 2016-12-16 15:32:29 -05:00
pci-dma.c treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
pci.c tile: use __ro_after_init instead of tile-specific __write_once 2016-12-16 15:32:29 -05:00
pci_gx.c tile/pci_gx: fix spelling mistake: "delievered" -> "delivered" 2016-12-16 15:32:29 -05:00
perf_event.c perf core: Pass max stack as a perf_callchain_entry context 2016-05-16 23:11:50 -03:00
pmc.c arch/tile: adopt the new nmi_backtrace framework 2016-10-07 18:46:30 -07:00
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 tile: use __ro_after_init instead of tile-specific __write_once 2016-12-16 15:32:29 -05:00
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 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
smp.c tile: use __ro_after_init instead of tile-specific __write_once 2016-12-16 15:32:29 -05:00
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 tile 32-bit big-endian: fix bugs in syscall argument order 2016-06-15 15:31:01 -04:00
sysfs.c bus: subsys: update return type of ->remove_dev() to void 2015-08-05 17:08:14 -07:00
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 tile: fix build failure 2015-09-28 11:23:39 -04:00
vdso.c
vmlinux.lds.S nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00