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x86/hpet: Shuffle code around for readability sake 

It doesn't make sense to have init functions in the middle of other
code. Aside of that, further changes in that area create horrible diffs if
the code stays where it is.

No functional change

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Ravi Shankar <ravi.v.shankar@intel.com>
Link: https://lkml.kernel.org/r/20190623132434.951733064@linutronix.de
This commit is contained in:
Thomas Gleixner 2019-06-23 15:23:50 +02:00
parent 8c273f2c81
commit 6bdec41a0c
1 changed files with 41 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

81
arch/x86/kernel/hpet.c
View File

@ -559,6 +559,47 @@ static void init_one_hpet_msi_clockevent(struct hpet_dev *hdev, int cpu)
0x7FFFFFFF);
}
static struct hpet_dev *hpet_get_unused_timer(void)
{
int i;
if (!hpet_devs)
return NULL;
for (i = 0; i < hpet_num_timers; i++) {
struct hpet_dev *hdev = &hpet_devs[i];
if (!(hdev->flags & HPET_DEV_VALID))
continue;
if (test_and_set_bit(HPET_DEV_USED_BIT,
(unsigned long *)&hdev->flags))
continue;
return hdev;
}
return NULL;
}
static int hpet_cpuhp_online(unsigned int cpu)
{
struct hpet_dev *hdev = hpet_get_unused_timer();
if (hdev)
init_one_hpet_msi_clockevent(hdev, cpu);
return 0;
}
static int hpet_cpuhp_dead(unsigned int cpu)
{
struct hpet_dev *hdev = per_cpu(cpu_hpet_dev, cpu);
if (!hdev)
return 0;
free_irq(hdev->irq, hdev);
hdev->flags &= ~HPET_DEV_USED;
per_cpu(cpu_hpet_dev, cpu) = NULL;
return 0;
}
#ifdef CONFIG_HPET
/* Reserve at least one timer for userspace (/dev/hpet) */
#define RESERVE_TIMERS 1
@ -644,46 +685,6 @@ static void __init hpet_reserve_msi_timers(struct hpet_data *hd)
}
#endif
static struct hpet_dev *hpet_get_unused_timer(void)
{
int i;
if (!hpet_devs)
return NULL;
for (i = 0; i < hpet_num_timers; i++) {
struct hpet_dev *hdev = &hpet_devs[i];
if (!(hdev->flags & HPET_DEV_VALID))
continue;
if (test_and_set_bit(HPET_DEV_USED_BIT,
(unsigned long *)&hdev->flags))
continue;
return hdev;
}
return NULL;
}
static int hpet_cpuhp_online(unsigned int cpu)
{
struct hpet_dev *hdev = hpet_get_unused_timer();
if (hdev)
init_one_hpet_msi_clockevent(hdev, cpu);
return 0;
}
static int hpet_cpuhp_dead(unsigned int cpu)
{
struct hpet_dev *hdev = per_cpu(cpu_hpet_dev, cpu);
if (!hdev)
return 0;
free_irq(hdev->irq, hdev);
hdev->flags &= ~HPET_DEV_USED;
per_cpu(cpu_hpet_dev, cpu) = NULL;
return 0;
}
#else
static inline void hpet_msi_capability_lookup(unsigned int start_timer) { }