Commit-ID: ea99110dd024d2f31bde19dda049f3fbf3816a70 Gitweb: https://git.kernel.org/tip/ea99110dd024d2f31bde19dda049f3fbf3816a70 Author: Thomas Gleixner <t...@linutronix.de> AuthorDate: Sun, 23 Jun 2019 15:24:07 +0200 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Fri, 28 Jun 2019 00:57:26 +0200
x86/hpet: Carve out shareable parts of init_one_hpet_msi_clockevent() To finally remove the static channel0/clockevent storage and to utilize the channel 0 storage in hpet_base, it's required to run time initialize the clockevent. The MSI clockevents already have a run time init function. Carve out the parts which can be shared between the legacy and the MSI implementation. Signed-off-by: Thomas Gleixner <t...@linutronix.de> Reviewed-by: Ingo Molnar <mi...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Ricardo Neri <ricardo.neri-calde...@linux.intel.com> Cc: Ashok Raj <ashok....@intel.com> Cc: Andi Kleen <andi.kl...@intel.com> Cc: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> Cc: Stephane Eranian <eran...@google.com> Cc: Ravi Shankar <ravi.v.shan...@intel.com> Link: https://lkml.kernel.org/r/20190623132436.552451...@linutronix.de --- arch/x86/kernel/hpet.c | 33 ++++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-) diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 47eb4d36864e..80497fe5354c 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -411,6 +411,25 @@ hpet_clkevt_set_next_event(unsigned long delta, struct clock_event_device *evt) return res < HPET_MIN_CYCLES ? -ETIME : 0; } +static void hpet_init_clockevent(struct hpet_channel *hc, unsigned int rating) +{ + struct clock_event_device *evt = &hc->evt; + + evt->rating = rating; + evt->irq = hc->irq; + evt->name = hc->name; + evt->cpumask = cpumask_of(hc->cpu); + evt->set_state_oneshot = hpet_clkevt_set_state_oneshot; + evt->set_next_event = hpet_clkevt_set_next_event; + evt->set_state_shutdown = hpet_clkevt_set_state_shutdown; + + evt->features = CLOCK_EVT_FEAT_ONESHOT; + if (hc->boot_cfg & HPET_TN_PERIODIC) { + evt->features |= CLOCK_EVT_FEAT_PERIODIC; + evt->set_state_periodic = hpet_clkevt_set_state_periodic; + } +} + /* * The HPET clock event device wrapped in a channel for conversion */ @@ -510,22 +529,10 @@ static void init_one_hpet_msi_clockevent(struct hpet_channel *hc, int cpu) hc->cpu = cpu; per_cpu(cpu_hpet_channel, cpu) = hc; - evt->name = hc->name; hpet_setup_msi_irq(hc); - evt->irq = hc->irq; - evt->rating = 110; - evt->features = CLOCK_EVT_FEAT_ONESHOT; - if (hc->boot_cfg & HPET_TN_PERIODIC) { - evt->features |= CLOCK_EVT_FEAT_PERIODIC; - evt->set_state_periodic = hpet_clkevt_set_state_periodic; - } - - evt->set_state_shutdown = hpet_clkevt_set_state_shutdown; - evt->set_state_oneshot = hpet_clkevt_set_state_oneshot; - evt->set_next_event = hpet_clkevt_set_next_event; + hpet_init_clockevent(hc, 110); evt->tick_resume = hpet_clkevt_msi_resume; - evt->cpumask = cpumask_of(hc->cpu); clockevents_config_and_register(evt, hpet_freq, HPET_MIN_PROG_DELTA, 0x7FFFFFFF);
