With "initcall_debug", we report how long every PCI quirk took.
Even without "initcall_debug", report the runtime of any quirk that takes
longer than 10ms. This is to make it easier to notice quirks that slow
down boot.
This was motivated by a report from Paul Menzel that PCI final quirks took
half a second at boot.
Link: https://lkml.kernel.org/r/44cada166e42007d27b4c3e3aa0744d7@molgen.mpg.de
Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
static ktime_t fixup_debug_start(struct pci_dev *dev,
void (*fn)(struct pci_dev *dev))
{
static ktime_t fixup_debug_start(struct pci_dev *dev,
void (*fn)(struct pci_dev *dev))
{
- ktime_t calltime = 0;
-
- if (initcall_debug) {
pci_info(dev, "calling %pF @ %i\n", fn, task_pid_nr(current));
pci_info(dev, "calling %pF @ %i\n", fn, task_pid_nr(current));
- calltime = ktime_get();
- }
}
static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
}
static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
ktime_t delta, rettime;
unsigned long long duration;
ktime_t delta, rettime;
unsigned long long duration;
- if (initcall_debug) {
- rettime = ktime_get();
- delta = ktime_sub(rettime, calltime);
- duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+ rettime = ktime_get();
+ delta = ktime_sub(rettime, calltime);
+ duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+ if (initcall_debug || duration > 10000)
pci_info(dev, "%pF took %lld usecs\n", fn, duration);
pci_info(dev, "%pF took %lld usecs\n", fn, duration);