Lncvrt/grub
1
0 Fork 0
mirror of https://git.savannah.gnu.org/git/grub.git synced 2026-10-20 22:48:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

arm-efi: Reduce timer event frequency by 10

Browse Source 
Timer event to keep grub msec counter was running at 1000HZ. This was too
fast for UEFI timer driver and resulted in a 10x slowdown in grub time
versus wallclock. Reduce the timer event frequency and increase tick
increment accordingly to keep better time.
This commit is contained in:
Mark Salter authored and Vladimir Serbinenko committed 2016-01-07 20:54:20 +01:00
1 parent a2dcab70f8
commit 7eb27a49e9
1 file changed
+2 -2
Download Patch File Download Diff File Expand all files Collapse all files
grub-core/kern/arm/efi/init.c
+2 -2
View File
@@ -38,7 +38,7 @@ static void
increment_timer (grub_efi_event_t event __attribute__ ((unused)), increment_timer (grub_efi_event_t event __attribute__ ((unused)),
void *context __attribute__ ((unused))) void *context __attribute__ ((unused)))
{ {
tmr++; tmr += 10;
} }
void void
@@ -52,7 +52,7 @@ grub_machine_init (void)
efi_call_5 (b->create_event, GRUB_EFI_EVT_TIMER | GRUB_EFI_EVT_NOTIFY_SIGNAL, efi_call_5 (b->create_event, GRUB_EFI_EVT_TIMER | GRUB_EFI_EVT_NOTIFY_SIGNAL,
GRUB_EFI_TPL_CALLBACK, increment_timer, NULL, &tmr_evt); GRUB_EFI_TPL_CALLBACK, increment_timer, NULL, &tmr_evt);
efi_call_3 (b->set_timer, tmr_evt, GRUB_EFI_TIMER_PERIODIC, 10000); efi_call_3 (b->set_timer, tmr_evt, GRUB_EFI_TIMER_PERIODIC, 100000);
grub_install_get_time_ms (grub_efi_get_time_ms); grub_install_get_time_ms (grub_efi_get_time_ms);
} }