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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-21 11:07:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-21 11:07:02 -0700 |
| commit | 9dca3432ee063b70a4cfb3f0857d0aeef7b84fa8 (patch) | |
| tree | 44a4b95e489cfbe91ccc7673d993dd0983ed681c /arch/um/kernel/time.c | |
| parent | Merge tag 'mtd/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux (diff) | |
| parent | um: irq: Fix LAST_IRQ usage in init_IRQ() (diff) | |
| download | linux-dev-9dca3432ee063b70a4cfb3f0857d0aeef7b84fa8.tar.xz linux-dev-9dca3432ee063b70a4cfb3f0857d0aeef7b84fa8.zip | |
Merge tag 'for-linus-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger:
- virtio support
- fixes for our new time travel mode
- various improvements to make lockdep and kasan work better
- SPDX header updates
* tag 'for-linus-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (25 commits)
um: irq: Fix LAST_IRQ usage in init_IRQ()
um: Add SPDX headers for files in arch/um/include
um: Add SPDX headers for files in arch/um/os-Linux
um: Add SPDX headers to files in arch/um/kernel/
um: Add SPDX headers for files in arch/um/drivers
um: virtio: Implement VHOST_USER_PROTOCOL_F_REPLY_ACK
um: virtio: Implement VHOST_USER_PROTOCOL_F_SLAVE_REQ
um: drivers: Add virtio vhost-user driver
um: Use real DMA barriers
um: Don't use generic barrier.h
um: time-travel: Restrict time update in IRQ handler
um: time-travel: Fix periodic timers
um: Enable CONFIG_CONSTRUCTORS
um: Place (soft)irq text with macros
um: Fix VDSO compiler warning
um: Implement TRACE_IRQFLAGS_SUPPORT
um: Remove misleading #define ARCh_IRQ_ENABLED
um: Avoid using uninitialized regs
um: Remove sig_info[SIGALRM]
um: Error handling fixes in vector drivers
...
Diffstat (limited to 'arch/um/kernel/time.c')
| -rw-r--r-- | arch/um/kernel/time.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c index 234757233355..94ea87bd231c 100644 --- a/arch/um/kernel/time.c +++ b/arch/um/kernel/time.c @@ -1,9 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2015 Anton Ivanov (aivanov@{brocade.com,kot-begemot.co.uk}) * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de) * Copyright (C) 2012-2014 Cisco Systems * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL */ #include <linux/clockchips.h> @@ -39,7 +39,15 @@ void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs) { unsigned long flags; - if (time_travel_mode != TT_MODE_OFF) + /* + * In basic time-travel mode we still get real interrupts + * (signals) but since we don't read time from the OS, we + * must update the simulated time here to the expiry when + * we get a signal. + * This is not the case in inf-cpu mode, since there we + * never get any real signals from the OS. + */ + if (time_travel_mode == TT_MODE_BASIC) time_travel_set_time(time_travel_timer_expiry); local_irq_save(flags); @@ -65,6 +73,7 @@ static int itimer_set_periodic(struct clock_event_device *evt) if (time_travel_mode != TT_MODE_OFF) { time_travel_set_timer_mode(TT_TMR_PERIODIC); time_travel_set_timer_expiry(time_travel_time + interval); + time_travel_set_timer_interval(interval); } if (time_travel_mode != TT_MODE_INFCPU) |