Commit Graph

61 Commits

Author SHA1 Message Date
Stefan Weil
f26e5a54f0 qemu-timer: Fix compilation of new timer code for w32, w64
qemu_next_alarm_deadline() is needed by MinGW, too.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-02-07 19:50:29 +00:00
Paolo Bonzini
4c3d45eb69 Unify alarm deadline computation
This patch shows how using the correct formula for
qemu_next_deadline_dyntick can simplify the code of
host_alarm_handler and eliminate useless duplication.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-02-04 06:33:26 -06:00
Paolo Bonzini
6ad0a1ed21 Correct alarm deadline computation
When the QEMU_CLOCK_HOST clock was added, computation of its
deadline was added to qemu_next_deadline, which is correct but
incomplete.

I noticed this by reading the very convoluted rules whereby
qemu_next_deadline_dyntick is computed, which miss QEMU_CLOCK_HOST
when use_icount is true.  This patch inlines qemu_next_deadline
into qemu_next_deadline_dyntick, and then corrects the logic to skip
only QEMU_CLOCK_VIRTUAL when use_icount is true.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-02-04 06:33:26 -06:00
Paolo Bonzini
9c13246ac1 use nanoseconds everywhere for timeout computation
Suggested by Aurelien Jarno.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-02-04 06:33:26 -06:00
Edgar E. Iglesias
225d02cd1a Avoid deadlock whith iothread and icount
When using the iothread together with icount, make sure the
qemu_icount counter makes forward progress when the vcpu is
idle to avoid deadlocks.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-01-23 04:44:51 +01:00
Blue Swirl
c57c846a80 qemu-timer: move commonly used timer code to qemu-timer-common
Move timer init functions to a new file, qemu-timer-common.c. Make other
critical timer functions inlined to preserve performance in
qemu-timer.c, also move muldiv64() (used by the inline functions)
to qemu-timer.h.

Adjust block/raw-posix.c and simpletrace.c to use get_clock() directly.
Remove a similar/duplicate definition in qemu-tool.c.

Adjust hw/omap_clk.c to include qemu-timer.h because muldiv64() is used
there.

After this change, tracing can be used also for user code and
simpletrace on Win32.

Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Acked-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-23 15:24:07 +00:00
Alex Williamson
0be71e324f savevm: Add DeviceState param
When available, we'd like to be able to access the DeviceState
when registering a savevm.  For buses with a get_dev_path()
function, this will allow us to create more unique savevm
id strings.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-07-06 10:36:28 -05:00
Blue Swirl
29e922b61f Compile qemu-timer only once
Arrange various declarations so that also non-CPU code can access
them, adjust users.

Move CPU specific code to cpus.c.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-03-29 19:24:00 +00:00
Juergen Lock
444593493c Add a missing #include for FreeBSD hosts
Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-27 14:38:25 +01:00
Paolo Bonzini
ca5a2a4b12 fix race between timer firing vs. alarm_timer->pending = 0
The period for Win32 timers is very short and always the same
independent of dynticks, so it's possible that the timer fires
before qemu_run_all_timers has reset alarm_timer->pending to zero.
Reset alarm_timer->pending before rearming.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-27 14:05:07 +01:00
Paolo Bonzini
db1a49726c split out qemu-timer.c
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-17 11:16:15 -05:00