[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 3/8] timers: use cpu_get_icount() directly
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 3/8] timers: use cpu_get_icount() directly |
Date: |
Tue, 8 Oct 2013 10:47:33 +0200 |
This will help later when we will have to place these calls in
a critical section, and thus call a version of cpu_get_icount()
that does not take the lock.
Signed-off-by: Paolo Bonzini <address@hidden>
---
cpus.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/cpus.c b/cpus.c
index 870a832..f87ff6f 100644
--- a/cpus.c
+++ b/cpus.c
@@ -224,12 +224,15 @@ static void icount_adjust(void)
int64_t cur_icount;
int64_t delta;
static int64_t last_delta;
+
/* If the VM is not running, then do nothing. */
if (!runstate_is_running()) {
return;
}
+
cur_time = cpu_get_clock();
- cur_icount = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ cur_icount = cpu_get_icount();
+
delta = cur_icount - cur_time;
/* FIXME: This is a very crude algorithm, somewhat prone to oscillation.
*/
if (delta > 0
@@ -285,7 +288,7 @@ static void icount_warp_rt(void *opaque)
* far ahead of real time.
*/
int64_t cur_time = cpu_get_clock();
- int64_t cur_icount = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ int64_t cur_icount = cpu_get_icount();
int64_t delta = cur_time - cur_icount;
qemu_icount_bias += MIN(warp_delta, delta);
}
--
1.8.3.1
[Qemu-devel] [PATCH 6/8] timers: introduce cpu_get_clock_locked, Paolo Bonzini, 2013/10/08