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From: Christopher Covington <cov@codeaurora.org>
Cc: Peter Maydell <peter.maydell@linaro.org>,
	Aaron Lindsay <alindsay@codeaurora.org>,
	qemu-trivial@nongnu.org,
	Peter Crosthwaite <crosthwaite.peter@gmail.com>,
	qemu-devel@nongnu.org,
	Alistair Francis <alistair.francis@xilinx.com>,
	Christopher Covington <cov@codeaurora.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Richard Henderson <rth@twiddle.net>
Subject: [Qemu-devel] [PATCH] Rename cpu_get_icount_{locked,biased}
Date: Wed, 10 Feb 2016 09:06:32 -0500	[thread overview]
Message-ID: <1455113192-27139-1-git-send-email-cov@codeaurora.org> (raw)

The function does not provide locking but rather adds a bias value.

Signed-off-by: Christopher Covington <cov@codeaurora.org>
---
 cpus.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/cpus.c b/cpus.c
index 898426c..50403c4 100644
--- a/cpus.c
+++ b/cpus.c
@@ -164,7 +164,7 @@ int64_t cpu_get_icount_raw(void)
 }
 
 /* Return the virtual CPU time, based on the instruction counter.  */
-static int64_t cpu_get_icount_locked(void)
+static int64_t cpu_get_icount_biased(void)
 {
     int64_t icount = cpu_get_icount_raw();
     return timers_state.qemu_icount_bias + cpu_icount_to_ns(icount);
@@ -177,7 +177,7 @@ int64_t cpu_get_icount(void)
 
     do {
         start = seqlock_read_begin(&timers_state.vm_clock_seqlock);
-        icount = cpu_get_icount_locked();
+        icount = cpu_get_icount_biased();
     } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start));
 
     return icount;
@@ -293,7 +293,7 @@ static void icount_adjust(void)
 
     seqlock_write_lock(&timers_state.vm_clock_seqlock);
     cur_time = cpu_get_clock_locked();
-    cur_icount = cpu_get_icount_locked();
+    cur_icount = cpu_get_icount_biased();
 
     delta = cur_icount - cur_time;
     /* FIXME: This is a very crude algorithm, somewhat prone to oscillation.  */
@@ -356,7 +356,7 @@ static void icount_warp_rt(void)
              * In adaptive mode, do not let QEMU_CLOCK_VIRTUAL run too
              * far ahead of real time.
              */
-            int64_t cur_icount = cpu_get_icount_locked();
+            int64_t cur_icount = cpu_get_icount_biased();
             int64_t delta = clock - cur_icount;
             warp_delta = MIN(warp_delta, delta);
         }
-- 
Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

             reply	other threads:[~2016-02-10 14:06 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-10 14:06 Christopher Covington [this message]
2016-02-10 14:13 ` [Qemu-devel] [PATCH] Rename cpu_get_icount_{locked,biased} Paolo Bonzini

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