From: Christopher Covington <c...@codeaurora.org>
This should help clarify the purpose of the function that returns
the host system's CPU cycle count.
Signed-off-by: Christopher Covington <c...@codeaurora.org>
Acked-by: Paolo Bonzini <pbonz...@redhat.com>
ppc portion
Acked-by: David Gibson <da...@gibson.dropbear.id.au>
Signed-off-by: Michael Tokarev <m...@tls.msk.ru>
---
bsd-user/main.c | 2 +-
cpus.c | 6 +++---
hw/intc/xics.c | 2 +-
hw/ppc/ppc.c | 4 ++--
include/qemu/timer.h | 20 ++++++++++----------
linux-user/main.c | 4 ++--
target-alpha/sys_helper.c | 2 +-
7 files changed, 20 insertions(+), 20 deletions(-)
diff --git a/bsd-user/main.c b/bsd-user/main.c
index f0a1268..adf2de0 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -108,7 +108,7 @@ void cpu_list_unlock(void)
uint64_t cpu_get_tsc(CPUX86State *env)
{
- return cpu_get_real_ticks();
+ return cpu_get_host_ticks();
}
static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
diff --git a/cpus.c b/cpus.c
index d44c0ed..d2e9e4f 100644
--- a/cpus.c
+++ b/cpus.c
@@ -199,7 +199,7 @@ int64_t cpu_get_ticks(void)
ticks = timers_state.cpu_ticks_offset;
if (timers_state.cpu_ticks_enabled) {
- ticks += cpu_get_real_ticks();
+ ticks += cpu_get_host_ticks();
}
if (timers_state.cpu_ticks_prev > ticks) {
@@ -247,7 +247,7 @@ void cpu_enable_ticks(void)
/* Here, the really thing protected by seqlock is cpu_clock_offset. */
seqlock_write_lock(&timers_state.vm_clock_seqlock);
if (!timers_state.cpu_ticks_enabled) {
- timers_state.cpu_ticks_offset -= cpu_get_real_ticks();
+ timers_state.cpu_ticks_offset -= cpu_get_host_ticks();
timers_state.cpu_clock_offset -= get_clock();
timers_state.cpu_ticks_enabled = 1;
}
@@ -263,7 +263,7 @@ void cpu_disable_ticks(void)
/* Here, the really thing protected by seqlock is cpu_clock_offset. */
seqlock_write_lock(&timers_state.vm_clock_seqlock);
if (timers_state.cpu_ticks_enabled) {
- timers_state.cpu_ticks_offset += cpu_get_real_ticks();
+ timers_state.cpu_ticks_offset += cpu_get_host_ticks();
timers_state.cpu_clock_offset = cpu_get_clock_locked();
timers_state.cpu_ticks_enabled = 0;
}
diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index 67881c7..9ff5796 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -848,7 +848,7 @@ static target_ulong h_xirr_x(PowerPCCPU *cpu,
sPAPRMachineState *spapr,
uint32_t xirr = icp_accept(ss);
args[0] = xirr;
- args[1] = cpu_get_real_ticks();
+ args[1] = cpu_get_host_ticks();
return H_SUCCESS;
}
diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
index b77e303..2c604ef 100644
--- a/hw/ppc/ppc.c
+++ b/hw/ppc/ppc.c
@@ -834,7 +834,7 @@ static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
static void timebase_pre_save(void *opaque)
{
PPCTimebase *tb = opaque;
- uint64_t ticks = cpu_get_real_ticks();
+ uint64_t ticks = cpu_get_host_ticks();
PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu);
if (!first_ppc_cpu->env.tb_env) {
@@ -878,7 +878,7 @@ static int timebase_post_load(void *opaque, int version_id)
NANOSECONDS_PER_SECOND);
guest_tb = tb_remote->guest_timebase + MIN(0, migration_duration_tb);
- tb_off_adj = guest_tb - cpu_get_real_ticks();
+ tb_off_adj = guest_tb - cpu_get_host_ticks();
tb_off = first_ppc_cpu->env.tb_env->tb_offset;
trace_ppc_tb_adjust(tb_off, tb_off_adj, tb_off_adj - tb_off,
diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index 9939246..d0946cb 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -857,7 +857,7 @@ int64_t cpu_icount_to_ns(int64_t icount);
#if defined(_ARCH_PPC)
-static inline int64_t cpu_get_real_ticks(void)
+static inline int64_t cpu_get_host_ticks(void)
{
int64_t retval;
#ifdef _ARCH_PPC64
@@ -883,7 +883,7 @@ static inline int64_t cpu_get_real_ticks(void)
#elif defined(__i386__)
-static inline int64_t cpu_get_real_ticks(void)
+static inline int64_t cpu_get_host_ticks(void)
{
int64_t val;
asm volatile ("rdtsc" : "=A" (val));
@@ -892,7 +892,7 @@ static inline int64_t cpu_get_real_ticks(void)
#elif defined(__x86_64__)
-static inline int64_t cpu_get_real_ticks(void)
+static inline int64_t cpu_get_host_ticks(void)
{
uint32_t low,high;
int64_t val;
@@ -905,7 +905,7 @@ static inline int64_t cpu_get_real_ticks(void)
#elif defined(__hppa__)
-static inline int64_t cpu_get_real_ticks(void)
+static inline int64_t cpu_get_host_ticks(void)
{
int val;
asm volatile ("mfctl %%cr16, %0" : "=r"(val));
@@ -914,7 +914,7 @@ static inline int64_t cpu_get_real_ticks(void)
#elif defined(__ia64)
-static inline int64_t cpu_get_real_ticks(void)
+static inline int64_t cpu_get_host_ticks(void)
{
int64_t val;
asm volatile ("mov %0 = ar.itc" : "=r"(val) :: "memory");
@@ -923,7 +923,7 @@ static inline int64_t cpu_get_real_ticks(void)
#elif defined(__s390__)
-static inline int64_t cpu_get_real_ticks(void)
+static inline int64_t cpu_get_host_ticks(void)
{
int64_t val;
asm volatile("stck 0(%1)" : "=m" (val) : "a" (&val) : "cc");
@@ -932,7 +932,7 @@ static inline int64_t cpu_get_real_ticks(void)
#elif defined(__sparc__)
-static inline int64_t cpu_get_real_ticks (void)
+static inline int64_t cpu_get_host_ticks (void)
{
#if defined(_LP64)
uint64_t rval;
@@ -970,7 +970,7 @@ static inline int64_t cpu_get_real_ticks (void)
: "=r" (value)); \
}
-static inline int64_t cpu_get_real_ticks(void)
+static inline int64_t cpu_get_host_ticks(void)
{
/* On kernels >= 2.6.25 rdhwr <reg>, $2 and $3 are emulated */
uint32_t count;
@@ -986,7 +986,7 @@ static inline int64_t cpu_get_real_ticks(void)
#elif defined(__alpha__)
-static inline int64_t cpu_get_real_ticks(void)
+static inline int64_t cpu_get_host_ticks(void)
{
uint64_t cc;
uint32_t cur, ofs;
@@ -1001,7 +1001,7 @@ static inline int64_t cpu_get_real_ticks(void)
/* The host CPU doesn't have an easily accessible cycle counter.
Just return a monotonically increasing value. This will be
totally wrong, but hopefully better than nothing. */
-static inline int64_t cpu_get_real_ticks (void)
+static inline int64_t cpu_get_host_ticks (void)
{
static int64_t ticks = 0;
return ticks++;
diff --git a/linux-user/main.c b/linux-user/main.c
index 1f60ff2..d6af7ca 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -215,7 +215,7 @@ void cpu_list_unlock(void)
uint64_t cpu_get_tsc(CPUX86State *env)
{
- return cpu_get_real_ticks();
+ return cpu_get_host_ticks();
}
static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
@@ -1425,7 +1425,7 @@ void cpu_loop (CPUSPARCState *env)
#ifdef TARGET_PPC
static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env)
{
- return cpu_get_real_ticks();
+ return cpu_get_host_ticks();
}
uint64_t cpu_ppc_load_tbl(CPUPPCState *env)
diff --git a/target-alpha/sys_helper.c b/target-alpha/sys_helper.c
index 1f0e1a9..75c96c1 100644
--- a/target-alpha/sys_helper.c
+++ b/target-alpha/sys_helper.c
@@ -34,7 +34,7 @@ uint64_t helper_load_pcc(CPUAlphaState *env)
#else
/* In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist. Just pass through the
host cpu
clock ticks. Also, don't bother taking PCC_OFS into account. */
- return (uint32_t)cpu_get_real_ticks();
+ return (uint32_t)cpu_get_host_ticks();
#endif
}
--
2.1.4
