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Monotonic clock fallback for systrace

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This commit is contained in:
Clément Grégoire
2026-02-02 15:21:52 +01:00
parent ca5ef812a3
commit 79cb60025d
1 changed files with 33 additions and 22 deletions
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55
public/client/TracySysTrace.cpp
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@@ -596,6 +596,11 @@ bool SysTraceStart( int64_t& samplingPeriod )
TracyDebug( "sched_waking id: %i", wakingId );
TracyDebug( "drm_vblank_event id: %i", vsyncId );
bool useMonotonicClockRaw = !HardwareSupportsInvariantTSC();
#if !defined TRACY_HW_TIMER || !( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
useMonotonicClockRaw = true;
#endif
#ifdef TRACY_NO_SAMPLING
const bool noSoftwareSampling = true;
#else
@@ -666,11 +671,12 @@ bool SysTraceStart( int64_t& samplingPeriod )
#endif
pe.disabled = 1;
pe.freq = 1;
pe.inherit = 1;
#if !defined TRACY_HW_TIMER || !( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
#endif
pe.inherit = 1;
if( useMonotonicClockRaw )
{
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
}
if( !noSoftwareSampling )
{
@@ -711,11 +717,12 @@ bool SysTraceStart( int64_t& samplingPeriod )
pe.exclude_guest = 1;
pe.exclude_hv = 1;
pe.freq = 1;
pe.inherit = 1;
#if !defined TRACY_HW_TIMER || !( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
#endif
pe.inherit = 1;
if( useMonotonicClockRaw )
{
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
}
if( !noRetirement )
{
@@ -838,10 +845,11 @@ bool SysTraceStart( int64_t& samplingPeriod )
pe.sample_type = PERF_SAMPLE_TIME | PERF_SAMPLE_RAW;
pe.disabled = 1;
pe.config = vsyncId;
#if !defined TRACY_HW_TIMER || !( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
#endif
if( useMonotonicClockRaw )
{
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
}
TracyDebug( "Setup vsync capture" );
for( int i=0; i<s_numCpus; i++ )
@@ -873,10 +881,12 @@ bool SysTraceStart( int64_t& samplingPeriod )
pe.disabled = 1;
pe.inherit = 1;
pe.config = switchId;
#if !defined TRACY_HW_TIMER || !( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
#endif
if( useMonotonicClockRaw )
{
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
}
TracyDebug( "Setup context switch capture" );
for( int i=0; i<s_numCpus; i++ )
@@ -906,10 +916,11 @@ bool SysTraceStart( int64_t& samplingPeriod )
pe.inherit = 1;
pe.config = wakingId;
pe.read_format = 0;
#if !defined TRACY_HW_TIMER || !( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
#endif
if( useMonotonicClockRaw )
{
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
}
TracyDebug( "Setup waking up capture" );
for( int i=0; i<s_numCpus; i++ )