From 2ef014608f49b6bc7e1753c50ddaf617c023fed5 Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <wolf@nereid.pl>
Date: Thu, 28 Apr 2022 23:50:13 +0200
Subject: [PATCH] Notify when software sampling setup has failed.

---
 client/TracySysTrace.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/client/TracySysTrace.cpp b/client/TracySysTrace.cpp
index 6c7d51b9..e1f81f97 100644
--- a/client/TracySysTrace.cpp
+++ b/client/TracySysTrace.cpp
@@ -859,7 +859,11 @@ bool SysTraceStart( int64_t& samplingPeriod )
             pe.exclude_kernel = 1;
             ProbePreciseIp( pe, currentPid );
             fd = perf_event_open( &pe, currentPid, i, -1, PERF_FLAG_FD_CLOEXEC );
-            if( fd == -1 ) break;
+            if( fd == -1 )
+            {
+                TracyDebug( "  Failed to setup!\n");
+                break;
+            }
             TracyDebug( "  No access to kernel samples\n" );
         }
         new( s_ring+s_numBuffers ) RingBuffer( 64*1024, fd, EventCallstack );