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Allow finding tracefs through debugfs as a fallback for older kernels/systems that only mount debugfs

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This commit is contained in:
Clément Grégoire
2026-04-20 15:04:33 +02:00
parent 0a5647b20f
commit 8816dd0557
1 changed files with 15 additions and 1 deletions
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16
public/client/TracySysTrace.cpp
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@@ -566,11 +566,25 @@ static char* GetTraceFsPath()
if( strcmp( ent->mnt_type, "tracefs" ) == 0 )
{
auto len = strlen( ent->mnt_dir );
ret = (char*)tracy_malloc( len + 1 );
// ret may be != nullptr if we already saw a debugfs entry
ret = (char*)tracy_realloc( ret, len + 1 );
memcpy( ret, ent->mnt_dir, len );
ret[len] = '\0';
break;
}
else if( strcmp( ent->mnt_type, "debugfs" ) == 0 )
{
const char* tracingDirName = "tracing";
const size_t tracingDirNameLen = strlen( tracingDirName );
auto debugFsPathLen = strlen( ent->mnt_dir );
// Typically there should be at most one debugfs, entry, but still possible to have multiple? hence realloc
ret = (char*)tracy_realloc( ret, debugFsPathLen + 1 + tracingDirNameLen + 1 );
memcpy( ret, ent->mnt_dir, debugFsPathLen );
ret[debugFsPathLen] = '/';
memcpy( ret + debugFsPathLen + 1, tracingDirName, tracingDirNameLen );
ret[debugFsPathLen + 1 + tracingDirNameLen] = '\0';
// Don't break to allow for tracefs to be found later as it is the preferred path
}
}
endmntent( f );
return ret;