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Calculate size of kernel code sections.

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Bartosz Taudul 2024-05-25 16:27:13 +02:00
parent 64aad9e751
commit 82aecbdb31
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GPG Key ID: B7FE2008B7575DF3
1 changed files with 22 additions and 6 deletions
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28
public/client/TracyCallstack.cpp
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@ -784,6 +784,7 @@ static FastVector<DebugInfo>* s_di_known;
struct KernelSymbol struct KernelSymbol
{ {
uint64_t addr; uint64_t addr;
uint32_t size;
const char* name; const char* name;
const char* mod; const char* mod;
}; };
@ -799,6 +800,7 @@ static void InitKernelSymbols()
size_t linelen = 16 * 1024; // linelen must be big enough to prevent reallocs in getline() size_t linelen = 16 * 1024; // linelen must be big enough to prevent reallocs in getline()
auto linebuf = (char*)tracy_malloc( linelen ); auto linebuf = (char*)tracy_malloc( linelen );
ssize_t sz; ssize_t sz;
size_t validCnt = 0;
while( ( sz = getline( &linebuf, &linelen, f ) ) != -1 ) while( ( sz = getline( &linebuf, &linelen, f ) ) != -1 )
{ {
auto ptr = linebuf; auto ptr = linebuf;
@ -851,6 +853,8 @@ static void InitKernelSymbols()
if( valid ) if( valid )
{ {
validCnt++;
strname = (char*)tracy_malloc_fast( nameend - namestart + 1 ); strname = (char*)tracy_malloc_fast( nameend - namestart + 1 );
memcpy( strname, namestart, nameend - namestart ); memcpy( strname, namestart, nameend - namestart );
strname[nameend-namestart] = '\0'; strname[nameend-namestart] = '\0';
@ -865,6 +869,7 @@ static void InitKernelSymbols()
auto sym = tmpSym.push_next(); auto sym = tmpSym.push_next();
sym->addr = addr; sym->addr = addr;
sym->size = 0;
sym->name = strname; sym->name = strname;
sym->mod = strmod; sym->mod = strmod;
} }
@ -872,11 +877,22 @@ static void InitKernelSymbols()
fclose( f ); fclose( f );
if( tmpSym.empty() ) return; if( tmpSym.empty() ) return;
std::sort( tmpSym.begin(), tmpSym.end(), []( const KernelSymbol& lhs, const KernelSymbol& rhs ) { return lhs.addr > rhs.addr; } ); std::sort( tmpSym.begin(), tmpSym.end(), []( const KernelSymbol& lhs, const KernelSymbol& rhs ) { return lhs.addr < rhs.addr; } );
s_kernelSymCnt = tmpSym.size(); for( size_t i=0; i<tmpSym.size()-1; i++ )
s_kernelSym = (KernelSymbol*)tracy_malloc_fast( sizeof( KernelSymbol ) * s_kernelSymCnt ); {
memcpy( s_kernelSym, tmpSym.data(), sizeof( KernelSymbol ) * s_kernelSymCnt ); if( tmpSym[i].name ) tmpSym[i].size = tmpSym[i+1].addr - tmpSym[i].addr;
TracyDebug( "Loaded %zu kernel symbols\n", s_kernelSymCnt ); }
s_kernelSymCnt = validCnt;
s_kernelSym = (KernelSymbol*)tracy_malloc_fast( sizeof( KernelSymbol ) * validCnt );
auto dst = s_kernelSym;
for( auto& v : tmpSym )
{
if( v.name ) *dst++ = v;
}
assert( dst == s_kernelSym + validCnt );
TracyDebug( "Loaded %zu kernel symbols (%zu code sections)\n", tmpSym.size(), validCnt );
} }
#endif #endif
@ -1277,7 +1293,7 @@ CallstackEntryData DecodeCallstackPtr( uint64_t ptr )
#ifdef __linux #ifdef __linux
else if( s_kernelSym ) else if( s_kernelSym )
{ {
auto it = std::lower_bound( s_kernelSym, s_kernelSym + s_kernelSymCnt, ptr, []( const KernelSymbol& lhs, const uint64_t& rhs ) { return lhs.addr > rhs; } ); auto it = std::lower_bound( s_kernelSym, s_kernelSym + s_kernelSymCnt, ptr, []( const KernelSymbol& lhs, const uint64_t& rhs ) { return lhs.addr + lhs.size < rhs; } );
if( it != s_kernelSym + s_kernelSymCnt ) if( it != s_kernelSym + s_kernelSymCnt )
{ {
cb_data[0].name = CopyStringFast( it->name ); cb_data[0].name = CopyStringFast( it->name );