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[Sample Profile] make page size configurable for ProfiledBinary #164773

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[Sample Profile] make page size configurable for ProfiledBinary #164773

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7 changes: 6 additions & 1 deletion llvm/tools/llvm-profgen/ProfiledBinary.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,11 @@ static cl::opt<bool>
cl::desc("Generate the profile for Linux kernel binary."),
cl::cat(ProfGenCategory));

static cl::opt<uint64_t>
Pagesize("page-size",
cl::desc("page size"), cl::init(0x1000),
cl::desc("target system pagee size."));

namespace sampleprof {

static const Target *getTarget(const ObjectFile *Obj) {
Expand Down Expand Up @@ -330,7 +335,7 @@ void ProfiledBinary::setPreferredTextSegmentAddresses(const ELFFile<ELFT> &Obj,
// However such info isn't available at post-processing time, assuming
// 4K page now. Note that we don't use EXEC_PAGESIZE from <linux/param.h>
// because we may build the tools on non-linux.
uint64_t PageSize = 0x1000;
uint64_t PageSize = Pagesize;
for (const typename ELFT::Phdr &Phdr : PhdrRange) {
if (Phdr.p_type == ELF::PT_LOAD) {
if (!FirstLoadableAddress)
Expand Down