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| author | Tim Shen <timshen91@gmail.com> | 2017-02-10 20:30:43 +0000 |
|---|---|---|
| committer | Tim Shen <timshen91@gmail.com> | 2017-02-10 20:30:43 +0000 |
| commit | 324a908382143d80dae617cab136e3f303614ecb (patch) | |
| tree | 87fddeda987de2c73ce2e95ad06d2cc786f39586 /lib/xray/xray_x86_64.cc | |
| parent | fc4a9bfb5dfdb119894a2a34aff047d14dad0198 (diff) | |
[XRay] Refactor TSC related functions into a single header. NFC.
Summary:
The implementation, however, is in different arch-specific files, unless it's emulated.
Reviewers: dberris, pelikan, javed.absar
Subscribers: aemerson, llvm-commits
Differential Revision: https://reviews.llvm.org/D29796
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@294777 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/xray/xray_x86_64.cc')
| -rw-r--r-- | lib/xray/xray_x86_64.cc | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/lib/xray/xray_x86_64.cc b/lib/xray/xray_x86_64.cc index 25c64957c..dd56e4214 100644 --- a/lib/xray/xray_x86_64.cc +++ b/lib/xray/xray_x86_64.cc @@ -57,19 +57,19 @@ static bool readValueFromFile(const char *Filename, return Result; } -uint64_t cycleFrequency() XRAY_NEVER_INSTRUMENT { - long long CPUFrequency = -1; +uint64_t getTSCFrequency() XRAY_NEVER_INSTRUMENT { + long long TSCFrequency = -1; if (readValueFromFile("/sys/devices/system/cpu/cpu0/tsc_freq_khz", - &CPUFrequency)) { - CPUFrequency *= 1000; + &TSCFrequency)) { + TSCFrequency *= 1000; } else if (readValueFromFile( "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq", - &CPUFrequency)) { - CPUFrequency *= 1000; + &TSCFrequency)) { + TSCFrequency *= 1000; } else { Report("Unable to determine CPU frequency for TSC accounting.\n"); } - return CPUFrequency == -1 ? 0 : static_cast<uint64_t>(CPUFrequency); + return TSCFrequency == -1 ? 0 : static_cast<uint64_t>(TSCFrequency); } static constexpr uint8_t CallOpCode = 0xe8; |