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Removed unnecessary system call.

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XMRig 2021-04-24 23:22:10 +07:00
parent 259c165e60
commit e26fbc96e9
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GPG key ID: 446A53638BE94409
1 changed files with 25 additions and 11 deletions
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36
src/hw/msr/Msr_linux.cpp
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@ -29,6 +29,7 @@
#include <cstdio> #include <cstdio>
#include <dirent.h> #include <dirent.h>
#include <fcntl.h> #include <fcntl.h>
#include <fstream>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/types.h> #include <sys/types.h>
#include <unistd.h> #include <unistd.h>
@ -48,7 +49,27 @@ static int msr_open(int32_t cpu, int flags)
class MsrPrivate class MsrPrivate
{ {
public: public:
bool available = true; inline MsrPrivate() : m_available(msr_allow_writes() || msr_modprobe()) {}
inline bool isAvailable() const { return m_available; }
private:
inline bool msr_allow_writes()
{
std::ofstream file("/sys/module/msr/parameters/allow_writes", std::ios::out | std::ios::binary | std::ios::trunc);
if (file.is_open()) {
file << "on";
}
return file.good();
}
inline bool msr_modprobe()
{
return system("/sbin/modprobe msr allow_writes=on > /dev/null 2>&1") == 0;
}
const bool m_available;
}; };
@ -57,15 +78,8 @@ public:
xmrig::Msr::Msr() : d_ptr(new MsrPrivate()) xmrig::Msr::Msr() : d_ptr(new MsrPrivate())
{ {
if(access("/sys/module/msr/parameters/allow_writes", F_OK) == 0) { if (!isAvailable()) {
if(system("echo on > /sys/module/msr/parameters/allow_writes") != 0) { LOG_WARN("%s " YELLOW_BOLD("msr kernel module is not available"), tag());
d_ptr->available = false;
}
}
else if (system("/sbin/modprobe msr allow_writes=on > /dev/null 2>&1") != 0) {
LOG_WARN("%s " YELLOW_BOLD("msr kernel module is not available"), Msr::tag());
d_ptr->available = false;
} }
} }
@ -78,7 +92,7 @@ xmrig::Msr::~Msr()
bool xmrig::Msr::isAvailable() const bool xmrig::Msr::isAvailable() const
{ {
return d_ptr->available; return d_ptr->isAvailable();
} }