#include #include #include "tsc.h" u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc) { u64 t, quot, rem; t = ns - tc->time_zero; quot = t / tc->time_mult; rem = t % tc->time_mult; return (quot << tc->time_shift) + (rem << tc->time_shift) / tc->time_mult; } u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc) { u64 quot, rem; quot = cyc >> tc->time_shift; rem = cyc & (((u64)1 << tc->time_shift) - 1); return tc->time_zero + quot * tc->time_mult + ((rem * tc->time_mult) >> tc->time_shift); } u64 __weak rdtsc(void) { return 0; } it Git repository'/>
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-02 12:34:27 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-02 12:34:27 -0800
commitf2557779e1a9cfbf69c99b74da26cc1b2b10e752 (patch)
tree8ddca65c897199add553948c429072b8bd463692 /drivers/usb/host/whci
parent6d04dfc8966019b8b0977b2cb942351f13d2b178 (diff)
parent030305d69fc6963c16003f50d7e8d74b02d0a143 (diff)
Merge tag 'pci-v4.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas: "Configure ASPM on the link from a PCI-to-PCIe bridge (avoids a NULL pointer dereference on topologies including these bridges)" * tag 'pci-v4.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
Diffstat (limited to 'drivers/usb/host/whci')