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| author | Boris Ostrovsky <[email protected]> | 2017-09-11 18:51:11 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2017-09-25 13:22:45 +0000 |
| commit | ccb64941f375a6eb21b1b20136730eb7d1716068 (patch) | |
| tree | 7a2a352e6fb02667f4219438e7ea919a04a521da /tools/perf/scripts/python/netdev-times.py | |
| parent | x86/timers: Make recalibrate_cpu_khz() void (diff) | |
| download | kernel-ccb64941f375a6eb21b1b20136730eb7d1716068.tar.gz kernel-ccb64941f375a6eb21b1b20136730eb7d1716068.zip | |
x86/timers: Move simple_udelay_calibration() past kvmclock_init()
simple_udelay_calibration() relies on x86_platform's calibration ops.
For KVM these ops are set late in setup_arch() and so
simple_udelay_calibration() ends up using native version.
Besides being possibly incorrect, this significantly increases kernel
boot time. For example, on my laptop executing start_kernel() by a guest
takes ~10 times more than when KVM's ops are used.
Since early_xdbc_setup_hardware() relies on calibration having been
performed move it too.
Signed-off-by: Boris Ostrovsky <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
0 files changed, 0 insertions, 0 deletions