mirror of
https://github.com/torvalds/linux.git
synced 2024-09-28 19:03:08 +00:00
2aba73a614
safe (it just adds a volatile). I don't think it fixes an actual bug (the __getcpu calls in the pvclock code may not have been needed in the first place), but discussion on that point is ongoing. It also fixes a big performance issue in 3.18 and earlier in which the lsl instructions in vclock_gettime got hoisted so far up the function that they happened even when the function they were in was never called. n 3.19, the performance issue seems to be gone due to the whims of my compiler and some interaction with a branch that's now gone. I'll hopefully have a much bigger overhaul of the pvclock code for 3.20, but it needs careful review. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJUmduGAAoJEK9N98ZeDfrk874H/RkkP+y6/DmdKVR1dTOUQW4u f1wPU0/sc5xywGjNcfR3XwUuyBJyd3s81WVaE5XXHfCHnbjG2Z4CNTqga27hL1D0 io01Q2s3dh1Y5c0cccVmJmyw//YVzMUOzGTNM9R0NKQNXmYUz6jgQaqk+wWORdD6 JXCU3/LI5VT0fjNPLj1M9l59eC2Qg/V4GqY2xRJ1AfbwkX1CFZTcWUPb+4FScVYv 9gds/vOoFg54MypVJD4SeIC9I8U0qcim9gV7gGFdzyDNCXS5J4P+02sEOFNu8oYy HVK1B0LXhswT08Ho1yRxXUhFxpqEGeGJvTlDTvwy+r/yuKE2AVBtlhLQBqMPhnY= =u3d2 -----END PGP SIGNATURE----- Merge tag 'pr-20141223-x86-vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux into x86/urgent Pull VDSO fix from Andy Lutomirski: "This is hopefully the last vdso fix for 3.19. It should be very safe (it just adds a volatile). I don't think it fixes an actual bug (the __getcpu calls in the pvclock code may not have been needed in the first place), but discussion on that point is ongoing. It also fixes a big performance issue in 3.18 and earlier in which the lsl instructions in vclock_gettime got hoisted so far up the function that they happened even when the function they were in was never called. n 3.19, the performance issue seems to be gone due to the whims of my compiler and some interaction with a branch that's now gone. I'll hopefully have a much bigger overhaul of the pvclock code for 3.20, but it needs careful review." Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|---|---|---|
| .. | ||
| boot | ||
| configs | ||
| crypto | ||
| ia32 | ||
| include | ||
| kernel | ||
| kvm | ||
| lguest | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| oprofile | ||
| pci | ||
| platform | ||
| power | ||
| purgatory | ||
| realmode | ||
| syscalls | ||
| tools | ||
| um | ||
| vdso | ||
| video | ||
| xen | ||
| .gitignore | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.cpu | ||
| Kconfig.debug | ||
| Makefile | ||
| Makefile_32.cpu | ||
| Makefile.um | ||