[PATCH 0/2] Make the TSC safe to be used by gettimeofday().

I've had a proof-of-concept for this since August, and finally got around to
somewhat cleaning it up.

It can certainly still be improved, namely by using vgetcpu() instead of CPUID
to find the cpu number (but I couldn't get it to work, when I tried).
Another possible improvement would be to use RDTSCP when available.
There's also a small race in do_gettimeofday(), vgettimeofday() and
vmonotonic_clock() but I've never seen it happen.

Suggestions are welcome.

-- Suleiman


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Follow-Ups:
- [PATCH 1/2] Make the TSC safe to be used by gettimeofday().
  - From: Suleiman Souhlal <[email protected]>
- [PATCH 2/2] Introduce a vmonotonic_clock() vsyscall.
  - From: Suleiman Souhlal <[email protected]>
- Re: [PATCH 0/2] Make the TSC safe to be used by gettimeofday().
  - From: Andi Kleen <[email protected]>

Prev by Date: Re: [PATCH] Apple Motion Sensor driver
Next by Date: Re: [PATCH 0/2] Make the TSC safe to be used by gettimeofday().
Previous by thread: security: introduce file caps
Next by thread: Re: [PATCH 0/2] Make the TSC safe to be used by gettimeofday().
Index(es):
- Date
- Thread

[Index of Archives] [Kernel Newbies] [Netfilter] [Bugtraq] [Photo] [Stuff] [Gimp] [Yosemite News] [MIPS Linux] [ARM Linux] [Linux Security] [Linux RAID] [Video 4 Linux] [Linux for the blind] [Linux Resources]