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| author |   Prarit Bhargava <prarit@redhat.com> | 2008-11-12 13:35:00 -0500 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-11-12 19:57:35 +0100 |
| commit | 8652cb4b0d87accbe78725fd2a13be2787059649 (patch) | |
| tree | 201f712a14998d01aca56ae8ed0d683423f47bdd /lib/bug.c | |
| parent | x86 debug: mark early_printk.o as notrace (diff) | |
| download | wireguard-linux-8652cb4b0d87accbe78725fd2a13be2787059649.tar.xz wireguard-linux-8652cb4b0d87accbe78725fd2a13be2787059649.zip | |
x86: warn of incorrect cpu_khz on AMD systems
Impact: add debug check
If none of the perfctrs are free when calculating cpu_khz we default to
using ctr 3 (ie, we just choose 3). This may lead to an incorrect tsc
freq value which can cause the system to be unstable.
To aid in future debugging, WARN the user of a potential problem.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/bug.c')
0 files changed, 0 insertions, 0 deletions