| commit | 8652cb4b0d87accbe78725fd2a13be2787059649 | |
| author | Prarit Bhargava <prarit@redhat.com> | |
| Wed, 12 Nov 2008 18:35:00 +0000 (12 13:35 -0500) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Wed, 12 Nov 2008 18:57:35 +0000 (12 19:57 +0100) | ||
| tree | 201f712a14998d01aca56ae8ed0d683423f47bdd | treesnapshot (tar.gz zip) |
| parent | 6cf87efbc7a3676e0ad7c9622ec6aec244a593bc | commitdiff |
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>
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>
| arch/x86/kernel/time_64.c | diffblobblamehistory |