Fix driver build for RHEL 7.7/4.13+ w/CONFIG_VIRT_CPU_ACCOUNTING_GEN #1471
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gnosek
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bryanseay
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| @@ -48,15 +49,26 @@ void ppm_task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t * | |||
| #endif | |||
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| #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN | |||
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| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 13, 0)) || (PPM_RHEL_RELEASE_CODE > 0 && PPM_RHEL_RELEASE_CODE >= PPM_RHEL_RELEASE_VERSION(7, 7)) | |||
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I added a comment to the PPM_* macros but I'm not sure what I can say here that isn't already expressed by the code. If we're building for >= 4.13 or for RHEL >= 7.7, use the new macros, otherwise use the old ones.
Kernel commits 60a9ce57e7c5ac1df3a39fb941022bbfa40c0862 and bac5b6b6b11560f323e71d0ebac4061cfe5f56c0 move the vtime_* fields from task_struct to a nested struct vtime. RHEL 7.7 is the first kernel where we hit this but the changes landed in upstream kernel 4.13. To hit this bug, CONFIG_VIRT_CPU_ACCOUNTING_GEN has to be set.
RHEL 8.1 backports the definition of access_ok from 5.0.
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Is there an ETA on a release with this fix included? We are running into this issue as well. Cheers, |
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Based off the release notes, it looks like this went into release tag 0.26.3. |
robbycochran
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robbycochran
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Sep 25, 2019
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Kernel commits 60a9ce57e7c5ac1df3a39fb941022bbfa40c0862
and bac5b6b6b11560f323e71d0ebac4061cfe5f56c0 move the vtime_* fields
from task_struct to a nested struct vtime.
RHEL 7.7 is the first kernel where we hit this but the changes landed
in upstream kernel 4.13.
To hit this bug, CONFIG_VIRT_CPU_ACCOUNTING_GEN has to be set.