RFC sched: Display deadline bandwidth and other SCHED_DEBUG clean up
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- v2 RFC Latest3 patches 3 repliesIn review
- v1 RFC4 patches 6 repliesSuperseded
Changes in v2 from the cover letter
o Added the bandwith to /proc/sched_debug instead of creating a new file.
o Removed patch: sched: Move sched_domain_debug into debug.c As it was decided that debug.c shouldn't have domain debugging.
Patches in v2 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | sched: Move sched_feature file setup into debug.ckernel/ kernel/ | +131 | 0 replies | |
| 2/3 | sched: Move sched_domain_sysctl to debug.ckernel/ kernel/ kernel/ | +186 | 0 replies | |
| 3/3 | sched: Add bandwidth ratio to /proc/sched_debugkernel/ | +9 | 2 replies |
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Cover letter [RFC][PATCH 0/3 v2] sched: Display deadline bandwidth and other SCHED_DEBUG clean up
I'm starting to play with SCHED_DEADLINE a bit and I'm able to cause a bandwidth "leak". Then I realized there's no way to examine what bandwidths are enabled on which CPUs. I added the bandwith ratios to the /proc/sched_debug file.
I will be posting the SCHED_DEADLINE issue in a separate thread.
# grep dl /proc/sched_debug dl_rq[0]: .dl_nr_running : 0 .dl_bw->bw : 996147 .dl_bw->total_bw : 0 dl_rq[1]: .dl_nr_running : 0 .dl_bw->bw : 996147 .dl_bw->total_bw : 104857 dl_rq[2]: .dl_nr_running : 0 .dl_bw->bw : 996147 .dl_bw->total_bw : 0 dl_rq[3]: .dl_nr_running : 0 .dl_bw->bw : 996147 .dl_bw->total_bw : 0 dl_rq[4]: .dl_nr_running : 0 .dl_bw->bw : 996147 .dl_bw->total_bw : 0 dl_rq[5]: .dl_nr_running : 0 .dl_bw->bw : 996147 .dl_bw->total_bw : 0 dl_rq[6]: .dl_nr_running : 0 .dl_bw->bw : 996147 .dl_bw->total_bw : 0 dl_rq[7]: .dl_nr_running : 0 .dl_bw->bw : 996147 .dl_bw->total_bw : 0
Before adding this code, I also realized there was a bit of SCHED_DEBUG code in the kernel/sched/core.c file, and decided to move that to kernel/sched/debug.c to clean the core.c file up a bit. Those patches are mostly orthognal to the deadline_bw file, but decided to group them together here.
Changes since v1:
o Added the bandwith to /proc/sched_debug instead of creating a new file.
o Removed patch: sched: Move sched_domain_debug into debug.c As it was decided that debug.c shouldn't have domain debugging.
Steven Rostedt (Red Hat) (3):
sched: Move sched_feature file setup into debug.c
sched: Move sched_domain_sysctl to debug.c
sched: Add bandwidth ratio to /proc/sched_debug
----
kernel/sched/core.c | 311 -------------------------------------------------- kernel/sched/debug.c | 313 +++++++++++++++++++++++++++++++++++++++++++++++++++ kernel/sched/sched.h | 13 +++ 3 files changed, 326 insertions(+), 311 deletions(-)