diff options
Diffstat (limited to 'Documentation/RCU/trace.txt')
-rw-r--r-- | Documentation/RCU/trace.txt | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/Documentation/RCU/trace.txt b/Documentation/RCU/trace.txt index f3778f8952da..910870b15acd 100644 --- a/Documentation/RCU/trace.txt +++ b/Documentation/RCU/trace.txt | |||
@@ -396,14 +396,14 @@ o Each element of the form "3/3 ..>. 0:7 ^0" represents one rcu_node | |||
396 | 396 | ||
397 | The output of "cat rcu/rcu_sched/rcu_pending" looks as follows: | 397 | The output of "cat rcu/rcu_sched/rcu_pending" looks as follows: |
398 | 398 | ||
399 | 0!np=26111 qsp=29 rpq=5386 cbr=1 cng=570 gpc=3674 gps=577 nn=15903 | 399 | 0!np=26111 qsp=29 rpq=5386 cbr=1 cng=570 gpc=3674 gps=577 nn=15903 ndw=0 |
400 | 1!np=28913 qsp=35 rpq=6097 cbr=1 cng=448 gpc=3700 gps=554 nn=18113 | 400 | 1!np=28913 qsp=35 rpq=6097 cbr=1 cng=448 gpc=3700 gps=554 nn=18113 ndw=0 |
401 | 2!np=32740 qsp=37 rpq=6202 cbr=0 cng=476 gpc=4627 gps=546 nn=20889 | 401 | 2!np=32740 qsp=37 rpq=6202 cbr=0 cng=476 gpc=4627 gps=546 nn=20889 ndw=0 |
402 | 3 np=23679 qsp=22 rpq=5044 cbr=1 cng=415 gpc=3403 gps=347 nn=14469 | 402 | 3 np=23679 qsp=22 rpq=5044 cbr=1 cng=415 gpc=3403 gps=347 nn=14469 ndw=0 |
403 | 4!np=30714 qsp=4 rpq=5574 cbr=0 cng=528 gpc=3931 gps=639 nn=20042 | 403 | 4!np=30714 qsp=4 rpq=5574 cbr=0 cng=528 gpc=3931 gps=639 nn=20042 ndw=0 |
404 | 5 np=28910 qsp=2 rpq=5246 cbr=0 cng=428 gpc=4105 gps=709 nn=18422 | 404 | 5 np=28910 qsp=2 rpq=5246 cbr=0 cng=428 gpc=4105 gps=709 nn=18422 ndw=0 |
405 | 6!np=38648 qsp=5 rpq=7076 cbr=0 cng=840 gpc=4072 gps=961 nn=25699 | 405 | 6!np=38648 qsp=5 rpq=7076 cbr=0 cng=840 gpc=4072 gps=961 nn=25699 ndw=0 |
406 | 7 np=37275 qsp=2 rpq=6873 cbr=0 cng=868 gpc=3416 gps=971 nn=25147 | 406 | 7 np=37275 qsp=2 rpq=6873 cbr=0 cng=868 gpc=3416 gps=971 nn=25147 ndw=0 |
407 | 407 | ||
408 | The fields are as follows: | 408 | The fields are as follows: |
409 | 409 | ||
@@ -432,6 +432,10 @@ o "gpc" is the number of times that an old grace period had | |||
432 | o "gps" is the number of times that a new grace period had started, | 432 | o "gps" is the number of times that a new grace period had started, |
433 | but this CPU was not yet aware of it. | 433 | but this CPU was not yet aware of it. |
434 | 434 | ||
435 | o "ndw" is the number of times that a wakeup of an rcuo | ||
436 | callback-offload kthread had to be deferred in order to avoid | ||
437 | deadlock. | ||
438 | |||
435 | o "nn" is the number of times that this CPU needed nothing. | 439 | o "nn" is the number of times that this CPU needed nothing. |
436 | 440 | ||
437 | 441 | ||
@@ -443,7 +447,7 @@ The output of "cat rcu/rcuboost" looks as follows: | |||
443 | balk: nt=0 egt=6541 bt=0 nb=0 ny=126 nos=0 | 447 | balk: nt=0 egt=6541 bt=0 nb=0 ny=126 nos=0 |
444 | 448 | ||
445 | This information is output only for rcu_preempt. Each two-line entry | 449 | This information is output only for rcu_preempt. Each two-line entry |
446 | corresponds to a leaf rcu_node strcuture. The fields are as follows: | 450 | corresponds to a leaf rcu_node structure. The fields are as follows: |
447 | 451 | ||
448 | o "n:m" is the CPU-number range for the corresponding two-line | 452 | o "n:m" is the CPU-number range for the corresponding two-line |
449 | entry. In the sample output above, the first entry covers | 453 | entry. In the sample output above, the first entry covers |