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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-01-06 22:04:22 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-01-23 11:37:14 -0800 |
| commit | bb4e2c08bbfa8eb032db7814f6100086aac102d3 (patch) | |
| tree | 9f5f9cf8d14f4fb6e70dc72061d6c793032b3625 /Documentation/RCU | |
| parent | d78973c32a210b0057b51880f7119bf2b61d5a65 (diff) | |
| download | linux-bb4e2c08bbfa8eb032db7814f6100086aac102d3.tar.gz linux-bb4e2c08bbfa8eb032db7814f6100086aac102d3.tar.bz2 linux-bb4e2c08bbfa8eb032db7814f6100086aac102d3.zip | |
rcu: Eliminate unused expedited_normal counter
Expedited grace periods no longer fall back to normal grace periods
in response to lock contention, given that expedited grace periods
now use the rcu_node tree so as to avoid contention. This commit
therfore removes the expedited_normal counter.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'Documentation/RCU')
| -rw-r--r-- | Documentation/RCU/trace.txt | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/Documentation/RCU/trace.txt b/Documentation/RCU/trace.txt index 00a3a38b375a..6549012033f9 100644 --- a/Documentation/RCU/trace.txt +++ b/Documentation/RCU/trace.txt @@ -237,7 +237,7 @@ o "ktl" is the low-order 16 bits (in hexadecimal) of the count of The output of "cat rcu/rcu_preempt/rcuexp" looks as follows: -s=21872 wd1=0 wd2=0 wd3=5 n=0 enq=0 sc=21872 +s=21872 wd1=0 wd2=0 wd3=5 enq=0 sc=21872 These fields are as follows: @@ -249,9 +249,6 @@ o "wd1", "wd2", and "wd3" are the number of times that an attempt completed an expedited grace period that satisfies the attempted request. "Our work is done." -o "n" is number of times that a concurrent CPU-hotplug operation - forced a fallback to a normal grace period. - o "enq" is the number of quiescent states still outstanding. o "sc" is the number of times that the attempt to start a |