Messages in this thread Patch in this message | | | From | "Jiangong.Han" <> | Subject | [PATCH] rcu-scale: rcu-scale returns one less than the real number of gps in the dmesg report. | Date | Tue, 22 Jun 2021 18:37:08 +0800 |
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The dmesg report on rcu-scale shows there are N grace periods, and gps are listed from 0 to N. This commit make writer_n_durations stores the counts of gps, and shows there are N+1 gps, change the listed gps index begin from 0 to N.
From [ 8306.087880] rcu-scale: writer 0 gps: 133 ...... [ 8307.864630] rcu-scale: 0 writer-duration: 0 44003961 [ 8307.935711] rcu-scale: 0 writer-duration: 1 32003582 ...... [ 8316.472860] rcu-scale: 0 writer-duration: 132 28004391 [ 8316.538498] rcu-scale: 0 writer-duration: 133 27996410
to [ 8306.087880] rcu-scale: writer 0 gps: 134 ...... [ 8307.864630] rcu-scale: 0 writer-duration: 0 44003961 [ 8307.935711] rcu-scale: 0 writer-duration: 1 32003582 ...... [ 8316.472860] rcu-scale: 0 writer-duration: 132 28004391 [ 8316.538498] rcu-scale: 0 writer-duration: 133 27996410
Signed-off-by: Jiangong.Han <jiangong.han@windriver.com> --- kernel/rcu/rcuscale.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c index dca51fe9c73f..2cc34a22a506 100644 --- a/kernel/rcu/rcuscale.c +++ b/kernel/rcu/rcuscale.c @@ -487,7 +487,7 @@ rcu_scale_writer(void *arg) if (gp_async) { cur_ops->gp_barrier(); } - writer_n_durations[me] = i_max; + writer_n_durations[me] = i_max + 1; torture_kthread_stopping("rcu_scale_writer"); return 0; } @@ -561,7 +561,7 @@ rcu_scale_cleanup(void) wdpp = writer_durations[i]; if (!wdpp) continue; - for (j = 0; j <= writer_n_durations[i]; j++) { + for (j = 0; j < writer_n_durations[i]; j++) { wdp = &wdpp[j]; pr_alert("%s%s %4d writer-duration: %5d %llu\n", scale_type, SCALE_FLAG, -- 2.17.1
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