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rcu: Fix typo and add additional debug
This commit fixes a typo and adds some additional debugging to the message emitted when a task blocking the current grace period is listed as blocking it when either that grace period ends or the next grace period begins. This commit also reformats the console message for readability. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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c74859d1eb
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2 changed files with 9 additions and 2 deletions
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@ -2316,6 +2316,7 @@ static void rcu_report_unblock_qs_rnp(struct rcu_state *rsp,
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return; /* Still need more quiescent states! */
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}
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rnp->completedqs = rnp->gp_seq;
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rnp_p = rnp->parent;
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if (rnp_p == NULL) {
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/*
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@ -856,8 +856,14 @@ static void dump_blkd_tasks(struct rcu_node *rnp, int ncheck)
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struct list_head *lhp;
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raw_lockdep_assert_held_rcu_node(rnp);
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pr_info("%s: grp: %d-%d level: %d ->qamask %#lx ->gp_tasks %p ->boost_tasks %p ->exp_tasks %p &->blkd_tasks: %p offset: %u\n", __func__, rnp->grplo, rnp->grphi, rnp->level, rnp->qsmask, rnp->gp_tasks, rnp->boost_tasks, rnp->exp_tasks, &rnp->blkd_tasks, (unsigned int)offsetof(typeof(*rnp), blkd_tasks));
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pr_cont("\t->blkd_tasks");
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pr_info("%s: grp: %d-%d level: %d ->gp_seq %#lx ->completedqs %#lx\n",
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__func__, rnp->grplo, rnp->grphi, rnp->level,
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rnp->gp_seq, rnp->completedqs);
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pr_info("%s: ->qsmask %#lx ->qsmaskinit %#lx ->qsmaskinitnext %#lx\n",
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__func__, rnp->qsmask, rnp->qsmaskinit, rnp->qsmaskinitnext);
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pr_info("%s: ->gp_tasks %p ->boost_tasks %p ->exp_tasks %p\n",
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__func__, rnp->gp_tasks, rnp->boost_tasks, rnp->exp_tasks);
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pr_info("%s: ->blkd_tasks", __func__);
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i = 0;
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list_for_each(lhp, &rnp->blkd_tasks) {
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pr_cont(" %p", lhp);
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