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| author | Mateusz Guzik <mjg@FreeBSD.org> | 2020-11-19 04:27:51 +0000 |
|---|---|---|
| committer | Mateusz Guzik <mjg@FreeBSD.org> | 2020-11-19 04:27:51 +0000 |
| commit | c48f897bbe0c6e7909db6d8b80c7b97f0631c3ca (patch) | |
| tree | b2fd168dc9a2d49a015b036755b5e7183ecb6775 /sys/kern | |
| parent | 431fb8abd7946ccb6710b41337ba8476fea448f2 (diff) | |
| download | src-c48f897bbe0c6e7909db6d8b80c7b97f0631c3ca.tar.gz src-c48f897bbe0c6e7909db6d8b80c7b97f0631c3ca.zip | |
smp: fix smp_rendezvous_cpus_retry usage before smp starts
Since none of the other CPUs are running there is nobody to clear their
entries and the routine spins indefinitely.
Notes
Notes:
svn path=/head/; revision=367829
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/subr_smp.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sys/kern/subr_smp.c b/sys/kern/subr_smp.c index 9da7ea869f86..093622d8f6aa 100644 --- a/sys/kern/subr_smp.c +++ b/sys/kern/subr_smp.c @@ -896,6 +896,21 @@ smp_rendezvous_cpus_retry(cpuset_t map, int cpu; /* + * Only one CPU to execute on. + */ + if (!smp_started) { + spinlock_enter(); + if (setup_func != NULL) + setup_func(arg); + if (action_func != NULL) + action_func(arg); + if (teardown_func != NULL) + teardown_func(arg); + spinlock_exit(); + return; + } + + /* * Execute an action on all specified CPUs while retrying until they * all acknowledge completion. */ |