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Introduce mutex for MAC scheduler

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Different threads (e.g., RRC, DU tasks) might access the scheduler at
the same time as the thread that drivers the scheduler itself
(ru_thread). To avoid data races, introduce this mutex.

Most functions of the scheduler are only used internally and have been
marked static in the previous commit. The remaining ones, in this
commit, either lock the scheduler mutex sched_lock, or a comment has
been added of the assumption of how such function is to be locked (e.g.,
if it might be called from different places, or if it is called by a
function that already locks the scheduler).
This commit is contained in:
Robert Schmidt
2023-05-03 13:40:22 +02:00
parent 44bf62758a
commit 31a1003349
14 changed files with 225 additions and 56 deletions
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openair2/RRC/NR/L2_nr_interface.c
+6 -1
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@@ -55,12 +55,17 @@ void nr_rrc_mac_remove_ue(rnti_t rntiMaybeUEid)
nr_rlc_remove_ue(rntiMaybeUEid);
gNB_MAC_INST *nrmac = RC.nrmac[0];
NR_SCHED_LOCK(&nrmac->sched_lock);
mac_remove_nr_ue(nrmac, rntiMaybeUEid);
NR_SCHED_UNLOCK(&nrmac->sched_lock);
}
void nr_rrc_mac_update_cellgroup(rnti_t rntiMaybeUEid, NR_CellGroupConfig_t *cgc)
{
nr_mac_update_cellgroup(RC.nrmac[0], rntiMaybeUEid, cgc);
gNB_MAC_INST *nrmac = RC.nrmac[0];
NR_SCHED_LOCK(&nrmac->sched_lock);
nr_mac_update_cellgroup(nrmac, rntiMaybeUEid, cgc);
NR_SCHED_UNLOCK(&nrmac->sched_lock);
}
uint16_t mac_rrc_nr_data_req(const module_id_t Mod_idP,