| Main Device Driver Logging khttpd NUMA PCI Hotplug PPC32 SCTP Security Modules Sound Token Ring USAGI USB |
|
| Break global IPC locks | |
|
|
|
|
|
|
|
Description: Currently the use of three type of IPC resources (semaphores, message queues and shared memory segments) are synchronized by three global locks respectively. This means, for example, all semaphores are going to share one global lock. Although the IPC locks are not highly used as the BKL, on some applications which use lots of IPC resources (e.g. IPC semaphores), there could be contention. It makes more sense to me if we break the one global lock for all semaphores into one lock per sempahore id (same for message queue id/shared memory id). Patch should also avaliable at lse website. |
|
|
|
| Developer: Mingming Cao |
|
|
|
|
| Status: Available from IBM |
|
|
|
|
|
|
|
||
|
|
||
|
|
||
| Release | Notes | Date | Files |
|---|---|---|---|
| 20020711 | Release Notes | 2002-07-11 | |
| File Notes | ipclock.patch.gz |