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| author | kib <kib@FreeBSD.org> | 2012-05-30 16:06:38 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2012-05-30 16:06:38 +0000 |
| commit | 6f4e16f8338923e9fd89009ec9cb4a5a3d770983 (patch) | |
| tree | 4caf91c8f8e723003a46c63db3286a9280250541 /sys/kern/kern_thread.c | |
| parent | b4b050eda28e90a7c843fa7fa999ce50dd3c3872 (diff) | |
| download | FreeBSD-src-6f4e16f8338923e9fd89009ec9cb4a5a3d770983.zip FreeBSD-src-6f4e16f8338923e9fd89009ec9cb4a5a3d770983.tar.gz | |
Add a rangelock implementation, intended to be used to range-locking
the i/o regions of the vnode data space. The implementation is quite
simple-minded, it uses the list of the lock requests, ordered by
arrival time. Each request may be for read or for write. The
implementation is fair FIFO.
MFC after: 2 month
Diffstat (limited to 'sys/kern/kern_thread.c')
| -rw-r--r-- | sys/kern/kern_thread.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/kern/kern_thread.c b/sys/kern/kern_thread.c index 3fbe96f..69a416e 100644 --- a/sys/kern/kern_thread.c +++ b/sys/kern/kern_thread.c @@ -39,6 +39,7 @@ __FBSDID("$FreeBSD$"); #include <sys/lock.h> #include <sys/mutex.h> #include <sys/proc.h> +#include <sys/rangelock.h> #include <sys/resourcevar.h> #include <sys/sdt.h> #include <sys/smp.h> @@ -205,6 +206,7 @@ thread_init(void *mem, int size, int flags) td->td_sleepqueue = sleepq_alloc(); td->td_turnstile = turnstile_alloc(); + td->td_rlqe = NULL; EVENTHANDLER_INVOKE(thread_init, td); td->td_sched = (struct td_sched *)&td[1]; umtx_thread_init(td); @@ -222,6 +224,7 @@ thread_fini(void *mem, int size) td = (struct thread *)mem; EVENTHANDLER_INVOKE(thread_fini, td); + rlqentry_free(td->td_rlqe); turnstile_free(td->td_turnstile); sleepq_free(td->td_sleepqueue); umtx_thread_fini(td); |
