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| author | ups <ups@FreeBSD.org> | 2007-11-08 14:47:55 +0000 |
|---|---|---|
| committer | ups <ups@FreeBSD.org> | 2007-11-08 14:47:55 +0000 |
| commit | 9c75ede409d60f494cbb4b5c953e103ca672a0df (patch) | |
| tree | e657852bc96f8f77553f7abb0596889a6b8d5e00 /sys/kern/subr_pcpu.c | |
| parent | 6d7755ffed75007fcc52c6aa8ee3347a280b4706 (diff) | |
| download | FreeBSD-src-9c75ede409d60f494cbb4b5c953e103ca672a0df.zip FreeBSD-src-9c75ede409d60f494cbb4b5c953e103ca672a0df.tar.gz | |
Initial checkin for rmlock (read mostly lock) a multi reader single writer
lock optimized for almost exclusive reader access. (see also rmlock.9)
TODO:
Convert to per cpu variables linkerset as soon as it is available.
Optimize UP (single processor) case.
Diffstat (limited to 'sys/kern/subr_pcpu.c')
| -rw-r--r-- | sys/kern/subr_pcpu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/kern/subr_pcpu.c b/sys/kern/subr_pcpu.c index bf9b0c7..1109b31 100644 --- a/sys/kern/subr_pcpu.c +++ b/sys/kern/subr_pcpu.c @@ -56,7 +56,7 @@ __FBSDID("$FreeBSD$"); #include <sys/smp.h> #include <ddb/ddb.h> -static struct pcpu *cpuid_to_pcpu[MAXCPU]; +struct pcpu *cpuid_to_pcpu[MAXCPU]; struct cpuhead cpuhead = SLIST_HEAD_INITIALIZER(cpuhead); /* @@ -74,6 +74,9 @@ pcpu_init(struct pcpu *pcpu, int cpuid, size_t size) cpuid_to_pcpu[cpuid] = pcpu; SLIST_INSERT_HEAD(&cpuhead, pcpu, pc_allcpu); cpu_pcpu_init(pcpu, cpuid, size); + pcpu->pc_rm_queue.rmq_next = &pcpu->pc_rm_queue; + pcpu->pc_rm_queue.rmq_prev = &pcpu->pc_rm_queue; + } /* |
