diff options
| author | mv143129 <none@none> | 2008-01-07 18:49:45 -0800 |
|---|---|---|
| committer | mv143129 <none@none> | 2008-01-07 18:49:45 -0800 |
| commit | 2850d85b7b93f31e578520dc3b3feb24db609c62 (patch) | |
| tree | 2a1994e9e8b17b58b251e608de8c1a449291ba8f /usr/src/uts/common/sys/thread.h | |
| parent | ca29f3da510ba7f712a40977b04aeceda9b70b95 (diff) | |
| download | illumos-joyent-2850d85b7b93f31e578520dc3b3feb24db609c62.tar.gz | |
6619224 Tick accounting needs to be made scalable
Diffstat (limited to 'usr/src/uts/common/sys/thread.h')
| -rw-r--r-- | usr/src/uts/common/sys/thread.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/usr/src/uts/common/sys/thread.h b/usr/src/uts/common/sys/thread.h index d545e093b3..7302289ea1 100644 --- a/usr/src/uts/common/sys/thread.h +++ b/usr/src/uts/common/sys/thread.h @@ -20,7 +20,7 @@ */ /* - * Copyright 2007 Sun Microsystems, Inc. All rights reserved. + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ @@ -515,10 +515,22 @@ extern struct _kthread t0; /* the scheduler thread */ extern kmutex_t pidlock; /* global process lock */ /* - * thread_free_lock is used by the clock thread to keep a thread + * thread_free_lock is used by the tick accounting thread to keep a thread * from being freed while it is being examined. */ -extern kmutex_t thread_free_lock; +#define THREAD_FREE_NUM 1024 +#define THREAD_FREE_MASK (THREAD_FREE_NUM - 1) +#define THREAD_FREE_SHIFT_BITS 5 +#define THREAD_FREE_SHIFT(t) ((uintptr_t)t >> THREAD_FREE_SHIFT_BITS) +#define THREAD_FREE_HASH(t) (THREAD_FREE_SHIFT(t) & THREAD_FREE_MASK) + +typedef struct thread_free_lock { + kmutex_t tf_lock; + uchar_t tf_pad[64 - sizeof (kmutex_t)]; +} thread_free_lock_t; + +extern void thread_free_prevent(kthread_t *); +extern void thread_free_allow(kthread_t *); /* * Routines to change the priority and effective priority |