diff options
| author | jasone <jasone@FreeBSD.org> | 2000-09-07 01:33:02 +0000 |
|---|---|---|
| committer | jasone <jasone@FreeBSD.org> | 2000-09-07 01:33:02 +0000 |
| commit | 769e0f974d8929599ba599ac496510fffc90ff34 (patch) | |
| tree | 9387522900085835de81e7830e570ef3f6b3ea80 /sys/alpha/include/cpu.h | |
| parent | acf1927de02afda4855ec278b1128fd9446405ea (diff) | |
| download | FreeBSD-src-769e0f974d8929599ba599ac496510fffc90ff34.zip FreeBSD-src-769e0f974d8929599ba599ac496510fffc90ff34.tar.gz | |
Major update to the way synchronization is done in the kernel. Highlights
include:
* Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The
alpha port is still in transition and currently uses both.)
* Per-CPU idle processes.
* Interrupts are run in their own separate kernel threads and can be
preempted (i386 only).
Partially contributed by: BSDi (BSD/OS)
Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
Diffstat (limited to 'sys/alpha/include/cpu.h')
| -rw-r--r-- | sys/alpha/include/cpu.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sys/alpha/include/cpu.h b/sys/alpha/include/cpu.h index c9d783b..99eb79e 100644 --- a/sys/alpha/include/cpu.h +++ b/sys/alpha/include/cpu.h @@ -65,7 +65,7 @@ struct clockframe { #define CLKF_BASEPRI(framep) \ (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_IPL_MASK) == 0) #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC]) -#define CLKF_INTR(framep) (intr_nesting_level >= 2) +#define CLKF_INTR(framep) (PCPU_GET(intr_nesting_level) >= 2) /* * Preempt the current process if in interrupt from user mode, @@ -89,9 +89,10 @@ struct clockframe { */ #define signotify(p) aston() -#define aston() (astpending = 1) +#define aston() PCPU_SET(astpending, 1) #ifdef _KERNEL +extern u_int astpending; extern u_int32_t intr_nesting_level; /* bookeeping only; counts sw intrs */ extern u_int32_t want_resched; /* resched() was called */ #endif @@ -132,7 +133,6 @@ struct reg; struct rpb; struct trapframe; -extern struct proc *fpcurproc; extern struct rpb *hwrpb; extern volatile int mc_expected, mc_received; |
