diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2000-10-05 01:18:40 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2000-10-05 01:18:40 +0000 |
| commit | 012bb3e61e5eced6c610f9e036372bf0c8def2d1 (patch) | |
| tree | 87efc733f9b164e8c85c0336f92c8fb7eff6d183 /include/asm-ppc/hardirq.h | |
| parent | 625a1589d3d6464b5d90b8a0918789e3afffd220 (diff) | |
Merge with Linux 2.4.0-test9. Please check DECstation, I had a number
of rejects to fixup while integrating Linus patches. I also found
that this kernel will only boot SMP on Origin; the UP kernel freeze
soon after bootup with SCSI timeout messages. I commit this anyway
since I found that the last CVS versions had the same problem.
Diffstat (limited to 'include/asm-ppc/hardirq.h')
| -rw-r--r-- | include/asm-ppc/hardirq.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/asm-ppc/hardirq.h b/include/asm-ppc/hardirq.h index 07398997a..f7c12df77 100644 --- a/include/asm-ppc/hardirq.h +++ b/include/asm-ppc/hardirq.h @@ -5,16 +5,23 @@ #include <asm/smp.h> /* entry.S is sensitive to the offsets of these fields */ +/* The __last_jiffy_stamp field is needed to ensure that no decrementer + * interrupt is lost on SMP machines. Since on most CPUs it is in the same + * cache line as local_irq_count, it is cheap to access and is also used on UP + * for uniformity. + */ typedef struct { unsigned int __softirq_active; unsigned int __softirq_mask; unsigned int __local_irq_count; unsigned int __local_bh_count; unsigned int __syscall_count; + unsigned int __last_jiffy_stamp; } ____cacheline_aligned irq_cpustat_t; #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ +#define last_jiffy_stamp(cpu) __IRQ_STAT((cpu), __last_jiffy_stamp) /* * Are we in an interrupt context? Either doing bottom half * or hardware interrupt processing? |