Re: per-cpu TSS

[yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi)]

> i want to get rid of ltr from cpu_switchto.

the following is a result of "fmt.sh <tprof.out|head -30".
tprof.out here was taken while running mysql sysbench.
"cpu_switchto+0x4f" is the next address of the ltr instruction.

YAMAMOTO Takashi


13259   c039b98a        x86_pause+0x2
7652    c039b571        bus_space_read_4+0x11
2735    c010ce12        mutex_enter+0x12
2308    c02dd845        _kernel_lock+0xc5
2182    c010cfcd        __cpu_simple_lock_try+0xd
1824    c010cef5        mutex_spin_enter+0x35
1536    c039b988        x86_pause
1525    c01005c4        sse2_zero_page+0x14
1515    c0100c4c        spllower+0x2c
1384    c01005c0        sse2_zero_page+0x10
1379    c0100490        Xsyscall
1285    c039ef5f        invlpg+0x7
1234    c010cf9d        __cpu_simple_lock+0xd
737     c01003cf        cpu_switchto+0x4f
732     c0100fb9        Xintr_lapic_tlb_mcast+0x49
710     c02dd84e        _kernel_lock+0xce
641     bb86b9a7        start
634     bb9002a7        start
609     c01006fc        copyout+0x3c
609     c010ce5f        rw_enter+0x1f
577     c02abc50        nonresident_rotate+0x10
576     c0100523        syscall1+0x91
572     c03a57ff        syscall+0x4f
552     c010cf32        mutex_spin_exit+0x32
499     c03585b8        ether_input+0x48
482     c010074a        copyin+0x3a
472     c010ce30        mutex_exit+0x10
470     c010052b        syscall1+0x99
467     c010ce9e        rw_exit+0x1e
441     bb86ba47        start