̾??

????

????

??ǽ???˥????󥰤򤹤륫???󥿤ؤ????ƤΥ????????? ?ǥХ??????ü??ե??????? “/dev/perfmon” ???޲??Ȥ??ƽ????????ޤ??? ???ΥǥХ??????󶡤??? ioctl(2) ?ꥯ?????Ȥ?¿?????? ⟨machine/perfmon.h⟩ ?????????????졢???Υե??????????ˤ? Pentium ?? Pentium Pro ?ץ????å???ξ???ο????ʥ????󥿤??????⤢???ޤ???

???ջ???: ???Ѳ?ǽ?ʥ??٥??Ȥν????ϥץ????å????˰ۤʤ??ޤ??? ???Ѥ????륤?٥??ȥ????ɤ?¬?ꤵ???? CPU ?η??????Ф??? Ŭ???Ǥ??뤳?Ȥ???ǧ???뤳?Ȥϥץ??????ޤ???Ǥ?Ǥ???

?ʲ??? ioctl(2) ?ꥯ?????Ȥ??????????Ƥ??ޤ?:

PMIOSETUP

(struct pmc) ??¤?Τ??????????Ƥ????ѥ??᡼???ȥե饰?ǥ????󥿤????ꤷ?ޤ??? ?ʲ??Υե??????ɤ? struct pmc ???????????Ƥ??ޤ?:

int pmc_num

???ꤹ?륫???????ֹ??Ǥ??? NPMC (???ߤ? 2) ???꾮?????ʤ????Фʤ??ޤ?????

u_char pmc_event

???˥????٤??????Υ??٥??ȥ????ɤǡ? ⟨machine/perfmon.h⟩ ???????????Ƥ??ޤ???

u_char pmc_unit

???٥??Ȥη????б????????֤Υޥ??????ͤǤ? ( Intel ??ʸ???򻲾?)??

u_char pmc_flags

?????󥿤?Ư?????ѹ??????ե饰 (????????) ?Ǥ???

u_char pmc_mask

?????󥿤Υޥ??????ͤǤ????Ĥޤꡢ???衢?????ͤϻ??ꤵ?줿???Υ????å? ?ʾ? (???ϰʲ?) ?δַ?³???륤?٥??Ȥ˥??????Ȥ????¤????٤˻??Ѥ????뤷?????? ?Ǥ???

???Τ褦?? pmc_flags ???ͤ??????????Ƥ??ޤ?:

PMCF_USR

???٥??Ȥ??桼???⡼?ɤǥ??????Ȥ??ޤ???

PMCF_OS

???٥??Ȥ򥫡??ͥ??⡼?ɤǥ??????Ȥ??ޤ???

PMCF_E

???٥??Ȥ???³???֤ǤϤʤ????ο??ǥ??????Ȥ??ޤ???

PMCF_INV

?????󥿤Υޥ????????Ӥΰ?̣????ž???ޤ???

PMIOGET

(struct pmc) ???ꤵ?줿?????󥿤θ??ߤ????????֤??ޤ???

PMIOSTART

 

PMIOSTOP

(int) ???ꤷ???????󥿤???ư (????) ???ޤ????ϡ??ɥ??????η??٤ˤ??ꡢ?ֹ????? ??ư?????ߤ򤷤ʤ????Фʤ??ޤ????? (¨???????????? 0 ??ɬ???ޤ????????? 1 ?????ߤ??Ƥ??????ߤ??ʤ????Фʤ??ޤ???)?? ?ɥ饤?ФǤϤ????????? ???????Ƥ??ޤ??? (?ȸ????Τ⾭???? CPU ?ǤϤ????????Ϥʤ??ʤ뤫???Τ??ޤ???)??

PMIORESET

(int) ???ꤵ?줿?????󥿤? 0 ?˥ꥻ?åȤ??ޤ????????󥿤ϥꥻ?åȤ??????? PMIOSTOP ?ˤ??????ߤ????ʤ????Фʤ??ޤ????????ƤΥ????󥿤ϼ?ưŪ?? PMIOSETUP ?ˤ??äƥꥻ?åȤ????ޤ???

PMIOREAD

(struct pmc_data) ?????󥿤θ??ߤ??ͤ??????Ф??ޤ??? pmc_data ??¤?Τˤϼ??Τ褦?? 2 ?ĤΥե??????ɤ??????????Ƥ??ޤ?:

int pmcd_num

?ɤ߽Ф??????󥿤??ֹ档

int pmcd_value

64 ?ӥåȤ??????դ??????Ǥν?λ?͡?

???衢 Pentium Pro ?ץ????å????? ?????󥿤?ľ???ɤ߽Ф??٤? RDPMC ̿???????ѽ??????ͤˤʤ??Ǥ??礦??

PMIOTSTAMP

(struct pmc_tstamp) ?????ॹ?????ץ????󥿤??ɤ߽Ф??ޤ??? pmc_tstamp ??¤?ΤǤ? 2 ?ĤΥե??????ɤ??????????Ƥ??ޤ?:

int pmct_rate

?????󥿤? MHz ?ǤΤ????褽??®?٤Ǥ???

quad_t pmct_value

64 ?ӥå??????ǤΥ????󥿤θ??ߤ??ͤǤ???

pmct_rate ?ե??????ɤ?Ϳ???????륫???󥿤?®?٤ϡ? ???????????ʻ??䥯???å??οʹԤ??Դ????ʰ٤ˡ? ?????ˤ??????ΤǤϤʤ????Ȥ????դ??????????ڤǤ??? ???Υե??????ɤˤĤ??Ƥ? ?????å???????®?٤??ºݤ?ɽ?????????ΤȤ????????? ?꤬???꤫????Ŭ?????θ??????餤?˹ͤ????٤??Ǥ???

??Ϣ?ե?????

/dev/perfmon

?????󥿤ؤ?ʸ?????ǥХ????Υ??󥿥ե?????

/usr/include/machine/perfmon.h

??¤?Τȥ??٥??ȥ????ɤ????????Ƥ??륤?󥯥롼?ɥե?????

/usr/share/examples/perfmon

???Ƥ? ioctl() ???ޥ??ɤλ??Ѥ?????Ū???㼨?????????ץ??Υ???????????

??Ϣ????

????

????