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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> Hi skiboot experts, <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US>Here are some questions on skiboot timer module, please help to answer:<o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>On skiboot boot phase, OS not setup, so there is no OPAL_POLL_EVENTS or hardware interrupt that can trigger check_timer().<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:0cm'><span lang=EN-US>How can we trigger check_timer() in this phase? APPs like PCIe/I2C can only actively call check_timer() to trigger?<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:0cm'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Some events can be added in opal poller list, some can be added in timer(TIMER_POLL),<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:0cm'><span lang=EN-US>They can all be executed in OPAL_POLL_EVENTS –> opal_run_pollers(), Is there some criterion to add which one?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>timer(TIMER_POLL) has overhead lock in __check_poll_timers, but there is no lock in opal poller process. <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:0cm'><span lang=EN-US>Besides, __check_poll_timers remove the timer that processed, so timer(TIMER_POLL) Is a one-time timer, not like opal poller which is period timer.<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:0cm'><span lang=EN-US>It seem opal poller is more advantage than timer(TIMER_POLL)?<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:39.0pt;text-indent:0cm'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> <img width=1106 height=243 id="图片_x0020_1" src="cid:image002.jpg@01D9C951.F52BE990"><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best Regards<o:p></o:p></span></p></div></body></html>