<![CDATA[铚楃獫绉戞妧]]> http://www.71402172.com/ zh-cn www.emlog.net Linux鐨勬椂閽?/title> <link>http://www.71402172.com/timer_subsystem/clock-id-in-linux.html</link> <description><![CDATA[?#26882;閽?#37812;栬?#38333;?#29723;紙clock锛夋槸涓绉嶈?#26882;?#20240;鍏凤紝姣?#28051;?#27996;洪兘鑷冲?#25118;湁涓鍧楋紝鍙兘鍦ㄤ綘鐨勬墜鏈洪噷?#32029;?#31683;鍙兘浣?#37812;?#37734;ㄤ綘鐨勬墜鑵?#28051;?#37510;傚鏋淟inux?#31683;?#27128;涓涓櫘閫?#27996;?#37928;勮瘽?#32029;?#20549;涔堝ス鐨勬墜鑵?#28051;?#25652;旇鏈夊崄鍑?#37735;楁墜琛紝?#23512;鎷?#38171;欳LOCK_REALTIME銆丆LOCK_MONOTONIC銆丆LOCK_PROCESS_CPUTIME_ID銆丆LOCK_THREAD_CPUTIME_ID銆丆LOCK_MONOTONIC_RAW銆丆LOCK_REALTIME_COARSE銆丆LOCK_MONOTONIC_COARSE銆丆LOCK_BOOTTIME銆丆LOCK_REALTIME_ALARM銆丆LOCK_BOOTTIME_ALARM銆丆LOCK_TAI銆?#37832;?#37826;?#28051;?#29781;佸氨?#27128;?#31897;缁峀inux鍐呮牳涓?#37928;?#35120;?#35120;?#38009;?#38009;?#37928;勨?#38333;?#29723;ㄢ?#37510;?<a href="http://www.71402172.com/timer_subsystem/clock-id-in-linux.html">闃呰鍏?#37826;?gt;></a>]]></description> <pubDate>Wed, 17 May 2017 10:55:56 +0000</pubDate> <author>linuxer</author> <guid>http://www.71402172.com/timer_subsystem/clock-id-in-linux.html</guid> </item> <item> <title>Linux?#26882;?#26879;瀛愮郴缁?#28052;嬶紙?#23812;鍥?#38171;?#38171;歵ick broadcast framework http://www.71402172.com/timer_subsystem/tick-broadcast-framework.html 鍦?#37712;呮牳涓紝鏈塩puidle framework鍙互鎺у埗cpu鐨勮妭鐢?#38171;?#35120;撴病鏈夎繘绋嬭皟搴﹀埌璇pu涓?#37813;?#29723;?#37928;勬椂鍊欙紝swapper?#32344;绋?#32494;夊ⅷ鐧?#37734;猴紝?#30370;璇pu?#32048;琚?#37818;?#37711;ュ埌idle鐘舵?#37510;傚綋鐒? CPU鐨刬dle鐘舵?#37832;夋繁鏈夋?#21635;紝褰揅PU鐫?#37928;勬?#26055;緝娣?#37711;?#37928;勬椂鍊欙紝鏈?#37721;兘?#32048;鍏抽棴鏈?#37734;?#37928;則imer纭欢銆?#26473;?#37837;峰氨?#32048;?#32041;鍏?#28051;涓緢鏈夋剰鎬?#37928;?#38338;锛歭ocal timer?#30370;鏃?#23049;曞敜閱扖PU?#32029;璇pu涓?#37928;勬墍鏈?#37928;剆oftware timer?#30370;鏃?#23049;曞敜閱抍pu銆倀ick broadcast framework?#27688;?#27128;鐢?#37833;?#29785;?#37712;?#26473;?#28051;?#38338;鐨?#37510;?

鏈?#37826;?#28051;?#37928;?#28000;g爜鏉?#38007;猯inux kernel 4.0銆?

闃呰鍏?#37826;?gt;>]]>
Thu, 21 May 2015 11:26:10 +0000 linuxer http://www.71402172.com/timer_subsystem/tick-broadcast-framework.html
Linux?#26882;?#26879;瀛愮郴缁?#28052;嬶紙?#23812;涓?#38171;?#38171;歍ick Device layer缁?#26473;?/title> <link>http://www.71402172.com/timer_subsystem/tick-device-layer.html</link> <description><![CDATA[<p> ?#26882;?#26879;瀛愮郴缁?#28051;?#37928;則ick device layer涓?#29781;佹秹鍙妅ernel/time/tick-*鐩?#37711;?#37928;勬?#22246;欢?#32029;鏈?#37826;?#37928;?#28051;?#29781;佸唴瀹瑰氨?#27128;浠巋igh level灞傛?#32025;涓?#32510;犵紶鍦?#37711;?#28003;?#37928;勬瘡琛屼唬?#29212;锛夋弿杩皌ick device layer鐨勮繍浣?#38315;昏緫銆? </p> <p> 濡? 鏋?#29831;?#23011;?#28051;?c鏂囦?#33333;槸涓涓?#22959;?#37735;楃?#21230;瘽?#32029;鎴?#28000;?#37721;互棣?#37711;?#32480;鍗曟弿杩皌ick device layer鐨勫悇涓?#22959;?#37735;?#37510;倀ick-common.c?#24383;杩?#27996;唗ick device鐨?#28051;浜?#38315;?#37922;?#37823;?#28003;滐紝姝?#28598;栵紝璇?#37826;囦欢杩樺寘鎷?#27996;嗗懆鏈熸ick鐨?#28000;g爜銆傛兂瑕佽?#37108;缁熷伐浣?#37734;╰ickless mode?#32025;?#27967;鍑?#32429;?#25652;旇?#27128;Dynamic tick妯?#37735;楋紝?#31683;?#27688;?#27128;璇?#37837;?#37817;郴缁?#37928;?#35120;撳?#23944;繍琛岀?#36346;?#30857;紝?#23017;鎬?#37928;勫惎?#20192;?#25030;鏈熸ick锛夐渶瑕?#28051;?#28051;?#22959;?#37735;楃?#21228;敮?#23508;?#32029;鍒?#37714;槸tick-oneshot.c鍜宼ick- sched.c銆倀ick-oneshot.c涓?#29781;佹槸鎻?#28186;?#37724;宼ick device鐨刼ne shot mode鐩?#37711;?#37928;勬搷浣?#37818;?#37721;?#37713;?#37825;?#37510;?#28000;?#28699;楅潰涓婄湅?#32029;tick-sched.c?#27128;鍜宼ick鐨勮皟搴?#37929;?#37711;筹紝鎵璋搕ick鐨勮皟搴﹀寘鎷?#28051;?#28051;?#37826;归潰?#32029;涓鏂归潰?#27128;鍦ㄧ郴缁熸?#29238;杩?#29723;?#26473;? 绋?#28051;紝濡?#28003;?#27996;?#37922;熷懆鏈熸?#37928;則ick event?#32029;鍙?#28051;鏂归潰?#27128;鍦ㄧ郴缁熸病鏈変?#35826;姟鎵?#29723;岋紝?#32344;鍏dle鐘舵?#37928;勬椂鍊欙紝濡?#28003;曞仠姝㈠懆鏈熸?#37928;則ick?#32029;?#20114;鍙婃仮澶?#37928;勬椂鍊?#28641;?#28003;曟洿鏂扮郴缁?#37912;舵侊紙渚?#28641;?#38171;歫iffies 绛?#38171;?#37510;倀ick-broadcast.c鍜宼ick-broadcast-hrtimer.c?#27128;鍜宼ick broadcast鐩?#37711;筹紝鏈?#37826;?#28051;嶄細娑?#37721;?#26473;?#38318;?#37714;?#37928;?#37712;?#28729;癸紝?#32048;鏈?#28051;?#38338;?#37928;勬枃妗f弿杩?#28729;?#37510;? </p> <p> 鏈?#37826;?#37928;勭浜岀珷?#24383;杩?#27996;?#37711;?#27996;巘ick device姒?#26473;?#37804;?#37928;?#37712;?#28729;癸紝?#27554;鍚?#37734;?#32471;?#28051;夌珷?#24383;杩?#27996;唗ick device layer?#27128;濡?#28003;?#37714;?#28654;?#37718;?#37928;勶紝鐢?#27996;巘ick device寮濮?#37804;绘槸?#20240;浣?#37734;╬eriodic mode?#32029;鍥?#23005;わ紝鏈珷?#31683;?#27688;椤?#28186;挎弿杩?#27996;嗗懆鏈熸ick鐨勮繍浣?#37510;傚鏋?#32429;欢?#20114;鍙婄郴缁熼?#23943;疆鍏佽?#38761;紝?#37108;缁?#28051;?#37928;則ick device?#32048;鍒?#37817;ne shot mode?#32029;浠?#38000;岃繘鍏ickless mode?#32029;鍥?#23005;?#32471;?#37733;涚珷?#24383;杩?#27996;?#37734;?#38320;嶇疆浜嗛珮绮?#25652;imer鐨勬儏鍐典笅?#32029;dynamic tick濡?#28003;?#26473;?#28003;?#28052;?#37832;?#37918;嗭紝绗?#27996;?#32468;犲?#23680;鍥涚?#29365;被浼硷紝鍙?#28051;嶈?#22248;弿杩?#37928;勬槸?#30149;鏈夐?#23943;疆?#29678;绮?#25652;imer鐨勬儏鍐?#37510;? </p> <a href="http://www.71402172.com/timer_subsystem/tick-device-layer.html">闃呰鍏?#37826;?gt;></a>]]></description> <pubDate>Thu, 26 Mar 2015 10:50:55 +0000</pubDate> <author>linuxer</author> <guid>http://www.71402172.com/timer_subsystem/tick-device-layer.html</guid> </item> <item> <title>Linux?#26882;?#26879;瀛愮郴缁?#28052;嬶紙浜?#38171;?#38171;氳蔣?#27426;鏋?#37835;?/title> <link>http://www.71402172.com/timer_subsystem/time-subsyste-architecture.html</link> <description><![CDATA[鏈?#37826;?#37928;?#28051;?#29781;佸唴瀹规槸?#24383;杩?#37712;呮牳?#26882;?#26879;瀛愮郴缁?#37928;勮蔣浠舵鏋?#37510;?#26851;?#37711;堜粙缁?#27996;?#28000;?#37827;?#37928;勬椂?#26879;瀛愮郴缁?#26473;?#32457;诲埌鏂?#37928;勬椂?#26879;瀛愮郴缁?#37928;勬?#24878;?#24971;紝?#31897;缁?#37826;?#37928;勬椂?#26879;瀛愮郴缁?#37928;?#28028;樺娍銆?#32471;?#28051;夌珷姹?#37825;?#27996;嗘椂?#26879;瀛愮郴缁?#37928;?#37929;?#37711;?#37826;囦欢?#20114;鍙?#37712;呮牳閰嶇疆銆?#37832;鍚庢弿杩板悇绉?#37712;呮牳閰嶇疆?#31493;鐨勬椂?#26879;瀛愮郴缁?#37928;勬暟鎹?#23092;佸?#23678;帶?#22487;娴?#37510;?<a href="http://www.71402172.com/timer_subsystem/time-subsyste-architecture.html">闃呰鍏?#37826;?gt;></a>]]></description> <pubDate>Sat, 07 Mar 2015 10:37:48 +0000</pubDate> <author>linuxer</author> <guid>http://www.71402172.com/timer_subsystem/time-subsyste-architecture.html</guid> </item> <item> <title>Linux?#26882;?#26879;瀛愮郴缁?#28052;嬶紙鍏?#38171;?#38171;歅OSIX timer http://www.71402172.com/timer_subsystem/posix-timer.html 鍦?a href="http://www.71402172.com/timer_subsystem/timer_subsystem_userspace.html">鐢?#37812;?#32460;洪棿鎺?#37721;?#37713;?#37825;?#37826;?#22935;?/a>涓紝 鎴?#28000;弿杩?#27996;嗗拰POSIX timer鐩?#37711;?#37928;勬搷浣滐紝涓?#29781;佸寘鎷?#37714;涘缓涓涓猼imer銆佽瀹歵imer銆佽幏鍙杢imer鐨?#37912;舵?#37510;佽幏鍙杢imer overrun鐨勪俊鎭?#37510;佸垹闄imer銆?#37832;?#37826;囧皢娌?#37931;杩?#27996;?#37922;?#37812;?#32460;洪棿鐨勬帴鍙?#28729;?#28052;?#37833;ョ湅?#28229;鍐呮牳鎬?#37928;?#28729;炵幇銆傝櫧鐒禤OSIX timer鍙互鍩?#27996;庡悇绉?#28051;?#37722;?#37928;刢lock鍒涘缓?#32029;鏈?#37826;?#28051;?#29781;佹弿杩皉eal time clock鐩?#37711;?#37928;則imer銆?

鏈?#37826;?#32471;?#27996;岀珷?#24383;杩?#27996;哖OSIX timer鐨勫熀鏈?#29114;?#21997;紝绗?#28051;夌珷?#24383;杩扮郴缁熻皟鐢?#37928;?#37711;?#28003;?#28729;炵幇?#32029;绗?#37733;涚珷涓?#29781;佽?#30632;eal time clock鐨則imer callback鍑?#37825;?#37928;?#28729;炵幇?#32029;绗?#27996;旂珷?#31897;缁?#27996;唗imer瓒?#37832;?#37722;庯紝鍐呮牳濡?#28003;曞?#21229;悊?#20426;鍙?#37510;?

闃呰鍏?#37826;?gt;>]]>
Thu, 22 Jan 2015 10:12:26 +0000 linuxer http://www.71402172.com/timer_subsystem/posix-timer.html
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