)]}' { "commit": "2bbb6817c0ac1b5f2a68d720f364f98eeb1ac4fd", "tree": "05bb5ba54671a8eaeca4fe4406a75e820317e473", "parents": [ "280f06774afedf849f0b34248ed6aff57d0f6908" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Oct 08 16:01:00 2011 +0200" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:31:36 2011 -0800" }, "message": "nohz: Allow rcu extended quiescent state handling seperately from tick stop\n\nIt is assumed that rcu won\u0027t be used once we switch to tickless\nmode and until we restart the tick. However this is not always\ntrue, as in x86-64 where we dereference the idle notifiers after\nthe tick is stopped.\n\nTo prepare for fixing this, add two new APIs:\ntick_nohz_idle_enter_norcu() and tick_nohz_idle_exit_norcu().\n\nIf no use of RCU is made in the idle loop between\ntick_nohz_enter_idle() and tick_nohz_exit_idle() calls, the arch\nmust instead call the new *_norcu() version such that the arch doesn\u0027t\nneed to call rcu_idle_enter() and rcu_idle_exit().\n\nOtherwise the arch must call tick_nohz_enter_idle() and\ntick_nohz_exit_idle() and also call explicitly:\n\n- rcu_idle_enter() after its last use of RCU before the CPU is put\nto sleep.\n- rcu_idle_exit() before the first use of RCU after the CPU is woken\nup.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Mike Frysinger \u003cvapier@gentoo.org\u003e\nCc: Guan Xuetao \u003cgxt@mprc.pku.edu.cn\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Hans-Christian Egtvedt \u003chans-christian.egtvedt@atmel.com\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Russell King \u003clinux@arm.linux.org.uk\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n", "tree_diff": [ { "type": "modify", "old_id": "3f1f8daf703cfa864f14199ef042aa9122334d9a", "old_mode": 33188, "old_path": "arch/arm/kernel/process.c", "new_id": "47e34c091276f4ee4c272d8bc696f2a66931a191", "new_mode": 33188, "new_path": "arch/arm/kernel/process.c" }, { "type": "modify", "old_id": "6ee7952248dbe5eef0da81f172025017ea0465ba", "old_mode": 33188, "old_path": "arch/avr32/kernel/process.c", "new_id": "34c8c703bb161e3585d3bdc581413549d8dfbc3e", "new_mode": 33188, "new_path": "arch/avr32/kernel/process.c" }, { "type": "modify", "old_id": "7b141b5c9e8d629609996716b39e01d6e69cb87a", "old_mode": 33188, "old_path": "arch/blackfin/kernel/process.c", "new_id": "57e07498a0e76db1045028b801ccd718ed860e0b", "new_mode": 33188, "new_path": "arch/blackfin/kernel/process.c" }, { "type": "modify", "old_id": "5407f09b4be46cf8e09fcd001abb1607a59dd978", "old_mode": 33188, "old_path": "arch/microblaze/kernel/process.c", "new_id": "13d59f34b94e151ad5af802b3c88d352384f7b2a", "new_mode": 33188, "new_path": "arch/microblaze/kernel/process.c" }, { "type": "modify", "old_id": "c11e5ca2a434a4cef23b80aa39a58f974ae97be2", "old_mode": 33188, "old_path": "arch/mips/kernel/process.c", "new_id": "17fb3a270160d3cd2b8903aac8a80bbcca6ce7de", "new_mode": 33188, "new_path": "arch/mips/kernel/process.c" }, { "type": "modify", "old_id": "fb6a9bf40006d1c5e98771c03152c1d0684b1346", "old_mode": 33188, "old_path": "arch/openrisc/kernel/idle.c", "new_id": "2e82cd0fa5e1939840f3b7d1508b68a761247863", "new_mode": 33188, "new_path": "arch/openrisc/kernel/idle.c" }, { "type": "modify", "old_id": "878572f70ac5f5bcb1c24e5cab91061cb37ef689", "old_mode": 33188, "old_path": "arch/powerpc/kernel/idle.c", "new_id": "2e782a36d8f2e321a5967e2b0e418b424a234fa9", "new_mode": 33188, "new_path": "arch/powerpc/kernel/idle.c" }, { "type": "modify", "old_id": "e83dfaf89f6978cd53a4f4688666d55546d9fb19", "old_mode": 33188, "old_path": "arch/powerpc/platforms/iseries/setup.c", "new_id": "d69d3d185e89289be10968fcb6517f47bcedbe5c", "new_mode": 33188, "new_path": "arch/powerpc/platforms/iseries/setup.c" }, { "type": "modify", "old_id": "6224f9dbbc1f8c6bca54a6371568dfdb077106c2", "old_mode": 33188, "old_path": "arch/s390/kernel/process.c", "new_id": "6fa987367ae670ec14634f725751a7ef5cb1b4c9", "new_mode": 33188, "new_path": "arch/s390/kernel/process.c" }, { "type": "modify", "old_id": "6015743020a07af21b727f2dfe11544031d525bc", "old_mode": 33188, "old_path": "arch/sh/kernel/idle.c", "new_id": "ad58e7535a7c479ba3236584f0c65bcacd019219", "new_mode": 33188, "new_path": "arch/sh/kernel/idle.c" }, { "type": "modify", "old_id": "9c2795ba2cfe54763600544635823ce18735db9a", "old_mode": 33188, "old_path": "arch/sparc/kernel/process_64.c", "new_id": "4a0e7d79cb926ee2a302ce78a2cfca247afbc0f4", "new_mode": 33188, "new_path": "arch/sparc/kernel/process_64.c" }, { "type": "modify", "old_id": "920e674aedb946a7e4cc0f20eab9fb92af896f3e", "old_mode": 33188, "old_path": "arch/tile/kernel/process.c", "new_id": "53ac89595ab153b1172dcdd3582677bf90c661c1", "new_mode": 33188, "new_path": "arch/tile/kernel/process.c" }, { "type": "modify", "old_id": "cfb657e9284912576ebffc7b8b983e6c369b4075", "old_mode": 33188, "old_path": "arch/um/kernel/process.c", "new_id": "55d2cf455f630b7f70bfd422bce51e707e7d87ab", "new_mode": 33188, "new_path": "arch/um/kernel/process.c" }, { "type": "modify", "old_id": "9999b9a84d4677379529a50b1009a9c3a70f8e93", "old_mode": 33188, "old_path": "arch/unicore32/kernel/process.c", "new_id": "095ff5a57928fb0f7e7e0b6c64bc8d73f6e41d24", "new_mode": 33188, "new_path": "arch/unicore32/kernel/process.c" }, { "type": "modify", "old_id": "6d9d4d52cac5af848b41a360c1d6cb32eb5bfe65", "old_mode": 33188, "old_path": "arch/x86/kernel/process_32.c", "new_id": "f94da3920c36bc1501b395b24ef3cac4ace20d78", "new_mode": 33188, "new_path": "arch/x86/kernel/process_32.c" }, { "type": "modify", "old_id": "b069e9d7875f7c3b4552a9b25e0409dc9c1f87e1", "old_mode": 33188, "old_path": "arch/x86/kernel/process_64.c", "new_id": "18e8cf3581f660efa6d6b6d93fd3e5eb1bd7b533", "new_mode": 33188, "new_path": "arch/x86/kernel/process_64.c" }, { "type": "modify", "old_id": "0df1d50a408ae13b7ef6528036dcfe580a887c45", "old_mode": 33188, "old_path": "include/linux/tick.h", "new_id": "327434a057572548f089443c8108422419923402", "new_mode": 33188, "new_path": "include/linux/tick.h" }, { "type": "modify", "old_id": "266c242dc354dda5739066e06e5589453b4bc1b4", "old_mode": 33188, "old_path": "kernel/time/tick-sched.c", "new_id": "c76aefe764b0f19e502da8feaf20bbe7acad726f", "new_mode": 33188, "new_path": "kernel/time/tick-sched.c" } ] }