FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F5.2.0 2003-11-20T15:35:48Z 2003-11-20T15:35:48Z Mark Murray markm@FreeBSD.org 2003-11-20T15:35:48Z urn:sha1:4e3a7a14d9ee7553f12363ada914d792b7f5e021 happen in interrupt context; 1) sleep locks, and 2) malloc/free calls. 1) is fixed by using spin locks instead. 2) is fixed by preallocating a FIFO (implemented with a STAILQ) and using elements from this FIFO instead. This turns out to be rather fast. OK'ed by: re (scottl) Thanks to: peter, jhb, rwatson, jake Apologies to: * 2003-11-17T23:02:21Z Mark Murray markm@FreeBSD.org 2003-11-17T23:02:21Z urn:sha1:0887c8c110da2f060bc422e6942320054bcc755d o Each source gets its own queue, which is a FIFO, not a ring buffer. The FIFOs are implemented with the sys/queue.h macros. The separation is so that a low entropy/high rate source can't swamp the harvester with low-grade entropy and destroy the reseeds. o Each FIFO is limited to 256 (set as a macro, so adjustable) events queueable. Full FIFOs are ignored by the harvester. This is to prevent memory wastage, and helps to keep the kernel thread CPU usage within reasonable limits. o There is no need to break up the event harvesting into ${burst} sized chunks, so retire that feature. o Break the device away from its roots with the memory device, and allow it to get its major number automagically. 2003-11-09T09:17:26Z Seigo Tanimura tanimura@FreeBSD.org 2003-11-09T09:17:26Z urn:sha1:512824f8f7748f7bb54ef900bc8e68a95a3d0f4d thread being waken up. The thread waken up can run at a priority as high as after tsleep(). - Replace selwakeup()s with selwakeuppri()s and pass appropriate priorities. - Add cv_broadcastpri() which raises the priority of the broadcast threads. Used by selwakeuppri() if collision occurs. Not objected in: -arch, -current 2003-11-02T10:55:16Z Mark Murray markm@FreeBSD.org 2003-11-02T10:55:16Z urn:sha1:f757589236b4ab8b41b811afee170c30f6157e70 code considerably. Submitted by: (forgotten) [I'll happily acknowledge the submitter if he owns up!] 2003-08-24T17:55:58Z David E. O'Brien obrien@FreeBSD.org 2003-08-24T17:55:58Z urn:sha1:aad970f1fee9a2a3e5a0f880be9b87c6193b3bd1 Also some minor style cleanups. 2003-07-02T08:04:57Z Poul-Henning Kamp phk@FreeBSD.org 2003-07-02T08:04:57Z urn:sha1:68c2a41e6ce830dc667df31a243debfde23682fd 2003-03-03T12:15:54Z Poul-Henning Kamp phk@FreeBSD.org 2003-03-03T12:15:54Z urn:sha1:7ac40f5f59dea6e9ab4869e974bdd4026274e921 branches: Initialize struct cdevsw using C99 sparse initializtion and remove all initializations to default values. This patch is automatically generated and has been tested by compiling LINT with all the fields in struct cdevsw in reverse order on alpha, sparc64 and i386. Approved by: re(scottl) 2003-02-19T05:47:46Z Warner Losh imp@FreeBSD.org 2003-02-19T05:47:46Z urn:sha1:a163d034fadcfb4a25ca34a2ba5f491c47b6ff69 Approved by: trb 2003-01-21T08:56:16Z Alfred Perlstein alfred@FreeBSD.org 2003-01-21T08:56:16Z urn:sha1:44956c9863dc03344b03bdf6a83acf4e743f8e50 Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT. 2002-10-02T07:44:29Z Scott Long scottl@FreeBSD.org 2002-10-02T07:44:29Z urn:sha1:316ec49abd15743784b47592c00d6297dabce21b doesn't give them enough stack to do much before blowing away the pcb. This adds MI and MD code to allow the allocation of an alternate kstack who's size can be speficied when calling kthread_create. Passing the value 0 prevents the alternate kstack from being created. Note that the ia64 MD code is missing for now, and PowerPC was only partially written due to the pmap.c being incomplete there. Though this patch does not modify anything to make use of the alternate kstack, acpi and usb are good candidates. Reviewed by: jake, peter, jhb