FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=release%2F8.2.0 2010-08-05T22:01:14Z 2010-08-05T22:01:14Z John Baldwin jhb@FreeBSD.org 2010-08-05T22:01:14Z urn:sha1:d4b6c4d58ad6c82c6042ff2a46487ab537fe4c22 Mark the __curthread() functions as __pure2 and remove the volatile keyword from the inline assembly. This allows the compiler to cache invocations of curthread since it's value does not change within a thread context. 2010-07-14T21:10:14Z John Baldwin jhb@FreeBSD.org 2010-07-14T21:10:14Z urn:sha1:f2d982501bf5e798a804cbf500705a0db5dbb8ad Add support for corrected machine check interrupts. CMCI is a new local APIC interrupt that fires when a threshold of corrected machine check events is reached. CMCI also includes a count of events when reporting corrected errors in the bank's status register. Note that individual banks may or may not support CMCI. If they do, each bank includes its own threshold register that determines when the interrupt fires. Currently the code uses a very simple strategy where it doubles the threshold on each interrupt until it succeeds in throttling the interrupt to occur only once a minute (this interval can be tuned via sysctl). The threshold is also adjusted on each hourly poll which will lower the threshold once events stop occurring. 2009-05-06T17:48:39Z Doug Rabson dfr@FreeBSD.org 2009-05-06T17:48:39Z urn:sha1:8480241102f2c23920e7450bd9ad517ebf054697 2009-04-01T13:09:26Z Konstantin Belousov kib@FreeBSD.org 2009-04-01T13:09:26Z urn:sha1:2c66cccab7ceceb3eed086da3b2dedfc77ce72de the kernel on amd64. Fill and read segment registers for mcontext and signals. Handle traps caused by restoration of the invalidated selectors. Implement user-mode creation and manipulation of the process-specific LDT descriptors for amd64, see sysarch(2). Implement support for TSS i/o port access permission bitmap for amd64. Context-switch LDT and TSS. Do not save and restore segment registers on the context switch, that is handled by kernel enter/leave trampolines now. Remove segment restore code from the signal trampolines for freebsd/amd64, freebsd/ia32 and linux/i386 for the same reason. Implement amd64-specific compat shims for sysarch. Linuxolator (temporary ?) switched to use gsbase for thread_area pointer. TODO: Currently, gdb is not adapted to show segment registers from struct reg. Also, no machine-depended ptrace command is added to set segment registers for debugged process. In collaboration with: pho Discussed with: peter Reviewed by: jhb Linuxolator tested by: dchagin 2009-03-11T15:30:12Z Doug Rabson dfr@FreeBSD.org 2009-03-11T15:30:12Z urn:sha1:126780243806a6b6cf345b9b548f68010e921aec 2008-09-08T09:59:05Z Konstantin Belousov kib@FreeBSD.org 2008-09-08T09:59:05Z urn:sha1:3bd5e467b2152635867ff255ac3ad273bb3325d2 location in GDT where the segment descriptor from pcb_gs32sd is copied, and the location is in GDT local to CPU. Noted and reviewed by: peter MFC after: 1 week 2008-08-19T19:53:52Z John Baldwin jhb@FreeBSD.org 2008-08-19T19:53:52Z urn:sha1:70d12a18f21f17d8beb0fbead08f76ae36cc25e2 already define _KERNEL to get to this and I'm about to add hooks to libkvm to access per-CPU data. MFC after: 1 week 2008-04-25T05:18:50Z Jeff Roberson jeff@FreeBSD.org 2008-04-25T05:18:50Z urn:sha1:6c47aaae12ea84af9d94e32796fccb873af36a0e from idle over the next tick. - Add a new MD routine, cpu_wake_idle() to wakeup idle threads who are suspended in cpu specific states. This function can fail and cause the scheduler to fall back to another mechanism (ipi). - Implement support for mwait in cpu_idle() on i386/amd64 machines that support it. mwait is a higher performance way to synchronize cpus as compared to hlt & ipis. - Allow selecting the idle routine by name via sysctl machdep.idle. This replaces machdep.cpu_idle_hlt. Only idle routines supported by the current machine are permitted. Sponsored by: Nokia 2007-06-04T21:38:48Z Attilio Rao attilio@FreeBSD.org 2007-06-04T21:38:48Z urn:sha1:6759608248f30eb575170c0700cc99140e0bdc35 - Rename PCPU_LAZY_INC into PCPU_INC - Add the PCPU_ADD interface which just does an add on the pcpu member given a specific value. Note that for most architectures PCPU_INC and PCPU_ADD are not safe. This is a point that needs some discussions/work in the next days. Reviewed by: alc, bde Approved by: jeff (mentor) 2007-03-11T05:54:29Z Alan Cox alc@FreeBSD.org 2007-03-11T05:54:29Z urn:sha1:c640357f04dba4c8a42e43a1c44a85f97d359302 header file. Reimplement PCPU_LAZY_INC() on amd64 and i386 making it atomic with respect to interrupts. Reviewed by: bde, jhb