Commit Graph

10 Commits

Author SHA1 Message Date
Julian Elischer
431f890614 generally we are interested in what thread did something as
opposed to what process. Since threads by default have teh name of the
process unless over-written with more useful information, just print the
thread name instead.
2007-11-14 06:21:24 +00:00
Stephan Uphoff
f53d15fe1b Initial checkin for rmlock (read mostly lock) a multi reader single writer
lock optimized for almost exclusive reader access. (see also rmlock.9)

TODO:
    Convert to per cpu variables linkerset as soon as it is available.
    Optimize UP (single processor)  case.
2007-11-08 14:47:55 +00:00
John Baldwin
55de4dcab6 Fix 'show allpcpu' ddb command on non-x86. CPU IDs are in the range 0 ..
mp_maxid, not 0 .. mp_maxid - 1.  The result was that the highest numbered
CPU was skipped on Alpha and sparc64.

MFC after:	1 week
2005-11-03 21:06:29 +00:00
Robert Watson
9b7915859d Add "show allpcpu" to DDB, which prints the current CPU id followed by
the per-cpu data for all CPUs.  This is easier to ask users to do than
"figure out how many CPUs you have, now run show pcpu, then run it
once for each CPU you have".

MFC after:	3 days
2005-09-26 16:55:11 +00:00
Warner Losh
9454b2d864 /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
David E. O'Brien
677b542ea2 Use __FBSDID(). 2003-06-11 00:56:59 +00:00
Peter Wemm
ab8061d84c Add a per-cpu variable, cpumask, the preshifted equivalent of 1 << cpuid.
We use this around the place a lot.
2002-01-05 09:35:50 +00:00
John Baldwin
0bbc882680 Overhaul the per-CPU support a bit:
- The MI portions of struct globaldata have been consolidated into a MI
  struct pcpu.  The MD per-CPU data are specified via a macro defined in
  machine/pcpu.h.  A macro was chosen over a struct mdpcpu so that the
  interface would be cleaner (PCPU_GET(my_md_field) vs.
  PCPU_GET(md.md_my_md_field)).
- All references to globaldata are changed to pcpu instead.  In a UP kernel,
  this data was stored as global variables which is where the original name
  came from.  In an SMP world this data is per-CPU and ideally private to each
  CPU outside of the context of debuggers.  This also included combining
  machine/globaldata.h and machine/globals.h into machine/pcpu.h.
- The pointer to the thread using the FPU on i386 was renamed from
  npxthread to fpcurthread to be identical with other architectures.
- Make the show pcpu ddb command MI with a MD callout to display MD
  fields.
- The globaldata_register() function was renamed to pcpu_init() and now
  init's MI fields of a struct pcpu in addition to registering it with
  the internal array and list.
- A pcpu_destroy() function was added to remove a struct pcpu from the
  internal array and list.

Tested on:	alpha, i386
Reviewed by:	peter, jake
2001-12-11 23:33:44 +00:00
John Baldwin
882bcf5879 Document the requirements and nature of the logical CPU IDs. It isn't
very strict and leaves much up to the platform so that it can define a
convenient mapping.

Requested by:	mjacob
2001-10-24 22:15:38 +00:00
John Baldwin
ba228f6d96 - Split out the support for per-CPU data from the SMP code. UP kernels
have per-CPU data and gdb on the i386 at least needs access to it.
- Clean up includes in kern_idle.c and subr_smp.c.

Reviewed by:	jake
2001-05-10 17:45:49 +00:00