CVS log for src/common/lib/libc/sys/cpuset.c

Up to [cvs.NetBSD.org] / src / common / lib / libc / sys

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

Ooops, restore accidently removed files from merge mishap

Sync with HEAD

Sync with HEAD

Pull up following revision(s) (requested by maxv in ticket #1260):

	common/lib/libc/sys/cpuset.c: revision 1.21
	usr.sbin/cpuctl/cpuctl.c: revision 1.30

Fix bug, the computation of cpuset_nentries was incorrect, we must do +1
to be able to address the last 32 bits.

On a machine with 80 CPUs, this caused "cpuctl identify >64" to return
garbage.

Check the return value of cpuset_set(), to prevent future surprises.

Fix bug, the computation of cpuset_nentries was incorrect, we must do +1
to be able to address the last 32 bits.

On a machine with 80 CPUs, this caused "cpuctl identify >64" to return
garbage.

Sync with HEAD

Avoid undefined behavior in an cpuset.c

Do not change the signedness bit with a left shift operation.
Switch to unsigned integer to prevent this.

cpuset.c:112:18, left shift of 1 by 31 places cannot be represented in type 'int'

Detected with micro-UBSan in the user mode.

Add bunch of missing includes of namespace.h in libc

The NetBSD Standard C Library uses internally some of its functions with
a mangled symbol name, usually "_symbol". The internal functions shall not
use the global (public) symbols.

This change eliminates usage of the global changes of the following symbols:
 - strlcat -> _strlcat
 - sysconf -> __sysconf
 - closedir -> _closedir
 - fparseln -> _fparseln
 - kill -> _kill
 - mkstemp -> _mkstemp
 - reallocarr -> _reallocarr
 - strcasecmp -> _strcasecmp
 - strncasecmp -> _strncasecmp
 - strptime -> _strptime
 - strtok_r -> _strtok_r
 - sysctl -> _sysctl
 - dlopen -> __dlopen
 - dlclose -> __dlclose
 - dlsym -> __dlsym

Sponsored by <The NetBSD Foundation>

Pull up following revision(s) (requested by dholland in ticket #1883):
	common/lib/libc/sys/cpuset.c: revision 1.16
_cpuset_create: initialize size argument for sysctl call.
From PR/43837 by Sandy Snaman.

sync with head

Casts and type changes to fix portability issues.
- int -> size_t
- adjust width of RHS of shift
- adjust widths of types

Add kcpuset(9) - a reworked dynamic CPU set implementation for kernel.
Suitable for use during the early boot.  MD and other implementations
should be replaced with this interface.

Discussed on: tech-kern@

_cpuset_create: initialize size argument for sysctl call.
From PR/43837 by Sandy Snaman.

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

- Add kcpuset_iszero().
- Fix kcpuset_match().

- Add kcpuset_fill(), kcpuset_set() and kcpuset_match().
- KNF while here.

make this work with pcc. The previous construct is not valid c99.

Sync with wrstuden-revivesa-base-2.

Don't convert cpuid_t through int while testing it for being in range.
(Might truncate it, for one thing. Also, if the shift result is < 0 the
demons have already flown out of our nose.)

Fixes some -Wsign-compare warnings.

Add few KASSERTs.

Actually use the version in wrstuden-revivesa-base-1. Compiles better.

Add file missed in merge. Patch will add files, but won't make
new directories.

file cpuset.c was added on branch wrstuden-revivesa on 2008-06-24 04:47:49 +0000

Be consistent in how cpuset_nentries is computed in the kernel and
in user-land.  This fixes the user-land part.  Now "cpuctl identify 0"
gives a result instead of getting EINVAL from the set-affinity syscall.

kcpuset_isset: remove if-check.  It is not reasonable for kernel,
saves few cycles, and it is better for CPU cache.

Separate cpuset and kcpuset, and only use the bits in userland. Requested
by yamt

sync with head.

file cpuset.c was added on branch yamt-pf42 on 2008-06-17 09:13:31 +0000

We don't need any of this in standalone mode.

little more lint

make lint happy

- Add general cpuset macros.
- Use kcpuset name for kernel-only functions.
- Use cpuid_t to specify CPU ID.
- Unify all cpuset users.

API is expected to be stable now.

cpuset_create: check the return value of calloc().

- cpuset_create: pass correct argument to sysctl(3).
- Constify few variables.

cpuset related functions, shared between the kernel and userland.