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When PLATFORM_SMP is enabled, check if tunable hw.ncpu is set and valid

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(>= 1 and <= real ncores) and set mp_ncpus to it.

Approved by:	andrew (mentor)
Differential Revision:	https://reviews.freebsd.org/D6151
This commit is contained in:
Emmanuel Vadot 2016-05-10 19:11:25 +00:00
parent e49345fa3d
commit 3a0f677c9d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=299383
1 changed files with 8 additions and 0 deletions
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8
sys/arm/arm/platform.c
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@ -209,8 +209,16 @@ platform_delay(int usec, void *arg __unused)
void
platform_mp_setmaxid(void)
{
int ncpu;
PLATFORM_MP_SETMAXID(plat_obj);
if (TUNABLE_INT_FETCH("hw.ncpu", &ncpu)) {
if (ncpu >= 1 && ncpu <= mp_ncpus) {
mp_ncpus = ncpu;
mp_maxid = ncpu - 1;
}
}
}
void