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Remove unnecessary usage of memory barriers when dealing with

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pmc_cpumask.

Discussed with:	fabient
This commit is contained in:
Attilio Rao 2011-04-30 22:33:11 +00:00
parent 3121f5347e
commit 5c5b0e93fa
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/projects/largeSMP/; revision=221279
1 changed files with 3 additions and 3 deletions
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6
sys/dev/hwpmc/hwpmc_mod.c
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@ -4083,7 +4083,7 @@ pmc_process_interrupt(int cpu, struct pmc *pm, struct trapframe *tf,
done: done:
/* mark CPU as needing processing */ /* mark CPU as needing processing */
atomic_set_rel_int(&pmc_cpumask, (1 << cpu)); atomic_set_int(&pmc_cpumask, (1 << cpu));
return (error); return (error);
} }
@ -4193,7 +4193,7 @@ pmc_process_samples(int cpu)
break; break;
if (ps->ps_nsamples == PMC_SAMPLE_INUSE) { if (ps->ps_nsamples == PMC_SAMPLE_INUSE) {
/* Need a rescan at a later time. */ /* Need a rescan at a later time. */
atomic_set_rel_int(&pmc_cpumask, (1 << cpu)); atomic_set_int(&pmc_cpumask, (1 << cpu));
break; break;
} }
@ -4782,7 +4782,7 @@ pmc_cleanup(void)
PMCDBG(MOD,INI,0, "%s", "cleanup"); PMCDBG(MOD,INI,0, "%s", "cleanup");
/* switch off sampling */ /* switch off sampling */
atomic_store_rel_int(&pmc_cpumask, 0); atomic_store_int(&pmc_cpumask, 0);
pmc_intr = NULL; pmc_intr = NULL;
sx_xlock(&pmc_sx); sx_xlock(&pmc_sx);