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- Plug a memory leak: free up per-cpu sample buffers at module unload time.

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- Correct a few style nits.
This commit is contained in:
Joseph Koshy 2005-12-26 16:10:00 +00:00
parent bb3020ee66
commit ba8ae2de36
1 changed files with 14 additions and 3 deletions
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17
sys/dev/hwpmc/hwpmc_mod.c
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@ -3954,7 +3954,8 @@ pmc_initialize(void)
}
if (pmc_nsamples <= 0 || pmc_nsamples > 65535) {
(void) printf("hwpmc: tunable nsamples=%d out of range.\n", pmc_nsamples);
(void) printf("hwpmc: tunable nsamples=%d out of range.\n",
pmc_nsamples);
pmc_nsamples = PMC_NSAMPLES;
}
@ -3995,8 +3996,7 @@ pmc_initialize(void)
M_WAITOK|M_ZERO);
sb->ps_read = sb->ps_write = sb->ps_samples;
sb->ps_fence = sb->ps_samples + pmc_nsamples
;
sb->ps_fence = sb->ps_samples + pmc_nsamples;
KASSERT(pmc_pcpu[cpu] != NULL,
("[pmc,%d] cpu=%d Null per-cpu data", __LINE__, cpu));
@ -4147,6 +4147,17 @@ pmc_cleanup(void)
KASSERT(pmc_ss_count == 0,
("[pmc,%d] Global SS count not empty", __LINE__));
/* free the per-cpu sample buffers */
for (cpu = 0; cpu < mp_ncpus; cpu++) {
if (pmc_cpu_is_disabled(cpu))
continue;
KASSERT(pmc_pcpu[cpu]->pc_sb != NULL,
("[pmc,%d] Null cpu sample buffer cpu=%d", __LINE__,
cpu));
FREE(pmc_pcpu[cpu]->pc_sb, M_PMC);
pmc_pcpu[cpu]->pc_sb = NULL;
}
/* do processor dependent cleanup */
PMCDBG(MOD,INI,3, "%s", "md cleanup");
if (md) {