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mem: mark pages as freeable on exit

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When rte_eal_cleanup() is called, it is expected that DPDK will be able to
release all of its memory back to the system. However, if pages are marked
as unfreeable, the pages will not be released back. Fix this to mark all
pages as freeable on calling rte_eal_cleanup(), but only do it for primary
process, as secondaries can come and go.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
This commit is contained in:
Anatoly Burakov 2018-05-31 17:11:47 +01:00 committed by Thomas Monjalon
parent 179f916e88
commit 76480e3885
1 changed files with 17 additions and 0 deletions
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17
lib/librte_eal/linuxapp/eal/eal.c
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@ -1044,9 +1044,26 @@ rte_eal_init(int argc, char **argv)
return fctret;
}
static int
mark_freeable(const struct rte_memseg_list *msl, const struct rte_memseg *ms,
void *arg __rte_unused)
{
/* ms is const, so find this memseg */
struct rte_memseg *found = rte_mem_virt2memseg(ms->addr, msl);
found->flags &= ~RTE_MEMSEG_FLAG_DO_NOT_FREE;
return 0;
}
int __rte_experimental
rte_eal_cleanup(void)
{
/* if we're in a primary process, we need to mark hugepages as freeable
* so that finalization can release them back to the system.
*/
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
rte_memseg_walk(mark_freeable, NULL);
rte_service_finalize();
return 0;
}