[dpdk-dev] [PATCH] eal: unmap unneed dpdk VA spaces for legacy mem
Lilijun
jerry.lilijun at huawei.com
Fri Mar 8 06:38:59 CET 2019
Comparing dpdk VA spaces to dpdk 16.11, the dpdk app process's VA spaces increase to above 30G.
Here we can unmap the unneed VA spaces in rte_memseg_list.
Signed-off-by: Lilijun <jerry.lilijun at huawei.com>
---
lib/librte_eal/linuxapp/eal/eal_memory.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 32feb41..56abdd2 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -1626,8 +1626,19 @@ void numa_error(char *where)
if (msl->base_va == NULL)
continue;
/* skip lists where there is at least one page allocated */
- if (msl->memseg_arr.count > 0)
+ if (msl->memseg_arr.count > 0) {
+ if (internal_config.legacy_mem) {
+ struct rte_fbarray *arr = &msl->memseg_arr;
+ int idx = rte_fbarray_find_next_free(arr, 0);
+
+ while (idx >= 0) {
+ void *va = (void*)((char*)msl->base_va + idx * msl->page_sz);
+ munmap(va, msl->page_sz);
+ idx = rte_fbarray_find_next_free(arr, idx + 1);
+ }
+ }
continue;
+ }
/* this is an unused list, deallocate it */
mem_sz = msl->len;
munmap(msl->base_va, mem_sz);
--
1.8.3.1
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