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prov/cxi: Test monitor unsubscribe_on_delete #10688

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3 changes: 2 additions & 1 deletion prov/cxi/Makefile.include
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Original file line number Diff line number Diff line change
Expand Up @@ -129,7 +129,8 @@ nodist_prov_cxi_test_cxitest_SOURCES = \
prov/cxi/test/auth_key.c \
prov/cxi/test/fork.c \
prov/cxi/test/mem_reg.c \
prov/cxi/test/nic.c
prov/cxi/test/nic.c \
prov/cxi/test/mr_cache.c

prov_cxi_test_cxitest_CPPFLAGS = $(AM_CPPFLAGS) $(cxi_CPPFLAGS) \
$(cxitest_CPPFLAGS) $(PTHREAD_CFLAGS)
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121 changes: 121 additions & 0 deletions prov/cxi/test/mr_cache.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,121 @@
/*
* Copyright (c) 2024 Hewlett Packard Enterprise Development LP
* SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0-only
*/

#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <ctype.h>

#include <criterion/criterion.h>
#include <criterion/parameterized.h>
#include <pthread.h>

#include "libcxi/libcxi.h"
#include "cxip.h"
#include "cxip_test_common.h"

#define SETENV_OVERWRITE 1

TestSuite(mr_cache, .timeout = CXIT_DEFAULT_TIMEOUT);

Test(mr_cache, cache_full)
{
static struct {
const char *name;
const char *value;
} envs[] = {
{ .name = "FI_MR_CACHE_MONITOR", .value = "kdreg2", },
{ .name = "FI_MR_CACHE_MAX_COUNT", .value = "4", },
};
struct {
void *addr;
struct fid_mr *mr;
} *region_data;
size_t i;
int ret;
long page_size;
unsigned long num_regions, total_regions;
struct ofi_mr_cache *cache;
struct cxip_domain *cxip_dom;

/* setup the environment */
for (i = 0; i < ARRAY_SIZE(envs); i++) {
ret = setenv(envs[i].name, envs[i].value, SETENV_OVERWRITE);
cr_assert_eq(ret, 0, "Failed to set %s to %s: %d",
envs[i].name, envs[i].value, errno);
}

/* allocate the memory regions */
page_size = sysconf(_SC_PAGESIZE);
cr_assert(page_size > 0,
"sysconf(_SC_PAGESIZE) return %ld: errno = %d", page_size, errno);

ret = sscanf(getenv("FI_MR_CACHE_MAX_COUNT"), "%lu", &num_regions);
cr_assert_eq(ret, 1, "Failed to get number of regions: %d %d:%s",
ret, errno, strerror(errno));

/* one extra to push one out of the cache */
total_regions = num_regions + 1;
region_data = calloc(total_regions, sizeof(*region_data));
cr_assert_not_null(region_data);

for (i = 0; i < total_regions; i++) {
region_data[i].addr = mmap(NULL, page_size,
PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE,
-1, 0);
cr_assert_not_null(region_data[i].addr);
}

/* create the domain */
cxit_setup_domain();
cxit_create_domain();

/* Register the max number of regions */
for (i = 0; i < num_regions; i++) {
ret = fi_mr_reg(cxit_domain, region_data[i].addr,
page_size, FI_READ | FI_WRITE,
0, 0, 0, &region_data[i].mr, NULL);
cr_assert_eq(ret, FI_SUCCESS,
"fi_mr_reg failed for region %lu: %d", i, ret);
}

/* See that the cache is full */
cxip_dom = container_of(cxit_domain, struct cxip_domain,
util_domain.domain_fid);
cache = &cxip_dom->iomm;
cr_assert(cache->cached_cnt == cache->cached_max_cnt,
"Cache is not full: %zu != %zu",
cache->cached_cnt, cache->cached_max_cnt);
cr_assert(cache->uncached_cnt == 0,
"Cache has uncached entries: %zu",
cache->uncached_cnt);

/* release the registrations, this should put them on the LRU list */
for(i = 0; i < num_regions; i++) {
ret = fi_close(&region_data[i].mr->fid);
cr_assert_eq(ret, FI_SUCCESS,
"Failed to close mr %zu: %d",
i, ret);
}

/* Register one more, this should push one off LRU list */
ret = fi_mr_reg(cxit_domain, region_data[num_regions].addr,
page_size, FI_READ | FI_WRITE,
0, 0, 0, &region_data[num_regions].mr, NULL);
cr_assert_eq(ret, FI_SUCCESS,
"fi_mr_reg failed for region %lu: %d", num_regions, ret);

/* Cache should remain full */
cr_assert(cache->cached_cnt == cache->cached_max_cnt,
"Cache is not full: %zu != %zu",
cache->cached_cnt, cache->cached_max_cnt);
cr_assert(cache->uncached_cnt == 0,
"Cache has uncached entries: %zu",
cache->uncached_cnt);

cxit_teardown_domain();
}
3 changes: 3 additions & 0 deletions prov/cxi/test/test.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -149,6 +149,8 @@ fork_safe_kdreg2_test=(
unlimited_triggered_ops_test=(
"FI_CXI_ENABLE_TRIG_OP_LIMIT=0 ./cxitest -j 1 --verbose --filter=\"deferred_work_trig_op_limit/*\" --tap=cxitest-disable-trig-op-limit.tap")

mr_cache_test=("./cxitest --verbose --tap=cxitest-mr_cache_test.tap --filter=\"mr_cache/*\" -j 1")

long_test_suite=(
"basic_test"
"swget_test"
Expand All @@ -174,6 +176,7 @@ long_test_suite=(
"fork_safe_memhooks_test"
"fork_safe_kdreg2_test"
"unlimited_triggered_ops_test"
"mr_cache_test"
)

# ################################################################
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