16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "tests.h"
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#include <stdio.h>
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#include "cpumap.h"
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#include "event.h"
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#include <string.h>
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#include <linux/bitops.h>
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#include "debug.h"
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struct machine;
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static int process_event_mask(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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struct cpu_map_event *map_event = &event->cpu_map;
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struct cpu_map_mask *mask;
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struct cpu_map_data *data;
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struct cpu_map *map;
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int i;
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data = &map_event->data;
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TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__MASK);
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mask = (struct cpu_map_mask *)data->data;
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TEST_ASSERT_VAL("wrong nr", mask->nr == 1);
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for (i = 0; i < 20; i++) {
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TEST_ASSERT_VAL("wrong cpu", test_bit(i, mask->mask));
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}
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map = cpu_map__new_data(data);
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TEST_ASSERT_VAL("wrong nr", map->nr == 20);
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for (i = 0; i < 20; i++) {
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TEST_ASSERT_VAL("wrong cpu", map->map[i] == i);
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}
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cpu_map__put(map);
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return 0;
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}
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static int process_event_cpus(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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struct cpu_map_event *map_event = &event->cpu_map;
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struct cpu_map_entries *cpus;
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struct cpu_map_data *data;
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struct cpu_map *map;
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data = &map_event->data;
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TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__CPUS);
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cpus = (struct cpu_map_entries *)data->data;
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TEST_ASSERT_VAL("wrong nr", cpus->nr == 2);
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TEST_ASSERT_VAL("wrong cpu", cpus->cpu[0] == 1);
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TEST_ASSERT_VAL("wrong cpu", cpus->cpu[1] == 256);
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map = cpu_map__new_data(data);
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TEST_ASSERT_VAL("wrong nr", map->nr == 2);
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TEST_ASSERT_VAL("wrong cpu", map->map[0] == 1);
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TEST_ASSERT_VAL("wrong cpu", map->map[1] == 256);
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TEST_ASSERT_VAL("wrong refcnt", refcount_read(&map->refcnt) == 1);
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cpu_map__put(map);
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return 0;
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}
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int test__cpu_map_synthesize(struct test *test __maybe_unused, int subtest __maybe_unused)
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{
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struct cpu_map *cpus;
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/* This one is better stores in mask. */
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cpus = cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19");
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TEST_ASSERT_VAL("failed to synthesize map",
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!perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL));
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cpu_map__put(cpus);
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/* This one is better stores in cpu values. */
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cpus = cpu_map__new("1,256");
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TEST_ASSERT_VAL("failed to synthesize map",
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!perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL));
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cpu_map__put(cpus);
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return 0;
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}
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static int cpu_map_print(const char *str)
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{
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struct cpu_map *map = cpu_map__new(str);
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char buf[100];
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if (!map)
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return -1;
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cpu_map__snprint(map, buf, sizeof(buf));
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return !strcmp(buf, str);
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}
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int test__cpu_map_print(struct test *test __maybe_unused, int subtest __maybe_unused)
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{
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,5"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3,5,7,9,11,13,15,17,19,21-40"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("2-5"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1-10,12-20,22-30,32-40"));
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return 0;
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}
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