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
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/*
|
|
* Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
*
|
|
* Refactored from builtin-top.c, see that files for further copyright notes.
|
|
*
|
|
* Released under the GPL v2. (and only v2, not any later version)
|
|
*/
|
|
|
|
#include "cpumap.h"
|
|
#include "event.h"
|
|
#include "evlist.h"
|
|
#include "evsel.h"
|
|
#include "parse-events.h"
|
|
#include "symbol.h"
|
|
#include "top.h"
|
|
#include <inttypes.h>
|
|
|
|
#define SNPRINTF(buf, size, fmt, args...) \
|
|
({ \
|
|
size_t r = snprintf(buf, size, fmt, ## args); \
|
|
r > size ? size : r; \
|
|
})
|
|
|
|
size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
|
|
{
|
|
float samples_per_sec;
|
|
float ksamples_per_sec;
|
|
float esamples_percent;
|
|
struct record_opts *opts = &top->record_opts;
|
|
struct target *target = &opts->target;
|
|
size_t ret = 0;
|
|
|
|
if (top->samples) {
|
|
samples_per_sec = top->samples / top->delay_secs;
|
|
ksamples_per_sec = top->kernel_samples / top->delay_secs;
|
|
esamples_percent = (100.0 * top->exact_samples) / top->samples;
|
|
} else {
|
|
samples_per_sec = ksamples_per_sec = esamples_percent = 0.0;
|
|
}
|
|
|
|
if (!perf_guest) {
|
|
float ksamples_percent = 0.0;
|
|
|
|
if (samples_per_sec)
|
|
ksamples_percent = (100.0 * ksamples_per_sec) /
|
|
samples_per_sec;
|
|
ret = SNPRINTF(bf, size,
|
|
" PerfTop:%8.0f irqs/sec kernel:%4.1f%%"
|
|
" exact: %4.1f%% [", samples_per_sec,
|
|
ksamples_percent, esamples_percent);
|
|
} else {
|
|
float us_samples_per_sec = top->us_samples / top->delay_secs;
|
|
float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs;
|
|
float guest_us_samples_per_sec = top->guest_us_samples / top->delay_secs;
|
|
|
|
ret = SNPRINTF(bf, size,
|
|
" PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%"
|
|
" guest kernel:%4.1f%% guest us:%4.1f%%"
|
|
" exact: %4.1f%% [", samples_per_sec,
|
|
100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
|
|
samples_per_sec)),
|
|
100.0 - (100.0 * ((samples_per_sec - us_samples_per_sec) /
|
|
samples_per_sec)),
|
|
100.0 - (100.0 * ((samples_per_sec -
|
|
guest_kernel_samples_per_sec) /
|
|
samples_per_sec)),
|
|
100.0 - (100.0 * ((samples_per_sec -
|
|
guest_us_samples_per_sec) /
|
|
samples_per_sec)),
|
|
esamples_percent);
|
|
}
|
|
|
|
if (top->evlist->nr_entries == 1) {
|
|
struct perf_evsel *first = perf_evlist__first(top->evlist);
|
|
ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
|
|
(uint64_t)first->attr.sample_period,
|
|
opts->freq ? "Hz" : "");
|
|
}
|
|
|
|
ret += SNPRINTF(bf + ret, size - ret, "%s", perf_evsel__name(top->sym_evsel));
|
|
|
|
ret += SNPRINTF(bf + ret, size - ret, "], ");
|
|
|
|
if (target->pid)
|
|
ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %s",
|
|
target->pid);
|
|
else if (target->tid)
|
|
ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %s",
|
|
target->tid);
|
|
else if (target->uid_str != NULL)
|
|
ret += SNPRINTF(bf + ret, size - ret, " (uid: %s",
|
|
target->uid_str);
|
|
else
|
|
ret += SNPRINTF(bf + ret, size - ret, " (all");
|
|
|
|
if (target->cpu_list)
|
|
ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)",
|
|
top->evlist->cpus->nr > 1 ? "s" : "",
|
|
target->cpu_list);
|
|
else {
|
|
if (target->tid)
|
|
ret += SNPRINTF(bf + ret, size - ret, ")");
|
|
else
|
|
ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)",
|
|
top->evlist->cpus->nr,
|
|
top->evlist->cpus->nr > 1 ? "s" : "");
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void perf_top__reset_sample_counters(struct perf_top *top)
|
|
{
|
|
top->samples = top->us_samples = top->kernel_samples =
|
|
top->exact_samples = top->guest_kernel_samples =
|
|
top->guest_us_samples = 0;
|
|
}
|