perf-eh_elf/arch/s390/util/header.c

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Merge tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs 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
2018-05-15 19:48:36 +02:00
/*
* Implementation of get_cpuid().
*
* Copyright IBM Corp. 2014, 2018
* Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
* Thomas Richter <tmricht@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (version 2 only)
* as published by the Free Software Foundation.
*/
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "../../util/header.h"
#include "../../util/util.h"
#define SYSINFO_MANU "Manufacturer:"
#define SYSINFO_TYPE "Type:"
#define SYSINFO_MODEL "Model:"
#define SRVLVL_CPUMF "CPU-MF:"
#define SRVLVL_VERSION "version="
#define SRVLVL_AUTHORIZATION "authorization="
#define SYSINFO "/proc/sysinfo"
#define SRVLVL "/proc/service_levels"
int get_cpuid(char *buffer, size_t sz)
{
char *cp, *line = NULL, *line2;
char type[8], model[33], version[8], manufacturer[32], authorization[8];
int tpsize = 0, mdsize = 0, vssize = 0, mfsize = 0, atsize = 0;
int read;
unsigned long line_sz;
size_t nbytes;
FILE *sysinfo;
/*
* Scan /proc/sysinfo line by line and read out values for
* Manufacturer:, Type: and Model:, for example:
* Manufacturer: IBM
* Type: 2964
* Model: 702 N96
* The first word is the Model Capacity and the second word is
* Model (can be omitted). Both words have a maximum size of 16
* bytes.
*/
memset(manufacturer, 0, sizeof(manufacturer));
memset(type, 0, sizeof(type));
memset(model, 0, sizeof(model));
memset(version, 0, sizeof(version));
memset(authorization, 0, sizeof(authorization));
sysinfo = fopen(SYSINFO, "r");
if (sysinfo == NULL)
return -1;
while ((read = getline(&line, &line_sz, sysinfo)) != -1) {
if (!strncmp(line, SYSINFO_MANU, strlen(SYSINFO_MANU))) {
line2 = line + strlen(SYSINFO_MANU);
while ((cp = strtok_r(line2, "\n ", &line2))) {
mfsize += scnprintf(manufacturer + mfsize,
sizeof(manufacturer) - mfsize, "%s", cp);
}
}
if (!strncmp(line, SYSINFO_TYPE, strlen(SYSINFO_TYPE))) {
line2 = line + strlen(SYSINFO_TYPE);
while ((cp = strtok_r(line2, "\n ", &line2))) {
tpsize += scnprintf(type + tpsize,
sizeof(type) - tpsize, "%s", cp);
}
}
if (!strncmp(line, SYSINFO_MODEL, strlen(SYSINFO_MODEL))) {
line2 = line + strlen(SYSINFO_MODEL);
while ((cp = strtok_r(line2, "\n ", &line2))) {
mdsize += scnprintf(model + mdsize, sizeof(model) - mdsize,
"%s%s", model[0] ? "," : "", cp);
}
break;
}
}
fclose(sysinfo);
/* Missing manufacturer, type or model information should not happen */
if (!manufacturer[0] || !type[0] || !model[0])
return -1;
/*
* Scan /proc/service_levels and return the CPU-MF counter facility
* version number and authorization level.
* Optional, does not exist on z/VM guests.
*/
sysinfo = fopen(SRVLVL, "r");
if (sysinfo == NULL)
goto skip_sysinfo;
while ((read = getline(&line, &line_sz, sysinfo)) != -1) {
if (strncmp(line, SRVLVL_CPUMF, strlen(SRVLVL_CPUMF)))
continue;
line2 = line + strlen(SRVLVL_CPUMF);
while ((cp = strtok_r(line2, "\n ", &line2))) {
if (!strncmp(cp, SRVLVL_VERSION,
strlen(SRVLVL_VERSION))) {
char *sep = strchr(cp, '=');
vssize += scnprintf(version + vssize,
sizeof(version) - vssize, "%s", sep + 1);
}
if (!strncmp(cp, SRVLVL_AUTHORIZATION,
strlen(SRVLVL_AUTHORIZATION))) {
char *sep = strchr(cp, '=');
atsize += scnprintf(authorization + atsize,
sizeof(authorization) - atsize, "%s", sep + 1);
}
}
}
fclose(sysinfo);
skip_sysinfo:
free(line);
if (version[0] && authorization[0] )
nbytes = snprintf(buffer, sz, "%s,%s,%s,%s,%s",
manufacturer, type, model, version,
authorization);
else
nbytes = snprintf(buffer, sz, "%s,%s,%s", manufacturer, type,
model);
return (nbytes >= sz) ? -1 : 0;
}
char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
{
char *buf = malloc(128);
if (buf && get_cpuid(buf, 128) < 0)
zfree(&buf);
return buf;
}