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s390/dump_stack: remove whitespace from arch description

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The arch description provided for the "Hardware name:" contains lots
of extra whitespace due to the way the SYSIB contents are defined
(strings aren't zero terminated).
This looks a bit odd and therefore remove the extra whitespace
characters. This also gives the opportunity to add more information,
if required, without hitting the magic 80 characters per line limit.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2017-03-11 11:58:27 +01:00 committed by Martin Schwidefsky
parent 59808fc819
commit d2f0397425
1 changed files with 24 additions and 5 deletions
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29
arch/s390/kernel/early.c
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@ -231,9 +231,28 @@ static noinline __init void detect_machine_type(void)
S390_lowcore.machine_flags |= MACHINE_FLAG_VM; S390_lowcore.machine_flags |= MACHINE_FLAG_VM;
} }
/* Remove leading, trailing and double whitespace. */
static inline void strim_all(char *str)
{
char *s;
s = strim(str);
if (s != str)
memmove(str, s, strlen(s));
while (*str) {
if (!isspace(*str++))
continue;
if (isspace(*str)) {
s = skip_spaces(str);
memmove(str, s, strlen(s) + 1);
}
}
}
static noinline __init void setup_arch_string(void) static noinline __init void setup_arch_string(void)
{ {
struct sysinfo_1_1_1 *mach = (struct sysinfo_1_1_1 *)&sysinfo_page; struct sysinfo_1_1_1 *mach = (struct sysinfo_1_1_1 *)&sysinfo_page;
char mstr[80];
if (stsi(mach, 1, 1, 1)) if (stsi(mach, 1, 1, 1))
return; return;
@ -241,11 +260,11 @@ static noinline __init void setup_arch_string(void)
EBCASC(mach->type, sizeof(mach->type)); EBCASC(mach->type, sizeof(mach->type));
EBCASC(mach->model, sizeof(mach->model)); EBCASC(mach->model, sizeof(mach->model));
EBCASC(mach->model_capacity, sizeof(mach->model_capacity)); EBCASC(mach->model_capacity, sizeof(mach->model_capacity));
dump_stack_set_arch_desc("%-16.16s %-4.4s %-16.16s %-16.16s (%s)", sprintf(mstr, "%-16.16s %-4.4s %-16.16s %-16.16s",
mach->manufacturer, mach->manufacturer, mach->type,
mach->type, mach->model, mach->model_capacity);
mach->model, strim_all(mstr);
mach->model_capacity, dump_stack_set_arch_desc("%s (%s)", mstr,
MACHINE_IS_LPAR ? "LPAR" : MACHINE_IS_LPAR ? "LPAR" :
MACHINE_IS_VM ? "z/VM" : MACHINE_IS_VM ? "z/VM" :
MACHINE_IS_KVM ? "KVM" : "unknown"); MACHINE_IS_KVM ? "KVM" : "unknown");