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s390_sthyi.2: Replace numeric constant by its name (macro) 

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Eugene Syromyatnikov <evgsyr@gmail.com>
Cc: QingFeng Hao <haoqf@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Alejandro Colomar 2021-05-15 20:20:26 +02:00 committed by Michael Kerrisk
parent cca4e32eb3
commit c6450cf82b
1 changed files with 5 additions and 2 deletions
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7
man2/s390_sthyi.2
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@ -27,6 +27,7 @@
s390_sthyi \- emulate STHYI instruction
.SH SYNOPSIS
.nf
.BR "#include <asm/sthyi.h>" " /* Definition of " STHYI_* " constants */"
.B #include <asm/unistd.h>
.PP
.BI "int s390_sthyi(unsigned long " function_code ", void *" resp_buffer ","
@ -49,7 +50,7 @@ The
argument indicates which function to perform.
The following code(s) are supported:
.TP
0
.B STHYI_FC_CP_IFL_CAP
Return CP (Central Processor) and IFL (Integrated Facility for Linux)
capacity information.
.PP
@ -58,7 +59,9 @@ The
argument specifies the address of a response buffer.
When the
.I function_code
is 0, the buffer must be one page (4K) in size.
is
.BR STHYI_FC_CP_IFL_CAP ,
the buffer must be one page (4K) in size.
If the system call returns 0,
the response buffer will be filled with CPU capacity information.
Otherwise, the response buffer's content is unchanged.