sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2025-12-21 12:30:20 +03:00
Code Issues Packages Projects Releases Wiki Activity

[console] Sleep while waiting for user input

Browse Source 
Reduce CPU usage while waiting for user input.  This is particularly
important for virtual machines, where CPU is a shared resource.

Reported-by: Alessandro Salvatori <alessandro@embrane.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2012-07-24 09:52:45 +01:00
parent fb7c022c2c
commit 183a70e8b7
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/core/getkey.c
View File

@@ -24,6 +24,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/process.h> #include <ipxe/process.h>
#include <ipxe/keys.h> #include <ipxe/keys.h>
#include <ipxe/timer.h> #include <ipxe/timer.h>
#include <ipxe/nap.h>
/** @file /** @file
* *
@@ -46,6 +47,7 @@ static int getchar_timeout ( unsigned long timeout ) {
step(); step();
if ( iskey() ) if ( iskey() )
return getchar(); return getchar();
cpu_nap();
} }
return -1; return -1;