Cachectl Syscall - Revision history

Ralf at 08:06, 11 September 2012

2012-09-11T08:06:49Z

Alec v at 08:08, 26 August 2005

2005-08-26T08:08:33Z

Ralf at 11:20, 25 June 2005

2005-06-25T11:20:06Z

Ralf: Yeah, return values ...

2005-06-25T11:19:36Z

Yeah, return values ...

Ralf: Document cachectl(2) syscall

2005-06-25T11:15:45Z

Document cachectl(2) syscall

New page

== NAME ==
'''cachectl''' - control cachebility of memory areas

== SYNOPSIS ==
<code><pre>
#include <sys/cachectl.h>

int cachectl (void *addr, size_t nbytes, int op);
</pre></code>

== DESCRIPTION ==
The cachectl syscall allows a process to control cachebility of it's address space at page granularity. Cachability is initially choosen by a heuristc at [[Mmap_Syscall|mmap]] mmap time. The op parameter may be one of:

; CACHEABLE : Make the indicated area cacheable
; UNCACHEABLE : Make the indicated area uncacheable

== HISTORY ==
A cachectl syscall appeared in RISC/OS and later in IRIX. It differs in taking an int for the nbytes argument.

== BUGS ==
Even though the syscall is part of the kernel's syscall interface since the earliest days of Linux it has never actually been implemented since the defaults used by mmap seem to work sufficiently well.

== See also ==
* [[Cacheflush syscall]]

← Older revision		Revision as of 08:06, 11 September 2012
Line 27:		Line 27:
	== See also ==		== See also ==
	* [[Cacheflush_Syscall]]		* [[Cacheflush_Syscall]]
		+	* [[syscall]]

← Older revision		Revision as of 08:08, 26 August 2005
Line 26:		Line 26:

	== See also ==		== See also ==
−	* [[~~Cacheflush syscall~~]]	+	* [[Cacheflush_Syscall]]

← Older revision		Revision as of 11:20, 25 June 2005
Line 1:		Line 1:
		+	__NOTOC__
	== NAME ==		== NAME ==
	'''cachectl''' - control cachebility of memory areas		'''cachectl''' - control cachebility of memory areas

@@ Line 14: / Line 14: @@
 ; CACHEABLE : Make the indicated area cacheable
 ; UNCACHEABLE : Make the indicated area uncacheable
 == HISTORY ==