mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
![Benjamin Herrenschmidt](/assets/img/avatar_default.png)
This patch moves the vdso's to arch/powerpc, adds support for the 32 bits vdso to the 32 bits kernel, rename systemcfg (finally !), and adds some new (still untested) routines to both vdso's: clock_gettime() with support for CLOCK_REALTIME and CLOCK_MONOTONIC, clock_getres() (same clocks) and get_tbfreq() for glibc to retreive the timebase frequency. Tom,Steve: The implementation of get_tbfreq() I've done for 32 bits returns a long long (r3, r4) not a long. This is such that if we ever add support for >4Ghz timebases on ppc32, the userland interface won't have to change. I have tested gettimeofday() using some glibc patches in both ppc32 and ppc64 kernels using 32 bits userland (I haven't had a chance to test a 64 bits userland yet, but the implementation didn't change and was tested earlier). I haven't tested yet the new functions. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
19 lines
508 B
C
19 lines
508 B
C
#ifndef _ASM_POWERPC_AUXVEC_H
|
|
#define _ASM_POWERPC_AUXVEC_H
|
|
|
|
/*
|
|
* We need to put in some extra aux table entries to tell glibc what
|
|
* the cache block size is, so it can use the dcbz instruction safely.
|
|
*/
|
|
#define AT_DCACHEBSIZE 19
|
|
#define AT_ICACHEBSIZE 20
|
|
#define AT_UCACHEBSIZE 21
|
|
/* A special ignored type value for PPC, for glibc compatibility. */
|
|
#define AT_IGNOREPPC 22
|
|
|
|
/* The vDSO location. We have to use the same value as x86 for glibc's
|
|
* sake :-)
|
|
*/
|
|
#define AT_SYSINFO_EHDR 33
|
|
|
|
#endif
|