From a7f290dad32ee34d931561b7943c858fe2aae503 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 11 Nov 2005 21:15:21 +1100 Subject: [PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel 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 Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/asm-offsets.c | 45 +++++++++++++++++++++++++++------------ 1 file changed, 31 insertions(+), 14 deletions(-) (limited to 'arch/powerpc/kernel/asm-offsets.c') diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 8793102..4550eb4 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -37,12 +37,12 @@ #include #include #include +#include #ifdef CONFIG_PPC64 #include #include #include #include -#include #include #endif @@ -251,25 +251,42 @@ int main(void) DEFINE(TASK_SIZE, TASK_SIZE); DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); -#else /* CONFIG_PPC64 */ - /* systemcfg offsets for use by vdso */ - DEFINE(CFG_TB_ORIG_STAMP, offsetof(struct systemcfg, tb_orig_stamp)); - DEFINE(CFG_TB_TICKS_PER_SEC, offsetof(struct systemcfg, tb_ticks_per_sec)); - DEFINE(CFG_TB_TO_XS, offsetof(struct systemcfg, tb_to_xs)); - DEFINE(CFG_STAMP_XSEC, offsetof(struct systemcfg, stamp_xsec)); - DEFINE(CFG_TB_UPDATE_COUNT, offsetof(struct systemcfg, tb_update_count)); - DEFINE(CFG_TZ_MINUTEWEST, offsetof(struct systemcfg, tz_minuteswest)); - DEFINE(CFG_TZ_DSTTIME, offsetof(struct systemcfg, tz_dsttime)); - DEFINE(CFG_SYSCALL_MAP32, offsetof(struct systemcfg, syscall_map_32)); - DEFINE(CFG_SYSCALL_MAP64, offsetof(struct systemcfg, syscall_map_64)); +#endif /* ! CONFIG_PPC64 */ - /* timeval/timezone offsets for use by vdso */ + /* datapage offsets for use by vdso */ + DEFINE(CFG_TB_ORIG_STAMP, offsetof(struct vdso_data, tb_orig_stamp)); + DEFINE(CFG_TB_TICKS_PER_SEC, offsetof(struct vdso_data, tb_ticks_per_sec)); + DEFINE(CFG_TB_TO_XS, offsetof(struct vdso_data, tb_to_xs)); + DEFINE(CFG_STAMP_XSEC, offsetof(struct vdso_data, stamp_xsec)); + DEFINE(CFG_TB_UPDATE_COUNT, offsetof(struct vdso_data, tb_update_count)); + DEFINE(CFG_TZ_MINUTEWEST, offsetof(struct vdso_data, tz_minuteswest)); + DEFINE(CFG_TZ_DSTTIME, offsetof(struct vdso_data, tz_dsttime)); + DEFINE(CFG_SYSCALL_MAP32, offsetof(struct vdso_data, syscall_map_32)); + DEFINE(WTOM_CLOCK_SEC, offsetof(struct vdso_data, wtom_clock_sec)); + DEFINE(WTOM_CLOCK_NSEC, offsetof(struct vdso_data, wtom_clock_nsec)); +#ifdef CONFIG_PPC64 + DEFINE(CFG_SYSCALL_MAP64, offsetof(struct vdso_data, syscall_map_64)); DEFINE(TVAL64_TV_SEC, offsetof(struct timeval, tv_sec)); DEFINE(TVAL64_TV_USEC, offsetof(struct timeval, tv_usec)); DEFINE(TVAL32_TV_SEC, offsetof(struct compat_timeval, tv_sec)); DEFINE(TVAL32_TV_USEC, offsetof(struct compat_timeval, tv_usec)); + DEFINE(TSPC32_TV_SEC, offsetof(struct compat_timespec, tv_sec)); + DEFINE(TSPC32_TV_NSEC, offsetof(struct compat_timespec, tv_nsec)); +#else + DEFINE(TVAL32_TV_SEC, offsetof(struct timeval, tv_sec)); + DEFINE(TVAL32_TV_USEC, offsetof(struct timeval, tv_usec)); + DEFINE(TSPEC32_TV_SEC, offsetof(struct timespec, tv_sec)); + DEFINE(TSPEC32_TV_NSEC, offsetof(struct timespec, tv_nsec)); +#endif + /* timeval/timezone offsets for use by vdso */ DEFINE(TZONE_TZ_MINWEST, offsetof(struct timezone, tz_minuteswest)); DEFINE(TZONE_TZ_DSTTIME, offsetof(struct timezone, tz_dsttime)); -#endif /* CONFIG_PPC64 */ + + /* Other bits used by the vdso */ + DEFINE(CLOCK_REALTIME, CLOCK_REALTIME); + DEFINE(CLOCK_MONOTONIC, CLOCK_MONOTONIC); + DEFINE(NSEC_PER_SEC, NSEC_PER_SEC); + DEFINE(CLOCK_REALTIME_RES, TICK_NSEC); + return 0; } -- cgit v1.1