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| author | Paul Mackerras <paulus@ozlabs.org> | 2018-03-19 22:46:11 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-23 14:36:45 +0100 |
| commit | c0d64cf9fefd58831ce2cc81b2683bfff3760f7a (patch) | |
| tree | 18d0ecc8d279c88e1059dac28b867732827cc670 /arch/powerpc/kernel/vdso.c | |
| parent | Linux 4.16-rc1 (diff) | |
| download | linux-c0d64cf9fefd58831ce2cc81b2683bfff3760f7a.tar.xz linux-c0d64cf9fefd58831ce2cc81b2683bfff3760f7a.zip | |
powerpc: Use feature bit for RTC presence rather than timebase presence
All PowerPC CPUs other than the original PPC601 have a timebase
register rather than the "real-time clock" (RTC) register that the
PPC601 (and the original POWER and POWER2 CPUs) had. Currently
we have a CPU feature bit to indicate the presence of the timebase,
but it makes more sense to use a bit to indicate the unusual
situation rather than the common situation. This therefore defines
a CPU_FTR_USE_RTC bit in place of the CPU_FTR_USE_TB bit, and
arranges for it to be set on PPC601 systems.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/vdso.c')
| -rw-r--r-- | arch/powerpc/kernel/vdso.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index 22b01a3962f0..b44ec104a5a1 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -99,26 +99,28 @@ static struct vdso_patch_def vdso_patches[] = { CPU_FTR_COHERENT_ICACHE, CPU_FTR_COHERENT_ICACHE, "__kernel_sync_dicache", "__kernel_sync_dicache_p5" }, +#ifdef CONFIG_PPC32 { - CPU_FTR_USE_TB, 0, + CPU_FTR_USE_RTC, CPU_FTR_USE_RTC, "__kernel_gettimeofday", NULL }, { - CPU_FTR_USE_TB, 0, + CPU_FTR_USE_RTC, CPU_FTR_USE_RTC, "__kernel_clock_gettime", NULL }, { - CPU_FTR_USE_TB, 0, + CPU_FTR_USE_RTC, CPU_FTR_USE_RTC, "__kernel_clock_getres", NULL }, { - CPU_FTR_USE_TB, 0, + CPU_FTR_USE_RTC, CPU_FTR_USE_RTC, "__kernel_get_tbfreq", NULL }, { - CPU_FTR_USE_TB, 0, + CPU_FTR_USE_RTC, CPU_FTR_USE_RTC, "__kernel_time", NULL }, +#endif }; /* |