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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-09-19 18:38:25 (GMT) |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-09-19 18:38:25 (GMT) |
commit | f15f41383d466860f8b22f669da8c841f8d73c3b (patch) | |
tree | 527f4d443832deb11e592d6a7f33edd4b726b1ac /arch | |
parent | dbe3ed1c078c193be34326728d494c5c4bc115e2 (diff) | |
parent | c27da339698145a9383e052c1070a950d30da478 (diff) | |
download | linux-f15f41383d466860f8b22f669da8c841f8d73c3b.tar.xz |
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Fix timekeeping on PowerPC 601
[POWERPC] Don't expose clock vDSO functions when CPU has no timebase
[POWERPC] spusched: Fix null pointer dereference in find_victim
Diffstat (limited to 'arch')
-rw-r--r-- | arch/powerpc/kernel/time.c | 8 | ||||
-rw-r--r-- | arch/powerpc/kernel/vdso.c | 12 | ||||
-rw-r--r-- | arch/powerpc/platforms/cell/spufs/sched.c | 4 |
3 files changed, 19 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 727a669..c627cf8 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -239,7 +239,7 @@ static void snapshot_tb_and_purr(void *data) struct cpu_purr_data *p = &__get_cpu_var(cpu_purr_data); local_irq_save(flags); - p->tb = mftb(); + p->tb = get_tb_or_rtc(); p->purr = mfspr(SPRN_PURR); wmb(); p->initialized = 1; @@ -317,7 +317,7 @@ static void snapshot_purr(void) */ void snapshot_timebase(void) { - __get_cpu_var(last_jiffy) = get_tb(); + __get_cpu_var(last_jiffy) = get_tb_or_rtc(); snapshot_purr(); } @@ -684,6 +684,8 @@ void timer_interrupt(struct pt_regs * regs) write_seqlock(&xtime_lock); tb_next_jiffy = tb_last_jiffy + tb_ticks_per_jiffy; + if (__USE_RTC() && tb_next_jiffy >= 1000000000) + tb_next_jiffy -= 1000000000; if (per_cpu(last_jiffy, cpu) >= tb_next_jiffy) { tb_last_jiffy = tb_next_jiffy; do_timer(1); @@ -977,7 +979,7 @@ void __init time_init(void) tb_to_ns_scale = scale; tb_to_ns_shift = shift; /* Save the current timebase to pretty up CONFIG_PRINTK_TIME */ - boot_tb = get_tb(); + boot_tb = get_tb_or_rtc(); tm = get_boot_time(); diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index cef01e4..213fa31 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -98,6 +98,18 @@ static struct vdso_patch_def vdso_patches[] = { CPU_FTR_USE_TB, 0, "__kernel_gettimeofday", NULL }, + { + CPU_FTR_USE_TB, 0, + "__kernel_clock_gettime", NULL + }, + { + CPU_FTR_USE_TB, 0, + "__kernel_clock_getres", NULL + }, + { + CPU_FTR_USE_TB, 0, + "__kernel_get_tbfreq", NULL + }, }; /* diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c index c784edd..5bebe7f 100644 --- a/arch/powerpc/platforms/cell/spufs/sched.c +++ b/arch/powerpc/platforms/cell/spufs/sched.c @@ -579,7 +579,7 @@ static struct spu *find_victim(struct spu_context *ctx) list_for_each_entry(spu, &cbe_spu_info[node].spus, cbe_list) { struct spu_context *tmp = spu->ctx; - if (tmp->prio > ctx->prio && + if (tmp && tmp->prio > ctx->prio && (!victim || tmp->prio > victim->prio)) victim = spu->ctx; } @@ -611,9 +611,9 @@ static struct spu *find_victim(struct spu_context *ctx) mutex_lock(&cbe_spu_info[node].list_mutex); cbe_spu_info[node].nr_active--; + spu_unbind_context(spu, victim); mutex_unlock(&cbe_spu_info[node].list_mutex); - spu_unbind_context(spu, victim); victim->stats.invol_ctx_switch++; spu->stats.invol_ctx_switch++; mutex_unlock(&victim->state_mutex); |