From 048c8bc90e53bf1f5feec020a7d482da94894e93 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Wed, 1 Nov 2006 05:44:54 +1100 Subject: [POWERPC] ppc64: support CONFIG_DEBUG_PREEMPT Add CONFIG_DEBUG_PREEMPT support to ppc64: it was useful for testing get_paca() preemption. Cheat a little, just use debug_smp_processor_id() in the debug version of get_paca(): it contains all the right checks and reporting, though get_paca() doesn't really use smp_processor_id(). Use local_paca for what might have been called __raw_get_paca(). Silence harmless warnings from io.h and lparcfg.c with local_paca - it is okay for iseries_lparcfg_data to be referencing shared_proc with preemption enabled: all cpus should show the same value for shared_proc. Why do other architectures need TRACE_IRQFLAGS_SUPPORT for DEBUG_PREEMPT? I don't know, ppc64 appears to get along fine without it. Signed-off-by: Hugh Dickins Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/lparcfg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c index 6444eaa30a2..ff781b2edde 100644 --- a/arch/powerpc/kernel/lparcfg.c +++ b/arch/powerpc/kernel/lparcfg.c @@ -77,7 +77,7 @@ static int iseries_lparcfg_data(struct seq_file *m, void *v) int processors, max_processors; unsigned long purr = get_purr(); - shared = (int)(get_lppaca()->shared_proc); + shared = (int)(local_paca->lppaca_ptr->shared_proc); seq_printf(m, "system_active_processors=%d\n", (int)HvLpConfig_getSystemPhysicalProcessors()); -- cgit v1.2.3