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 --- include/asm-powerpc/io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/asm-powerpc/io.h') diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h index 6805efb2cb6..affba7052fb 100644 --- a/include/asm-powerpc/io.h +++ b/include/asm-powerpc/io.h @@ -86,7 +86,7 @@ extern unsigned long pci_dram_offset; */ #ifdef CONFIG_PPC64 -#define IO_SET_SYNC_FLAG() do { get_paca()->io_sync = 1; } while(0) +#define IO_SET_SYNC_FLAG() do { local_paca->io_sync = 1; } while(0) #else #define IO_SET_SYNC_FLAG() #endif -- cgit