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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-02-17 23:24:03 -0800
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-03-29 23:35:59 -0700
commit7fd7d83d49914f03aefffba6aee09032fcd54cce (patch)
tree8c9f5b95f6b63b5d28887f47d92a6c79139eac5f /include/asm-generic
parentb8bcfe997e46150fedcc3f5b26b846400122fdd9 (diff)
downloadop-kernel-dev-7fd7d83d49914f03aefffba6aee09032fcd54cce.zip
op-kernel-dev-7fd7d83d49914f03aefffba6aee09032fcd54cce.tar.gz
x86/pvops: replace arch_enter_lazy_cpu_mode with arch_start_context_switch
Impact: simplification, prepare for later changes Make lazy cpu mode more specific to context switching, so that it makes sense to do more context-switch specific things in the callbacks. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/pgtable.h21
1 files changed, 11 insertions, 10 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 8e6d0ca..922f036 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -280,17 +280,18 @@ static inline void ptep_modify_prot_commit(struct mm_struct *mm,
#endif
/*
- * A facility to provide batching of the reload of page tables with the
- * actual context switch code for paravirtualized guests. By convention,
- * only one of the lazy modes (CPU, MMU) should be active at any given
- * time, entry should never be nested, and entry and exits should always
- * be paired. This is for sanity of maintaining and reasoning about the
- * kernel code.
+ * A facility to provide batching of the reload of page tables and
+ * other process state with the actual context switch code for
+ * paravirtualized guests. By convention, only one of the batched
+ * update (lazy) modes (CPU, MMU) should be active at any given time,
+ * entry should never be nested, and entry and exits should always be
+ * paired. This is for sanity of maintaining and reasoning about the
+ * kernel code. In this case, the exit (end of the context switch) is
+ * in architecture-specific code, and so doesn't need a generic
+ * definition.
*/
-#ifndef __HAVE_ARCH_ENTER_LAZY_CPU_MODE
-#define arch_enter_lazy_cpu_mode() do {} while (0)
-#define arch_leave_lazy_cpu_mode() do {} while (0)
-#define arch_flush_lazy_cpu_mode() do {} while (0)
+#ifndef __HAVE_ARCH_START_CONTEXT_SWITCH
+#define arch_start_context_switch() do {} while (0)
#endif
#ifndef __HAVE_PFNMAP_TRACKING
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