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authorRafael J. Wysocki <rjw@sisk.pl>2009-09-14 20:26:05 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2009-09-14 20:26:05 +0200
commitac8d513a6801c8636922ccf4f30211810c9a56ce (patch)
tree83ba584487a6a612c8fcf2563c28c0263df35ba2 /include/linux/nmi.h
parentbf992fa2bc1ad1bb2aeb0bdfadb43f236b9297fd (diff)
parent99bc47067910f7070e65ee318a6dd79a2371f1e5 (diff)
downloadtalos-op-linux-ac8d513a6801c8636922ccf4f30211810c9a56ce.tar.gz
talos-op-linux-ac8d513a6801c8636922ccf4f30211810c9a56ce.zip
Merge branch 'master' into for-linus
Diffstat (limited to 'include/linux/nmi.h')
-rw-r--r--include/linux/nmi.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index 29af2d5df097..b752e807adde 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -28,8 +28,23 @@ static inline void acpi_nmi_disable(void) { }
static inline void acpi_nmi_enable(void) { }
#endif
-#ifndef trigger_all_cpu_backtrace
-#define trigger_all_cpu_backtrace() do { } while (0)
+/*
+ * Create trigger_all_cpu_backtrace() out of the arch-provided
+ * base function. Return whether such support was available,
+ * to allow calling code to fall back to some other mechanism:
+ */
+#ifdef arch_trigger_all_cpu_backtrace
+static inline bool trigger_all_cpu_backtrace(void)
+{
+ arch_trigger_all_cpu_backtrace();
+
+ return true;
+}
+#else
+static inline bool trigger_all_cpu_backtrace(void)
+{
+ return false;
+}
#endif
#endif
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