trace: profile all if conditionals

[safe/jmp/linux-2.6] / kernel / trace / Kconfig

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 7e35487..61e8cca 100644 (file)
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -173,6 +173,22 @@ config TRACE_BRANCH_PROFILING
 
          Say N if unsure.
 
+config PROFILE_ALL_BRANCHES
+       bool "Profile all if conditionals"
+       depends on TRACE_BRANCH_PROFILING
+       help
+         This tracer profiles all branch conditions. Every if ()
+         taken in the kernel is recorded whether it hit or miss.
+         The results will be displayed in:
+
+         /debugfs/tracing/profile_branch
+
+         This configuration, when enabled, will impose a great overhead
+         on the system. This should only be enabled when the system
+         is to be analyzed
+
+         Say N if unsure.
+
 config TRACING_BRANCHES
        bool
        help