kernel: remove non-existent config symbols

[openwrt/staging/jow.git] / config / Config-kernel.in

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index f5b42b71ee43c6c90bc6b3a540cd0037a7aecc79..07d65bc465c5ef7063372e49955968fb96d64ee2 100644 (file)
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -24,11 +24,6 @@ config KERNEL_PRINTK
        bool "Enable support for printk"
        default y
 
-config KERNEL_CRASHLOG
-       bool "Crash logging"
-       depends on !(arm || powerpc || sparc || TARGET_uml || i386 || x86_64)
-       default y
-
 config KERNEL_SWAP
        bool "Support for paging of anonymous memory (swap)"
        default y if !SMALL_FLASH
@@ -170,9 +165,10 @@ config KERNEL_KASAN_EXTRA
          compile time.
          https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 has more
 
-CONFIG KERNEL_KASAN_VMALLOC
+config KERNEL_KASAN_VMALLOC
        bool "Back mappings in vmalloc space with real shadow memory"
        depends on KERNEL_KASAN
+       help
          By default, the shadow region for vmalloc space is the read-only
          zero page. This means that KASAN cannot detect errors involving
          vmalloc space.
@@ -348,6 +344,19 @@ config KERNEL_PREEMPT_TRACER
          enabled. This option and the irqs-off timing option can be
          used together or separately.)
 
+config KERNEL_HIST_TRIGGERS
+       bool "Histogram triggers"
+       depends on KERNEL_FTRACE
+       help
+         Hist triggers allow one or more arbitrary trace event fields to be
+         aggregated into hash tables and dumped to stdout by reading a
+         debugfs/tracefs file. They're useful for gathering quick and dirty
+         (though precise) summaries of event activity as an initial guide for
+         further investigation using more advanced tools.
+
+         Inter-event tracing of quantities such as latencies is also
+         supported using hist triggers under this option.
+
 config KERNEL_DEBUG_KERNEL
        bool
        default n