doc: Update for backtrace feature

Co-authored-by: Odric Roux-Paris <[email protected]>
Co-authored-by: Benny Baumann <[email protected]>
Signed-off-by: Kang-Che Sung <[email protected]>

Author: 3 people

README.md

@@ -102,6 +102,17 @@ To install on the local system run `make install`. By default `make install` ins
     enable hwloc support for CPU affinity; disables affinity support
     - dependency: *libhwloc*
     - default: *no*
+  * `--enable-backtrace`:
+    enable showing backtraces of a process
+    - default: *no*
+    - possible values:
+      - unwind-ptrace: use **libunwind-ptrace** to get backtraces
+  * `--enable-demangling`:
+    enable demangling support for backtraces
+    - default: *check*
+    - possible values:
+      - libiberty: use **libiberty** (GNU) to demangle function names
+      - libdemangle: use **libdemangle** (Solaris) to demangle function names
   * `--enable-static`:
     build a static htop binary; hwloc and delay accounting are not supported
     - default: *no*

htop.1.in

@@ -279,6 +279,10 @@ Pause/resume process updates.
 .B m
 Merge exe, comm and cmdline, where applicable. (This is a toggle key.)
 .TP
+.B b
+Show the backtrace of a process. (This feature requires enabling
+at the compile time.)
+.TP
 .B Ctrl-L
 Refresh: redraw screen and recalculate values.
 .TP