Adjustments to the documentation
Fix a few typos
Add missing link
Reword update() description sentence
diff --git a/docs/reference_guide.md b/docs/reference_guide.md
index 0e51404..c2582fd 100644
--- a/docs/reference_guide.md
+++ b/docs/reference_guide.md
@@ -7,7 +7,7 @@
## Contents
- [BPF C](#bpf-c)
- - [Events & Arguments](#events-arguments)
+ - [Events & Arguments](#events--arguments)
- [1. kprobes](#1-kprobes)
- [2. kretprobes](#2-kretprobes)
- [3. Tracepoints](#3-tracepoints)
@@ -501,7 +501,7 @@
Syntax: ```map.update(&key, &val)```
-Set the key to equal the value in the second argument.
+Associate the value in the second argument to the key, overwriting any previous value.
Examples in situ:
[search /examples](https://github.com/iovisor/bcc/search?q=update+path%3Aexamples&type=Code),
diff --git a/docs/tutorial_bcc_python_developer.md b/docs/tutorial_bcc_python_developer.md
index a1a696c..3aac465 100644
--- a/docs/tutorial_bcc_python_developer.md
+++ b/docs/tutorial_bcc_python_developer.md
@@ -36,7 +36,7 @@
1. ```bpf_trace_printk()```: A simple kernel facility for printf() to the common trace_pipe (/sys/kernel/debug/tracing/trace_pipe). This is ok for some quick examples, but has limitations: 3 args max, 1 %s only, and trace_pipe is globally shared, so concurrent programs will have clashing output. A better interface is via BPF_PERF_OUTPUT(), covered later.
-1. ```return 0;```: Necessary formality (if you want to know why, see #139).
+1. ```return 0;```: Necessary formality (if you want to know why, see [#139](https://github.com/iovisor/bcc/issues/139)).
1. ```.trace_print()```: A bcc routine that reads trace_pipe and prints the output.
@@ -88,7 +88,7 @@
print("%-18.9f %-16s %-6d %s" % (ts, task, pid, msg))
```
-This is simalar to hello_world.py, and traces new processes via sys_clone() again, but has a few more things to learn:
+This is similar to hello_world.py, and traces new processes via sys_clone() again, but has a few more things to learn:
1. ```prog =```: This time we declare the C program as a variable, and later refer to it. This is useful if you want to add some string substitutions based on command line arguments.
@@ -163,7 +163,7 @@
1. ```key = 0```: We'll only store one key/value pair in this hash, where the key is hardwired to zero.
1. ```last.lookup(&key)```: Lookup the key in the hash, and return a pointer to its value if it exists, else NULL. We pass the key in as an address to a pointer.
1. ```last.delete(&key)```: Delete the key from the hash. This is currently required because of [a kernel bug in `.update()`](https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=a6ed3ea65d9868fdf9eff84e6fe4f666b8d14b02).
-1. ```last.update(&key)```: Set the key to equal the value in the 2nd argument. This records the timestamp.
+1. ```last.update(&key, &ts)```: Associate the value in the 2nd argument to the key, overwriting any previous value. This records the timestamp.
### Lesson 5. sync_count.py
@@ -183,7 +183,7 @@
[...]
```
-And a code snippit:
+And a code snippet:
```Python
[...]