suggest -1 for perf_event_paranoid

Author: sylvestre

README.md

@@ -13,7 +13,7 @@ samply record ./my-application my-arguments
 On Linux, samply uses perf events. You can grant temporary access by running:
 
 ```sh
-echo '1' | sudo tee /proc/sys/kernel/perf_event_paranoid
+echo '-1' | sudo tee /proc/sys/kernel/perf_event_paranoid
 ```
 
 ## Installation

samply/README.md

@@ -13,7 +13,7 @@ samply record ./my-application my-arguments
 On Linux, samply uses perf events. You can grant temporary access by running:
 
 ```sh
-echo '1' | sudo tee /proc/sys/kernel/perf_event_paranoid
+echo '-1' | sudo tee /proc/sys/kernel/perf_event_paranoid
 ```
 
 Visit [the git repository](https://github.com/mstange/samply/) for more information.

samply/src/linux/profiler.rs

@@ -405,7 +405,7 @@ fn init_profiler(
                     eprintln!("In order for samply to work with a non-root user, this level needs");
                     eprintln!("to be set to 1 or lower.");
                     eprintln!("You can execute the following command and then try again:");
-                    eprintln!("    echo '1' | sudo tee /proc/sys/kernel/perf_event_paranoid");
+                    eprintln!("    echo '-1' | sudo tee /proc/sys/kernel/perf_event_paranoid");
                     eprintln!();
                     std::process::exit(1);
                 }