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fprobe, samples: Add module parameter descriptions

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Add module parameter descriptions for the fprobe_example module.

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/165602349520.56016.1314423560740428008.stgit@devnote2
This commit is contained in:
Masami Hiramatsu (Google) 2022-06-24 07:31:35 +09:00 committed by Andrii Nakryiko
parent a2b1a5d40b
commit 179a93f74b
1 changed files with 7 additions and 0 deletions
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7
samples/fprobe/fprobe_example.c
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@ -25,12 +25,19 @@ static unsigned long nhit;
static char symbol[MAX_SYMBOL_LEN] = "kernel_clone"; static char symbol[MAX_SYMBOL_LEN] = "kernel_clone";
module_param_string(symbol, symbol, sizeof(symbol), 0644); module_param_string(symbol, symbol, sizeof(symbol), 0644);
MODULE_PARM_DESC(symbol, "Probed symbol(s), given by comma separated symbols or a wildcard pattern.");
static char nosymbol[MAX_SYMBOL_LEN] = ""; static char nosymbol[MAX_SYMBOL_LEN] = "";
module_param_string(nosymbol, nosymbol, sizeof(nosymbol), 0644); module_param_string(nosymbol, nosymbol, sizeof(nosymbol), 0644);
MODULE_PARM_DESC(nosymbol, "Not-probed symbols, given by a wildcard pattern.");
static bool stackdump = true; static bool stackdump = true;
module_param(stackdump, bool, 0644); module_param(stackdump, bool, 0644);
MODULE_PARM_DESC(stackdump, "Enable stackdump.");
static bool use_trace = false; static bool use_trace = false;
module_param(use_trace, bool, 0644); module_param(use_trace, bool, 0644);
MODULE_PARM_DESC(use_trace, "Use trace_printk instead of printk. This is only for debugging.");
static void show_backtrace(void) static void show_backtrace(void)
{ {