Linux kernel development work - see feature branches https://git.zx2c4.com/linux-dev/atom/samples/fprobe?h=linus%2Fmaster 2022-06-17T19:53:29Z 2022-06-17T19:53:29Z Masami Hiramatsu (Google) mhiramat@kernel.org 2022-06-07T16:11:02Z urn:sha1:c88dbbcd88c233cb759ec857b57864c5bfcea26a Add use_trace option to use trace_printk() instead of pr_info() so that the handler doesn't involve the RCU operations. And show the hit and missed counter so that the user can check how many times the probe handler hit and missed. Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/bpf/165461826247.280167.11939123218334322352.stgit@devnote2 2022-03-18T03:16:58Z Masami Hiramatsu mhiramat@kernel.org 2022-03-15T14:02:00Z urn:sha1:6ee64cc3020b5b5537827c71d8eaac814ad4d346 Add a sample program for the fprobe. The sample_fprobe puts a fprobe on kernel_clone() by default. This dump stack and some called address info at the function entry and exit. The sample_fprobe.ko gets 2 parameters. - symbol: you can specify the comma separated symbols or wildcard symbol pattern (in this case you can not use comma) - stackdump: a bool value to enable or disable stack dump in the fprobe handler. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Tested-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/164735291987.1084943.4449670993752806840.stgit@devnote2