Linux-rt-users archive on lore.kernel.org
 help / color / Atom feed
From: Masami Hiramatsu <mhiramat@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
	bhargavb <bhargavaramudu@gmail.com>,
	linux-kernel@vger.kernel.org, Paul Clarke <pc@us.ibm.com>,
	Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>,
	Thomas Richter <tmricht@linux.vnet.ibm.com>,
	linux-rt-users@vger.kernel.org, linux-perf-users@vger.kernel.org
Subject: [PATCH v3 1/5] perf-probe: Add warning message if there is unexpected event name
Date: Sat,  9 Dec 2017 01:26:46 +0900
Message-ID: <151275040665.24652.5188568529237584489.stgit@devbox> (raw)
In-Reply-To: <151275037752.24652.5169845651138876257.stgit@devbox>

This improve the error message so that user can know
event-name error before writing new events to
kprobe-events interface.

E.g.
   ======
   #./perf probe -x /lib64/libc-2.25.so malloc_get_state*
   Internal error: "malloc_get_state@GLIBC_2" is an invalid event name.
     Error: Failed to add events.
   ======

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
---
 Changes in v3:
  - Update the error message.
---
 tools/perf/util/probe-event.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index b7aaf9b2294d..262d5da86623 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -2625,6 +2625,14 @@ static int get_new_event_name(char *buf, size_t len, const char *base,
 
 out:
 	free(nbase);
+
+	/* Final validation */
+	if (ret >= 0 && !is_c_func_name(buf)) {
+		pr_warning("Internal error: \"%s\" is an invalid event name.\n",
+			   buf);
+		ret = -EINVAL;
+	}
+
 	return ret;
 }
 

  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-08 16:26 [PATCH v3 0/5] perf-probe: Improve probing on versioned symbols Masami Hiramatsu
2017-12-08 16:26 ` Masami Hiramatsu [this message]
2017-12-08 16:27 ` [PATCH v3 2/5] perf-probe: Cut off the version suffix from event name Masami Hiramatsu
2017-12-08 16:27 ` [PATCH v3 3/5] perf-probe: Add __return suffix for return events Masami Hiramatsu
2017-12-08 16:28 ` [PATCH v3 4/5] perf-probe: Find versioned symbols from map Masami Hiramatsu
2017-12-08 16:28 ` [PATCH v3 5/5] perf-probe: Support escaped character in parser Masami Hiramatsu
2017-12-11 20:03   ` Arnaldo Carvalho de Melo
2017-12-12 14:46     ` Masami Hiramatsu
2017-12-12 15:01       ` Arnaldo Carvalho de Melo

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=151275040665.24652.5188568529237584489.stgit@devbox \
    --to=mhiramat@kernel.org \
    --cc=acme@kernel.org \
    --cc=bhargavaramudu@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-perf-users@vger.kernel.org \
    --cc=linux-rt-users@vger.kernel.org \
    --cc=pc@us.ibm.com \
    --cc=ravi.bangoria@linux.vnet.ibm.com \
    --cc=tmricht@linux.vnet.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-rt-users archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-rt-users/0 linux-rt-users/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-rt-users linux-rt-users/ https://lore.kernel.org/linux-rt-users \
		linux-rt-users@vger.kernel.org linux-rt-users@archiver.kernel.org
	public-inbox-index linux-rt-users

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-rt-users


AGPL code for this site: git clone https://public-inbox.org/ public-inbox