Linux-Trace-Devel Archive on lore.kernel.org
 help / color / Atom feed
From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH 8/8] trace-cmd: Add new function to set log level
Date: Wed, 28 Apr 2021 10:41:49 +0300
Message-ID: <20210428074149.757163-9-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20210428074149.757163-1-tz.stoyanov@gmail.com>

Introduce a new trace-cmd internal function to set the application log
level.
 trace_set_verbose()
The log level can be set using string with log id or log name.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 tracecmd/include/trace-local.h |  2 ++
 tracecmd/trace-cmd.c           | 41 ++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/tracecmd/include/trace-local.h b/tracecmd/include/trace-local.h
index 1218de12..cb929be4 100644
--- a/tracecmd/include/trace-local.h
+++ b/tracecmd/include/trace-local.h
@@ -36,6 +36,8 @@ void usage(char **argv);
 extern int silence_warnings;
 extern int show_status;
 
+int trace_set_verbose(char *level);
+
 struct pid_record_data {
 	int			pid;
 	int			brass[2];
diff --git a/tracecmd/trace-cmd.c b/tracecmd/trace-cmd.c
index 60cd3ea1..4e4a73af 100644
--- a/tracecmd/trace-cmd.c
+++ b/tracecmd/trace-cmd.c
@@ -45,6 +45,47 @@ void *malloc_or_die(unsigned int size)
 	return data;
 }
 
+static struct trace_log_severity {
+	int		id;
+	const char	*name;
+} log_severtity[] = {
+	{ .id = TEP_LOG_NONE, .name = "none" },
+	{ .id = TEP_LOG_CRITICAL, .name = "crit" },
+	{ .id = TEP_LOG_ERROR, .name = "err" },
+	{ .id = TEP_LOG_WARNING, .name = "warn" },
+	{ .id = TEP_LOG_INFO, .name = "info" },
+	{ .id = TEP_LOG_DEBUG, .name = "debug" },
+	{ .id = TEP_LOG_ALL, .name = "all" },
+};
+
+int trace_set_verbose(char *level)
+{
+	int id;
+
+	if (!level)
+		return -1;
+
+	if (isdigit(level[0])) {
+		id = atoi(level);
+		if (id >= TEP_LOG_NONE && id <= TEP_LOG_ALL) {
+			tracecmd_set_loglevel(id);
+			return 0;
+		}
+	} else {
+		int size = sizeof(log_severtity) / sizeof(log_severtity[0]);
+		int i;
+
+		for (i = 0; i < size; i++) {
+			if (strlen(level) >= strlen(log_severtity[i].name) &&
+			    !strncmp(level, log_severtity[i].name, strlen(log_severtity[i].name))) {
+				tracecmd_set_loglevel(log_severtity[i].id);
+				return 0;
+			}
+		}
+	}
+
+	return -1;
+}
 
 /**
  * struct command
-- 
2.30.2


      parent reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-28  7:41 [PATCH 0/8] Changes to trace-cmd logs Tzvetomir Stoyanov (VMware)
2021-04-28  7:41 ` [PATCH 1/8] trace-cmd library: Use tep_vprint() for logs Tzvetomir Stoyanov (VMware)
2021-04-28  7:41 ` [PATCH 2/8] trace-cmd library: Add tracecmd_info() log function Tzvetomir Stoyanov (VMware)
2021-04-28  7:41 ` [PATCH 3/8] trace-cmd library: Add log levels Tzvetomir Stoyanov (VMware)
2021-04-28  7:41 ` [PATCH 4/8] trace-cmd library: Document the API for " Tzvetomir Stoyanov (VMware)
2021-04-28  7:41 ` [PATCH 5/8] trace-cmd library: Renamed tracecmd_fatal() to tracecmd_critical() Tzvetomir Stoyanov (VMware)
2021-04-28  7:41 ` [PATCH 6/8] trace-cmd library: Set debug log level in debug mode Tzvetomir Stoyanov (VMware)
2021-04-28  7:41 ` [PATCH 7/8] trace-cmd report: Set the log level with -V and -q options Tzvetomir Stoyanov (VMware)
2021-04-28  7:41 ` Tzvetomir Stoyanov (VMware) [this message]

Reply instructions:

You may reply publicly 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=20210428074149.757163-9-tz.stoyanov@gmail.com \
    --to=tz.stoyanov@gmail.com \
    --cc=linux-trace-devel@vger.kernel.org \
    --cc=rostedt@goodmis.org \
    /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-Trace-Devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-trace-devel/0 linux-trace-devel/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-trace-devel linux-trace-devel/ https://lore.kernel.org/linux-trace-devel \
		linux-trace-devel@vger.kernel.org
	public-inbox-index linux-trace-devel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-trace-devel


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