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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-12-13 03:48:48 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-12-13 03:48:48 +0300 |
commit | eb4511538191ac758faa0735fe06c5ce8202ae04 (patch) | |
tree | 8ac6a7f252d9a30206663d758ea302a4e5f418c6 /tools/verification/rv/src/utils.c | |
parent | 535ea85de3dabf8c04e88b6e968ff793b7e58da9 (diff) | |
parent | afc70ccb962861e068e04c6089827493f5160a0a (diff) | |
download | linux-eb4511538191ac758faa0735fe06c5ce8202ae04.tar.xz |
Merge tag 'trace-tools-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing tools updates from Steven Rostedt:
- New tool "rv" for starting and stopping runtime verification.
Example:
./rv mon wip -r printk -v
Enables the wake-in-preempt monitor and the printk reactor in verbose
mode
- Fix exit status of rtla usage() calls
* tag 'trace-tools-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
Documentation/rv: Add verification/rv man pages
tools/rv: Add in-kernel monitor interface
rv: Add rv tool
rtla: Fix exit status when returning from calls to usage()
Diffstat (limited to 'tools/verification/rv/src/utils.c')
-rw-r--r-- | tools/verification/rv/src/utils.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tools/verification/rv/src/utils.c b/tools/verification/rv/src/utils.c new file mode 100644 index 000000000000..5677b439dc2f --- /dev/null +++ b/tools/verification/rv/src/utils.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * util functions. + * + * Copyright (C) 2022 Red Hat Inc, Daniel Bristot de Oliveira <bristot@kernel.org> + */ + +#include <stdarg.h> +#include <stdio.h> +#include <utils.h> + +int config_debug; + +#define MAX_MSG_LENGTH 1024 + +/** + * err_msg - print an error message to the stderr + */ +void err_msg(const char *fmt, ...) +{ + char message[MAX_MSG_LENGTH]; + va_list ap; + + va_start(ap, fmt); + vsnprintf(message, sizeof(message), fmt, ap); + va_end(ap); + + fprintf(stderr, "%s", message); +} + +/** + * debug_msg - print a debug message to stderr if debug is set + */ +void debug_msg(const char *fmt, ...) +{ + char message[MAX_MSG_LENGTH]; + va_list ap; + + if (!config_debug) + return; + + va_start(ap, fmt); + vsnprintf(message, sizeof(message), fmt, ap); + va_end(ap); + + fprintf(stderr, "%s", message); +} |