------------------------------
>From c8fc3f05c3a2d6124cabac0d531af22c1fec78be Wed, 25 Jan 2012 16:50:54 -0500
From: Daniel U. Thibault <[email protected]>
Date: Wed, 25 Jan 2012 16:50:39 -0500
Subject: [PATCH] lttng-tools commands/add_context.c: Improve usage()
diff --git a/src/bin/lttng/commands/add_context.c
b/src/bin/lttng/commands/add_context.c
index 82abc73..075b270 100644
--- a/src/bin/lttng/commands/add_context.c
+++ b/src/bin/lttng/commands/add_context.c
@@ -303,33 +303,35 @@
{
fprintf(ofp, "usage: lttng add-context -t TYPE\n");
fprintf(ofp, "\n");
- fprintf(ofp, "If no event name is given (-e), the context will be added
to the channel\n");
fprintf(ofp, "If no channel and no event is given (-c/-e), the
context\n");
fprintf(ofp, "will be added to all events and all channels.\n");
+ fprintf(ofp, "Otherwise the context will be added only to the channel
(-c)\n");
+ fprintf(ofp, "and/or event (-e) indicated.\n");
fprintf(ofp, "\n");
fprintf(ofp, "Options:\n");
fprintf(ofp, " -h, --help Show this help\n");
fprintf(ofp, " --list-options Simple listing of options\n");
- fprintf(ofp, " -s, --session Apply on session name\n");
- fprintf(ofp, " -c, --channel NAME Apply on channel\n");
- fprintf(ofp, " -e, --event NAME Apply on event\n");
- fprintf(ofp, " -k, --kernel Apply for the kernel
tracer\n");
+ fprintf(ofp, " -s, --session NAME Apply to the session NAME\n");
+ fprintf(ofp, " -c, --channel NAME Apply to the channel NAME\n");
+ fprintf(ofp, " -e, --event NAME Apply to the event NAME\n");
+ fprintf(ofp, " -k, --kernel Apply to the kernel tracer\n");
#if 0
- fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space
tracer\n");
+ fprintf(ofp, " -u, --userspace [CMD] Apply to the user-space
tracer\n");
fprintf(ofp, " If no CMD, the domain used is
UST global\n");
- fprintf(ofp, " or else the domain is UST
EXEC_NAME\n");
+ fprintf(ofp, " otherwise the domain is UST
EXEC_NAME\n");
fprintf(ofp, " -p, --pid PID If -u, apply to specific PID
(domain: UST PID)\n");
#else
- fprintf(ofp, " -u, --userspace Apply for the user-space
tracer\n");
+ fprintf(ofp, " -u, --userspace Apply to the user-space
tracer\n");
#endif
- fprintf(ofp, " -t, --type TYPE Context type. You can repeat
that option on\n");
- fprintf(ofp, " the command line.\n");
+ fprintf(ofp, " (--kernel preempts
--userspace)\n");
+ fprintf(ofp, " -t, --type TYPE Context type. You can repeat
that option on the\n");
+ fprintf(ofp, " command line to specify
multiple contexts at once.\n");
fprintf(ofp, " TYPE can be one of the strings
below:\n");
print_ctx_type(ofp);
fprintf(ofp, "\n");
fprintf(ofp, "Example:\n");
fprintf(ofp, "This command will add the context information 'prio' and
two perf\n"
- "counters: hardware branch misses and cache misses, to
all events\n"
+ "counters (hardware branch misses and cache misses), to
all events\n"
"in the trace data output:\n");
fprintf(ofp, "# lttng add-context -k -t prio -t perf:branch-misses -t
perf:cache-misses\n");
fprintf(ofp, "\n");
------------------------------
Daniel U. Thibault
R & D pour la défense Canada - Valcartier (RDDC Valcartier) / Defence R&D
Canada - Valcartier (DRDC Valcartier)
Système de systèmes (SdS) / System of Systems (SoS)
Solutions informatiques et expérimentations (SIE) / Computing Solutions and
Experimentations (CSE)
2459 Boul. Pie XI Nord
Québec, QC G3J 1X5
CANADA
Vox : (418) 844-4000 x4245
Fax : (418) 844-4538
NAC: 918V QSDJ
Gouvernement du Canada / Government of Canada
<http://www.valcartier.drdc-rddc.gc.ca/>
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