top: add keyboard commands to --help

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

2 files changed, 29 insertions, 8 deletions

diff --git a/include/usage.src.h b/include/usage.src.h
index ef2bebd8b..a4776a2d6 100644
--- a/include/usage.src.h
+++ b/include/usage.src.h
@@ -3826,14 +3826,6 @@ INSERT
        "Runs PROG. Sends SIG to it if it is not gone in SECS seconds.\n" \
        "Defaults: SECS: 10, SIG: TERM." \
 
-#define top_trivial_usage \
-       "[-b] [-nCOUNT] [-dSECONDS]" IF_FEATURE_TOPMEM(" [-m]")
-#define top_full_usage "\n\n" \
-       "Provide a view of process activity in real time.\n" \
-       "Read the status of all processes from /proc each SECONDS\n" \
-       "and display a screenful of them." \
-//TODO: add options and keyboard commands
-
 #define tr_trivial_usage \
        "[-cds] STRING1 [STRING2]"
 #define tr_full_usage "\n\n" \
diff --git a/procps/top.c b/procps/top.c
index f9106fac7..1eb33dc5d 100644
--- a/procps/top.c
+++ b/procps/top.c
@@ -833,6 +833,35 @@ enum {
                 | PSSCAN_COMM,
 };
 
+//usage:#if ENABLE_FEATURE_SHOW_THREADS || ENABLE_FEATURE_TOP_SMP_CPU
+//usage:# define IF_SHOW_THREADS_OR_TOP_SMP(...) __VA_ARGS__
+//usage:#else
+//usage:# define IF_SHOW_THREADS_OR_TOP_SMP(...)
+//usage:#endif
+//usage:#define top_trivial_usage
+//usage:       "[-b] [-nCOUNT] [-dSECONDS]" IF_FEATURE_TOPMEM(" [-m]")
+//usage:#define top_full_usage "\n\n"
+//usage:       "Provide a view of process activity in real time."
+//usage:   "\n""Read the status of all processes from /proc each SECONDS"
+//usage:   "\n""and display a screenful of them."
+//usage:   "\n""Keys:"
+//usage:   "\n""        N/M"
+//usage:                IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE("/P")
+//usage:                IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE("/T")
+//usage:           ": " IF_FEATURE_TOPMEM("show CPU usage, ") "sort by pid/mem"
+//usage:                IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE("/cpu")
+//usage:                IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE("/time")
+//usage:        IF_FEATURE_TOPMEM(
+//usage:   "\n""        S: show memory, R: reverse memory sort"
+//usage:        )
+//usage:        IF_SHOW_THREADS_OR_TOP_SMP(
+//usage:   "\n""        "
+//usage:                IF_FEATURE_SHOW_THREADS("H: toggle threads")
+//usage:                IF_FEATURE_SHOW_THREADS(IF_FEATURE_TOP_SMP_CPU(", "))
+//usage:                IF_FEATURE_TOP_SMP_CPU("1: toggle SMP")
+//usage:        )
+//usage:   "\n""        Q,^C: exit"
+
 int top_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int top_main(int argc UNUSED_PARAM, char **argv)
 {