[PATCH v4 08/10] tools/bootconfig: Add histogram syntax support to bconf2ftrace.sh

Masami Hiramatsu
2021-08-10T02:08:15Z

Add histogram syntax support to bconf2ftrace.sh script.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
Changes in v4:
- Fix to remove spaces in the expression for the variables.
---
tools/bootconfig/scripts/bconf2ftrace.sh | 88 ++++++++++++++++++++++++++++++
tools/bootconfig/scripts/xbc.sh | 4 +
2 files changed, 90 insertions(+), 2 deletions(-)

diff --git a/tools/bootconfig/scripts/bconf2ftrace.sh b/tools/bootconfig/scripts/bconf2ftrace.sh
index 651049c782c0..850c2073433e 100755
--- a/tools/bootconfig/scripts/bconf2ftrace.sh
+++ b/tools/bootconfig/scripts/bconf2ftrace.sh
@@ -94,6 +94,92 @@ compose_synth() { # event_name branch
xbc_get_val $2 | while read field; do echo -n "$field; "; done
}

+print_hist_array() { # prefix key
+ __sep="="
+ if xbc_has_key ${1}.${2}; then
+ echo -n ":$2"
+ xbc_get_val ${1}.${2} | while read field; do
+ echo -n "$__sep$field"; __sep=","
+ done
+ fi
+}
+
+print_hist_action_array() { # prefix key
+ __sep="("
+ echo -n ".$2"
+ xbc_get_val ${1}.${2} | while read field; do
+ echo -n "$__sep$field"; __sep=","
+ done
+ echo -n ")"
+}
+
+print_hist_one_action() { # prefix handler param
+ echo -n ":${2}("`xbc_get_val ${1}.${3}`")"
+ if xbc_has_key "${1}.trace"; then
+ print_hist_action_array ${1} "trace"
+ elif xbc_has_key "${1}.save"; then
+ print_hist_action_array ${1} "save"
+ elif xbc_has_key "${1}.snapshot"; then
+ echo -n ".snapshot()"
+ fi
+}
+
+print_hist_actions() { # prefix handler param
+ for __hdr in `xbc_subkeys ${1}.${2} 1 ".[0-9]"`; do
+ print_hist_one_action ${1}.${2}.$__hdr ${2} ${3}
+ done
+ if xbc_has_key ${1}.${2}.${3} ; then
+ print_hist_one_action ${1}.${2} ${2} ${3}
+ fi
+}
+
+print_hist_var() { # prefix varname
+ echo -n ":${2}="`xbc_get_val ${1}.var.${2} | tr -d [:space:]`
+}
+
+print_one_histogram() { # prefix
+ echo -n "hist"
+ print_hist_array $1 "keys"
+ print_hist_array $1 "values"
+ print_hist_array $1 "sort"
+ if xbc_has_key "${1}.size"; then
+ echo -n ":size="`xbc_get_val ${1}.size`
+ fi
+ if xbc_has_key "${1}.name"; then
+ echo -n ":name="`xbc_get_val ${1}.name`
+ fi
+ for __var in `xbc_subkeys "${1}.var" 1`; do
+ print_hist_var ${1} ${__var}
+ done
+ if xbc_has_key "${1}.pause"; then
+ echo -n ":pause"
+ elif xbc_has_key "${1}.continue"; then
+ echo -n ":continue"
+ elif xbc_has_key "${1}.clear"; then
+ echo -n ":clear"
+ fi
+ print_hist_actions ${1} "onmax" "var"
+ print_hist_actions ${1} "onchange" "var"
+ print_hist_actions ${1} "onmatch" "event"
+
+ if xbc_has_key "${1}.filter"; then
+ echo -n " if "`xbc_get_val ${1}.filter`
+ fi
+}
+
+setup_one_histogram() { # prefix trigger-file
+ run_cmd "echo '`print_one_histogram ${1}`' >> ${2}"
+}
+
+setup_histograms() { # prefix trigger-file
+ for __hist in `xbc_subkeys ${1} 1 ".[0-9]"`; do
+ setup_one_histogram ${1}.$__hist ${2}
+ done
+ if xbc_has_key ${1}.keys; then
+ setup_one_histogram ${1} ${2}
+ fi
+}
+
setup_event() { # prefix group event [instance]
branch=$1.$2.$3
if [ "$4" ]; then
@@ -121,6 +207,8 @@ setup_event() { # prefix group event [instance]
set_value_of ${branch}.filter ${eventdir}/filter
set_array_of ${branch}.actions ${eventdir}/trigger

+ setup_histograms ${branch}.hist ${eventdir}/trigger
+
if xbc_has_key ${branch}.enable; then
run_cmd "echo 1 > ${eventdir}/enable"
fi
diff --git a/tools/bootconfig/scripts/xbc.sh b/tools/bootconfig/scripts/xbc.sh
index b8c84e654556..1f0ebf50dd2d 100644
--- a/tools/bootconfig/scripts/xbc.sh
+++ b/tools/bootconfig/scripts/xbc.sh
@@ -49,8 +49,8 @@ xbc_has_branch() { # prefix-key
grep -q "^$1" $XBC_TMPFILE
}

-xbc_subkeys() { # prefix-key depth
+xbc_subkeys() { # prefix-key depth [subkey-pattern]
__keys=`echo $1 | sed "s/\./ /g"`
__s=`nr_args $__keys`
- grep "^$1" $XBC_TMPFILE | cut -d= -f1| cut -d. -f$((__s + 1))-$((__s + $2)) | uniq
+ grep "^$1$3" $XBC_TMPFILE | cut -d= -f1| cut -d. -f$((__s + 1))-$((__s + $2)) | uniq
}