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From: Arnon Warshavsky <arnon@qwilt.com>
To: thomas@monjalon.net, anatoly.burakov@intel.com,
	wenzhuo.lu@intel.com, declan.doherty@intel.com,
	jerin.jacob@caviumnetworks.com, bruce.richardson@intel.com,
	ferruh.yigit@intel.com
Cc: dev@dpdk.org, arnon@qwilt.com
Subject: [dpdk-dev] [PATCH v3 13/13] devtools: prevent new instances of rte_panic and rte_exit
Date: Fri, 13 Apr 2018 21:30:44 +0300	[thread overview]
Message-ID: <1523644244-17511-14-git-send-email-arnon@qwilt.com> (raw)
In-Reply-To: <1523644244-17511-1-git-send-email-arnon@qwilt.com>

This patch adds a new function that is called
per every checked patch,
and alerts for new instances of rte_panic/rte_exit.
The check excludes comments, and alerts in the case
of a positive balance between additions and removals.

Signed-off-by: Arnon Warshavsky <arnon@qwilt.com>
---
 devtools/checkpatches.sh | 94 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 93 insertions(+), 1 deletion(-)

diff --git a/devtools/checkpatches.sh b/devtools/checkpatches.sh
index 7676a6b..fb37838 100755
--- a/devtools/checkpatches.sh
+++ b/devtools/checkpatches.sh
@@ -61,6 +61,90 @@ print_usage () {
 	END_OF_HELP
 }
 
+check_forbidden_additions() { # <file>
+    # ---------------------------------
+    #This awk script receives a list of expressions to monitor
+    #and a list of folders to search these expressions in
+    # - No search is done inside comments
+    # - Both additions and removals of the expressions are checked
+    #   A positive balance of additions fails the check
+	read -d '' awk_script << 'EOF'
+	BEGIN{
+		split(FOLDERS,deny_folders," ");
+		split(EXPRESSIONS,deny_expr," ");
+		in_file=0;
+		in_comment=0;
+		count=0;
+		comment_start="/*"
+		comment_end="*/"
+    }
+    # search for add/remove instances in current file
+    # state machine assumes the comments structure is enforced by
+    # checkpatches.pl
+    (in_file) {
+		# comment start
+		if (index($0,comment_start) > 0){
+			in_comment = 1
+		}
+		# non comment code
+		if (in_comment == 0) {
+			for (i in deny_expr) {
+				forbidden_added = "^\+.*" deny_expr[i];
+				forbidden_removed="^-.*" deny_expr[i];
+				current = expressions[deny_expr[i]]
+				if ($0 ~ forbidden_added) {
+					count = count + 1;
+					expressions[deny_expr[i]] = current + 1
+				}
+				if ($0 ~ forbidden_removed) {
+					count = count - 1;
+					expressions[deny_expr[i]] = current - 1
+				}
+			}
+		}
+
+		# comment end
+		if (index($0,comment_end) > 0)  {
+			in_comment = 0
+		}
+    }
+	# switch to next file , check if the balance of add/remove
+	# of previous filehad new additions
+	($0 ~ "^\+\+\+ b/") {
+		in_file = 0;
+		if (count > 0){
+			exit;
+		}
+		for (i in deny_folders){
+			re = "^\+\+\+ b/" deny_folders[i];
+			if ($0 ~ deny_folders[i]) {
+				in_file = 1
+				last_file = $0
+			}
+		}
+	}
+	END{
+		if (count > 0){
+			print "Forbidden expressions in " substr(last_file,6) ":"
+			for (key in expressions) {
+				if (expressions[key] > 0) {
+					print key
+				}
+			}
+			exit 1
+		}
+	}
+EOF
+	# ---------------------------------
+
+	# refrain from new additions of rte_panic() and rte_exit()
+	# under lib and net
+	# multiple folders and expressions are separated by spaces
+	awk -v FOLDERS="lib net" \
+		-v EXPRESSIONS="rte_panic\\\( rte_exit\\\(" \
+		"$awk_script" -
+}
+
 number=0
 quiet=false
 verbose=false
@@ -89,11 +173,19 @@ check () { # <patch> <commit> <title>
 	total=$(($total + 1))
 	! $verbose || printf '\n### %s\n\n' "$3"
 	if [ -n "$1" ] ; then
+		cat "$1" | check_forbidden_additions
+		[ $? -eq 0 ] || return 0
 		report=$($DPDK_CHECKPATCH_PATH $options "$1" 2>/dev/null)
 	elif [ -n "$2" ] ; then
-		report=$(git format-patch --find-renames --no-stat --stdout -1 $commit |
+		params=$(echo "--find-renames --no-stat --stdout -1")
+		body=$(git format-patch $params $commit)
+		echo "$body" | check_forbidden_additions
+		[ $? -eq 0 ] || return 0
+		report=$(echo "$body" |
 			$DPDK_CHECKPATCH_PATH $options - 2>/dev/null)
 	else
+		check_forbidden_additions -
+		[ $? -eq 0 ] || return 0
 		report=$($DPDK_CHECKPATCH_PATH $options - 2>/dev/null)
 	fi
 	[ $? -ne 0 ] || return 0
-- 
1.8.3.1

  parent reply	other threads:[~2018-04-13 18:31 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-13 18:30 [dpdk-dev] [PATCH v3 00/13] eal: replace calls to rte_panic and refrain from new instances Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 01/13] crypto: replace rte_panic instances in crypto driver Arnon Warshavsky
2018-04-16 11:49   ` Neil Horman
2018-04-16 14:24     ` Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 02/13] bond: replace rte_panic instances in bonding driver Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 03/13] e1000: replace rte_panic instances in e1000 driver Arnon Warshavsky
2018-04-16 15:34   ` Stephen Hemminger
2018-04-16 16:19     ` Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 04/13] ixgbe: replace rte_panic instances in ixgbe driver Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 05/13] eal: replace rte_panic instances in eventdev Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 06/13] kni: replace rte_panic instances in kni Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 07/13] eal: replace rte_panic instances in rte_malloc Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 08/13] eal: replace rte_panic instances in hugepage_info Arnon Warshavsky
2018-04-16 11:30   ` Burakov, Anatoly
2018-04-16 14:45     ` Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 09/13] eal: replace rte_panic instances in common_memzone Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 10/13] eal: replace rte_panic instances in interrupts thread Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 11/13] eal: replace rte_panic instances in ethdev Arnon Warshavsky
2018-04-13 18:30 ` [dpdk-dev] [PATCH v3 12/13] eal: replace rte_panic instances in init sequence Arnon Warshavsky
2018-04-13 18:30 ` Arnon Warshavsky [this message]
2018-04-16 11:22 ` [dpdk-dev] [PATCH v3 00/13] eal: replace calls to rte_panic and refrain from new instances Burakov, Anatoly
2018-04-16 13:43   ` Arnon Warshavsky

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