linux-kernel - [PATCH v2 7/7] scripts/faddr2line: Check only two symbols when calculating symbol size

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Message-Id: <20240415145538.1938745-8-bjohannesmeyer@gmail.com>
Date: Mon, 15 Apr 2024 16:55:38 +0200
From: Brian Johannesmeyer <bjohannesmeyer@...il.com>
To: Josh Poimboeuf <jpoimboe@...nel.org>,
	linux-kernel@...r.kernel.org,
	Brian Johannesmeyer <bjohannesmeyer@...il.com>
Subject: [PATCH v2 7/7] scripts/faddr2line: Check only two symbols when calculating symbol size

Rather than looping through each symbol in a particular section to
calculate a symbol's size, grep for the symbol and its immediate
successor, and only use those two symbols.

Signed-off-by: Brian Johannesmeyer <bjohannesmeyer@...il.com>
---
 scripts/faddr2line | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/faddr2line b/scripts/faddr2line
index 1fa6beef9f97..fe0cc45f03be 100755
--- a/scripts/faddr2line
+++ b/scripts/faddr2line
@@ -252,7 +252,7 @@ __faddr2line() {
 				found=2
 				break
 			fi
-		done < <(echo "${ELF_SYMS}" | sed 's/\[.*\]//' | ${AWK} -v sec=$sym_sec '$7 == sec' | sort --key=2)
+		done < <(echo "${ELF_SYMS}" | sed 's/\[.*\]//' | ${AWK} -v sec=$sym_sec '$7 == sec' | sort --key=2 | ${GREP} -A1 --no-group-separator " ${sym_name}$")
 
 		if [[ $found = 0 ]]; then
 			warn "can't find symbol: sym_name: $sym_name sym_sec: $sym_sec sym_addr: $sym_addr sym_elf_size: $sym_elf_size"
-- 
2.34.1