linux-kernel - [PATCH v3 3/5] perf arm64: Handle __NR3264

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Message-Id: <1685440265-7021-4-git-send-email-yangtiezhu@loongson.cn>
Date:   Tue, 30 May 2023 17:51:03 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>
Cc:     Hans-Peter Nilsson <hp@...s.com>,
        Alexander Kapshuk <alexander.kapshuk@...il.com>,
        Leo Yan <leo.yan@...aro.org>, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev,
        loongson-kernel@...ts.loongnix.cn
Subject: [PATCH v3 3/5] perf arm64: Handle __NR3264_ prefixed syscall number

After commit 9854e7ad35fe ("perf arm64: Simplify mksyscalltbl"),
in the generated syscall table file syscalls.c, there exist some
__NR3264_ prefixed syscall numbers such as [__NR3264_ftruncate],
it looks like not so good, just do some small filter operations
to handle __NR3264_ prefixed syscall number as a digital number.

Without this patch:

  [__NR3264_ftruncate] = "ftruncate",

With this patch:

  [46] = "ftruncate",

Suggested-by: Alexander Kapshuk <alexander.kapshuk@...il.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
Reviewed-by: Leo Yan <leo.yan@...aro.org>
---
 tools/perf/arch/arm64/entry/syscalls/mksyscalltbl | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
index 84976dc..0bcd64a 100755
--- a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
+++ b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
@@ -40,6 +40,7 @@ create_table()
 }
 
 $gcc -E -dM -x c -I $incpath/include/uapi $input \
-	|sed -ne 's/^#define __NR_//p' \
-	|sort -t' ' -k2 -n	       \
+	|awk '$2 ~ "__NR" && $3 !~ "__NR3264_" {
+		sub("^#define __NR(3264)?_", "");
+		print | "sort -k2 -n"}' \
 	|create_table
-- 
2.1.0