2023-05-29 02:40:24

by Tiezhu Yang

[permalink] [raw]
Subject: [PATCH v2 2/3] 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 <[email protected]>
Signed-off-by: Tiezhu Yang <[email protected]>
Reviewed-by: Leo Yan <[email protected]>
---
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 e530587..1628731 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