linux-kernel - [PATCH v5 3/4] perf bench syscall: Add getpgid syscall benchmark

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Message-Id: <1668052208-14047-4-git-send-email-yangtiezhu@loongson.cn>
Date:   Thu, 10 Nov 2022 11:50:07 +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>
Cc:     Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: [PATCH v5 3/4] perf bench syscall: Add getpgid syscall benchmark

This commit adds a simple getpgid syscall benchmark, more syscall
benchmarks can be added in the future.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 tools/arch/x86/include/uapi/asm/unistd_32.h |  3 +++
 tools/arch/x86/include/uapi/asm/unistd_64.h |  3 +++
 tools/perf/bench/bench.h                    |  1 +
 tools/perf/bench/syscall.c                  | 11 +++++++++++
 tools/perf/builtin-bench.c                  |  1 +
 5 files changed, 19 insertions(+)

diff --git a/tools/arch/x86/include/uapi/asm/unistd_32.h b/tools/arch/x86/include/uapi/asm/unistd_32.h
index 4d8873a..053122c 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_32.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_32.h
@@ -2,6 +2,9 @@
 #ifndef __NR_getppid
 #define __NR_getppid 64
 #endif
+#ifndef __NR_getpgid
+#define __NR_getpgid 132
+#endif
 #ifndef __NR_gettid
 #define __NR_gettid 224
 #endif
diff --git a/tools/arch/x86/include/uapi/asm/unistd_64.h b/tools/arch/x86/include/uapi/asm/unistd_64.h
index e29038a..54a6c4d 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_64.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_64.h
@@ -2,6 +2,9 @@
 #ifndef __NR_getppid
 #define __NR_getppid 110
 #endif
+#ifndef __NR_getpgid
+#define __NR_getpgid 121
+#endif
 #ifndef __NR_gettid
 #define __NR_gettid 186
 #endif
diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
index 6cefb43..0c03f12 100644
--- a/tools/perf/bench/bench.h
+++ b/tools/perf/bench/bench.h
@@ -34,6 +34,7 @@ int bench_numa(int argc, const char **argv);
 int bench_sched_messaging(int argc, const char **argv);
 int bench_sched_pipe(int argc, const char **argv);
 int bench_syscall_basic(int argc, const char **argv);
+int bench_syscall_getpgid(int argc, const char **argv);
 int bench_mem_memcpy(int argc, const char **argv);
 int bench_mem_memset(int argc, const char **argv);
 int bench_mem_find_bit(int argc, const char **argv);
diff --git a/tools/perf/bench/syscall.c b/tools/perf/bench/syscall.c
index 746fd71..6411b14 100644
--- a/tools/perf/bench/syscall.c
+++ b/tools/perf/bench/syscall.c
@@ -46,6 +46,9 @@ static int bench_syscall_common(int argc, const char **argv, int syscall)
 		case __NR_getppid:
 			getppid();
 			break;
+		case __NR_getpgid:
+			getpgid(0);
+			break;
 		default:
 			break;
 		}
@@ -58,6 +61,9 @@ static int bench_syscall_common(int argc, const char **argv, int syscall)
 	case __NR_getppid:
 		name = "getppid()";
 		break;
+	case __NR_getpgid:
+		name = "getpgid()";
+		break;
 	default:
 		break;
 	}
@@ -100,3 +106,8 @@ int bench_syscall_basic(int argc, const char **argv)
 {
 	return bench_syscall_common(argc, argv, __NR_getppid);
 }
+
+int bench_syscall_getpgid(int argc, const char **argv)
+{
+	return bench_syscall_common(argc, argv, __NR_getpgid);
+}
diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index 334ab89..c9a02ac 100644
--- a/tools/perf/builtin-bench.c
+++ b/tools/perf/builtin-bench.c
@@ -52,6 +52,7 @@ static struct bench sched_benchmarks[] = {
 
 static struct bench syscall_benchmarks[] = {
 	{ "basic",	"Benchmark for basic getppid(2) calls",		bench_syscall_basic	},
+	{ "getpgid",	"Benchmark for getpgid(2) calls",		bench_syscall_getpgid	},
 	{ "all",	"Run all syscall benchmarks",			NULL			},
 	{ NULL,		NULL,						NULL			},
 };
-- 
2.1.0