linux-kernel - [PATCH v2 01/13] selftests/resctrl: Convert get_mem_bw

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Date: Mon, 11 Mar 2024 15:52:18 +0200
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: linux-kselftest@...r.kernel.org,
	Reinette Chatre <reinette.chatre@...el.com>,
	Shuah Khan <shuah@...nel.org>,
	Babu Moger <babu.moger@....com>,
	Maciej Wieczór-Retman <maciej.wieczor-retman@...el.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>,
	linux-kernel@...r.kernel.org,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH v2 01/13] selftests/resctrl: Convert get_mem_bw_imc() fd close to for loop

The open() side handles fds in a for loop but close() is based on two
fixed indexes READ and WRITE.

Match the close() side with the open() side by using for loop for
consistency.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 tools/testing/selftests/resctrl/resctrl_val.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c
index 5a49f07a6c85..36139cba7be8 100644
--- a/tools/testing/selftests/resctrl/resctrl_val.c
+++ b/tools/testing/selftests/resctrl/resctrl_val.c
@@ -368,10 +368,9 @@ static int get_mem_bw_imc(int cpu_no, char *bw_report, float *bw_imc)
 		writes += w->return_value.value * of_mul_write * SCALE;
 	}
 
-	for (imc = 0; imc < imcs; imc++) {
-		close(imc_counters_config[imc][READ].fd);
-		close(imc_counters_config[imc][WRITE].fd);
-	}
+	for (imc = 0; imc < imcs; imc++)
+		for (j = 0; j < 2; j++)
+			close(imc_counters_config[imc][j].fd);
 
 	if (strcmp(bw_report, "reads") == 0) {
 		*bw_imc = reads;
-- 
2.39.2