57 lines
1.4 KiB
Diff
57 lines
1.4 KiB
Diff
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From d3e6eb729840935ac4f700f4ac2d32ac6acaa88d Mon Sep 17 00:00:00 2001
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From: Colin Ian King <colin.king@canonical.com>
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Date: Mon, 18 May 2020 10:00:32 +0100
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Subject: [PATCH 05/28] stress-shm-sysv: exercise NUMA mempolicy on shm
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Add more kernel test coverage to shm
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Signed-off-by: Colin Ian King <colin.king@canonical.com>
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---
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stress-shm-sysv.c | 23 +++++++++++++++++++++++
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1 file changed, 23 insertions(+)
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diff --git a/stress-shm-sysv.c b/stress-shm-sysv.c
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index 9873f8935a12..7703e58cad7a 100644
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--- a/stress-shm-sysv.c
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+++ b/stress-shm-sysv.c
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@@ -37,6 +37,10 @@ static const stress_help_t help[] = {
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defined(HAVE_SHM_SYSV)
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#define KEY_GET_RETRIES (40)
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+#define BITS_PER_BYTE (8)
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+#define NUMA_LONG_BITS (sizeof(unsigned long) * BITS_PER_BYTE)
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+#define MPOL_F_ADDR (1 << 1)
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+#define MPOL_DEFAULT (0)
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/*
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* Note, running this test with the --maximize option on
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@@ -369,6 +373,25 @@ static int stress_shm_sysv_child(
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}
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#endif
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+ /*
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+ * Exercise NUMA mem_policy on shm
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+ */
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+#if defined(__NR_get_mempolicy) && \
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+ defined(__NR_set_mempolicy)
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+ {
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+ int ret, mode;
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+ unsigned long node_mask[NUMA_LONG_BITS];
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+
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+ ret = shim_get_mempolicy(&mode, node_mask, 1,
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+ (unsigned long)addrs[i], MPOL_F_ADDR);
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+ if (ret == 0) {
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+ ret = shim_set_mempolicy(MPOL_DEFAULT, NULL, 1);
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+ (void)ret;
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+ }
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+ (void)ret;
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+ }
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+#endif
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+
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inc_counter(args);
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}
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reap:
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--
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2.21.3
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