35 lines
1.3 KiB
Diff
35 lines
1.3 KiB
Diff
From cc672d10ef6ee3da060649fa595ed9d980e5e60e Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Dan=20Hor=C3=A1k?= <dan@danny.cz>
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Date: Mon, 22 Mar 2010 12:58:13 +0100
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Subject: [PATCH] zfcpdump - disable memory cgroups
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Description: zipl/zfcpdump: Use "cgroup_disable=memory" kernel parameter
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Symptom: Out of memory kernel panic during SCSI dump.
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Problem: The zfcpdump kernel has to run within a 32 MB limit. When
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using "memory cgroups" about 2.6 MB are allocated, which leads
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to memory problems for zfcpdump.
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Solution: For zfcpdump we do not need "memory cgroups". Therefore this patch
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adds the kernel parameter "cgroup_disable=memory" to save 2.5 MB
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of memory.
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---
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zipl/src/bootmap.c | 3 ++-
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1 files changed, 2 insertions(+), 1 deletions(-)
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diff --git a/zipl/src/bootmap.c b/zipl/src/bootmap.c
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index 043a562..69f721e 100644
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--- a/zipl/src/bootmap.c
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+++ b/zipl/src/bootmap.c
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@@ -653,7 +653,8 @@ create_dump_fs_parmline(const char* parmline, const char* root_dev,
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if (!result)
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return NULL;
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snprintf(result, DUMP_PARAM_MAX_LEN, "%s%sroot=%s dump_part=%d "
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- "dump_mem=%lld maxcpus=%d", parmline ? parmline : "",
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+ "dump_mem=%lld maxcpus=%d cgroup_disable=memory",
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+ parmline ? parmline : "",
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parmline ? " " : "", root_dev, part_num,
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(unsigned long long) mem, max_cpus);
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result[DUMP_PARAM_MAX_LEN - 1] = 0;
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--
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1.6.6.1
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