s390utils/0027-zfcpdump-disable-memory-cgroups.patch
2010-07-07 13:42:34 +00:00

35 lines
1.3 KiB
Diff

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