From: Amir Vadai Date: Mon, 25 Aug 2014 13:06:52 +0000 (+0300) Subject: crash_dump: Make is_kdump_kernel() accessible from modules X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b3292e88e33677a90c18236fd895ace2d80efa3c;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git crash_dump: Make is_kdump_kernel() accessible from modules In order to make is_kdump_kernel() accessible from modules, need to make elfcorehdr_addr exported. This was rejected in the past [1] because reset_devices was prefered in that context (reseting the device in kdump kernel), but now there are some network drivers that need to reduce memory usage when loaded from a kdump kernel. And in that context, is_kdump_kernel() suits better. [1] - https://lkml.org/lkml/2011/1/27/341 CC: Vivek Goyal Signed-off-by: Amir Vadai Signed-off-by: David S. Miller --- diff --git a/kernel/crash_dump.c b/kernel/crash_dump.c index c766ee54c0b1..b64e238b553b 100644 --- a/kernel/crash_dump.c +++ b/kernel/crash_dump.c @@ -18,6 +18,7 @@ unsigned long saved_max_pfn; * it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. */ unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX; +EXPORT_SYMBOL_GPL(elfcorehdr_addr); /* * stores the size of elf header of crash image