#include #include #include "sig.h" void register_signal(int signal, void (*handler)(int)) { sigset_t block_mask; struct sigaction saction; sigfillset(&block_mask); saction.sa_handler = handler; saction.sa_mask = block_mask; saction.sa_flags = SA_RESTART; sigaction(signal, &saction, NULL); } void register_signal_f(int signal, void (*handler)(int), int flags) { sigset_t block_mask; struct sigaction saction; sigfillset(&block_mask); saction.sa_handler = handler; saction.sa_mask = block_mask; saction.sa_flags = flags; sigaction(signal, &saction, NULL); } ' href='http:///git.distanz.ch/cgit.cgi/linux/net-next.git' title='net-next.git Git repository'/>
summaryrefslogtreecommitdiff
path: root/Documentation/IRQ-affinity.txt
diff options
context:
space:
mode:
authorHeiko Carstens <heiko.carstens@de.ibm.com>2016-11-28 11:40:27 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2016-12-02 07:36:17 +0100
commit9f88eb4df728aebcd2ddd154d99f1d75b428b897 (patch)
tree8d5a9fd29948522675ced72e293f8955ad3339fe /Documentation/IRQ-affinity.txt
parentdd5224986eb40da06c4f66464cf5d1b5646073a1 (diff)
s390/kexec: use node 0 when re-adding crash kernel memory
When re-adding crash kernel memory within setup_resources() the function memblock_add() is used. That function will add memory by default to node "MAX_NUMNODES" instead of node 0, like the memory detection code does. In case of !NUMA this will trigger this warning when the kernel generates the vmemmap: Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead WARNING: CPU: 0 PID: 0 at mm/memblock.c:1261 memblock_virt_alloc_internal+0x76/0x220 CPU: 0 PID: 0 Comm: swapper Not tainted 4.9.0-rc6 #16 Call Trace: [<0000000000d0b2e8>] memblock_virt_alloc_try_nid+0x88/0xc8 [<000000000083c8ea>] __earlyonly_bootmem_alloc.constprop.1+0x42/0x50 [<000000000083e7f4>] vmemmap_populate+0x1ac/0x1e0 [<0000000000840136>] sparse_mem_map_populate+0x46/0x68 [<0000000000d0c59c>] sparse_init+0x184/0x238 [<0000000000cf45f6>] paging_init+0xbe/0xf8 [<0000000000cf1d4a>] setup_arch+0xa02/0xae0 [<0000000000ced75a>] start_kernel+0x72/0x450 [<0000000000100020>] _stext+0x20/0x80 If NUMA is selected numa_setup_memory() will fix the node assignments before the vmemmap will be populated; so this warning will only appear if NUMA is not selected. To fix this simply use memblock_add_node() and re-add crash kernel memory explicitly to node 0. Reported-and-tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Fixes: 4e042af463f8 ("s390/kexec: fix crash on resize of reserved memory") Cc: <stable@vger.kernel.org> # v4.8+ Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'Documentation/IRQ-affinity.txt')