Revision f274ef8747d3be649bba8708696fb31cb00fa75a authored by Srivatsa S. Bhat on 21 May 2013, 09:32:48 UTC, committed by Benjamin Herrenschmidt on 31 May 2013, 22:29:27 UTC
Adam Lackorzynski reported the following build failure on !CONFIG_HOTPLUG_CPU configuration: CC arch/powerpc/kernel/rtas.o arch/powerpc/kernel/rtas.c: In function ‘rtas_cpu_state_change_mask’: arch/powerpc/kernel/rtas.c:843:4: error: implicit declaration of function ‘cpu_down’ [-Werror=implicit-function-declaration] cc1: all warnings being treated as errors make[1]: *** [arch/powerpc/kernel/rtas.o] Error 1 make: *** [arch/powerpc/kernel] Error 2 The build fails because cpu_down() is defined only under CONFIG_HOTPLUG_CPU. Looking further, the mobility code in pseries is one of the call-sites which uses rtas_ibm_suspend_me(), which in turn calls rtas_cpu_state_change_mask(). And the mobility code is unconditionally compiled-in (it does not fall under any Kconfig option). And commit 120496ac (powerpc: Bring all threads online prior to migration/hibernation) which introduced this build regression is critical for the proper functioning of the migration code. So it appears that the only solution to this problem is to enable CONFIG_HOTPLUG_CPU if SMP is enabled on PPC_PSERIES platforms. So make that change in the Kconfig. Reported-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de> Cc: stable@vger.kernel.org Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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File | Mode | Size |
---|---|---|
Kconfig | -rw-r--r-- | 7.6 KB |
Makefile | -rw-r--r-- | 1.0 KB |
ath3k.c | -rw-r--r-- | 12.2 KB |
bcm203x.c | -rw-r--r-- | 6.8 KB |
bfusb.c | -rw-r--r-- | 16.1 KB |
bluecard_cs.c | -rw-r--r-- | 20.3 KB |
bpa10x.c | -rw-r--r-- | 10.3 KB |
bt3c_cs.c | -rw-r--r-- | 15.2 KB |
btmrvl_debugfs.c | -rw-r--r-- | 5.8 KB |
btmrvl_drv.h | -rw-r--r-- | 3.9 KB |
btmrvl_main.c | -rw-r--r-- | 15.0 KB |
btmrvl_sdio.c | -rw-r--r-- | 26.3 KB |
btmrvl_sdio.h | -rw-r--r-- | 3.0 KB |
btsdio.c | -rw-r--r-- | 8.2 KB |
btuart_cs.c | -rw-r--r-- | 14.3 KB |
btusb.c | -rw-r--r-- | 41.5 KB |
btwilink.c | -rw-r--r-- | 8.9 KB |
dtl1_cs.c | -rw-r--r-- | 12.7 KB |
hci_ath.c | -rw-r--r-- | 5.0 KB |
hci_bcsp.c | -rw-r--r-- | 18.4 KB |
hci_h4.c | -rw-r--r-- | 4.0 KB |
hci_h5.c | -rw-r--r-- | 15.8 KB |
hci_ldisc.c | -rw-r--r-- | 13.1 KB |
hci_ll.c | -rw-r--r-- | 11.9 KB |
hci_uart.h | -rw-r--r-- | 2.9 KB |
hci_vhci.c | -rw-r--r-- | 6.2 KB |
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