diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2011-04-24 15:04:31 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-04 15:22:59 +1000 |
| commit | 7707e4110e5692fe85e7e6c471c9bb2a9254d313 (patch) | |
| tree | 1adbc1edfc26fa3b3258f8c1c592d8b4775fe78d /arch/powerpc/kernel/crash.c | |
| parent | 104699c0ab473535793b5fea156adaf309afd29b (diff) | |
powerpc/kexec: Fix build failure on 32-bit SMP
Commit b987812b3fcaf70fdf0037589e5d2f5f2453e6ce left
crash_kexec_wait_realmode() undefined for UP.
Commit 7c7a81b53e581d727d069cc45df5510516faac31 defined it for UP but
left it undefined for 32-bit SMP.
Seems like people are getting confused by nested #ifdef's, so move the
definitions of crash_kexec_wait_realmode() after the #ifdef CONFIG_SMP
section.
Compile-tested with 32-bit UP, 32-bit SMP and 64-bit SMP configurations.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/crash.c')
| -rw-r--r-- | arch/powerpc/kernel/crash.c | 59 |
1 files changed, 30 insertions, 29 deletions
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c index ccc2198e6b2..21f2c781ded 100644 --- a/arch/powerpc/kernel/crash.c +++ b/arch/powerpc/kernel/crash.c @@ -162,34 +162,6 @@ static void crash_kexec_prepare_cpus(int cpu) /* Leave the IPI callback set */ } -/* wait for all the CPUs to hit real mode but timeout if they don't come in */ -#ifdef CONFIG_PPC_STD_MMU_64 -static void crash_kexec_wait_realmode(int cpu) -{ - unsigned int msecs; - int i; - - msecs = 10000; - for (i=0; i < NR_CPUS && msecs > 0; i++) { - if (i == cpu) - continue; - - while (paca[i].kexec_state < KEXEC_STATE_REAL_MODE) { - barrier(); - if (!cpu_possible(i)) { - break; - } - if (!cpu_online(i)) { - break; - } - msecs--; - mdelay(1); - } - } - mb(); -} -#endif /* CONFIG_PPC_STD_MMU_64 */ - /* * This function will be called by secondary cpus or by kexec cpu * if soft-reset is activated to stop some CPUs. @@ -234,7 +206,6 @@ void crash_kexec_secondary(struct pt_regs *regs) } #else /* ! CONFIG_SMP */ -static inline void crash_kexec_wait_realmode(int cpu) {} static void crash_kexec_prepare_cpus(int cpu) { @@ -257,6 +228,36 @@ void crash_kexec_secondary(struct pt_regs *regs) } #endif /* CONFIG_SMP */ +/* wait for all the CPUs to hit real mode but timeout if they don't come in */ +#if defined(CONFIG_SMP) && defined(CONFIG_PPC_STD_MMU_64) +static void crash_kexec_wait_realmode(int cpu) +{ + unsigned int msecs; + int i; + + msecs = 10000; + for (i=0; i < NR_CPUS && msecs > 0; i++) { + if (i == cpu) + continue; + + while (paca[i].kexec_state < KEXEC_STATE_REAL_MODE) { + barrier(); + if (!cpu_possible(i)) { + break; + } + if (!cpu_online(i)) { + break; + } + msecs--; + mdelay(1); + } + } + mb(); +} +#else +static inline void crash_kexec_wait_realmode(int cpu) {} +#endif /* CONFIG_SMP && CONFIG_PPC_STD_MMU_64 */ + /* * Register a function to be called on shutdown. Only use this if you * can't reset your device in the second kernel. |