diff options
| author | Marcin Nowakowski <marcin.nowakowski@imgtec.com> | 2016-12-02 11:58:28 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2017-01-03 18:34:44 +0300 |
| commit | c83c2eed67e578576acf08611bfb630bd199714b (patch) | |
| tree | aa4ba36a2f1ca8cc8a6057f257a57c81e6669281 | |
| parent | 109c32ffd89d64dd99a775f2f50443bee38b63e9 (diff) | |
| download | linux-c83c2eed67e578576acf08611bfb630bd199714b.tar.xz | |
MIPS: kexec: remove SMP_DUMP
SMP_DUMP has been added as a new IPI signal when kexec support was added
for Cavium Octeon CPUs ('commit 7aa1c8f47e7e ("MIPS: kdump: Add support")'.
However, the new signal doesn't appear to ever have a proper handler
added (octeon_message_functions[] array has an empty handler for it),
and generic IPI handlers now trigger a BUG() on unhandled signal.
As the method is unused remove it completely and replace its only
invocation with a smp_call_function().
[ralf@linux-mips.org: Renumber SMP_ASK_C0COUNT to avoid numbering gaps.]
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14630/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/include/asm/smp.h | 8 | ||||
| -rw-r--r-- | arch/mips/kernel/crash.c | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/smp.c | 17 |
3 files changed, 2 insertions, 25 deletions
diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h index f8c5faa93584..98a117a05fbc 100644 --- a/arch/mips/include/asm/smp.h +++ b/arch/mips/include/asm/smp.h @@ -42,9 +42,7 @@ extern int __cpu_logical_map[NR_CPUS]; #define SMP_CALL_FUNCTION 0x2 /* Octeon - Tell another core to flush its icache */ #define SMP_ICACHE_FLUSH 0x4 -/* Used by kexec crashdump to save all cpu's state */ -#define SMP_DUMP 0x8 -#define SMP_ASK_C0COUNT 0x10 +#define SMP_ASK_C0COUNT 0x8 /* Mask of CPUs which are currently definitely operating coherently */ extern cpumask_t cpu_coherent_mask; @@ -111,8 +109,4 @@ static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask) mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION); } -#if defined(CONFIG_KEXEC) -extern void (*dump_ipi_function_ptr)(void *); -void dump_send_ipi(void (*dump_ipi_callback)(void *)); -#endif #endif /* __ASM_SMP_H */ diff --git a/arch/mips/kernel/crash.c b/arch/mips/kernel/crash.c index 1723b1762297..5a71518be0f1 100644 --- a/arch/mips/kernel/crash.c +++ b/arch/mips/kernel/crash.c @@ -56,7 +56,7 @@ static void crash_kexec_prepare_cpus(void) ncpus = num_online_cpus() - 1;/* Excluding the panic cpu */ - dump_send_ipi(crash_shutdown_secondary); + smp_call_function(crash_shutdown_secondary, NULL, 0); smp_wmb(); /* diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 0a831f63b0ec..8c60a296294c 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -638,23 +638,6 @@ void flush_tlb_one(unsigned long vaddr) EXPORT_SYMBOL(flush_tlb_page); EXPORT_SYMBOL(flush_tlb_one); -#if defined(CONFIG_KEXEC) -void (*dump_ipi_function_ptr)(void *) = NULL; -void dump_send_ipi(void (*dump_ipi_callback)(void *)) -{ - int i; - int cpu = smp_processor_id(); - - dump_ipi_function_ptr = dump_ipi_callback; - smp_mb(); - for_each_online_cpu(i) - if (i != cpu) - mp_ops->send_ipi_single(i, SMP_DUMP); - -} -EXPORT_SYMBOL(dump_send_ipi); -#endif - #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST static DEFINE_PER_CPU(atomic_t, tick_broadcast_count); |