iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

blackfin: kgdb: call generic_exec_single() directly

Browse Source 
Current generic API smp_call_function_single() is changed to avoid raise IPI
and call function in IPI handler on the same core which is necessary to support
KGDB switch master core in SMP case, so call generic_exec_single() directly
instead of smp_call_function_single().

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
This commit is contained in:
Sonic Zhang 2012-11-01 17:07:09 +08:00 committed by Bob Liu
parent f1a1d52508
commit 1439d030b9
1 changed files with 11 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/blackfin/kernel/kgdb.c
View File

@ -329,6 +329,9 @@ static void bfin_disable_hw_debug(struct pt_regs *regs)
}
#ifdef CONFIG_SMP
extern void generic_exec_single(int cpu, struct call_single_data *data, int wait);
static struct call_single_data kgdb_smp_ipi_data[NR_CPUS];
void kgdb_passive_cpu_callback(void *info)
{
kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
@ -336,12 +339,18 @@ void kgdb_passive_cpu_callback(void *info)
void kgdb_roundup_cpus(unsigned long flags)
{
smp_call_function(kgdb_passive_cpu_callback, NULL, 0);
unsigned int cpu;
for (cpu = cpumask_first(cpu_online_mask); cpu < nr_cpu_ids;
cpu = cpumask_next(cpu, cpu_online_mask)) {
kgdb_smp_ipi_data[cpu].func = kgdb_passive_cpu_callback;
generic_exec_single(cpu, &kgdb_smp_ipi_data[cpu], 0);
}
}
void kgdb_roundup_cpu(int cpu, unsigned long flags)
{
smp_call_function_single(cpu, kgdb_passive_cpu_callback, NULL, 0);
generic_exec_single(cpu, &kgdb_smp_ipi_data[cpu], 0);
}
#endif