From b68233e7f0126dfe59e1a064da9e37827c1f35ec Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Wed, 17 Nov 2010 06:52:39 +0000 Subject: Blackfin: kgdb: disable preempt schedule when running single step in kgdb Otherwise, gdb continue operation after a breakpoint is hit may trap into endless breakpoint. Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger --- arch/blackfin/kernel/kgdb.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/blackfin/kernel/kgdb.c b/arch/blackfin/kernel/kgdb.c index e89ef34..eb92592 100644 --- a/arch/blackfin/kernel/kgdb.c +++ b/arch/blackfin/kernel/kgdb.c @@ -347,15 +347,20 @@ void kgdb_roundup_cpu(int cpu, unsigned long flags) #ifdef CONFIG_IPIPE static unsigned long kgdb_arch_imask; +#endif void kgdb_post_primary_code(struct pt_regs *regs, int e_vector, int err_code) { + if (kgdb_single_step) + preempt_enable(); + +#ifdef CONFIG_IPIPE if (kgdb_arch_imask) { cpu_pda[raw_smp_processor_id()].ex_imask = kgdb_arch_imask; kgdb_arch_imask = 0; } -} #endif +} int kgdb_arch_handle_exception(int vector, int signo, int err_code, char *remcom_in_buffer, @@ -401,6 +406,7 @@ int kgdb_arch_handle_exception(int vector, int signo, */ kgdb_single_step = i + 1; + preempt_disable(); #ifdef CONFIG_IPIPE kgdb_arch_imask = cpu_pda[raw_smp_processor_id()].ex_imask; cpu_pda[raw_smp_processor_id()].ex_imask = 0; -- cgit v1.1