mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-11-01 17:08:10 +00:00
Code Issues Releases Wiki Activity

Blackfin: kgdb: disable preempt schedule when running single step in kgdb

Browse source 
Otherwise, gdb continue operation after a breakpoint is hit may trap
into endless breakpoint.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Sonic Zhang 2010-11-17 06:52:39 +00:00 committed by Mike Frysinger
parent 900de05182
commit b68233e7f0
1 changed files with 7 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
arch/blackfin/kernel/kgdb.c
View file

@ -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;