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authorLinus Torvalds <torvalds@linux-foundation.org>2019-01-01 15:38:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-01-01 15:38:14 -0800
commitfcf010449ebe1db0cb68b2c6410972a782f2bd14 (patch)
tree56707e5d99776025aa5ffaf27cd97ca924622d36 /arch/arc
parentfbea8c7c793397cdf4ba53a32f99b656467b7c7f (diff)
parentcc0282975b3f887005c380adcf0af95915f0c1bb (diff)
downloadlinux-fcf010449ebe1db0cb68b2c6410972a782f2bd14.tar.gz
Merge tag 'kgdb-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux
Pull kgdb updates from Daniel Thompson: "Mostly clean ups although while Doug's was chasing down a odd lockdep warning he also did some work to improved debugger resilience when some CPUs fail to respond to the round up request. The main changes are: - Fixing a lockdep warning on architectures that cannot use an NMI for the round up plus related changes to make CPU round up and all CPU backtrace more resilient. - Constify the arch ops tables - A couple of other small clean ups Two of the three patchsets here include changes that spill over into arch/. Changes in the arch space are relatively narrow in scope (and directly related to kgdb). Didn't get comprehensive acks but all impacted maintainers were Cc:ed in good time" * tag 'kgdb-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux: kgdb/treewide: constify struct kgdb_arch arch_kgdb_ops mips/kgdb: prepare arch_kgdb_ops for constness kdb: use bool for binary state indicators kdb: Don't back trace on a cpu that didn't round up kgdb: Don't round up a CPU that failed rounding up before kgdb: Fix kgdb_roundup_cpus() for arches who used smp_call_function() kgdb: Remove irq flags from roundup
Diffstat (limited to 'arch/arc')
-rw-r--r--arch/arc/kernel/kgdb.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/arc/kernel/kgdb.c b/arch/arc/kernel/kgdb.c
index 9a3c34af2ae8..96bca9963c63 100644
--- a/arch/arc/kernel/kgdb.c
+++ b/arch/arc/kernel/kgdb.c
@@ -192,19 +192,13 @@ void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long ip)
instruction_pointer(regs) = ip;
}
-static void kgdb_call_nmi_hook(void *ignored)
+void kgdb_call_nmi_hook(void *ignored)
{
+ /* Default implementation passes get_irq_regs() but we don't */
kgdb_nmicallback(raw_smp_processor_id(), NULL);
}
-void kgdb_roundup_cpus(unsigned long flags)
-{
- local_irq_enable();
- smp_call_function(kgdb_call_nmi_hook, NULL, 0);
- local_irq_disable();
-}
-
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
/* breakpoint instruction: TRAP_S 0x3 */
#ifdef CONFIG_CPU_BIG_ENDIAN
.gdb_bpt_instr = {0x78, 0x7e},