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kgdb/kdb: Fix no KDB config problem 

Some code added to the debug_core module had KDB dependencies
that it shouldn't have.  Move the KDB dependent REASON back to
the caller to remove the dependency in the debug core code.

Update the call from the UV NMI handler to conform to the new
interface.

Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Hedi Berriche <hedi@sgi.com>
Cc: Russ Anderson <rja@sgi.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Link: http://lkml.kernel.org/r/20140114162551.318251993@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Mike Travis 2014-01-14 10:25:52 -06:00 committed by Ingo Molnar
parent 981c3a4ff8
commit fc8b13740b
4 changed files with 6 additions and 6 deletions
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2
arch/x86/platform/uv/uv_nmi.c
View File

@ -546,7 +546,7 @@ static void uv_call_kdb(int cpu, struct pt_regs *regs, int master)
if (master) {
/* call KGDB NMI handler as MASTER */
ret = kgdb_nmicallin(cpu, X86_TRAP_NMI, regs,
&uv_nmi_slave_continue);
KDB_REASON_SYSTEM_NMI, &uv_nmi_slave_continue);
if (ret) {
pr_alert("KDB returned error, is kgdboc set?\n");
atomic_set(&uv_nmi_slave_continue, SLAVE_EXIT);

3
include/linux/kgdb.h
View File

@ -310,7 +310,8 @@ extern int
kgdb_handle_exception(int ex_vector, int signo, int err_code,
struct pt_regs *regs);
extern int kgdb_nmicallback(int cpu, void *regs);
extern int kgdb_nmicallin(int cpu, int trapnr, void *regs, atomic_t *snd_rdy);
extern int kgdb_nmicallin(int cpu, int trapnr, void *regs, int err_code,
atomic_t *snd_rdy);
extern void gdbstub_exit(int status);
extern int kgdb_single_step;

5
kernel/debug/debug_core.c
View File

@ -736,7 +736,8 @@ int kgdb_nmicallback(int cpu, void *regs)
return 1;
}
int kgdb_nmicallin(int cpu, int trapnr, void *regs, atomic_t *send_ready)
int kgdb_nmicallin(int cpu, int trapnr, void *regs, int err_code,
atomic_t *send_ready)
{
#ifdef CONFIG_SMP
if (!kgdb_io_ready(0) || !send_ready)
@ -750,7 +751,7 @@ int kgdb_nmicallin(int cpu, int trapnr, void *regs, atomic_t *send_ready)
ks->cpu = cpu;
ks->ex_vector = trapnr;
ks->signo = SIGTRAP;
ks->err_code = KGDB_KDB_REASON_SYSTEM_NMI;
ks->err_code = err_code;
ks->linux_regs = regs;
ks->send_ready = send_ready;
kgdb_cpu_enter(ks, regs, DCPU_WANT_MASTER);

2
kernel/debug/debug_core.h
View File

@ -75,13 +75,11 @@ extern int kdb_stub(struct kgdb_state *ks);
extern int kdb_parse(const char *cmdstr);
extern int kdb_common_init_state(struct kgdb_state *ks);
extern int kdb_common_deinit_state(void);
#define KGDB_KDB_REASON_SYSTEM_NMI KDB_REASON_SYSTEM_NMI
#else /* ! CONFIG_KGDB_KDB */
static inline int kdb_stub(struct kgdb_state *ks)
{
return DBG_PASS_EVENT;
}
#define KGDB_KDB_REASON_SYSTEM_NMI 0
#endif /* CONFIG_KGDB_KDB */
#endif /* _DEBUG_CORE_H_ */