diff options
| author | Jason Wessel <jason.wessel@windriver.com> | 2010-04-02 18:57:18 +0200 |
|---|---|---|
| committer | Jason Wessel <jason.wessel@windriver.com> | 2010-04-02 21:58:19 +0200 |
| commit | 4da75b9ceac6939cd76830ec9581bef5bb398ad3 (patch) | |
| tree | 5b4880b07563d13bd17753d0891aae8d8fe77e4d /kernel/kgdb.c | |
| parent | kgdb: use atomic_inc and atomic_dec instead of atomic_set (diff) | |
| download | linux-4da75b9ceac6939cd76830ec9581bef5bb398ad3.tar.xz linux-4da75b9ceac6939cd76830ec9581bef5bb398ad3.zip | |
kgdb: Turn off tracing while in the debugger
The kernel debugger should turn off kernel tracing any time the
debugger is active and restore it on resume.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/kgdb.c')
| -rw-r--r-- | kernel/kgdb.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/kgdb.c b/kernel/kgdb.c index 2f7f454605c2..11f3515ca83f 100644 --- a/kernel/kgdb.c +++ b/kernel/kgdb.c @@ -1365,6 +1365,7 @@ static int kgdb_cpu_enter(struct kgdb_state *ks, struct pt_regs *regs) int sstep_tries = 100; int error = 0; int i, cpu; + int trace_on = 0; acquirelock: /* * Interrupts will be restored by the 'trap return' code, except when @@ -1399,6 +1400,8 @@ return_normal: */ if (arch_kgdb_ops.correct_hw_break) arch_kgdb_ops.correct_hw_break(); + if (trace_on) + tracing_on(); atomic_dec(&cpu_in_kgdb[cpu]); touch_softlockup_watchdog_sync(); clocksource_touch_watchdog(); @@ -1474,6 +1477,9 @@ return_normal: kgdb_single_step = 0; kgdb_contthread = current; exception_level = 0; + trace_on = tracing_is_on(); + if (trace_on) + tracing_off(); /* Talk to debugger with gdbserial protocol */ error = gdb_serial_stub(ks); @@ -1505,6 +1511,8 @@ kgdb_restore: else kgdb_sstep_pid = 0; } + if (trace_on) + tracing_on(); /* Free kgdb_active */ atomic_set(&kgdb_active, -1); touch_softlockup_watchdog_sync(); |