The kernel debugger should turn off kernel tracing any time the debugger is active and restore it on resume.
CC: Steven Rostedt <[email protected]> Signed-off-by: Jason Wessel <[email protected]> --- kernel/debug/debug_core.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c index ed42d9e..3d36d9e 100644 --- a/kernel/debug/debug_core.c +++ b/kernel/debug/debug_core.c @@ -474,6 +474,7 @@ static int kgdb_cpu_enter(struct kgdb_state *ks, struct pt_regs *regs) int sstep_tries = 100; int error; int i, cpu; + int trace_on = 0; acquirelock: /* * Interrupts will be restored by the 'trap return' code, except when @@ -518,6 +519,8 @@ return_normal: */ if (arch_kgdb_ops.correct_hw_break) arch_kgdb_ops.correct_hw_break(); + if (trace_on) + tracing_on(); atomic_set(&cpu_in_kgdb[cpu], 0); touch_softlockup_watchdog_sync(); clocksource_touch_watchdog(); @@ -592,6 +595,9 @@ return_normal: kgdb_single_step = 0; kgdb_contthread = current; exception_level = 0; + trace_on = tracing_is_on(); + if (trace_on) + tracing_off(); while (1) { cpu_master_loop: @@ -645,6 +651,8 @@ kgdb_restore: else kgdb_sstep_pid = 0; } + if (trace_on) + tracing_on(); /* Free kgdb_active */ atomic_set(&kgdb_active, -1); touch_softlockup_watchdog_sync(); -- 1.6.4.rc1 ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Kgdb-bugreport mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport
