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| author | Ingo Molnar <mingo@kernel.org> | 2015-02-26 12:24:50 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-02-26 12:24:50 +0100 |
| commit | e9e4e44309f866b115d08ab4a54834008c50a8a4 (patch) | |
| tree | ae9f91e682a4d6592ef263f30a4a0b1a862b7987 /kernel/debug/debug_core.c | |
| parent | Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/... (diff) | |
| parent | Linux 4.0-rc1 (diff) | |
| download | linux-e9e4e44309f866b115d08ab4a54834008c50a8a4.tar.gz linux-e9e4e44309f866b115d08ab4a54834008c50a8a4.zip | |
Merge tag 'v4.0-rc1' into perf/core, to refresh the tree
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/debug/debug_core.c')
| -rw-r--r-- | kernel/debug/debug_core.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c index 07ce18ca71e0..0874e2edd275 100644 --- a/kernel/debug/debug_core.c +++ b/kernel/debug/debug_core.c @@ -604,7 +604,7 @@ return_normal: online_cpus) cpu_relax(); if (!time_left) - pr_crit("KGDB: Timed out waiting for secondary CPUs.\n"); + pr_crit("Timed out waiting for secondary CPUs.\n"); /* * At this point the primary processor is completely @@ -696,6 +696,14 @@ kgdb_handle_exception(int evector, int signo, int ecode, struct pt_regs *regs) if (arch_kgdb_ops.enable_nmi) arch_kgdb_ops.enable_nmi(0); + /* + * Avoid entering the debugger if we were triggered due to an oops + * but panic_timeout indicates the system should automatically + * reboot on panic. We don't want to get stuck waiting for input + * on such systems, especially if its "just" an oops. + */ + if (signo != SIGTRAP && panic_timeout) + return 1; memset(ks, 0, sizeof(struct kgdb_state)); ks->cpu = raw_smp_processor_id(); @@ -828,6 +836,15 @@ static int kgdb_panic_event(struct notifier_block *self, unsigned long val, void *data) { + /* + * Avoid entering the debugger if we were triggered due to a panic + * We don't want to get stuck waiting for input from user in such case. + * panic_timeout indicates the system should automatically + * reboot on panic. + */ + if (panic_timeout) + return NOTIFY_DONE; + if (dbg_kdb_mode) kdb_printf("PANIC: %s\n", (char *)data); kgdb_breakpoint(); |