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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-07-28 20:01:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-07-28 20:01:26 -0700 |
| commit | 540ad6b62b3a188a53b51cac81d8a60d40e29fbd (patch) | |
| tree | 554d3905c18c711ee2b9853dca2b45d274542eb7 /arch/x86/kernel/kgdb.c | |
| parent | 2fa82e1f10949dbde97fe13c269df2321c0d0715 (diff) | |
| parent | ba773f7c510c0b252145933926c636c439889207 (diff) | |
| download | linux-540ad6b62b3a188a53b51cac81d8a60d40e29fbd.tar.bz2 | |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
x86,kgdb: Fix hw breakpoint regression
Diffstat (limited to 'arch/x86/kernel/kgdb.c')
| -rw-r--r-- | arch/x86/kernel/kgdb.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index 4f4af75b9482..01ab17ae2ae7 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -572,7 +572,6 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd) return NOTIFY_STOP; } -#ifdef CONFIG_KGDB_LOW_LEVEL_TRAP int kgdb_ll_trap(int cmd, const char *str, struct pt_regs *regs, long err, int trap, int sig) { @@ -590,7 +589,6 @@ int kgdb_ll_trap(int cmd, const char *str, return __kgdb_notify(&args, cmd); } -#endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */ static int kgdb_notify(struct notifier_block *self, unsigned long cmd, void *ptr) @@ -625,6 +623,12 @@ int kgdb_arch_init(void) return register_die_notifier(&kgdb_notifier); } +static void kgdb_hw_overflow_handler(struct perf_event *event, int nmi, + struct perf_sample_data *data, struct pt_regs *regs) +{ + kgdb_ll_trap(DIE_DEBUG, "debug", regs, 0, 0, SIGTRAP); +} + void kgdb_arch_late(void) { int i, cpu; @@ -655,6 +659,7 @@ void kgdb_arch_late(void) for_each_online_cpu(cpu) { pevent = per_cpu_ptr(breakinfo[i].pev, cpu); pevent[0]->hw.sample_period = 1; + pevent[0]->overflow_handler = kgdb_hw_overflow_handler; if (pevent[0]->destroy != NULL) { pevent[0]->destroy = NULL; release_bp_slot(*pevent); |