diff options
author | Lee Jones <lee.jones@linaro.org> | 2012-01-12 12:50:11 +0000 |
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committer | Lee Jones <lee.jones@linaro.org> | 2012-01-12 12:50:11 +0000 |
commit | 72108d578689febd3579bf16be470328ded6c6d9 (patch) | |
tree | cc36ad5306ce823f8e98956c8f048f48017be3cc /drivers/oprofile/oprof.c | |
parent | 330f78a83c1f47055427e10a68733af77b2cbac8 (diff) | |
parent | 2150f72fe35397cc6d6ce39866bd0462cfbcc916 (diff) |
Automatically merging tracking-igloo_kernel-other into merging-stable-linaro-ux500-3.1stable-linaro-ux500-3.1
Conflicting files:
Diffstat (limited to 'drivers/oprofile/oprof.c')
-rw-r--r-- | drivers/oprofile/oprof.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c index dccd8636095..f8c752e408a 100644 --- a/drivers/oprofile/oprof.c +++ b/drivers/oprofile/oprof.c @@ -239,26 +239,45 @@ int oprofile_set_ulong(unsigned long *addr, unsigned long val) return err; } +static int timer_mode; + static int __init oprofile_init(void) { int err; + /* always init architecture to setup backtrace support */ err = oprofile_arch_init(&oprofile_ops); - if (err < 0 || timer) { - printk(KERN_INFO "oprofile: using timer interrupt.\n"); + + timer_mode = err || timer; /* fall back to timer mode on errors */ + if (timer_mode) { + if (!err) + oprofile_arch_exit(); err = oprofile_timer_init(&oprofile_ops); if (err) return err; } - return oprofilefs_register(); + + err = oprofilefs_register(); + if (!err) + return 0; + + /* failed */ + if (timer_mode) + oprofile_timer_exit(); + else + oprofile_arch_exit(); + + return err; } static void __exit oprofile_exit(void) { - oprofile_timer_exit(); oprofilefs_unregister(); - oprofile_arch_exit(); + if (timer_mode) + oprofile_timer_exit(); + else + oprofile_arch_exit(); } |