diff options
Diffstat (limited to 'samples/hw_breakpoint/data_breakpoint.c')
| -rw-r--r-- | samples/hw_breakpoint/data_breakpoint.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/samples/hw_breakpoint/data_breakpoint.c b/samples/hw_breakpoint/data_breakpoint.c index 418c46fe5ffc..fbb03b66dcbd 100644 --- a/samples/hw_breakpoint/data_breakpoint.c +++ b/samples/hw_breakpoint/data_breakpoint.c @@ -21,7 +21,7 @@ #include <linux/perf_event.h> #include <linux/hw_breakpoint.h> -struct perf_event * __percpu *sample_hbp; +static struct perf_event * __percpu *sample_hbp; static char ksym_name[KSYM_NAME_LEN] = "jiffies"; module_param_string(ksym, ksym_name, KSYM_NAME_LEN, S_IRUGO); @@ -52,8 +52,8 @@ static int __init hw_break_module_init(void) attr.bp_type = HW_BREAKPOINT_W; sample_hbp = register_wide_hw_breakpoint(&attr, sample_hbp_handler, NULL); - if (IS_ERR((void __force *)sample_hbp)) { - ret = PTR_ERR((void __force *)sample_hbp); + if (IS_ERR_PCPU(sample_hbp)) { + ret = PTR_ERR_PCPU(sample_hbp); goto fail; } @@ -70,7 +70,9 @@ fail: static void __exit hw_break_module_exit(void) { unregister_wide_hw_breakpoint(sample_hbp); - symbol_put(ksym_name); +#ifdef CONFIG_MODULE_UNLOAD + __symbol_put(ksym_name); +#endif printk(KERN_INFO "HW Breakpoint for %s write uninstalled\n", ksym_name); } |