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authorIngo Molnar <mingo@elte.hu>2009-04-05 19:41:22 -0400
committerIngo Molnar <mingo@elte.hu>2009-04-05 19:41:22 -0400
commit9efe21cb82b5dbe3b0b2ae4de4eccc64ecb94e95 (patch)
tree7ff8833745d2f268f897f6fa4a27263b4a572245 /kernel/trace/trace_sysprof.c
parentde18836e447c2dc30120c0919b8db8ddc0401cc4 (diff)
parent0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c (diff)
Merge branch 'linus' into irq/threaded
Conflicts: include/linux/irq.h kernel/irq/handle.c
Diffstat (limited to 'kernel/trace/trace_sysprof.c')
-rw-r--r--kernel/trace/trace_sysprof.c23
1 files changed, 10 insertions, 13 deletions
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index eaca5ad803f..91fd19c2149 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -88,7 +88,7 @@ static void backtrace_address(void *data, unsigned long addr, int reliable)
88 } 88 }
89} 89}
90 90
91const static struct stacktrace_ops backtrace_ops = { 91static const struct stacktrace_ops backtrace_ops = {
92 .warning = backtrace_warning, 92 .warning = backtrace_warning,
93 .warning_symbol = backtrace_warning_symbol, 93 .warning_symbol = backtrace_warning_symbol,
94 .stack = backtrace_stack, 94 .stack = backtrace_stack,
@@ -226,15 +226,6 @@ static void stop_stack_timers(void)
226 stop_stack_timer(cpu); 226 stop_stack_timer(cpu);
227} 227}
228 228
229static void start_stack_trace(struct trace_array *tr)
230{
231 mutex_lock(&sample_timer_lock);
232 tracing_reset_online_cpus(tr);
233 start_stack_timers();
234 tracer_enabled = 1;
235 mutex_unlock(&sample_timer_lock);
236}
237
238static void stop_stack_trace(struct trace_array *tr) 229static void stop_stack_trace(struct trace_array *tr)
239{ 230{
240 mutex_lock(&sample_timer_lock); 231 mutex_lock(&sample_timer_lock);
@@ -247,12 +238,18 @@ static int stack_trace_init(struct trace_array *tr)
247{ 238{
248 sysprof_trace = tr; 239 sysprof_trace = tr;
249 240
250 start_stack_trace(tr); 241 tracing_start_cmdline_record();
242
243 mutex_lock(&sample_timer_lock);
244 start_stack_timers();
245 tracer_enabled = 1;
246 mutex_unlock(&sample_timer_lock);
251 return 0; 247 return 0;
252} 248}
253 249
254static void stack_trace_reset(struct trace_array *tr) 250static void stack_trace_reset(struct trace_array *tr)
255{ 251{
252 tracing_stop_cmdline_record();
256 stop_stack_trace(tr); 253 stop_stack_trace(tr);
257} 254}
258 255
@@ -317,7 +314,7 @@ sysprof_sample_write(struct file *filp, const char __user *ubuf,
317 return cnt; 314 return cnt;
318} 315}
319 316
320static struct file_operations sysprof_sample_fops = { 317static const struct file_operations sysprof_sample_fops = {
321 .read = sysprof_sample_read, 318 .read = sysprof_sample_read,
322 .write = sysprof_sample_write, 319 .write = sysprof_sample_write,
323}; 320};
@@ -330,5 +327,5 @@ void init_tracer_sysprof_debugfs(struct dentry *d_tracer)
330 d_tracer, NULL, &sysprof_sample_fops); 327 d_tracer, NULL, &sysprof_sample_fops);
331 if (entry) 328 if (entry)
332 return; 329 return;
333 pr_warning("Could not create debugfs 'dyn_ftrace_total_info' entry\n"); 330 pr_warning("Could not create debugfs 'sysprof_sample_period' entry\n");
334} 331}