diff options
author | Pekka J Enberg <penberg@cs.helsinki.fi> | 2008-12-19 12:08:39 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-12-19 16:29:34 +0100 |
commit | 213cc060797378059a28ebc5c539f3e9a80160bd (patch) | |
tree | e159f9fae35ca59fe2c02e905c2b4b91881d865c | |
parent | 30cd324e9787ccc9a5ede59742d5409857550692 (diff) | |
download | kernel_samsung_smdk4412-213cc060797378059a28ebc5c539f3e9a80160bd.zip kernel_samsung_smdk4412-213cc060797378059a28ebc5c539f3e9a80160bd.tar.gz kernel_samsung_smdk4412-213cc060797378059a28ebc5c539f3e9a80160bd.tar.bz2 |
ftrace: introduce tracing_reset_online_cpus() helper
Impact: cleanup
This patch factors out common code from multiple tracers into a
tracing_reset_online_cpus() function and converts the tracers to use it.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r-- | kernel/trace/trace.c | 10 | ||||
-rw-r--r-- | kernel/trace/trace.h | 1 | ||||
-rw-r--r-- | kernel/trace/trace_boot.c | 12 | ||||
-rw-r--r-- | kernel/trace/trace_functions.c | 14 | ||||
-rw-r--r-- | kernel/trace/trace_hw_branches.c | 14 | ||||
-rw-r--r-- | kernel/trace/trace_mmiotrace.c | 6 | ||||
-rw-r--r-- | kernel/trace/trace_sched_switch.c | 14 | ||||
-rw-r--r-- | kernel/trace/trace_sysprof.c | 12 |
8 files changed, 20 insertions, 63 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 0eb6d48..79db26e 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -679,6 +679,16 @@ void tracing_reset(struct trace_array *tr, int cpu) ftrace_enable_cpu(); } +void tracing_reset_online_cpus(struct trace_array *tr) +{ + int cpu; + + tr->time_start = ftrace_now(tr->cpu); + + for_each_online_cpu(cpu) + tracing_reset(tr, cpu); +} + #define SAVED_CMDLINES 128 static unsigned map_pid_to_cmdline[PID_MAX_DEFAULT+1]; static unsigned map_cmdline_to_pid[SAVED_CMDLINES]; diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index fc75dce..cc7a4f8 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -374,6 +374,7 @@ struct trace_iterator { int tracing_is_enabled(void); void trace_wake_up(void); void tracing_reset(struct trace_array *tr, int cpu); +void tracing_reset_online_cpus(struct trace_array *tr); int tracing_open_generic(struct inode *inode, struct file *filp); struct dentry *tracing_init_dentry(void); void init_tracer_sysprof_debugfs(struct dentry *d_tracer); diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c index a4fa2c5..3ccebde 100644 --- a/kernel/trace/trace_boot.c +++ b/kernel/trace/trace_boot.c @@ -37,16 +37,6 @@ void disable_boot_trace(void) tracing_stop_sched_switch_record(); } -static void reset_boot_trace(struct trace_array *tr) -{ - int cpu; - - tr->time_start = ftrace_now(tr->cpu); - - for_each_online_cpu(cpu) - tracing_reset(tr, cpu); -} - static int boot_trace_init(struct trace_array *tr) { int cpu; @@ -130,7 +120,7 @@ struct tracer boot_tracer __read_mostly = { .name = "initcall", .init = boot_trace_init, - .reset = reset_boot_trace, + .reset = tracing_reset_online_cpus, .print_line = initcall_print_line, }; diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c index e74f6d0..9236d7e 100644 --- a/kernel/trace/trace_functions.c +++ b/kernel/trace/trace_functions.c @@ -16,20 +16,10 @@ #include "trace.h" -static void function_reset(struct trace_array *tr) -{ - int cpu; - - tr->time_start = ftrace_now(tr->cpu); - - for_each_online_cpu(cpu) - tracing_reset(tr, cpu); -} - static void start_function_trace(struct trace_array *tr) { tr->cpu = get_cpu(); - function_reset(tr); + tracing_reset_online_cpus(tr); put_cpu(); tracing_start_cmdline_record(); @@ -55,7 +45,7 @@ static void function_trace_reset(struct trace_array *tr) static void function_trace_start(struct trace_array *tr) { - function_reset(tr); + tracing_reset_online_cpus(tr); } static struct tracer function_trace __read_mostly = diff --git a/kernel/trace/trace_hw_branches.c b/kernel/trace/trace_hw_branches.c index ee29e01..b6a3e20 100644 --- a/kernel/trace/trace_hw_branches.c +++ b/kernel/trace/trace_hw_branches.c @@ -25,16 +25,6 @@ static DEFINE_PER_CPU(unsigned char[SIZEOF_BTS], buffer); #define this_buffer per_cpu(buffer, smp_processor_id()) -static void bts_trace_reset(struct trace_array *tr) -{ - int cpu; - - tr->time_start = ftrace_now(tr->cpu); - - for_each_online_cpu(cpu) - tracing_reset(tr, cpu); -} - static void bts_trace_start_cpu(void *arg) { if (this_tracer) @@ -54,7 +44,7 @@ static void bts_trace_start(struct trace_array *tr) { int cpu; - bts_trace_reset(tr); + tracing_reset_online_cpus(tr); for_each_cpu_mask(cpu, cpu_possible_map) smp_call_function_single(cpu, bts_trace_start_cpu, NULL, 1); @@ -78,7 +68,7 @@ static void bts_trace_stop(struct trace_array *tr) static int bts_trace_init(struct trace_array *tr) { - bts_trace_reset(tr); + tracing_reset_online_cpus(tr); bts_trace_start(tr); return 0; diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c index 2fb6da6..fffcb06 100644 --- a/kernel/trace/trace_mmiotrace.c +++ b/kernel/trace/trace_mmiotrace.c @@ -22,14 +22,10 @@ static unsigned long prev_overruns; static void mmio_reset_data(struct trace_array *tr) { - int cpu; - overrun_detected = false; prev_overruns = 0; - tr->time_start = ftrace_now(tr->cpu); - for_each_online_cpu(cpu) - tracing_reset(tr, cpu); + tracing_reset_online_cpus(tr); } static int mmio_trace_init(struct trace_array *tr) diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c index 781d72e..add2c1f 100644 --- a/kernel/trace/trace_sched_switch.c +++ b/kernel/trace/trace_sched_switch.c @@ -72,16 +72,6 @@ probe_sched_wakeup(struct rq *__rq, struct task_struct *wakee) local_irq_restore(flags); } -static void sched_switch_reset(struct trace_array *tr) -{ - int cpu; - - tr->time_start = ftrace_now(tr->cpu); - - for_each_online_cpu(cpu) - tracing_reset(tr, cpu); -} - static int tracing_sched_register(void) { int ret; @@ -197,7 +187,7 @@ void tracing_sched_switch_assign_trace(struct trace_array *tr) static void start_sched_trace(struct trace_array *tr) { - sched_switch_reset(tr); + tracing_reset_online_cpus(tr); tracing_start_sched_switch_record(); } @@ -221,7 +211,7 @@ static void sched_switch_trace_reset(struct trace_array *tr) static void sched_switch_trace_start(struct trace_array *tr) { - sched_switch_reset(tr); + tracing_reset_online_cpus(tr); tracing_start_sched_switch(); } diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c index 54960ed..01becf1 100644 --- a/kernel/trace/trace_sysprof.c +++ b/kernel/trace/trace_sysprof.c @@ -234,20 +234,10 @@ static void stop_stack_timers(void) stop_stack_timer(cpu); } -static void stack_reset(struct trace_array *tr) -{ - int cpu; - - tr->time_start = ftrace_now(tr->cpu); - - for_each_online_cpu(cpu) - tracing_reset(tr, cpu); -} - static void start_stack_trace(struct trace_array *tr) { mutex_lock(&sample_timer_lock); - stack_reset(tr); + tracing_reset_online_cpus(tr); start_stack_timers(); tracer_enabled = 1; mutex_unlock(&sample_timer_lock); |