Merge branch 'master' into percpu
[sfrench/cifs-2.6.git] / kernel / trace / trace.c
index b808177af8168299b28fec9fe8d70bd9767936b0..ab2bbb0e942958e70812b43a24014255ea00b163 100644 (file)
@@ -12,7 +12,7 @@
  *  Copyright (C) 2004 William Lee Irwin III
  */
 #include <linux/ring_buffer.h>
-#include <linux/utsrelease.h>
+#include <generated/utsrelease.h>
 #include <linux/stacktrace.h>
 #include <linux/writeback.h>
 #include <linux/kallsyms.h>
@@ -129,7 +129,7 @@ static int tracing_set_tracer(const char *buf);
 static char bootup_tracer_buf[MAX_TRACER_SIZE] __initdata;
 static char *default_bootup_tracer;
 
-static int __init set_ftrace(char *str)
+static int __init set_cmdline_ftrace(char *str)
 {
        strncpy(bootup_tracer_buf, str, MAX_TRACER_SIZE);
        default_bootup_tracer = bootup_tracer_buf;
@@ -137,7 +137,7 @@ static int __init set_ftrace(char *str)
        ring_buffer_expanded = 1;
        return 1;
 }
-__setup("ftrace=", set_ftrace);
+__setup("ftrace=", set_cmdline_ftrace);
 
 static int __init set_ftrace_dump_on_oops(char *str)
 {
@@ -313,7 +313,6 @@ static const char *trace_options[] = {
        "bin",
        "block",
        "stacktrace",
-       "sched-tree",
        "trace_printk",
        "ftrace_preempt",
        "branch",
@@ -493,15 +492,15 @@ static ssize_t trace_seq_to_buffer(struct trace_seq *s, void *buf, size_t cnt)
  * protected by per_cpu spinlocks. But the action of the swap
  * needs its own lock.
  *
- * This is defined as a raw_spinlock_t in order to help
+ * This is defined as a arch_spinlock_t in order to help
  * with performance when lockdep debugging is enabled.
  *
  * It is also used in other places outside the update_max_tr
  * so it needs to be defined outside of the
  * CONFIG_TRACER_MAX_TRACE.
  */
-static raw_spinlock_t ftrace_max_lock =
-       (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
+static arch_spinlock_t ftrace_max_lock =
+       (arch_spinlock_t)__ARCH_SPIN_LOCK_UNLOCKED;
 
 #ifdef CONFIG_TRACER_MAX_TRACE
 unsigned long __read_mostly    tracing_max_latency;
@@ -555,13 +554,13 @@ update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu)
                return;
 
        WARN_ON_ONCE(!irqs_disabled());
-       __raw_spin_lock(&ftrace_max_lock);
+       arch_spin_lock(&ftrace_max_lock);
 
        tr->buffer = max_tr.buffer;
        max_tr.buffer = buf;
 
        __update_max_tr(tr, tsk, cpu);
-       __raw_spin_unlock(&ftrace_max_lock);
+       arch_spin_unlock(&ftrace_max_lock);
 }
 
 /**
@@ -581,7 +580,7 @@ update_max_tr_single(struct trace_array *tr, struct task_struct *tsk, int cpu)
                return;
 
        WARN_ON_ONCE(!irqs_disabled());
-       __raw_spin_lock(&ftrace_max_lock);
+       arch_spin_lock(&ftrace_max_lock);
 
        ftrace_disable_cpu();
 
@@ -603,7 +602,7 @@ update_max_tr_single(struct trace_array *tr, struct task_struct *tsk, int cpu)
        WARN_ON_ONCE(ret && ret != -EAGAIN && ret != -EBUSY);
 
        __update_max_tr(tr, tsk, cpu);
-       __raw_spin_unlock(&ftrace_max_lock);
+       arch_spin_unlock(&ftrace_max_lock);
 }
 #endif /* CONFIG_TRACER_MAX_TRACE */
 
@@ -802,7 +801,7 @@ static unsigned map_pid_to_cmdline[PID_MAX_DEFAULT+1];
 static unsigned map_cmdline_to_pid[SAVED_CMDLINES];
 static char saved_cmdlines[SAVED_CMDLINES][TASK_COMM_LEN];
 static int cmdline_idx;
-static raw_spinlock_t trace_cmdline_lock = __RAW_SPIN_LOCK_UNLOCKED;
+static arch_spinlock_t trace_cmdline_lock = __ARCH_SPIN_LOCK_UNLOCKED;
 
 /* temporary disable recording */
 static atomic_t trace_record_cmdline_disabled __read_mostly;
@@ -915,7 +914,7 @@ static void trace_save_cmdline(struct task_struct *tsk)
         * nor do we want to disable interrupts,
         * so if we miss here, then better luck next time.
         */
-       if (!__raw_spin_trylock(&trace_cmdline_lock))
+       if (!arch_spin_trylock(&trace_cmdline_lock))
                return;
 
        idx = map_pid_to_cmdline[tsk->pid];
@@ -940,7 +939,7 @@ static void trace_save_cmdline(struct task_struct *tsk)
 
        memcpy(&saved_cmdlines[idx], tsk->comm, TASK_COMM_LEN);
 
-       __raw_spin_unlock(&trace_cmdline_lock);
+       arch_spin_unlock(&trace_cmdline_lock);
 }
 
 void trace_find_cmdline(int pid, char comm[])
@@ -958,14 +957,14 @@ void trace_find_cmdline(int pid, char comm[])
        }
 
        preempt_disable();
-       __raw_spin_lock(&trace_cmdline_lock);
+       arch_spin_lock(&trace_cmdline_lock);
        map = map_pid_to_cmdline[pid];
        if (map != NO_CMDLINE_MAP)
                strcpy(comm, saved_cmdlines[map]);
        else
                strcpy(comm, "<...>");
 
-       __raw_spin_unlock(&trace_cmdline_lock);
+       arch_spin_unlock(&trace_cmdline_lock);
        preempt_enable();
 }
 
@@ -1151,6 +1150,22 @@ void __trace_stack(struct trace_array *tr, unsigned long flags, int skip,
        __ftrace_trace_stack(tr->buffer, flags, skip, pc);
 }
 
+/**
+ * trace_dump_stack - record a stack back trace in the trace buffer
+ */
+void trace_dump_stack(void)
+{
+       unsigned long flags;
+
+       if (tracing_disabled || tracing_selftest_running)
+               return;
+
+       local_save_flags(flags);
+
+       /* skipping 3 traces, seems to get us at the caller of this function */
+       __ftrace_trace_stack(global_trace.buffer, flags, 3, preempt_count());
+}
+
 void
 ftrace_trace_userstack(struct ring_buffer *buffer, unsigned long flags, int pc)
 {
@@ -1251,8 +1266,8 @@ ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3)
  */
 int trace_vbprintk(unsigned long ip, const char *fmt, va_list args)
 {
-       static raw_spinlock_t trace_buf_lock =
-               (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
+       static arch_spinlock_t trace_buf_lock =
+               (arch_spinlock_t)__ARCH_SPIN_LOCK_UNLOCKED;
        static u32 trace_buf[TRACE_BUF_SIZE];
 
        struct ftrace_event_call *call = &event_bprint;
@@ -1283,7 +1298,7 @@ int trace_vbprintk(unsigned long ip, const char *fmt, va_list args)
 
        /* Lockdep uses trace_printk for lock tracing */
        local_irq_save(flags);
-       __raw_spin_lock(&trace_buf_lock);
+       arch_spin_lock(&trace_buf_lock);
        len = vbin_printf(trace_buf, TRACE_BUF_SIZE, fmt, args);
 
        if (len > TRACE_BUF_SIZE || len < 0)
@@ -1304,7 +1319,7 @@ int trace_vbprintk(unsigned long ip, const char *fmt, va_list args)
                ring_buffer_unlock_commit(buffer, event);
 
 out_unlock:
-       __raw_spin_unlock(&trace_buf_lock);
+       arch_spin_unlock(&trace_buf_lock);
        local_irq_restore(flags);
 
 out:
@@ -1334,7 +1349,7 @@ int trace_array_printk(struct trace_array *tr,
 int trace_array_vprintk(struct trace_array *tr,
                        unsigned long ip, const char *fmt, va_list args)
 {
-       static raw_spinlock_t trace_buf_lock = __RAW_SPIN_LOCK_UNLOCKED;
+       static arch_spinlock_t trace_buf_lock = __ARCH_SPIN_LOCK_UNLOCKED;
        static char trace_buf[TRACE_BUF_SIZE];
 
        struct ftrace_event_call *call = &event_print;
@@ -1360,12 +1375,9 @@ int trace_array_vprintk(struct trace_array *tr,
 
        pause_graph_tracing();
        raw_local_irq_save(irq_flags);
-       __raw_spin_lock(&trace_buf_lock);
+       arch_spin_lock(&trace_buf_lock);
        len = vsnprintf(trace_buf, TRACE_BUF_SIZE, fmt, args);
 
-       len = min(len, TRACE_BUF_SIZE-1);
-       trace_buf[len] = 0;
-
        size = sizeof(*entry) + len + 1;
        buffer = tr->buffer;
        event = trace_buffer_lock_reserve(buffer, TRACE_PRINT, size,
@@ -1373,15 +1385,15 @@ int trace_array_vprintk(struct trace_array *tr,
        if (!event)
                goto out_unlock;
        entry = ring_buffer_event_data(event);
-       entry->ip                       = ip;
+       entry->ip = ip;
 
        memcpy(&entry->buf, trace_buf, len);
-       entry->buf[len] = 0;
+       entry->buf[len] = '\0';
        if (!filter_check_discard(call, entry, buffer, event))
                ring_buffer_unlock_commit(buffer, event);
 
  out_unlock:
-       __raw_spin_unlock(&trace_buf_lock);
+       arch_spin_unlock(&trace_buf_lock);
        raw_local_irq_restore(irq_flags);
        unpause_graph_tracing();
  out:
@@ -1393,7 +1405,7 @@ int trace_array_vprintk(struct trace_array *tr,
 
 int trace_vprintk(unsigned long ip, const char *fmt, va_list args)
 {
-       return trace_array_printk(&global_trace, ip, fmt, args);
+       return trace_array_vprintk(&global_trace, ip, fmt, args);
 }
 EXPORT_SYMBOL_GPL(trace_vprintk);
 
@@ -1515,6 +1527,8 @@ static void *s_next(struct seq_file *m, void *v, loff_t *pos)
        int i = (int)*pos;
        void *ent;
 
+       WARN_ON_ONCE(iter->leftover);
+
        (*pos)++;
 
        /* can't go backwards */
@@ -1613,8 +1627,16 @@ static void *s_start(struct seq_file *m, loff_t *pos)
                        ;
 
        } else {
-               l = *pos - 1;
-               p = s_next(m, p, &l);
+               /*
+                * If we overflowed the seq_file before, then we want
+                * to just reuse the trace_seq buffer again.
+                */
+               if (iter->leftover)
+                       p = iter;
+               else {
+                       l = *pos - 1;
+                       p = s_next(m, p, &l);
+               }
        }
 
        trace_event_read_lock();
@@ -1922,6 +1944,7 @@ static enum print_line_t print_trace_line(struct trace_iterator *iter)
 static int s_show(struct seq_file *m, void *v)
 {
        struct trace_iterator *iter = v;
+       int ret;
 
        if (iter->ent == NULL) {
                if (iter->tr) {
@@ -1941,9 +1964,27 @@ static int s_show(struct seq_file *m, void *v)
                        if (!(trace_flags & TRACE_ITER_VERBOSE))
                                print_func_help_header(m);
                }
+       } else if (iter->leftover) {
+               /*
+                * If we filled the seq_file buffer earlier, we
+                * want to just show it now.
+                */
+               ret = trace_print_seq(m, &iter->seq);
+
+               /* ret should this time be zero, but you never know */
+               iter->leftover = ret;
+
        } else {
                print_trace_line(iter);
-               trace_print_seq(m, &iter->seq);
+               ret = trace_print_seq(m, &iter->seq);
+               /*
+                * If we overflow the seq_file buffer, then it will
+                * ask us for this data again at start up.
+                * Use that instead.
+                *  ret is 0 if seq_file write succeeded.
+                *        -1 otherwise.
+                */
+               iter->leftover = ret;
        }
 
        return 0;
@@ -2253,7 +2294,7 @@ tracing_cpumask_write(struct file *filp, const char __user *ubuf,
        mutex_lock(&tracing_cpumask_update_lock);
 
        local_irq_disable();
-       __raw_spin_lock(&ftrace_max_lock);
+       arch_spin_lock(&ftrace_max_lock);
        for_each_tracing_cpu(cpu) {
                /*
                 * Increase/decrease the disabled counter if we are
@@ -2268,7 +2309,7 @@ tracing_cpumask_write(struct file *filp, const char __user *ubuf,
                        atomic_dec(&global_trace.data[cpu]->disabled);
                }
        }
-       __raw_spin_unlock(&ftrace_max_lock);
+       arch_spin_unlock(&ftrace_max_lock);
        local_irq_enable();
 
        cpumask_copy(tracing_cpumask, tracing_cpumask_new);
@@ -2290,67 +2331,49 @@ static const struct file_operations tracing_cpumask_fops = {
        .write          = tracing_cpumask_write,
 };
 
-static ssize_t
-tracing_trace_options_read(struct file *filp, char __user *ubuf,
-                      size_t cnt, loff_t *ppos)
+static int tracing_trace_options_show(struct seq_file *m, void *v)
 {
        struct tracer_opt *trace_opts;
        u32 tracer_flags;
-       int len = 0;
-       char *buf;
-       int r = 0;
        int i;
 
-
-       /* calculate max size */
-       for (i = 0; trace_options[i]; i++) {
-               len += strlen(trace_options[i]);
-               len += 3; /* "no" and newline */
-       }
-
        mutex_lock(&trace_types_lock);
        tracer_flags = current_trace->flags->val;
        trace_opts = current_trace->flags->opts;
 
-       /*
-        * Increase the size with names of options specific
-        * of the current tracer.
-        */
-       for (i = 0; trace_opts[i].name; i++) {
-               len += strlen(trace_opts[i].name);
-               len += 3; /* "no" and newline */
-       }
-
-       /* +1 for \0 */
-       buf = kmalloc(len + 1, GFP_KERNEL);
-       if (!buf) {
-               mutex_unlock(&trace_types_lock);
-               return -ENOMEM;
-       }
-
        for (i = 0; trace_options[i]; i++) {
                if (trace_flags & (1 << i))
-                       r += sprintf(buf + r, "%s\n", trace_options[i]);
+                       seq_printf(m, "%s\n", trace_options[i]);
                else
-                       r += sprintf(buf + r, "no%s\n", trace_options[i]);
+                       seq_printf(m, "no%s\n", trace_options[i]);
        }
 
        for (i = 0; trace_opts[i].name; i++) {
                if (tracer_flags & trace_opts[i].bit)
-                       r += sprintf(buf + r, "%s\n",
-                               trace_opts[i].name);
+                       seq_printf(m, "%s\n", trace_opts[i].name);
                else
-                       r += sprintf(buf + r, "no%s\n",
-                               trace_opts[i].name);
+                       seq_printf(m, "no%s\n", trace_opts[i].name);
        }
        mutex_unlock(&trace_types_lock);
 
-       WARN_ON(r >= len + 1);
+       return 0;
+}
 
-       r = simple_read_from_buffer(ubuf, cnt, ppos, buf, r);
+static int __set_tracer_option(struct tracer *trace,
+                              struct tracer_flags *tracer_flags,
+                              struct tracer_opt *opts, int neg)
+{
+       int ret;
 
-       kfree(buf);
-       return r;
+       ret = trace->set_flag(tracer_flags->val, opts->bit, !neg);
+       if (ret)
+               return ret;
+
+       if (neg)
+               tracer_flags->val &= ~opts->bit;
+       else
+               tracer_flags->val |= opts->bit;
+       return 0;
 }
 
 /* Try to assign a tracer specific option */
@@ -2358,33 +2381,17 @@ static int set_tracer_option(struct tracer *trace, char *cmp, int neg)
 {
        struct tracer_flags *tracer_flags = trace->flags;
        struct tracer_opt *opts = NULL;
-       int ret = 0, i = 0;
-       int len;
+       int i;
 
        for (i = 0; tracer_flags->opts[i].name; i++) {
                opts = &tracer_flags->opts[i];
-               len = strlen(opts->name);
 
-               if (strncmp(cmp, opts->name, len) == 0) {
-                       ret = trace->set_flag(tracer_flags->val,
-                               opts->bit, !neg);
-                       break;
-               }
+               if (strcmp(cmp, opts->name) == 0)
+                       return __set_tracer_option(trace, trace->flags,
+                                                  opts, neg);
        }
-       /* Not found */
-       if (!tracer_flags->opts[i].name)
-               return -EINVAL;
-
-       /* Refused to handle */
-       if (ret)
-               return ret;
-
-       if (neg)
-               tracer_flags->val &= ~opts->bit;
-       else
-               tracer_flags->val |= opts->bit;
 
-       return 0;
+       return -EINVAL;
 }
 
 static void set_tracer_flags(unsigned int mask, int enabled)
@@ -2404,7 +2411,7 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf,
                        size_t cnt, loff_t *ppos)
 {
        char buf[64];
-       char *cmp = buf;
+       char *cmp;
        int neg = 0;
        int ret;
        int i;
@@ -2416,16 +2423,15 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf,
                return -EFAULT;
 
        buf[cnt] = 0;
+       cmp = strstrip(buf);
 
-       if (strncmp(buf, "no", 2) == 0) {
+       if (strncmp(cmp, "no", 2) == 0) {
                neg = 1;
                cmp += 2;
        }
 
        for (i = 0; trace_options[i]; i++) {
-               int len = strlen(trace_options[i]);
-
-               if (strncmp(cmp, trace_options[i], len) == 0) {
+               if (strcmp(cmp, trace_options[i]) == 0) {
                        set_tracer_flags(1 << i, !neg);
                        break;
                }
@@ -2440,14 +2446,23 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf,
                        return ret;
        }
 
-       filp->f_pos += cnt;
+       *ppos += cnt;
 
        return cnt;
 }
 
+static int tracing_trace_options_open(struct inode *inode, struct file *file)
+{
+       if (tracing_disabled)
+               return -ENODEV;
+       return single_open(file, tracing_trace_options_show, NULL);
+}
+
 static const struct file_operations tracing_iter_fops = {
-       .open           = tracing_open_generic,
-       .read           = tracing_trace_options_read,
+       .open           = tracing_trace_options_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
        .write          = tracing_trace_options_write,
 };
 
@@ -2582,7 +2597,7 @@ tracing_ctrl_write(struct file *filp, const char __user *ubuf,
        }
        mutex_unlock(&trace_types_lock);
 
-       filp->f_pos += cnt;
+       *ppos += cnt;
 
        return cnt;
 }
@@ -2764,7 +2779,7 @@ tracing_set_trace_write(struct file *filp, const char __user *ubuf,
        if (err)
                return err;
 
-       filp->f_pos += ret;
+       *ppos += ret;
 
        return ret;
 }
@@ -2897,6 +2912,10 @@ static int tracing_release_pipe(struct inode *inode, struct file *file)
        else
                cpumask_clear_cpu(iter->cpu_file, tracing_reader_cpumask);
 
+
+       if (iter->trace->pipe_close)
+               iter->trace->pipe_close(iter);
+
        mutex_unlock(&trace_types_lock);
 
        free_cpumask_var(iter->started);
@@ -3103,7 +3122,7 @@ static void tracing_spd_release_pipe(struct splice_pipe_desc *spd,
        __free_page(spd->pages[idx]);
 }
 
-static struct pipe_buf_operations tracing_pipe_buf_ops = {
+static const struct pipe_buf_operations tracing_pipe_buf_ops = {
        .can_merge              = 0,
        .map                    = generic_pipe_buf_map,
        .unmap                  = generic_pipe_buf_unmap,
@@ -3299,7 +3318,7 @@ tracing_entries_write(struct file *filp, const char __user *ubuf,
                }
        }
 
-       filp->f_pos += cnt;
+       *ppos += cnt;
 
        /* If check pages failed, return ENOMEM */
        if (tracing_disabled)
@@ -3334,7 +3353,6 @@ tracing_mark_write(struct file *filp, const char __user *ubuf,
                                        size_t cnt, loff_t *fpos)
 {
        char *buf;
-       char *end;
 
        if (tracing_disabled)
                return -EINVAL;
@@ -3342,7 +3360,7 @@ tracing_mark_write(struct file *filp, const char __user *ubuf,
        if (cnt > TRACE_BUF_SIZE)
                cnt = TRACE_BUF_SIZE;
 
-       buf = kmalloc(cnt + 1, GFP_KERNEL);
+       buf = kmalloc(cnt + 2, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
@@ -3350,35 +3368,31 @@ tracing_mark_write(struct file *filp, const char __user *ubuf,
                kfree(buf);
                return -EFAULT;
        }
+       if (buf[cnt-1] != '\n') {
+               buf[cnt] = '\n';
+               buf[cnt+1] = '\0';
+       } else
+               buf[cnt] = '\0';
 
-       /* Cut from the first nil or newline. */
-       buf[cnt] = '\0';
-       end = strchr(buf, '\n');
-       if (end)
-               *end = '\0';
-
-       cnt = mark_printk("%s\n", buf);
+       cnt = mark_printk("%s", buf);
        kfree(buf);
        *fpos += cnt;
 
        return cnt;
 }
 
-static ssize_t tracing_clock_read(struct file *filp, char __user *ubuf,
-                                 size_t cnt, loff_t *ppos)
+static int tracing_clock_show(struct seq_file *m, void *v)
 {
-       char buf[64];
-       int bufiter = 0;
        int i;
 
        for (i = 0; i < ARRAY_SIZE(trace_clocks); i++)
-               bufiter += snprintf(buf + bufiter, sizeof(buf) - bufiter,
+               seq_printf(m,
                        "%s%s%s%s", i ? " " : "",
                        i == trace_clock_id ? "[" : "", trace_clocks[i].name,
                        i == trace_clock_id ? "]" : "");
-       bufiter += snprintf(buf + bufiter, sizeof(buf) - bufiter, "\n");
+       seq_putc(m, '\n');
 
-       return simple_read_from_buffer(ubuf, cnt, ppos, buf, bufiter);
+       return 0;
 }
 
 static ssize_t tracing_clock_write(struct file *filp, const char __user *ubuf,
@@ -3420,6 +3434,13 @@ static ssize_t tracing_clock_write(struct file *filp, const char __user *ubuf,
        return cnt;
 }
 
+static int tracing_clock_open(struct inode *inode, struct file *file)
+{
+       if (tracing_disabled)
+               return -ENODEV;
+       return single_open(file, tracing_clock_show, NULL);
+}
+
 static const struct file_operations tracing_max_lat_fops = {
        .open           = tracing_open_generic,
        .read           = tracing_max_lat_read,
@@ -3458,8 +3479,10 @@ static const struct file_operations tracing_mark_fops = {
 };
 
 static const struct file_operations trace_clock_fops = {
-       .open           = tracing_open_generic,
-       .read           = tracing_clock_read,
+       .open           = tracing_clock_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
        .write          = tracing_clock_write,
 };
 
@@ -3589,7 +3612,7 @@ static void buffer_pipe_buf_get(struct pipe_inode_info *pipe,
 }
 
 /* Pipe buffer operations for a buffer. */
-static struct pipe_buf_operations buffer_pipe_buf_ops = {
+static const struct pipe_buf_operations buffer_pipe_buf_ops = {
        .can_merge              = 0,
        .map                    = generic_pipe_buf_map,
        .unmap                  = generic_pipe_buf_unmap,
@@ -3730,7 +3753,7 @@ tracing_stats_read(struct file *filp, char __user *ubuf,
 
        s = kmalloc(sizeof(*s), GFP_KERNEL);
        if (!s)
-               return ENOMEM;
+               return -ENOMEM;
 
        trace_seq_init(s);
 
@@ -3920,39 +3943,16 @@ trace_options_write(struct file *filp, const char __user *ubuf, size_t cnt,
        if (ret < 0)
                return ret;
 
-       ret = 0;
-       switch (val) {
-       case 0:
-               /* do nothing if already cleared */
-               if (!(topt->flags->val & topt->opt->bit))
-                       break;
-
-               mutex_lock(&trace_types_lock);
-               if (current_trace->set_flag)
-                       ret = current_trace->set_flag(topt->flags->val,
-                                                     topt->opt->bit, 0);
-               mutex_unlock(&trace_types_lock);
-               if (ret)
-                       return ret;
-               topt->flags->val &= ~topt->opt->bit;
-               break;
-       case 1:
-               /* do nothing if already set */
-               if (topt->flags->val & topt->opt->bit)
-                       break;
+       if (val != 0 && val != 1)
+               return -EINVAL;
 
+       if (!!(topt->flags->val & topt->opt->bit) != val) {
                mutex_lock(&trace_types_lock);
-               if (current_trace->set_flag)
-                       ret = current_trace->set_flag(topt->flags->val,
-                                                     topt->opt->bit, 1);
+               ret = __set_tracer_option(current_trace, topt->flags,
+                                         topt->opt, !val);
                mutex_unlock(&trace_types_lock);
                if (ret)
                        return ret;
-               topt->flags->val |= topt->opt->bit;
-               break;
-
-       default:
-               return -EINVAL;
        }
 
        *ppos += cnt;
@@ -4279,8 +4279,8 @@ trace_printk_seq(struct trace_seq *s)
 
 static void __ftrace_dump(bool disable_tracing)
 {
-       static raw_spinlock_t ftrace_dump_lock =
-               (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
+       static arch_spinlock_t ftrace_dump_lock =
+               (arch_spinlock_t)__ARCH_SPIN_LOCK_UNLOCKED;
        /* use static because iter can be a bit big for the stack */
        static struct trace_iterator iter;
        unsigned int old_userobj;
@@ -4290,7 +4290,7 @@ static void __ftrace_dump(bool disable_tracing)
 
        /* only one dump */
        local_irq_save(flags);
-       __raw_spin_lock(&ftrace_dump_lock);
+       arch_spin_lock(&ftrace_dump_lock);
        if (dump_ran)
                goto out;
 
@@ -4365,7 +4365,7 @@ static void __ftrace_dump(bool disable_tracing)
        }
 
  out:
-       __raw_spin_unlock(&ftrace_dump_lock);
+       arch_spin_unlock(&ftrace_dump_lock);
        local_irq_restore(flags);
 }