Commit 44274141 authored by Pekka Paalanen's avatar Pekka Paalanen Committed by Ingo Molnar

mmiotrace: remove left-over marker cruft

Signed-off-by: default avatarPekka Paalanen <pq@iki.fi>
Acked-by: default avatarSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent fc5e27ae
...@@ -56,13 +56,6 @@ struct remap_trace { ...@@ -56,13 +56,6 @@ struct remap_trace {
static DEFINE_PER_CPU(struct trap_reason, pf_reason); static DEFINE_PER_CPU(struct trap_reason, pf_reason);
static DEFINE_PER_CPU(struct mmiotrace_rw, cpu_trace); static DEFINE_PER_CPU(struct mmiotrace_rw, cpu_trace);
#if 0 /* XXX: no way gather this info anymore */
/* Access to this is not per-cpu. */
static DEFINE_PER_CPU(atomic_t, dropped);
#endif
static struct dentry *marker_file;
static DEFINE_MUTEX(mmiotrace_mutex); static DEFINE_MUTEX(mmiotrace_mutex);
static DEFINE_SPINLOCK(trace_lock); static DEFINE_SPINLOCK(trace_lock);
static atomic_t mmiotrace_enabled; static atomic_t mmiotrace_enabled;
...@@ -97,44 +90,6 @@ static bool is_enabled(void) ...@@ -97,44 +90,6 @@ static bool is_enabled(void)
return atomic_read(&mmiotrace_enabled); return atomic_read(&mmiotrace_enabled);
} }
#if 0 /* XXX: needs rewrite */
/*
* Write callback for the debugfs entry:
* Read a marker and write it to the mmio trace log
*/
static ssize_t write_marker(struct file *file, const char __user *buffer,
size_t count, loff_t *ppos)
{
char *event = NULL;
struct mm_io_header *headp;
ssize_t len = (count > 65535) ? 65535 : count;
event = kzalloc(sizeof(*headp) + len, GFP_KERNEL);
if (!event)
return -ENOMEM;
headp = (struct mm_io_header *)event;
headp->type = MMIO_MAGIC | (MMIO_MARKER << MMIO_OPCODE_SHIFT);
headp->data_len = len;
if (copy_from_user(event + sizeof(*headp), buffer, len)) {
kfree(event);
return -EFAULT;
}
spin_lock_irq(&trace_lock);
#if 0 /* XXX: convert this to use tracing */
if (is_enabled())
relay_write(chan, event, sizeof(*headp) + len);
else
#endif
len = -EINVAL;
spin_unlock_irq(&trace_lock);
kfree(event);
return len;
}
#endif
static void print_pte(unsigned long address) static void print_pte(unsigned long address)
{ {
unsigned int level; unsigned int level;
...@@ -481,26 +436,12 @@ static void leave_uniprocessor(void) ...@@ -481,26 +436,12 @@ static void leave_uniprocessor(void)
} }
#endif #endif
#if 0 /* XXX: out of order */
static struct file_operations fops_marker = {
.owner = THIS_MODULE,
.write = write_marker
};
#endif
void enable_mmiotrace(void) void enable_mmiotrace(void)
{ {
mutex_lock(&mmiotrace_mutex); mutex_lock(&mmiotrace_mutex);
if (is_enabled()) if (is_enabled())
goto out; goto out;
#if 0 /* XXX: tracing does not support text entries */
marker_file = debugfs_create_file("marker", 0660, dir, NULL,
&fops_marker);
if (!marker_file)
pr_err(NAME "marker file creation failed.\n");
#endif
if (nommiotrace) if (nommiotrace)
pr_info(NAME "MMIO tracing disabled.\n"); pr_info(NAME "MMIO tracing disabled.\n");
enter_uniprocessor(); enter_uniprocessor();
...@@ -525,11 +466,6 @@ void disable_mmiotrace(void) ...@@ -525,11 +466,6 @@ void disable_mmiotrace(void)
clear_trace_list(); /* guarantees: no more kmmio callbacks */ clear_trace_list(); /* guarantees: no more kmmio callbacks */
leave_uniprocessor(); leave_uniprocessor();
if (marker_file) {
debugfs_remove(marker_file);
marker_file = NULL;
}
pr_info(NAME "disabled.\n"); pr_info(NAME "disabled.\n");
out: out:
mutex_unlock(&mmiotrace_mutex); mutex_unlock(&mmiotrace_mutex);
......
...@@ -67,8 +67,7 @@ enum mm_io_opcode { ...@@ -67,8 +67,7 @@ enum mm_io_opcode {
MMIO_WRITE = 0x2, /* struct mmiotrace_rw */ MMIO_WRITE = 0x2, /* struct mmiotrace_rw */
MMIO_PROBE = 0x3, /* struct mmiotrace_map */ MMIO_PROBE = 0x3, /* struct mmiotrace_map */
MMIO_UNPROBE = 0x4, /* struct mmiotrace_map */ MMIO_UNPROBE = 0x4, /* struct mmiotrace_map */
MMIO_MARKER = 0x5, /* raw char data */ MMIO_UNKNOWN_OP = 0x5, /* struct mmiotrace_rw */
MMIO_UNKNOWN_OP = 0x6, /* struct mmiotrace_rw */
}; };
struct mmiotrace_rw { struct mmiotrace_rw {
......
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