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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/oprofile/oprofile_stats.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/oprofile/oprofile_stats.c')
-rw-r--r-- | drivers/oprofile/oprofile_stats.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c new file mode 100644 index 00000000..917d28eb --- /dev/null +++ b/drivers/oprofile/oprofile_stats.c @@ -0,0 +1,84 @@ +/** + * @file oprofile_stats.c + * + * @remark Copyright 2002 OProfile authors + * @remark Read the file COPYING + * + * @author John Levon + */ + +#include <linux/oprofile.h> +#include <linux/smp.h> +#include <linux/cpumask.h> +#include <linux/threads.h> + +#include "oprofile_stats.h" +#include "cpu_buffer.h" + +struct oprofile_stat_struct oprofile_stats; + +void oprofile_reset_stats(void) +{ + struct oprofile_cpu_buffer *cpu_buf; + int i; + + for_each_possible_cpu(i) { + cpu_buf = &per_cpu(op_cpu_buffer, i); + cpu_buf->sample_received = 0; + cpu_buf->sample_lost_overflow = 0; + cpu_buf->backtrace_aborted = 0; + cpu_buf->sample_invalid_eip = 0; + } + + atomic_set(&oprofile_stats.sample_lost_no_mm, 0); + atomic_set(&oprofile_stats.sample_lost_no_mapping, 0); + atomic_set(&oprofile_stats.event_lost_overflow, 0); + atomic_set(&oprofile_stats.bt_lost_no_mapping, 0); + atomic_set(&oprofile_stats.multiplex_counter, 0); +} + + +void oprofile_create_stats_files(struct super_block *sb, struct dentry *root) +{ + struct oprofile_cpu_buffer *cpu_buf; + struct dentry *cpudir; + struct dentry *dir; + char buf[10]; + int i; + + dir = oprofilefs_mkdir(sb, root, "stats"); + if (!dir) + return; + + for_each_possible_cpu(i) { + cpu_buf = &per_cpu(op_cpu_buffer, i); + snprintf(buf, 10, "cpu%d", i); + cpudir = oprofilefs_mkdir(sb, dir, buf); + + /* Strictly speaking access to these ulongs is racy, + * but we can't simply lock them, and they are + * informational only. + */ + oprofilefs_create_ro_ulong(sb, cpudir, "sample_received", + &cpu_buf->sample_received); + oprofilefs_create_ro_ulong(sb, cpudir, "sample_lost_overflow", + &cpu_buf->sample_lost_overflow); + oprofilefs_create_ro_ulong(sb, cpudir, "backtrace_aborted", + &cpu_buf->backtrace_aborted); + oprofilefs_create_ro_ulong(sb, cpudir, "sample_invalid_eip", + &cpu_buf->sample_invalid_eip); + } + + oprofilefs_create_ro_atomic(sb, dir, "sample_lost_no_mm", + &oprofile_stats.sample_lost_no_mm); + oprofilefs_create_ro_atomic(sb, dir, "sample_lost_no_mapping", + &oprofile_stats.sample_lost_no_mapping); + oprofilefs_create_ro_atomic(sb, dir, "event_lost_overflow", + &oprofile_stats.event_lost_overflow); + oprofilefs_create_ro_atomic(sb, dir, "bt_lost_no_mapping", + &oprofile_stats.bt_lost_no_mapping); +#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX + oprofilefs_create_ro_atomic(sb, dir, "multiplex_counter", + &oprofile_stats.multiplex_counter); +#endif +} |