Commit | Line | Data |
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1da177e4 LT |
1 | /** |
2 | * @file oprofile_stats.c | |
3 | * | |
4 | * @remark Copyright 2002 OProfile authors | |
5 | * @remark Read the file COPYING | |
6 | * | |
7 | * @author John Levon | |
8 | */ | |
9 | ||
10 | #include <linux/oprofile.h> | |
11 | #include <linux/smp.h> | |
12 | #include <linux/cpumask.h> | |
13 | #include <linux/threads.h> | |
6a18037d | 14 | |
1da177e4 LT |
15 | #include "oprofile_stats.h" |
16 | #include "cpu_buffer.h" | |
6a18037d | 17 | |
1da177e4 | 18 | struct oprofile_stat_struct oprofile_stats; |
6a18037d | 19 | |
1da177e4 LT |
20 | void oprofile_reset_stats(void) |
21 | { | |
25ad2913 | 22 | struct oprofile_cpu_buffer *cpu_buf; |
1da177e4 | 23 | int i; |
6a18037d | 24 | |
fe449f48 | 25 | for_each_possible_cpu(i) { |
b3e9f672 | 26 | cpu_buf = &per_cpu(op_cpu_buffer, i); |
1da177e4 LT |
27 | cpu_buf->sample_received = 0; |
28 | cpu_buf->sample_lost_overflow = 0; | |
df9d177a PE |
29 | cpu_buf->backtrace_aborted = 0; |
30 | cpu_buf->sample_invalid_eip = 0; | |
1da177e4 | 31 | } |
6a18037d | 32 | |
1da177e4 LT |
33 | atomic_set(&oprofile_stats.sample_lost_no_mm, 0); |
34 | atomic_set(&oprofile_stats.sample_lost_no_mapping, 0); | |
35 | atomic_set(&oprofile_stats.event_lost_overflow, 0); | |
2b8777ca | 36 | atomic_set(&oprofile_stats.bt_lost_no_mapping, 0); |
1b294f59 | 37 | atomic_set(&oprofile_stats.multiplex_counter, 0); |
1da177e4 LT |
38 | } |
39 | ||
40 | ||
40437c71 | 41 | void oprofile_create_stats_files(struct dentry *root) |
1da177e4 | 42 | { |
25ad2913 RR |
43 | struct oprofile_cpu_buffer *cpu_buf; |
44 | struct dentry *cpudir; | |
45 | struct dentry *dir; | |
1da177e4 LT |
46 | char buf[10]; |
47 | int i; | |
48 | ||
ecde2823 | 49 | dir = oprofilefs_mkdir(root, "stats"); |
1da177e4 LT |
50 | if (!dir) |
51 | return; | |
52 | ||
fe449f48 | 53 | for_each_possible_cpu(i) { |
b3e9f672 | 54 | cpu_buf = &per_cpu(op_cpu_buffer, i); |
1da177e4 | 55 | snprintf(buf, 10, "cpu%d", i); |
ecde2823 | 56 | cpudir = oprofilefs_mkdir(dir, buf); |
6a18037d | 57 | |
1da177e4 LT |
58 | /* Strictly speaking access to these ulongs is racy, |
59 | * but we can't simply lock them, and they are | |
60 | * informational only. | |
61 | */ | |
6af4ea0b | 62 | oprofilefs_create_ro_ulong(cpudir, "sample_received", |
1da177e4 | 63 | &cpu_buf->sample_received); |
6af4ea0b | 64 | oprofilefs_create_ro_ulong(cpudir, "sample_lost_overflow", |
1da177e4 | 65 | &cpu_buf->sample_lost_overflow); |
6af4ea0b | 66 | oprofilefs_create_ro_ulong(cpudir, "backtrace_aborted", |
1da177e4 | 67 | &cpu_buf->backtrace_aborted); |
6af4ea0b | 68 | oprofilefs_create_ro_ulong(cpudir, "sample_invalid_eip", |
df9d177a | 69 | &cpu_buf->sample_invalid_eip); |
1da177e4 | 70 | } |
6a18037d | 71 | |
6af4ea0b | 72 | oprofilefs_create_ro_atomic(dir, "sample_lost_no_mm", |
1da177e4 | 73 | &oprofile_stats.sample_lost_no_mm); |
6af4ea0b | 74 | oprofilefs_create_ro_atomic(dir, "sample_lost_no_mapping", |
1da177e4 | 75 | &oprofile_stats.sample_lost_no_mapping); |
6af4ea0b | 76 | oprofilefs_create_ro_atomic(dir, "event_lost_overflow", |
1da177e4 | 77 | &oprofile_stats.event_lost_overflow); |
6af4ea0b | 78 | oprofilefs_create_ro_atomic(dir, "bt_lost_no_mapping", |
1da177e4 | 79 | &oprofile_stats.bt_lost_no_mapping); |
4d4036e0 | 80 | #ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX |
6af4ea0b | 81 | oprofilefs_create_ro_atomic(dir, "multiplex_counter", |
1b294f59 | 82 | &oprofile_stats.multiplex_counter); |
4d4036e0 | 83 | #endif |
1da177e4 | 84 | } |