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1b294f5960
This patch moves the multiplexing switch counter from x86 code to common oprofile statistic variables. Now the value will be available and usable for all architectures. The initialization and incrementation also moved to common code. Signed-off-by: Robert Richter <robert.richter@amd.com>
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/**
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* @file oprofile_stats.c
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*
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* @remark Copyright 2002 OProfile authors
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* @remark Read the file COPYING
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*
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* @author John Levon
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*/
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#include <linux/oprofile.h>
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#include <linux/smp.h>
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#include <linux/cpumask.h>
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#include <linux/threads.h>
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#include "oprofile_stats.h"
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#include "cpu_buffer.h"
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struct oprofile_stat_struct oprofile_stats;
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void oprofile_reset_stats(void)
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{
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struct oprofile_cpu_buffer *cpu_buf;
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int i;
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for_each_possible_cpu(i) {
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cpu_buf = &per_cpu(cpu_buffer, i);
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cpu_buf->sample_received = 0;
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cpu_buf->sample_lost_overflow = 0;
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cpu_buf->backtrace_aborted = 0;
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cpu_buf->sample_invalid_eip = 0;
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}
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atomic_set(&oprofile_stats.sample_lost_no_mm, 0);
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atomic_set(&oprofile_stats.sample_lost_no_mapping, 0);
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atomic_set(&oprofile_stats.event_lost_overflow, 0);
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atomic_set(&oprofile_stats.bt_lost_no_mapping, 0);
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atomic_set(&oprofile_stats.multiplex_counter, 0);
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}
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void oprofile_create_stats_files(struct super_block *sb, struct dentry *root)
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{
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struct oprofile_cpu_buffer *cpu_buf;
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struct dentry *cpudir;
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struct dentry *dir;
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char buf[10];
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int i;
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dir = oprofilefs_mkdir(sb, root, "stats");
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if (!dir)
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return;
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for_each_possible_cpu(i) {
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cpu_buf = &per_cpu(cpu_buffer, i);
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snprintf(buf, 10, "cpu%d", i);
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cpudir = oprofilefs_mkdir(sb, dir, buf);
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/* Strictly speaking access to these ulongs is racy,
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* but we can't simply lock them, and they are
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* informational only.
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*/
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oprofilefs_create_ro_ulong(sb, cpudir, "sample_received",
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&cpu_buf->sample_received);
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oprofilefs_create_ro_ulong(sb, cpudir, "sample_lost_overflow",
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&cpu_buf->sample_lost_overflow);
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oprofilefs_create_ro_ulong(sb, cpudir, "backtrace_aborted",
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&cpu_buf->backtrace_aborted);
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oprofilefs_create_ro_ulong(sb, cpudir, "sample_invalid_eip",
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&cpu_buf->sample_invalid_eip);
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}
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oprofilefs_create_ro_atomic(sb, dir, "sample_lost_no_mm",
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&oprofile_stats.sample_lost_no_mm);
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oprofilefs_create_ro_atomic(sb, dir, "sample_lost_no_mapping",
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&oprofile_stats.sample_lost_no_mapping);
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oprofilefs_create_ro_atomic(sb, dir, "event_lost_overflow",
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&oprofile_stats.event_lost_overflow);
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oprofilefs_create_ro_atomic(sb, dir, "bt_lost_no_mapping",
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&oprofile_stats.bt_lost_no_mapping);
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#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
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oprofilefs_create_ro_atomic(sb, dir, "multiplex_counter",
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&oprofile_stats.multiplex_counter);
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#endif
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}
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