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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/oprofile/oprofile_stats.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/oprofile/oprofile_stats.c')
-rw-r--r-- | kernel/drivers/oprofile/oprofile_stats.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/kernel/drivers/oprofile/oprofile_stats.c b/kernel/drivers/oprofile/oprofile_stats.c new file mode 100644 index 000000000..59659cea4 --- /dev/null +++ b/kernel/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 dentry *root) +{ + struct oprofile_cpu_buffer *cpu_buf; + struct dentry *cpudir; + struct dentry *dir; + char buf[10]; + int i; + + dir = oprofilefs_mkdir(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(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(cpudir, "sample_received", + &cpu_buf->sample_received); + oprofilefs_create_ro_ulong(cpudir, "sample_lost_overflow", + &cpu_buf->sample_lost_overflow); + oprofilefs_create_ro_ulong(cpudir, "backtrace_aborted", + &cpu_buf->backtrace_aborted); + oprofilefs_create_ro_ulong(cpudir, "sample_invalid_eip", + &cpu_buf->sample_invalid_eip); + } + + oprofilefs_create_ro_atomic(dir, "sample_lost_no_mm", + &oprofile_stats.sample_lost_no_mm); + oprofilefs_create_ro_atomic(dir, "sample_lost_no_mapping", + &oprofile_stats.sample_lost_no_mapping); + oprofilefs_create_ro_atomic(dir, "event_lost_overflow", + &oprofile_stats.event_lost_overflow); + oprofilefs_create_ro_atomic(dir, "bt_lost_no_mapping", + &oprofile_stats.bt_lost_no_mapping); +#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX + oprofilefs_create_ro_atomic(dir, "multiplex_counter", + &oprofile_stats.multiplex_counter); +#endif +} |