From: Konrad Kuchciak Date: Mon, 9 Sep 2019 10:07:52 +0000 (+0200) Subject: Add kernel module sources from stability-monitor X-Git-Tag: accepted/tizen/unified/20190917.034023^0 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bc8c1871c36752bef527be7f887d64caabbc78ff;p=platform%2Fcore%2Fsystem%2Fstability-monitor-kmod-rpi3.git Add kernel module sources from stability-monitor Change-Id: I5f377a6210996c2a4a3840f32d10337ffef55ae1 --- bc8c1871c36752bef527be7f887d64caabbc78ff diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..d645695 --- /dev/null +++ b/COPYING @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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+ * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DEBUG 0 +#define PAGE_TO_KB(x) ((x) << (PAGE_SHIFT - 10)) + +static struct proc_dir_entry* proc_file; + + +static u64 time_now(void) +{ + return div64_ul(ktime_get_boot_ns(), NSEC_PER_USEC); +} + +static inline u64 cputime_to_usecs(const u64 cputime) +{ + // return cputime >> 12; + return div64_ul(cputime, NSEC_PER_USEC); +} + +static unsigned int count_open_files(struct files_struct *files) +{ + unsigned int open_files = 0; + int i; + struct fdtable *fdt; + + if (!files) + return 0; + + spin_lock(&files->file_lock); + fdt = files_fdtable(files); + + /* Find the last non zero cell in open fds array */ + for (i = fdt->max_fds / BITS_PER_LONG - 1; i >= 0; i--) { + if (fdt->open_fds[i]) + break; + } + + /* Count set bits */ + for (i = (i + 1) * BITS_PER_LONG - 1; i >= 0; i--) { + if(test_bit(i, fdt->open_fds)) + open_files++; + } + + spin_unlock(&files->file_lock); + return open_files; +} + +static int stability_monitor_show(struct seq_file *m, void *v) +{ + struct sysinfo info; + struct task_struct *task, *t; + struct pid *pid = NULL; + pid_t ppid = 0; + u64 uptime, utime, stime, ut, st; + unsigned long long vm_rss, total_ram; + struct task_io_accounting task_ioac; + unsigned int open_fds; + + rcu_read_lock(); + + /* Uptime in us */ + uptime = time_now(); + + /* Memory info */ + si_meminfo(&info); + total_ram = PAGE_TO_KB(info.totalram); + + seq_put_decimal_ull(m, "", uptime); + seq_put_decimal_ull(m, " ", total_ram); + seq_printf(m, "\n"); + + for_each_process(task) { + ppid = task->real_parent->pid; + pid = task_pgrp(task); + if (!pid) + continue; + + task_lock(task); + + if (!task->mm) { + task_unlock(task); + continue; + } + + if (task->flags & (PF_DUMPCORE|PF_SIGNALED|PF_EXITING)) { + task_unlock(task); + continue; + } + + + /* Memory */ + vm_rss = get_mm_rss(task->mm); + + /* Open FDs */ + open_fds = count_open_files(task->files); + + /* CPU time + IO accounting */ + task_cputime_adjusted(task, &utime, &stime); + task_ioac = task->ioac; + t = task; + while_each_thread(task, t) { + task_cputime_adjusted(t, &ut, &st); + utime += ut; + stime += st; + task_io_accounting_add(&task_ioac, &t->ioac); + } + + task_unlock(task); + + seq_put_decimal_ll(m, "", task->pid); + seq_put_decimal_ll(m, " ", ppid); + seq_put_decimal_ull(m, " ", cputime_to_usecs(utime + stime)); + seq_put_decimal_ull(m, " ", PAGE_TO_KB(vm_rss)); + seq_put_decimal_ll(m, " ", open_fds); + seq_put_decimal_ull(m, " ", task_ioac.read_bytes + task_ioac.write_bytes); + seq_printf(m, "\n"); + } + + rcu_read_unlock(); + +#if DEBUG + printk(KERN_DEBUG "stability_monitor_show() took %llu us\n", time_now() - uptime); +#endif + + return 0; +} + +static int stability_monitor_open(struct inode *inode, struct file *file) +{ + return single_open_size(file, stability_monitor_show, NULL, 8192); +} + +static const struct file_operations stability_monitor_fops = { + .owner = THIS_MODULE, + .open = stability_monitor_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init stability_monitor_init(void) +{ + proc_file = proc_create("tsm", 0, NULL, &stability_monitor_fops); + if (!proc_file) + return -ENOMEM; + + return 0; +} + +static void __exit stability_monitor_exit(void) +{ + remove_proc_entry("tsm", NULL); +} + +module_init(stability_monitor_init); +module_exit(stability_monitor_exit); + +MODULE_LICENSE("GPL"); diff --git a/packaging/stability-monitor-kmod-rpi3.spec b/packaging/stability-monitor-kmod-rpi3.spec new file mode 100644 index 0000000..8c7bbe1 --- /dev/null +++ b/packaging/stability-monitor-kmod-rpi3.spec @@ -0,0 +1,27 @@ +%define KMOD_PATH %{_libdir}/stability-monitor/proc-tsm.ko + +Name: stability-monitor-kmod-rpi3 +Version: 0.0.1 +Release: 0 +License: Apache-2.0 +Source0: %{name}-%{version}.tar.xz +Summary: Stability monitoring kernel module +Group: System/Monitoring +ExclusiveArch: armv7l +BuildRequires: arm-rpi3-linux-kernel-devel + +%description +This package provides kernel module for stability monitoring daemon. + +%prep +%setup -q + +%build +make -C kernel KMOD_PATH=%KMOD_PATH KERNELDIR=/boot/kernel/devel/kernel-devel-arm-rpi3/ + +%install +install -D kernel/proc-tsm.ko %{buildroot}/%KMOD_PATH + +%files +%license COPYING +%KMOD_PATH