From mboxrd@z Thu Jan 1 00:00:00 1970 From: akpm@linux-foundation.org Subject: + linux-next-git-rejects.patch added to -mm tree Date: Mon, 03 Apr 2017 12:07:07 -0700 Message-ID: <58e29d5b.cqFeK8zEhmWTWvkN%akpm@linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Received: from mail.linuxfoundation.org ([140.211.169.12]:40606 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751468AbdDCTHJ (ORCPT ); Mon, 3 Apr 2017 15:07:09 -0400 Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: akpm@linux-foundation.org, mm-commits@vger.kernel.org The patch titled Subject: linux-next-git-rejects has been added to the -mm tree. Its filename is linux-next-git-rejects.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/linux-next-git-rejects.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/linux-next-git-rejects.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Andrew Morton Subject: linux-next-git-rejects Signed-off-by: Andrew Morton --- arch/x86/kernel/cpu/mcheck/mce.c | 262 ----------------------------- 1 file changed, 262 deletions(-) diff -puN arch/x86/kernel/cpu/mcheck/mce.c~linux-next-git-rejects arch/x86/kernel/cpu/mcheck/mce.c --- a/arch/x86/kernel/cpu/mcheck/mce.c~linux-next-git-rejects +++ a/arch/x86/kernel/cpu/mcheck/mce.c @@ -54,21 +54,7 @@ #include "mce-internal.h" -<<<<<<< HEAD -static DEFINE_MUTEX(mce_chrdev_read_mutex); - -static int mce_chrdev_open_count; /* #times opened */ - -#define mce_log_get_idx_check(p) \ -({ \ - RCU_LOCKDEP_WARN(!rcu_read_lock_sched_held() && \ - !lockdep_is_held(&mce_chrdev_read_mutex), \ - "suspicious mce_log_get_idx_check() usage"); \ - smp_load_acquire(&(p)); \ -}) -======= static DEFINE_MUTEX(mce_log_mutex); ->>>>>>> linux-next/akpm-base #define CREATE_TRACE_POINTS #include @@ -1829,254 +1815,6 @@ void mcheck_cpu_clear(struct cpuinfo_x86 } -<<<<<<< HEAD -/* - * mce_chrdev: Character device /dev/mcelog to read and clear the MCE log. - */ - -static DEFINE_SPINLOCK(mce_chrdev_state_lock); -static int mce_chrdev_open_exclu; /* already open exclusive? */ - -static int mce_chrdev_open(struct inode *inode, struct file *file) -{ - spin_lock(&mce_chrdev_state_lock); - - if (mce_chrdev_open_exclu || - (mce_chrdev_open_count && (file->f_flags & O_EXCL))) { - spin_unlock(&mce_chrdev_state_lock); - - return -EBUSY; - } - - if (file->f_flags & O_EXCL) - mce_chrdev_open_exclu = 1; - mce_chrdev_open_count++; - - spin_unlock(&mce_chrdev_state_lock); - - return nonseekable_open(inode, file); -} - -static int mce_chrdev_release(struct inode *inode, struct file *file) -{ - spin_lock(&mce_chrdev_state_lock); - - mce_chrdev_open_count--; - mce_chrdev_open_exclu = 0; - - spin_unlock(&mce_chrdev_state_lock); - - return 0; -} - -static void collect_tscs(void *data) -{ - unsigned long *cpu_tsc = (unsigned long *)data; - - cpu_tsc[smp_processor_id()] = rdtsc(); -} - -static int mce_apei_read_done; - -/* Collect MCE record of previous boot in persistent storage via APEI ERST. */ -static int __mce_read_apei(char __user **ubuf, size_t usize) -{ - int rc; - u64 record_id; - struct mce m; - - if (usize < sizeof(struct mce)) - return -EINVAL; - - rc = apei_read_mce(&m, &record_id); - /* Error or no more MCE record */ - if (rc <= 0) { - mce_apei_read_done = 1; - /* - * When ERST is disabled, mce_chrdev_read() should return - * "no record" instead of "no device." - */ - if (rc == -ENODEV) - return 0; - return rc; - } - rc = -EFAULT; - if (copy_to_user(*ubuf, &m, sizeof(struct mce))) - return rc; - /* - * In fact, we should have cleared the record after that has - * been flushed to the disk or sent to network in - * /sbin/mcelog, but we have no interface to support that now, - * so just clear it to avoid duplication. - */ - rc = apei_clear_mce(record_id); - if (rc) { - mce_apei_read_done = 1; - return rc; - } - *ubuf += sizeof(struct mce); - - return 0; -} - -static ssize_t mce_chrdev_read(struct file *filp, char __user *ubuf, - size_t usize, loff_t *off) -{ - char __user *buf = ubuf; - unsigned long *cpu_tsc; - unsigned prev, next; - int i, err; - - cpu_tsc = kmalloc(nr_cpu_ids * sizeof(long), GFP_KERNEL); - if (!cpu_tsc) - return -ENOMEM; - - mutex_lock(&mce_chrdev_read_mutex); - - if (!mce_apei_read_done) { - err = __mce_read_apei(&buf, usize); - if (err || buf != ubuf) - goto out; - } - - next = mce_log_get_idx_check(mcelog.next); - - /* Only supports full reads right now */ - err = -EINVAL; - if (*off != 0 || usize < MCE_LOG_LEN*sizeof(struct mce)) - goto out; - - err = 0; - prev = 0; - do { - for (i = prev; i < next; i++) { - unsigned long start = jiffies; - struct mce *m = &mcelog.entry[i]; - - while (!m->finished) { - if (time_after_eq(jiffies, start + 2)) { - memset(m, 0, sizeof(*m)); - goto timeout; - } - cpu_relax(); - } - smp_rmb(); - err |= copy_to_user(buf, m, sizeof(*m)); - buf += sizeof(*m); -timeout: - ; - } - - memset(mcelog.entry + prev, 0, - (next - prev) * sizeof(struct mce)); - prev = next; - next = cmpxchg(&mcelog.next, prev, 0); - } while (next != prev); - - synchronize_sched(); - - /* - * Collect entries that were still getting written before the - * synchronize. - */ - on_each_cpu(collect_tscs, cpu_tsc, 1); - - for (i = next; i < MCE_LOG_LEN; i++) { - struct mce *m = &mcelog.entry[i]; - - if (m->finished && m->tsc < cpu_tsc[m->cpu]) { - err |= copy_to_user(buf, m, sizeof(*m)); - smp_rmb(); - buf += sizeof(*m); - memset(m, 0, sizeof(*m)); - } - } - - if (err) - err = -EFAULT; - -out: - mutex_unlock(&mce_chrdev_read_mutex); - kfree(cpu_tsc); - - return err ? err : buf - ubuf; -} - -static unsigned int mce_chrdev_poll(struct file *file, poll_table *wait) -{ - poll_wait(file, &mce_chrdev_wait, wait); - if (READ_ONCE(mcelog.next)) - return POLLIN | POLLRDNORM; - if (!mce_apei_read_done && apei_check_mce()) - return POLLIN | POLLRDNORM; - return 0; -} - -static long mce_chrdev_ioctl(struct file *f, unsigned int cmd, - unsigned long arg) -{ - int __user *p = (int __user *)arg; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - switch (cmd) { - case MCE_GET_RECORD_LEN: - return put_user(sizeof(struct mce), p); - case MCE_GET_LOG_LEN: - return put_user(MCE_LOG_LEN, p); - case MCE_GETCLEAR_FLAGS: { - unsigned flags; - - do { - flags = mcelog.flags; - } while (cmpxchg(&mcelog.flags, flags, 0) != flags); - - return put_user(flags, p); - } - default: - return -ENOTTY; - } -} - -static ssize_t (*mce_write)(struct file *filp, const char __user *ubuf, - size_t usize, loff_t *off); - -void register_mce_write_callback(ssize_t (*fn)(struct file *filp, - const char __user *ubuf, - size_t usize, loff_t *off)) -{ - mce_write = fn; -} -EXPORT_SYMBOL_GPL(register_mce_write_callback); - -static ssize_t mce_chrdev_write(struct file *filp, const char __user *ubuf, - size_t usize, loff_t *off) -{ - if (mce_write) - return mce_write(filp, ubuf, usize, off); - else - return -EINVAL; -} - -static const struct file_operations mce_chrdev_ops = { - .open = mce_chrdev_open, - .release = mce_chrdev_release, - .read = mce_chrdev_read, - .write = mce_chrdev_write, - .poll = mce_chrdev_poll, - .unlocked_ioctl = mce_chrdev_ioctl, - .llseek = no_llseek, -}; - -static struct miscdevice mce_chrdev_device = { - MISC_MCELOG_MINOR, - "mcelog", - &mce_chrdev_ops, -}; - -======= ->>>>>>> linux-next/akpm-base static void __mce_disable_bank(void *arg) { int bank = *((int *)arg); _ Patches currently in -mm which might be from akpm@linux-foundation.org are i-need-old-gcc.patch arm-arch-arm-include-asm-pageh-needs-personalityh.patch ocfs2-old-mle-put-and-release-after-the-function-dlm_add_migration_mle-called-fix.patch ocfs2-dlm-optimization-of-code-while-free-dead-node-locks-checkpatch-fixes.patch mm.patch mm-move-madv_free-pages-into-lru_inactive_file-list-checkpatch-fixes.patch mm-use-is_migrate_highatomic-to-simplify-the-code-fix.patch mm-introduce-memalloc_nofs_saverestore-api-fix.patch jbd2-mark-the-transaction-context-with-the-scope-gfp_nofs-context-fix.patch jbd2-make-the-whole-kjournald2-kthread-nofs-safe-checkpatch-fixes.patch mm-page_alloc-count-movable-pages-when-stealing-from-pageblock-fix.patch swap-add-warning-if-swap-slots-cache-failed-to-initialize-fix.patch checkpatch-add-ability-to-find-bad-uses-of-vsprintf-%pfoo-extensions-fix.patch checkpatch-add-ability-to-find-bad-uses-of-vsprintf-%pfoo-extensions-fix-fix.patch taskstats-add-e-u-stime-for-tgid-command-fix.patch taskstats-add-e-u-stime-for-tgid-command-fix-fix.patch kernel-reboot-add-devm_register_reboot_notifier-fix.patch fault-inject-support-systematic-fault-injection-fix.patch linux-next-rejects.patch drivers-net-ethernet-mellanox-mlx5-core-en_mainc-fix-build-with-gcc-444.patch drivers-net-ethernet-mellanox-mlx5-core-en_ethtoolc-fix-build-with-gcc-444.patch drm-use-set_memoryh-header-fix.patch drivers-staging-media-atomisp-pci-atomisp2-use-set_memoryh.patch kernel-forkc-export-kernel_thread-to-modules.patch slab-leaks3-default-y.patch linux-next-git-rejects.patch