Bug#1095460: linux-source: Reading from config file is not good.

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From	Corcodel Marian <corcodel.marian@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1095460: linux-source: Reading from config file is not good.
Date	Sat, 08 Feb 2025 08:40:01 +0100
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Package: linux-source
Severity: normal
X-Debbugs-Cc: corcodel.marian@gmail.com

Hi , i describe some situation wich occur on linux kernel:
File kernel/rcu/tree_exp.h
static void rcu_report_exp_cpu_mult(struct rcu_node *rnp,
                                    unsigned long mask, bool wake)
{
        int cpu;
        unsigned long flags;
        struct rcu_data *rdp;

        raw_spin_lock_irqsave_rcu_node(rnp, flags);
        if (!(rnp->expmask & mask)) {
                raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
                return;
        }
        WRITE_ONCE(rnp->expmask, rnp->expmask & ~mask);
        for_each_leaf_node_cpu_mask(rnp, cpu, mask) {
                rdp = per_cpu_ptr(&rcu_data, cpu);
                if (!IS_ENABLED(CONFIG_NO_HZ_FULL) ||
!rdp->rcu_forced_tick_exp)
                        continue;
                rdp->rcu_forced_tick_exp = false;
                tick_dep_clear_cpu(cpu, TICK_DEP_BIT_RCU_EXP);
        }
        __rcu_report_exp_rnp(rnp, wake, flags); /* Releases rnp->lock. */
}

From function IS_ENABLED(CONFIG_NO_HZ_FULL) is only for muscle, using this
manner just inject delays on operations.


-- System Information:
Debian Release: 12.9
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.5+ (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

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Bug#1095460: linux-source: Reading from config file is not good. Corcodel Marian <corcodel.marian@gmail.com> - 2025-02-08 08:40 +0100
  Bug#1095460: linux-source: Reading from config file is not good. Bastian Blank <waldi@debian.org> - 2025-02-08 09:50 +0100
    Bug#1095460: linux-source: Reading from config file is not good. Marian Corcodel <corcodel.marian@gmail.com> - 2025-02-08 12:10 +0100
      Bug#1095460: linux-source: Reading from config file is not good. Marian Corcodel <corcodel.marian@gmail.com> - 2025-02-08 12:20 +0100
  Bug#1095460: marked as done (linux-source: Reading from config  file is not good.) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-02-08 12:20 +0100
  Bug#1095460: closed by Bastian Blank <waldi@debian.org> (Re: Bug#1095460: linux-source: Reading from config file is not good.) Marian Corcodel <corcodel.marian@gmail.com> - 2025-02-08 13:20 +0100

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