mirror of
https://github.com/dynup/kpatch
synced 2025-03-07 19:28:12 +00:00
65 lines
1.9 KiB
Diff
65 lines
1.9 KiB
Diff
diff -Nupr src.orig/fs/nfsd/export.c src/fs/nfsd/export.c
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--- src.orig/fs/nfsd/export.c 2024-04-18 11:19:38.144638397 -0400
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+++ src/fs/nfsd/export.c 2024-04-18 11:19:51.106608412 -0400
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@@ -1342,6 +1342,10 @@ static void exp_flags(struct seq_file *m
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}
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}
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+#include <linux/version.h>
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+extern char *kpatch_string(void);
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+
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+__attribute__((optimize("-fno-optimize-sibling-calls")))
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static int e_show(struct seq_file *m, void *p)
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{
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struct cache_head *cp = p;
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@@ -1349,12 +1353,36 @@ static int e_show(struct seq_file *m, vo
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struct cache_detail *cd = m->private;
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bool export_stats = is_export_stats_file(m);
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+#ifdef CONFIG_X86_64
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+ alternative("ud2", "call single_task_running", X86_FEATURE_ALWAYS);
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+ alternative("call single_task_running", "ud2", X86_FEATURE_IA64);
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+
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+ slow_down_io(); /* paravirt call */
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+#endif
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+
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+ pr_debug("kpatch: pr_debug() test\n");
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+
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+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
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+{
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+ static DEFINE_STATIC_KEY_TRUE(kpatch_key);
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+
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+ if (static_branch_unlikely(&memcg_kmem_enabled_key))
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+ printk("kpatch: memcg_kmem_enabled_key\n");
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+
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+ BUG_ON(!static_branch_likely(&kpatch_key));
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+ static_branch_disable(&kpatch_key);
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+ BUG_ON(static_branch_likely(&kpatch_key));
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+ static_branch_enable(&kpatch_key);
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+}
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+#endif
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+
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if (p == SEQ_START_TOKEN) {
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seq_puts(m, "# Version 1.1\n");
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if (export_stats)
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seq_puts(m, "# Path Client Start-time\n#\tStats\n");
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else
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seq_puts(m, "# Path Client(Flags) # IPs\n");
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+ seq_puts(m, kpatch_string());
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return 0;
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}
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diff -Nupr src.orig/net/netlink/af_netlink.c src/net/netlink/af_netlink.c
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--- src.orig/net/netlink/af_netlink.c 2024-04-18 11:19:38.442637708 -0400
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+++ src/net/netlink/af_netlink.c 2024-04-18 11:19:51.107608409 -0400
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@@ -2944,4 +2944,9 @@ panic:
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panic("netlink_init: Cannot allocate nl_table\n");
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}
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+char *kpatch_string(void)
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+{
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+ return "# kpatch\n";
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+}
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+
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core_initcall(netlink_proto_init);
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