The following commit has been merged into the x86/kdump branch of tip:

Commit-ID:     d949fa7b1ec54c626b656f873b95d76b8ab0d143
Gitweb:        https://git.kernel.org/tip/d949fa7b1ec54c626b656f873b95d76b8ab0d143
Author:        Ionut Nechita <ionut.nechita@windriver.com>
AuthorDate:    Tue, 01 Sep 2026 10:10:41 +03:00
Committer:     Dave Hansen <dave.hansen@linux.intel.com>
CommitterDate: Wed, 02 Sep 2026 14:25:16 -07:00

crash: Update stale NR_CPUS_DEFAULT references in elfcorehdr sizing docs

The elfcorehdr reservation is now sized with NR_CPUS, but two comments
still name NR_CPUS_DEFAULT: the one above crash_handle_hotplug_event()
and the CRASH_MAX_MEMORY_RANGES help text.

Update both.  Documentation only, no functional change.

Suggested-by: Jinjie Ruan <ruanjinjie@huawei.com>
Suggested-by: Bradley Morgan <brads@mainlining.org>
Signed-off-by: Ionut Nechita <ionut.nechita@windriver.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Bradley Morgan <brads@mainlining.org>
Reviewed-by: Bradley Morgan <include@grrlz.net>
Link: https://patch.msgid.link/20260901071041.16311-3-ionut.nechita@windriver.com
---
 kernel/Kconfig.kexec | 2 +-
 kernel/crash_core.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/Kconfig.kexec b/kernel/Kconfig.kexec
index 1563235..a97ed96 100644
--- a/kernel/Kconfig.kexec
+++ b/kernel/Kconfig.kexec
@@ -167,7 +167,7 @@ config CRASH_MAX_MEMORY_RANGES
 	  memory regions that the elfcorehdr buffer/segment can accommodate.
 	  These regions are obtained via walk_system_ram_res(); eg. the
 	  'System RAM' entries in /proc/iomem.
-	  This value is combined with NR_CPUS_DEFAULT and multiplied by
+	  This value is combined with NR_CPUS and multiplied by
 	  sizeof(Elf64_Phdr) to determine the final elfcorehdr memory buffer/
 	  segment size.
 	  The value 8192, for example, covers a (sparsely populated) 1TiB system
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 2b36aa9..d0bd2d0 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -648,7 +648,7 @@ int crash_check_hotplug_support(void)
  * new list of CPUs and memory. To make changes to the elfcorehdr, it
  * should be large enough to permit a growing number of CPU and Memory
  * resources. One can estimate the elfcorehdr memory size based on
- * NR_CPUS_DEFAULT and CRASH_MAX_MEMORY_RANGES. The elfcorehdr is
+ * NR_CPUS and CRASH_MAX_MEMORY_RANGES. The elfcorehdr is
  * excluded from SHA verification by default if the architecture
  * supports crash hotplug.
  */