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[19/19] arm64: kdump: relax BUG_ON() if more than one cpus are still active

Message ID e52b39c76d2a967bdecc376daee07d6edd47b01a.1452884156.git.geoff@infradead.org
State New
Headers show

Commit Message

Geoff Levand Jan. 15, 2016, 7:18 p.m. UTC 
From: AKASHI Takahiro <takahiro.akashi@linaro.org>


We should try best in case of kdump.
So even if not all secondary cpus have shut down, we do kdump anyway.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>

---
 arch/arm64/kernel/machine_kexec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.5.0


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Patch

diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index 0ba2ae4..3230551 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -157,7 +157,7 @@  void machine_kexec(struct kimage *kimage)
 	phys_addr_t reboot_code_buffer_phys;
 	void *reboot_code_buffer;
 
-	BUG_ON(num_online_cpus() > 1);
+	BUG_ON((num_online_cpus() > 1) && !WARN_ON(in_crash_kexec));
 
 	reboot_code_buffer_phys = page_to_phys(kimage->control_code_page);
 	reboot_code_buffer = kmap(kimage->control_code_page);