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Linux_SDK_V1.4.2

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Signed-off-by: thead_admin <occ_thead@service.alibaba.com>
This commit is contained in:
thead_admin
2023-12-24 02:32:32 +00:00
committed by Han Gao
parent c20ad6292d
commit a9b3178041
164 changed files with 1942 additions and 24749 deletions
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41
arch/riscv/kernel/machine_kexec.c
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@@ -235,3 +235,44 @@ machine_kexec(struct kimage *image)
this_hart_id, va_pa_offset);
unreachable();
}
#ifdef CONFIG_HIBERNATION
/*
* crash_is_nosave
*
* Return true only if a page is part of reserved memory for crash dump kernel,
* but does not hold any data of loaded kernel image.
*
* Note that all the pages in crash dump kernel memory have been initially
* marked as Reserved as memory was allocated via memblock_reserve().
*
* In hibernation, the pages which are Reserved and yet "nosave" are excluded
* from the hibernation iamge. crash_is_nosave() does thich check for crash
* dump kernel and will reduce the total size of hibernation image.
*/
bool crash_is_nosave(unsigned long pfn)
{
int i;
phys_addr_t addr;
if (!crashk_res.end)
return false;
/* in reserved memory? */
addr = __pfn_to_phys(pfn);
if ((addr < crashk_res.start) || (crashk_res.end < addr))
return false;
if (!kexec_crash_image)
return true;
/* not part of loaded kernel image? */
for (i = 0; i < kexec_crash_image->nr_segments; i++)
if (addr >= kexec_crash_image->segment[i].mem &&
addr < (kexec_crash_image->segment[i].mem +
kexec_crash_image->segment[i].memsz))
return false;
return true;
}
#endif