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kexec_file, power: print out debugging message if required

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Then when specifying '-d' for kexec_file_load interface, loaded locations
of kernel/initrd/cmdline etc can be printed out to help debug.

Here replace pr_debug() with the newly added kexec_dprintk() in kexec_file
loading related codes.

Link: https://lkml.kernel.org/r/20231213055747.61826-7-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Conor Dooley <conor@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Baoquan He 2023-12-13 13:57:46 +08:00 committed by Andrew Morton
parent eb7622d908
commit 63b642e952
2 changed files with 13 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/powerpc/kexec/elf_64.c
View File

@ -59,7 +59,7 @@ static void *elf64_load(struct kimage *image, char *kernel_buf,
if (ret)
goto out;
pr_debug("Loaded the kernel at 0x%lx\n", kernel_load_addr);
kexec_dprintk("Loaded the kernel at 0x%lx\n", kernel_load_addr);
ret = kexec_load_purgatory(image, &pbuf);
if (ret) {
@ -67,7 +67,7 @@ static void *elf64_load(struct kimage *image, char *kernel_buf,
goto out;
}
pr_debug("Loaded purgatory at 0x%lx\n", pbuf.mem);
kexec_dprintk("Loaded purgatory at 0x%lx\n", pbuf.mem);
/* Load additional segments needed for panic kernel */
if (image->type == KEXEC_TYPE_CRASH) {
@ -99,7 +99,7 @@ static void *elf64_load(struct kimage *image, char *kernel_buf,
goto out;
initrd_load_addr = kbuf.mem;
pr_debug("Loaded initrd at 0x%lx\n", initrd_load_addr);
kexec_dprintk("Loaded initrd at 0x%lx\n", initrd_load_addr);
}
fdt = of_kexec_alloc_and_setup_fdt(image, initrd_load_addr,
@ -132,7 +132,7 @@ static void *elf64_load(struct kimage *image, char *kernel_buf,
fdt_load_addr = kbuf.mem;
pr_debug("Loaded device tree at 0x%lx\n", fdt_load_addr);
kexec_dprintk("Loaded device tree at 0x%lx\n", fdt_load_addr);
slave_code = elf_info.buffer + elf_info.proghdrs[0].p_offset;
ret = setup_purgatory_ppc64(image, slave_code, fdt, kernel_load_addr,

18
arch/powerpc/kexec/file_load_64.c
View File

@ -577,7 +577,7 @@ static int add_usable_mem_property(void *fdt, struct device_node *dn,
NODE_PATH_LEN, dn);
return -EOVERFLOW;
}
pr_debug("Memory node path: %s\n", path);
kexec_dprintk("Memory node path: %s\n", path);
/* Now that we know the path, find its offset in kdump kernel's fdt */
node = fdt_path_offset(fdt, path);
@ -590,8 +590,8 @@ static int add_usable_mem_property(void *fdt, struct device_node *dn,
/* Get the address & size cells */
n_mem_addr_cells = of_n_addr_cells(dn);
n_mem_size_cells = of_n_size_cells(dn);
pr_debug("address cells: %d, size cells: %d\n", n_mem_addr_cells,
n_mem_size_cells);
kexec_dprintk("address cells: %d, size cells: %d\n", n_mem_addr_cells,
n_mem_size_cells);
um_info->idx = 0;
if (!check_realloc_usable_mem(um_info, 2)) {
@ -664,7 +664,7 @@ static int update_usable_mem_fdt(void *fdt, struct crash_mem *usable_mem)
node = fdt_path_offset(fdt, "/ibm,dynamic-reconfiguration-memory");
if (node == -FDT_ERR_NOTFOUND)
pr_debug("No dynamic reconfiguration memory found\n");
kexec_dprintk("No dynamic reconfiguration memory found\n");
else if (node < 0) {
pr_err("Malformed device tree: error reading /ibm,dynamic-reconfiguration-memory.\n");
return -EINVAL;
@ -776,8 +776,8 @@ static void update_backup_region_phdr(struct kimage *image, Elf64_Ehdr *ehdr)
for (i = 0; i < ehdr->e_phnum; i++) {
if (phdr->p_paddr == BACKUP_SRC_START) {
phdr->p_offset = image->arch.backup_start;
pr_debug("Backup region offset updated to 0x%lx\n",
image->arch.backup_start);
kexec_dprintk("Backup region offset updated to 0x%lx\n",
image->arch.backup_start);
return;
}
}
@ -850,7 +850,7 @@ int load_crashdump_segments_ppc64(struct kimage *image,
pr_err("Failed to load backup segment\n");
return ret;
}
pr_debug("Loaded the backup region at 0x%lx\n", kbuf->mem);
kexec_dprintk("Loaded the backup region at 0x%lx\n", kbuf->mem);
/* Load elfcorehdr segment - to export crashing kernel's vmcore */
ret = load_elfcorehdr_segment(image, kbuf);
@ -858,8 +858,8 @@ int load_crashdump_segments_ppc64(struct kimage *image,
pr_err("Failed to load elfcorehdr segment\n");
return ret;
}
pr_debug("Loaded elf core header at 0x%lx, bufsz=0x%lx memsz=0x%lx\n",
image->elf_load_addr, kbuf->bufsz, kbuf->memsz);
kexec_dprintk("Loaded elf core header at 0x%lx, bufsz=0x%lx memsz=0x%lx\n",
image->elf_load_addr, kbuf->bufsz, kbuf->memsz);
return 0;
}