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| author | Baoquan He <bhe@redhat.com> | 2023-12-13 13:57:42 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-20 15:02:57 -0800 |
| commit | a85ee18c7900f001f42082d2fabce4eaf57e655f (patch) | |
| tree | 785648618754b07cceed7c5c903fafdeb6055e2e /kernel/kexec_file.c | |
| parent | cbc2fe9d9cb226347365753f50d81bc48cc3c52e (diff) | |
| download | linux-a85ee18c7900f001f42082d2fabce4eaf57e655f.tar.gz linux-a85ee18c7900f001f42082d2fabce4eaf57e655f.tar.bz2 linux-a85ee18c7900f001f42082d2fabce4eaf57e655f.zip | |
kexec_file: print out debugging message if required
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.
And also print out type/start/head of kimage and flags to help debug.
Link: https://lkml.kernel.org/r/20231213055747.61826-3-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>
Diffstat (limited to 'kernel/kexec_file.c')
| -rw-r--r-- | kernel/kexec_file.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 3ee204474de6..aca5f3668f4c 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -204,6 +204,8 @@ kimage_file_prepare_segments(struct kimage *image, int kernel_fd, int initrd_fd, if (ret < 0) return ret; image->kernel_buf_len = ret; + kexec_dprintk("kernel: %p kernel_size: %#lx\n", + image->kernel_buf, image->kernel_buf_len); /* Call arch image probe handlers */ ret = arch_kexec_kernel_image_probe(image, image->kernel_buf, @@ -387,13 +389,14 @@ SYSCALL_DEFINE5(kexec_file_load, int, kernel_fd, int, initrd_fd, if (ret) goto out; + kexec_dprintk("nr_segments = %lu\n", image->nr_segments); for (i = 0; i < image->nr_segments; i++) { struct kexec_segment *ksegment; ksegment = &image->segment[i]; - pr_debug("Loading segment %d: buf=0x%p bufsz=0x%zx mem=0x%lx memsz=0x%zx\n", - i, ksegment->buf, ksegment->bufsz, ksegment->mem, - ksegment->memsz); + kexec_dprintk("segment[%d]: buf=0x%p bufsz=0x%zx mem=0x%lx memsz=0x%zx\n", + i, ksegment->buf, ksegment->bufsz, ksegment->mem, + ksegment->memsz); ret = kimage_load_segment(image, &image->segment[i]); if (ret) @@ -406,6 +409,8 @@ SYSCALL_DEFINE5(kexec_file_load, int, kernel_fd, int, initrd_fd, if (ret) goto out; + kexec_dprintk("kexec_file_load: type:%u, start:0x%lx head:0x%lx flags:0x%lx\n", + image->type, image->start, image->head, flags); /* * Free up any temporary buffers allocated which are not needed * after image has been loaded |