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 replace pr_notice() with kexec_dprintk() in elf_kexec_load()
because loaded location of purgatory and device tree are only printed
out for debugging, it doesn't make sense to always print them out.

And also remove kexec_image_info() because the content has been printed
out in generic code.

Signed-off-by: Baoquan He <bhe@redhat.com>
---
 arch/riscv/kernel/elf_kexec.c     | 11 ++++++-----
 arch/riscv/kernel/machine_kexec.c | 26 --------------------------
 2 files changed, 6 insertions(+), 31 deletions(-)

diff --git a/arch/riscv/kernel/elf_kexec.c b/arch/riscv/kernel/elf_kexec.c
index e60fbd8660c4..5bd1ec3341fe 100644
--- a/arch/riscv/kernel/elf_kexec.c
+++ b/arch/riscv/kernel/elf_kexec.c
@@ -216,7 +216,6 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
 	if (ret)
 		goto out;
 	kernel_start = image->start;
-	pr_notice("The entry point of kernel at 0x%lx\n", image->start);
 
 	/* Add the kernel binary to the image */
 	ret = riscv_kexec_elf_load(image, &ehdr, &elf_info,
@@ -252,8 +251,8 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
 		image->elf_load_addr = kbuf.mem;
 		image->elf_headers_sz = headers_sz;
 
-		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);
 
 		/* Setup cmdline for kdump kernel case */
 		modified_cmdline = setup_kdump_cmdline(image, cmdline,
@@ -275,6 +274,8 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
 		pr_err("Error loading purgatory ret=%d\n", ret);
 		goto out;
 	}
+	kexec_dprintk("Loaded purgatory at 0x%lx\n", kbuf.mem);
+
 	ret = kexec_purgatory_get_set_symbol(image, "riscv_kernel_entry",
 					     &kernel_start,
 					     sizeof(kernel_start), 0);
@@ -293,7 +294,7 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
 		if (ret)
 			goto out;
 		initrd_pbase = kbuf.mem;
-		pr_notice("Loaded initrd at 0x%lx\n", initrd_pbase);
+		kexec_dprintk("Loaded initrd at 0x%lx\n", initrd_pbase);
 	}
 
 	/* Add the DTB to the image */
@@ -318,7 +319,7 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
 	}
 	/* Cache the fdt buffer address for memory cleanup */
 	image->arch.fdt = fdt;
-	pr_notice("Loaded device tree at 0x%lx\n", kbuf.mem);
+	kexec_dprintk("Loaded device tree at 0x%lx\n", kbuf.mem);
 	goto out;
 
 out_free_fdt:
diff --git a/arch/riscv/kernel/machine_kexec.c b/arch/riscv/kernel/machine_kexec.c
index 2d139b724bc8..ed9cad20c039 100644
--- a/arch/riscv/kernel/machine_kexec.c
+++ b/arch/riscv/kernel/machine_kexec.c
@@ -18,30 +18,6 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 
-/*
- * kexec_image_info - Print received image details
- */
-static void
-kexec_image_info(const struct kimage *image)
-{
-	unsigned long i;
-
-	pr_debug("Kexec image info:\n");
-	pr_debug("\ttype:        %d\n", image->type);
-	pr_debug("\tstart:       %lx\n", image->start);
-	pr_debug("\thead:        %lx\n", image->head);
-	pr_debug("\tnr_segments: %lu\n", image->nr_segments);
-
-	for (i = 0; i < image->nr_segments; i++) {
-		pr_debug("\t    segment[%lu]: %016lx - %016lx", i,
-			image->segment[i].mem,
-			image->segment[i].mem + image->segment[i].memsz);
-		pr_debug("\t\t0x%lx bytes, %lu pages\n",
-			(unsigned long) image->segment[i].memsz,
-			(unsigned long) image->segment[i].memsz /  PAGE_SIZE);
-	}
-}
-
 /*
  * machine_kexec_prepare - Initialize kexec
  *
@@ -60,8 +36,6 @@ machine_kexec_prepare(struct kimage *image)
 	unsigned int control_code_buffer_sz = 0;
 	int i = 0;
 
-	kexec_image_info(image);
-
 	/* Find the Flattened Device Tree and save its physical address */
 	for (i = 0; i < image->nr_segments; i++) {
 		if (image->segment[i].memsz <= sizeof(fdt))
-- 
2.41.0

On Wed, Dec 13, 2023 at 01:57:45PM +0800, Baoquan He wrote:
> 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 replace pr_notice() with kexec_dprintk() in elf_kexec_load()
> because loaded location of purgatory and device tree are only printed
> out for debugging, it doesn't make sense to always print them out.
> 
> And also remove kexec_image_info() because the content has been printed
> out in generic code.
> 
> Signed-off-by: Baoquan He <bhe@redhat.com>

I'm sorry - I meant to look at this several days ago but I forgot.
Apart from the typo that crept back into $subject, this version explains
the rationale behind what you're changing a lot better, thanks.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

Cheers,
Conor.

On 12/19/23 at 02:44pm, Conor Dooley wrote:
> On Wed, Dec 13, 2023 at 01:57:45PM +0800, Baoquan He wrote:
> > 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 replace pr_notice() with kexec_dprintk() in elf_kexec_load()
> > because loaded location of purgatory and device tree are only printed
> > out for debugging, it doesn't make sense to always print them out.
> > 
> > And also remove kexec_image_info() because the content has been printed
> > out in generic code.
> > 
> > Signed-off-by: Baoquan He <bhe@redhat.com>
> 
> I'm sorry - I meant to look at this several days ago but I forgot.
> Apart from the typo that crept back into $subject, this version explains
> the rationale behind what you're changing a lot better, thanks.

Thanks for careful checking. I forgot the typo fixing you have pointed
out in v3 reviewing.

Hi Andrew,

Could you help fix the typo in subject?

[PATCH v4 5/7] kexec_file, ricv: print out debugging message if required
                           ~~~ s/ricv/riscv/

On Wed, 20 Dec 2023 12:22:29 +0800 Baoquan He <bhe@redhat.com> wrote:

> Could you help fix the typo in subject?
> 
> [PATCH v4 5/7] kexec_file, ricv: print out debugging message if required
>                            ~~~ s/ricv/riscv/

I made that change.

On 12/20/23 at 07:46am, Andrew Morton wrote:
> On Wed, 20 Dec 2023 12:22:29 +0800 Baoquan He <bhe@redhat.com> wrote:
> 
> > Could you help fix the typo in subject?
> > 
> > [PATCH v4 5/7] kexec_file, ricv: print out debugging message if required
> >                            ~~~ s/ricv/riscv/
> 
> I made that change.

Thanks a lot.