From 2a04f7037317c6c5b591b160a074c700de9b3378 Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Thu, 20 Apr 2023 14:02:37 +0530 Subject: [PATCH] lib: sbi: Print scratch size and usage at boot time The scratch space being a scarce resource so let us print it's size and usage at boot time. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones --- include/sbi/sbi_scratch.h | 3 +++ lib/sbi/sbi_init.c | 5 +++++ lib/sbi/sbi_scratch.c | 11 +++++++++++ 3 files changed, 19 insertions(+) diff --git a/include/sbi/sbi_scratch.h b/include/sbi/sbi_scratch.h index 9894c70..4801492 100644 --- a/include/sbi/sbi_scratch.h +++ b/include/sbi/sbi_scratch.h @@ -175,6 +175,9 @@ unsigned long sbi_scratch_alloc_offset(unsigned long size); /** Free-up extra space in sbi_scratch */ void sbi_scratch_free_offset(unsigned long offset); +/** Amount (in bytes) of used space in in sbi_scratch */ +unsigned long sbi_scratch_used_space(void); + /** Get pointer from offset in sbi_scratch */ #define sbi_scratch_offset_ptr(scratch, offset) (void *)((char *)(scratch) + (offset)) diff --git a/lib/sbi/sbi_init.c b/lib/sbi/sbi_init.c index a170525..423e6d8 100644 --- a/lib/sbi/sbi_init.c +++ b/lib/sbi/sbi_init.c @@ -128,6 +128,11 @@ static void sbi_boot_print_general(struct sbi_scratch *scratch) (u32)(sbi_heap_reserved_space() / 1024), (u32)(sbi_heap_used_space() / 1024), (u32)(sbi_heap_free_space() / 1024)); + sbi_printf("Firmware Scratch Size : " + "%d B (total), %d B (used), %d B (free)\n", + SBI_SCRATCH_SIZE, + (u32)sbi_scratch_used_space(), + (u32)(SBI_SCRATCH_SIZE - sbi_scratch_used_space())); /* SBI details */ sbi_printf("Runtime SBI Version : %d.%d\n", diff --git a/lib/sbi/sbi_scratch.c b/lib/sbi/sbi_scratch.c index 55ebdbb..87ef84c 100644 --- a/lib/sbi/sbi_scratch.c +++ b/lib/sbi/sbi_scratch.c @@ -97,3 +97,14 @@ void sbi_scratch_free_offset(unsigned long offset) * brain-dead allocator. */ } + +unsigned long sbi_scratch_used_space(void) +{ + unsigned long ret = 0; + + spin_lock(&extra_lock); + ret = extra_offset; + spin_unlock(&extra_lock); + + return ret; +}