diff options
| author | Raul E Rangel <rrangel@chromium.org> | 2019-06-17 10:48:55 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-06-18 01:06:45 +0000 |
| commit | 4c1a6f4872f405619f0dc4f2db477edf540fdd24 (patch) | |
| tree | 1cf3449b420d9c9f6fb8025411798c626811b7b0 | |
| parent | 24db29e174aa713cab228e3410bb0572331759d5 (diff) | |
| download | vboot-4c1a6f4872f405619f0dc4f2db477edf540fdd24.tar.gz | |
lib/vboot_kernel: Log speed at which kernel was loaded
This makes it easy to spot the speed at which the eMMC controller is
running.
vb2_load_partition: read 8419 KB in 48 ms at 174342 KB/s.
The calculation looks a little funky because I wanted to perform all
multiplications before the division to avoid losing any precision.
BRANCH=grunt
BUG=b:122244718
TEST=Verified it on grunt
Change-Id: I5fac584994bc478bfb27cbd4e2ea34af0be7f1d9
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1661366
Reviewed-by: Julius Werner <jwerner@chromium.org>
| -rw-r--r-- | firmware/lib/vboot_kernel.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/firmware/lib/vboot_kernel.c b/firmware/lib/vboot_kernel.c index 741890e4..8ac409a6 100644 --- a/firmware/lib/vboot_kernel.c +++ b/firmware/lib/vboot_kernel.c @@ -320,6 +320,7 @@ static int vb2_load_partition(struct vb2_context *ctx, VbSharedDataKernelPart *shpart, struct vb2_workbuf *wb) { + uint64_t read_us = 0, start_ts; struct vb2_workbuf wblocal = *wb; /* Allocate kernel header buffer in workbuf */ @@ -327,12 +328,13 @@ static int vb2_load_partition(struct vb2_context *ctx, if (!kbuf) return VB2_ERROR_LOAD_PARTITION_WORKBUF; - + start_ts = VbExGetTimer(); if (VbExStreamRead(stream, KBUF_SIZE, kbuf)) { VB2_DEBUG("Unable to read start of partition.\n"); shpart->check_result = VBSD_LKP_CHECK_READ_START; return VB2_ERROR_LOAD_PARTITION_READ_VBLOCK; } + read_us += VbExGetTimer() - start_ts; if (VB2_SUCCESS != vb2_verify_kernel_vblock(ctx, kbuf, KBUF_SIZE, kernel_subkey, @@ -387,11 +389,17 @@ static int vb2_load_partition(struct vb2_context *ctx, body_readptr += body_copied; /* Read the kernel data */ + start_ts = VbExGetTimer(); if (body_toread && VbExStreamRead(stream, body_toread, body_readptr)) { VB2_DEBUG("Unable to read kernel data.\n"); shpart->check_result = VBSD_LKP_CHECK_READ_DATA; return VB2_ERROR_LOAD_PARTITION_READ_BODY; } + read_us += VbExGetTimer() - start_ts; + VB2_DEBUG("read %" PRIu32 " KB in %" PRIu64 " ms at %" PRIu64 " KB/s.\n", + (body_toread + KBUF_SIZE) / 1024, read_us / 1000, + ((uint64_t)(body_toread + KBUF_SIZE) * 1000 * 1000) / + (read_us * 1024)); /* Get key for preamble/data verification from the key block. */ struct vb2_public_key data_key; |