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| author | Raul E Rangel <rrangel@chromium.org> | 2019-06-17 10:48:55 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-06-18 17:38:08 +0000 |
| commit | 177a8856284536064e297bdbd29456d2597a0fa1 (patch) | |
| tree | ef636f813cbe0cf9e0209b6e6c08b88af6befe9a | |
| parent | 63be7c35d788405c0eb851416f5bef9e7185183c (diff) | |
| download | vboot-177a8856284536064e297bdbd29456d2597a0fa1.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>
(cherry picked from commit 4c1a6f4872f405619f0dc4f2db477edf540fdd24)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1664759
| -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 8d74f997..2ba03361 100644 --- a/firmware/lib/vboot_kernel.c +++ b/firmware/lib/vboot_kernel.c @@ -320,6 +320,7 @@ int vb2_load_partition(struct vb2_context *ctx, uint32_t min_version, VbSharedDataKernelPart *shpart) { + uint64_t read_us = 0, start_ts; struct vb2_workbuf wblocal; vb2_workbuf_from_ctx(ctx, &wblocal); @@ -328,12 +329,13 @@ 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, @@ -388,11 +390,17 @@ 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; |