public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-18 22:14:16 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

lib/crc_kunit.c: update comment in crc_benchmark()

Browse source 
None of the CRC library functions use __pure anymore, so the comment in
crc_benchmark() is outdated.  But the comment was not really correct
anyway, since the CRC computation could (in principle) be optimized out
regardless of __pure.  Update the comment to have a proper explanation.

Link: https://lore.kernel.org/r/20250305015830.37813-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Eric Biggers 2025-03-04 17:58:30 -08:00
parent 7715f8cfe5
commit 415999ea30
1 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
lib/crc_kunit.c
View file

@ -226,8 +226,9 @@ crc_benchmark(struct kunit *test,
};
size_t len, i, j, num_iters;
/*
* Some of the CRC library functions are marked as __pure, so use
* volatile to ensure that all calls are really made as intended.
* The CRC value that this function computes in a series of calls to
* crc_func is never actually used, so use volatile to ensure that the
* computations are done as intended and don't all get optimized out.
*/
volatile u64 crc = 0;
u64 t;