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| author | Marco Elver <elver@google.com> | 2020-07-31 10:17:20 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2020-08-25 00:10:22 +0200 |
| commit | a4e74fa5f0d3e2a11f2d0deb522681d219a81426 (patch) | |
| tree | 896f5a73f46186634b58584b25787c4ac804ac01 /kernel/kcsan/report.c | |
| parent | kcsan: Simplify debugfs counter to name mapping (diff) | |
| download | linux-a4e74fa5f0d3e2a11f2d0deb522681d219a81426.tar.xz linux-a4e74fa5f0d3e2a11f2d0deb522681d219a81426.zip | |
kcsan: Simplify constant string handling
Simplify checking prefixes and length calculation of constant strings.
For the former, the kernel provides str_has_prefix(), and the latter we
should just use strlen("..") because GCC and Clang have optimizations
that optimize these into constants.
No functional change intended.
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/kcsan/report.c')
| -rw-r--r-- | kernel/kcsan/report.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/kcsan/report.c b/kernel/kcsan/report.c index 3e83a69239fa..bf1d59449805 100644 --- a/kernel/kcsan/report.c +++ b/kernel/kcsan/report.c @@ -279,8 +279,8 @@ static int get_stack_skipnr(const unsigned long stack_entries[], int num_entries cur = strnstr(buf, "kcsan_", len); if (cur) { - cur += sizeof("kcsan_") - 1; - if (strncmp(cur, "test", sizeof("test") - 1)) + cur += strlen("kcsan_"); + if (!str_has_prefix(cur, "test")) continue; /* KCSAN runtime function. */ /* KCSAN related test. */ } |