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| author | Josephine Pfeiffer <hi@josie.lol> | 2025-10-27 11:40:43 -0600 |
|---|---|---|
| committer | Paul Walmsley <pjw@kernel.org> | 2025-10-27 11:40:43 -0600 |
| commit | a74f038fa50e0d33b740f44f862fe856f16de6a8 (patch) | |
| tree | c64e8b2f2242ac6a12bd82a0eddaeb2e8a90cf87 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | riscv: stacktrace: Disable KASAN checks for non-current tasks (diff) | |
| download | linux-a74f038fa50e0d33b740f44f862fe856f16de6a8.tar.gz linux-a74f038fa50e0d33b740f44f862fe856f16de6a8.zip | |
riscv: ptdump: use seq_puts() in pt_dump_seq_puts() macro
The pt_dump_seq_puts() macro incorrectly uses seq_printf() instead of
seq_puts(). This is both a performance issue and conceptually wrong,
as the macro name suggests plain string output (puts) but the
implementation uses formatted output (printf).
The macro is used in ptdump.c:301 to output a newline character. Using
seq_printf() adds unnecessary overhead for format string parsing when
outputting this constant string.
This bug was introduced in commit 59c4da8640cc ("riscv: Add support to
dump the kernel page tables") in 2020, which copied the implementation
pattern from other architectures that had the same bug.
Fixes: 59c4da8640cc ("riscv: Add support to dump the kernel page tables")
Signed-off-by: Josephine Pfeiffer <hi@josie.lol>
Link: https://lore.kernel.org/r/20251018170451.3355496-1-hi@josie.lol
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions