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author | Pu Lehui <pulehui@huawei.com> | 2024-08-31 10:15:20 +0300 |
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committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-10-01 12:47:39 +0300 |
commit | c625154993d0d24a962b1830cd5ed92adda2cf86 (patch) | |
tree | c3935c66e858293941a19df6ab95ff203558ad18 /lib/string_helpers.c | |
parent | 9852d85ec9d492ebef56dc5f229416c925758edc (diff) | |
download | linux-c625154993d0d24a962b1830cd5ed92adda2cf86.tar.xz |
drivers/perf: riscv: Align errno for unsupported perf event
RISC-V perf driver does not yet support PERF_TYPE_BREAKPOINT. It would
be more appropriate to return -EOPNOTSUPP or -ENOENT for this type in
pmu_sbi_event_map. Considering that other implementations return -ENOENT
for unsupported perf types, let's synchronize this behavior. Due to this
reason, a riscv bpf testcases perf_skip fail. Meanwhile, align that
behavior to the rest of proper place.
Signed-off-by: Pu Lehui <pulehui@huawei.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Fixes: 9b3e150e310e ("RISC-V: Add a simple platform driver for RISC-V legacy perf")
Fixes: 16d3b1af0944 ("perf: RISC-V: Check standard event availability")
Fixes: e9991434596f ("RISC-V: Add perf platform driver based on SBI PMU extension")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240831071520.1630360-1-pulehui@huaweicloud.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'lib/string_helpers.c')
0 files changed, 0 insertions, 0 deletions