From d22c3e0088e85be8131f7a9283f759cdbb20726d Mon Sep 17 00:00:00 2001 From: Sven Schnelle Date: Wed, 9 Sep 2026 11:29:53 +0200 Subject: selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tc The current regex also matches symbols in modules, which makes the test fail on s390 where name_show is present only once in the kernel, but also multiple times in modules: 000001b1401cdc20 t name_show 000001b0c05e6c40 t name_show [mdev] 000001b0c0495f30 t name_show [i2c_core] Fix this by changing the regular expression to only match the function name. Link: https://lore.kernel.org/all/20260909092954.2200558-1-svens@linux.ibm.com/ Fixes: 03b80ff8023a ("selftests/ftrace: Add new test case which checks non unique symbol") Signed-off-by: Sven Schnelle Reviewed-by: Steven Rostedt Signed-off-by: Masami Hiramatsu (Google) --- lib/crypto/powerpc/sha1.h | 67 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 lib/crypto/powerpc/sha1.h (limited to 'lib/crypto/powerpc/sha1.h') diff --git a/lib/crypto/powerpc/sha1.h b/lib/crypto/powerpc/sha1.h new file mode 100644 index 000000000..e2c010f03 --- /dev/null +++ b/lib/crypto/powerpc/sha1.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * SHA-1 optimized for PowerPC + * + * Copyright (c) 2015 Markus Stockhausen + */ + +#include +#include + +#ifdef CONFIG_SPE +/* + * MAX_BYTES defines the number of bytes that are allowed to be processed + * between preempt_disable() and preempt_enable(). SHA1 takes ~1000 + * operations per 64 bytes. e500 cores can issue two arithmetic instructions + * per clock cycle using one 32/64 bit unit (SU1) and one 32 bit unit (SU2). + * Thus 2KB of input data will need an estimated maximum of 18,000 cycles. + * Headroom for cache misses included. Even with the low end model clocked + * at 667 MHz this equals to a critical time window of less than 27us. + * + */ +#define MAX_BYTES 2048 + +asmlinkage void ppc_spe_sha1_transform(struct sha1_block_state *state, + const u8 *data, u32 nblocks); + +static void spe_begin(void) +{ + /* We just start SPE operations and will save SPE registers later. */ + preempt_disable(); + enable_kernel_spe(); +} + +static void spe_end(void) +{ + disable_kernel_spe(); + /* reenable preemption */ + preempt_enable(); +} + +static void sha1_blocks(struct sha1_block_state *state, + const u8 *data, size_t nblocks) +{ + do { + u32 unit = min_t(size_t, nblocks, MAX_BYTES / SHA1_BLOCK_SIZE); + + spe_begin(); + ppc_spe_sha1_transform(state, data, unit); + spe_end(); + + data += unit * SHA1_BLOCK_SIZE; + nblocks -= unit; + } while (nblocks); +} +#else /* CONFIG_SPE */ +asmlinkage void powerpc_sha_transform(struct sha1_block_state *state, + const u8 data[SHA1_BLOCK_SIZE]); + +static void sha1_blocks(struct sha1_block_state *state, + const u8 *data, size_t nblocks) +{ + do { + powerpc_sha_transform(state, data); + data += SHA1_BLOCK_SIZE; + } while (--nblocks); +} +#endif /* !CONFIG_SPE */ -- cgit v1.3.1