From: Ian Rogers <irogers@google.com>
To: irogers@google.com, acme@kernel.org, namhyung@kernel.org
Cc: adrian.hunter@intel.com, bvanassche@acm.org, elver@google.com,
james.clark@linaro.org, jolsa@kernel.org,
justinstitt@google.com, linux-kernel@vger.kernel.org,
linux-perf-users@vger.kernel.org, llvm@lists.linux.dev,
mingo@redhat.com, morbo@google.com, nathan@kernel.org,
ndesaulniers@google.com, peterz@infradead.org
Subject: [PATCH v10 01/20] compiler-context-analysis: Avoid unused parameter warning in _context_unsafe_alias()
Date: Thu, 5 Nov 2026 23:03:25 -0800 [thread overview]
Message-ID: <20261106070344.329897-2-irogers@google.com> (raw)
In-Reply-To: <20261106070344.329897-1-irogers@google.com>
_context_unsafe_alias() does not use its parameter 'p', which triggers
-Wunused-parameter when building code that enables -Wextra (such as
tools/perf, tools/lib/perf, tools/lib/subcmd, and tools/lib/symbol).
Explicitly cast 'p' to void to silence the warning, matching
__assume_ctx_lock() and __assume_shared_ctx_lock().
Reviewed-by: Marco Elver <elver@google.com>
Signed-off-by: Ian Rogers <irogers@google.com>
---
include/linux/compiler-context-analysis.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/compiler-context-analysis.h b/include/linux/compiler-context-analysis.h
index 8302ebc2ea8c..024e303188ad 100644
--- a/include/linux/compiler-context-analysis.h
+++ b/include/linux/compiler-context-analysis.h
@@ -243,7 +243,7 @@
* alias as a function argument).
*/
#define context_unsafe_alias(p) _context_unsafe_alias((void **)&(p))
-static inline void _context_unsafe_alias(void **p) { }
+static inline void _context_unsafe_alias(void **p) { (void)p; }
/**
* token_context_lock() - declare an abstract global context lock instance
--
2.56.0.455.g6c5a503b38-goog
next prev parent reply other threads:[~2026-11-06 7:03 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-06 7:03 [PATCH v10 00/20] tools/perf: Adopt kernel compiler-context-analysis.h annotations Ian Rogers
2026-11-06 7:03 ` Ian Rogers [this message]
2026-11-06 18:22 ` [PATCH v10 01/20] compiler-context-analysis: Avoid unused parameter warning in _context_unsafe_alias() Bart Van Assche
2026-11-06 7:03 ` [PATCH v10 02/20] tools headers compiler: Synchronize compiler_types.h with the kernel sources Ian Rogers
2026-11-06 7:03 ` [PATCH v10 03/20] tools headers: Synchronize linux/compiler-context-analysis.h " Ian Rogers
2026-11-06 7:03 ` [PATCH v10 04/20] perf mutex: Use kernel style compiler-context-analysis.h annotations Ian Rogers
2026-11-06 7:03 ` [PATCH v10 05/20] perf build: Enable additional Clang thread-safety flags Ian Rogers
2026-11-06 7:03 ` [PATCH v10 06/20] perf comm: Add __guarded_by annotations to struct comm_strs Ian Rogers
2026-11-06 7:03 ` [PATCH v10 07/20] perf vdso: Fix unlocked __dsos__add() and race in __machine__addnew_vdso() Ian Rogers
2026-11-06 7:03 ` [PATCH v10 08/20] perf dsos: Skip BPF and OOL DSOs in dsos__find_kernel_dso() Ian Rogers
2026-11-06 7:03 ` [PATCH v10 09/20] perf dsos: Ensure DSOs in auxtrace, machine, and symbol are in dsos Ian Rogers
2026-11-06 7:03 ` [PATCH v10 10/20] perf dso: Pass dso_data to close_data_fd() and dso__list_del() Ian Rogers
2026-11-06 7:03 ` [PATCH v10 11/20] perf dso: Use DEFINE_MUTEX for dso__data_open_lock Ian Rogers
2026-11-06 7:03 ` [PATCH v10 12/20] perf dsos: Use read lock fast path in dsos__findnew_id() Ian Rogers
2026-11-06 7:03 ` [PATCH v10 13/20] perf dso: Expand context analysis annotations Ian Rogers
2026-11-06 7:03 ` [PATCH v10 14/20] perf thread: Expand context analysis annotations to threads and namespaces_lock Ian Rogers
2026-11-06 7:03 ` [PATCH v10 15/20] perf intel-tpebs: Fix race in tpebs_stop() and tpebs_cmd.out fd handling Ian Rogers
2026-11-06 7:03 ` [PATCH v10 16/20] perf intel-tpebs: Use DEFINE_MUTEX for tpebs_mtx Ian Rogers
2026-11-06 7:03 ` [PATCH v10 17/20] perf config, intel-tpebs, env: Add __guarded_by and __must_hold annotations Ian Rogers
2026-11-06 7:03 ` [PATCH v10 18/20] perf maps: Fix lock inversion in maps__load_first() Ian Rogers
2026-11-06 7:03 ` [PATCH v10 19/20] perf maps: Fix map index lookup fallback and removal Ian Rogers
2026-11-06 7:03 ` [PATCH v10 20/20] perf maps: Add context analysis annotations Ian Rogers
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