From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Marco Elver <elver@google.com>
Cc: Bart Van Assche <bvanassche@acm.org>,
Jiri Olsa <jolsa@kernel.org>, Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
James Clark <james.clark@linaro.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
Lorenzo Stoakes <ljs@kernel.org>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
llvm@lists.linux.dev
Subject: [PATCH v1 01/10] compiler-context-analysis: Avoid unused parameter warning in _context_unsafe_alias()
Date: Tue, 13 Oct 2026 11:24:49 -0700 [thread overview]
Message-ID: <20261013182458.1234616-2-irogers@google.com> (raw)
In-Reply-To: <20261013182458.1234616-1-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().
Assisted-by: Antigravity:gemini-3.1-pro
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
--
2.56.0.385.gd3acb90ef8-goog
next prev parent reply other threads:[~2026-10-13 18:26 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-13 18:24 [PATCH v1 00/10] tools/perf: Adopt kernel compiler-context-analysis.h annotations Ian Rogers
2026-10-13 18:24 ` Ian Rogers [this message]
2026-10-13 18:30 ` [PATCH v1 01/10] compiler-context-analysis: Avoid unused parameter warning in _context_unsafe_alias() sashiko-bot
2026-10-13 19:44 ` Bart Van Assche
2026-10-13 18:24 ` [PATCH v1 02/10] tools headers compiler: Synchronize compiler_types.h with the kernel sources Ian Rogers
2026-10-13 18:33 ` sashiko-bot
2026-10-13 18:24 ` [PATCH v1 03/10] tools headers: Synchronize linux/compiler-context-analysis.h " Ian Rogers
2026-10-13 18:34 ` sashiko-bot
2026-10-13 18:24 ` [PATCH v1 04/10] perf mutex: Use kernel style compiler-context-analysis.h annotations Ian Rogers
2026-10-13 18:36 ` sashiko-bot
2026-10-13 18:24 ` [PATCH v1 05/10] perf build: Enable additional Clang thread-safety flags Ian Rogers
2026-10-13 18:35 ` sashiko-bot
2026-10-13 18:24 ` [PATCH v1 06/10] perf comm: Add __guarded_by annotations to struct comm_strs Ian Rogers
2026-10-13 18:35 ` sashiko-bot
2026-10-13 18:24 ` [PATCH v1 07/10] perf dso: Fix unlocked __dsos__add() in vdso and expand lock annotations Ian Rogers
2026-10-13 18:41 ` sashiko-bot
2026-10-13 18:24 ` [PATCH v1 08/10] perf thread: Expand context analysis annotations to threads and namespaces_lock Ian Rogers
2026-10-13 18:35 ` sashiko-bot
2026-10-13 18:24 ` [PATCH v1 09/10] perf config, intel-tpebs, env: Add __guarded_by and __must_hold annotations Ian Rogers
2026-10-13 18:42 ` sashiko-bot
2026-10-13 18:24 ` [PATCH v1 10/10] perf maps: Add context analysis annotations Ian Rogers
2026-10-13 18:43 ` sashiko-bot
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