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Mon, 15 Jun 2026 14:18:18 -0700 (PDT) From: Keshav Verma To: gregkh@linuxfoundation.org, arve@android.com, tkjos@android.com, brauner@kernel.org, cmllamas@google.com, aliceryhl@google.com Cc: ojeda@kernel.org, stable@kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Keshav Verma Subject: [PATCH v4] rust_binder: synchronize Rust Binder stats with freeze commands Date: Tue, 16 Jun 2026 02:47:43 +0530 Message-Id: <20260615211743.734-1-iganschel@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260615201737.262-1-iganschel@gmail.com> References: <20260615201737.262-1-iganschel@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Rust Binder stats use BC_COUNT and BR_COUNT to size the command and return counters, and use event string tables when printing debug statistics. The Binder protocol includes freeze-related commands and return codes, but the Rust Binder statistics code was not updated to cover them. As a result, those commands and return codes are not accounted for or printed by the stats debug output. Update the counts and event string tables so these commands and return codes are included in the debug statistics output. Fixes: eafedbc7c050 ("rust_binder: add Rust Binder driver") Cc: stable@kernel.org Acked-by: Carlos Llamas Reviewed-by: Alice Ryhl Signed-off-by: Keshav Verma --- v4: - Rename subject prefix from "binder:" to "rust_binder:" v3: - Add changelog for previous revisions. v2: - Add Fixes: tag for rust_binder introduction commit. - Cc stable@kernel.org. - Add Acked-by from Carlos Llamas. - Use real name in Signed-off-by. drivers/android/binder/rust_binder_events.c | 7 ++++++- drivers/android/binder/stats.rs | 4 ++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/android/binder/rust_binder_events.c b/drivers/android/binder/rust_binder_events.c index 488b1470060c..5792aa59cc82 100644 --- a/drivers/android/binder/rust_binder_events.c +++ b/drivers/android/binder/rust_binder_events.c @@ -28,6 +28,9 @@ const char * const binder_command_strings[] = { "BC_DEAD_BINDER_DONE", "BC_TRANSACTION_SG", "BC_REPLY_SG", + "BC_REQUEST_FREEZE_NOTIFICATION", + "BC_CLEAR_FREEZE_NOTIFICATION", + "BC_FREEZE_NOTIFICATION_DONE", }; const char * const binder_return_strings[] = { @@ -51,7 +54,9 @@ const char * const binder_return_strings[] = { "BR_FAILED_REPLY", "BR_FROZEN_REPLY", "BR_ONEWAY_SPAM_SUSPECT", - "BR_TRANSACTION_PENDING_FROZEN" + "BR_TRANSACTION_PENDING_FROZEN", + "BR_FROZEN_BINDER", + "BR_CLEAR_FREEZE_NOTIFICATION_DONE", }; #define CREATE_TRACE_POINTS diff --git a/drivers/android/binder/stats.rs b/drivers/android/binder/stats.rs index ab75e9561cbf..ec81dc7747db 100644 --- a/drivers/android/binder/stats.rs +++ b/drivers/android/binder/stats.rs @@ -8,8 +8,8 @@ use kernel::sync::atomic::{ordering::Relaxed, Atomic}; use kernel::{ioctl::_IOC_NR, seq_file::SeqFile, seq_print}; -const BC_COUNT: usize = _IOC_NR(BC_REPLY_SG) as usize + 1; -const BR_COUNT: usize = _IOC_NR(BR_TRANSACTION_PENDING_FROZEN) as usize + 1; +const BC_COUNT: usize = _IOC_NR(BC_FREEZE_NOTIFICATION_DONE) as usize + 1; +const BR_COUNT: usize = _IOC_NR(BR_CLEAR_FREEZE_NOTIFICATION_DONE) as usize + 1; pub(crate) static GLOBAL_STATS: BinderStats = BinderStats::new(); -- 2.39.5