From: James Clark <james.clark@linaro.org>
To: Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@linaro.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jonathan Corbet <corbet@lwn.net>, Leo Yan <leo.yan@arm.com>
Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
James Clark <james.clark@linaro.org>
Subject: [PATCH 3/6] coresight: Repack struct etmv4_drvdata
Date: Mon, 11 Aug 2025 10:32:08 +0100 [thread overview]
Message-ID: <20250811-james-cs-syncfreq-v1-3-b001cd6e3404@linaro.org> (raw)
In-Reply-To: <20250811-james-cs-syncfreq-v1-0-b001cd6e3404@linaro.org>
Fix holes and convert the long list of bools to single bits to save
some space because there's one of these for each ETM.
Signed-off-by: James Clark <james.clark@linaro.org>
---
drivers/hwtracing/coresight/coresight-etm4x.h | 39 ++++++++++++++-------------
1 file changed, 20 insertions(+), 19 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h
index a355a1e9606d..1c67b263b01b 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.h
+++ b/drivers/hwtracing/coresight/coresight-etm4x.h
@@ -1020,29 +1020,30 @@ struct etmv4_drvdata {
u8 ns_ex_level;
u8 q_support;
u8 os_lock_model;
- bool sticky_enable;
- bool boot_enable;
- bool os_unlock;
- bool instrp0;
- bool q_filt;
- bool trcbb;
- bool trccond;
- bool retstack;
- bool trccci;
- bool trc_error;
- bool syncpr;
- bool stallctl;
- bool sysstall;
- bool nooverflow;
- bool atbtrig;
- bool lpoverride;
+ bool sticky_enable : 1;
+ bool boot_enable : 1;
+ bool os_unlock : 1;
+ bool instrp0 : 1;
+ bool q_filt : 1;
+ bool trcbb : 1;
+ bool trccond : 1;
+ bool retstack : 1;
+ bool trccci : 1;
+ bool trc_error : 1;
+ bool syncpr : 1;
+ bool stallctl : 1;
+ bool sysstall : 1;
+ bool nooverflow : 1;
+ bool atbtrig : 1;
+ bool lpoverride : 1;
+ bool state_needs_restore : 1;
+ bool skip_power_up : 1;
+ bool paused : 1;
u64 trfcr;
struct etmv4_config config;
u64 save_trfcr;
struct etmv4_save_state *save_state;
- bool state_needs_restore;
- bool skip_power_up;
- bool paused;
+
DECLARE_BITMAP(arch_features, ETM4_IMPDEF_FEATURE_MAX);
};
--
2.34.1
next prev parent reply other threads:[~2025-08-11 9:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-11 9:32 [PATCH 0/6] coresight: Add format attribute for setting the timestamp interval James Clark
2025-08-11 9:32 ` [PATCH 1/6] coresight: Change syncfreq to be a u8 James Clark
2025-08-11 9:32 ` [PATCH 2/6] coresight: Fix holes in struct etmv4_config James Clark
2025-08-14 12:37 ` Mike Leach
2025-08-11 9:32 ` James Clark [this message]
2025-08-14 12:38 ` [PATCH 3/6] coresight: Repack struct etmv4_drvdata Mike Leach
2025-08-11 9:32 ` [PATCH 4/6] coresight: Refactor etm4_config_timestamp_event() James Clark
2025-08-11 9:32 ` [PATCH 5/6] coresight: Add format attribute for setting the timestamp interval James Clark
2025-08-12 2:27 ` kernel test robot
2025-08-11 9:32 ` [PATCH 6/6] coresight: docs: Document etm4x ts_interval James Clark
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