| Message ID | 20250919201507.4024144-3-sjg@u-boot.org |
|---|---|
| State | New |
| Headers |
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Fri, 19 Sep 2025 14:15:36 -0600 (MDT) From: Simon Glass <sjg@u-boot.org> To: U-Boot Concept <concept@u-boot.org> Date: Fri, 19 Sep 2025 14:14:09 -0600 Message-ID: <20250919201507.4024144-3-sjg@u-boot.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250919201507.4024144-1-sjg@u-boot.org> References: <20250919201507.4024144-1-sjg@u-boot.org> MIME-Version: 1.0 Message-ID-Hash: UASD4SI3QAQ733DCTVV6T5CZHKVLFFDK X-Message-ID-Hash: UASD4SI3QAQ733DCTVV6T5CZHKVLFFDK X-MailFrom: sjg@u-boot.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Heinrich Schuchardt <xypron.glpk@gmx.de>, Simon Glass <sjg@chromium.org> X-Mailman-Version: 3.3.10 Precedence: list Subject: [Concept] [PATCH 02/42] cyclic: Avoid showing messages when debugging List-Id: Discussion and patches related to U-Boot Concept <concept.u-boot.org> Archived-At: <https://lists.u-boot.org/archives/list/concept@u-boot.org/message/UASD4SI3QAQ733DCTVV6T5CZHKVLFFDK/> List-Archive: <https://lists.u-boot.org/archives/list/concept@u-boot.org/> List-Help: <mailto:concept-request@u-boot.org?subject=help> List-Owner: <mailto:concept-owner@u-boot.org> List-Post: <mailto:concept@u-boot.org> List-Subscribe: <mailto:concept-join@u-boot.org> List-Unsubscribe: <mailto:concept-leave@u-boot.org> Content-Type: text/plain; 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video: Support a cursor more generally
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Commit Message
Simon Glass
Sept. 19, 2025, 8:14 p.m. UTC
From: Simon Glass <sjg@chromium.org> When using a debugger it is common to single step through functions. If one of those functions happens to be called from a cyclic function, then a warning messages is shown. When debugging the console itself, this can mess up the session. Add a Kconfig to control whether the message is shown. Disable it by default if CONFIG_CC_OPTIMIZE_FOR_DEBUG is enabled. Signed-off-by: Simon Glass <sjg@chromium.org> --- common/Kconfig | 9 +++++++++ common/cyclic.c | 5 +++-- 2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/common/Kconfig b/common/Kconfig index 55e9bcdfa2b..3bd11f44c51 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -666,6 +666,15 @@ config CYCLIC_MAX_CPU_TIME_US takes longer than this duration this function will get unregistered automatically. +config CYCLIC_WARN_LATE + bool "Warn if a cyclic function takes too long" + default y if !CC_OPTIMIZE_FOR_DEBUG + help + Show a warning on the console if a cyclic function goes over the + alotted maximum time. The message is of the form: + + cyclic_run() cyclic function <func_name> took too long: x vs y max + endif # CYCLIC config EVENT diff --git a/common/cyclic.c b/common/cyclic.c index 196797fd61e..e5a2ad302af 100644 --- a/common/cyclic.c +++ b/common/cyclic.c @@ -71,8 +71,9 @@ static void cyclic_run(void) cyclic->cpu_time_us += cpu_time; /* Check if cpu-time exceeds max allowed time */ - if ((cpu_time > CONFIG_CYCLIC_MAX_CPU_TIME_US) && - (!cyclic->already_warned)) { + if (IS_ENABLED(CONFIG_CYCLIC_WARN_LATE) && + cpu_time > CONFIG_CYCLIC_MAX_CPU_TIME_US && + !cyclic->already_warned) { pr_err("cyclic function %s took too long: %lldus vs %dus max\n", cyclic->name, cpu_time, CONFIG_CYCLIC_MAX_CPU_TIME_US);