linux-kernel - linux-next: build failure after merge of the paulmck tree

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Date: Wed, 19 Jun 2024 14:49:30 +0100
From: Mark Brown <broonie@...nel.org>
To: "Paul E. McKenney" <paulmck@...nel.org>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the paulmck tree

Hi all,

After merging the paulmck tree, today's linux-next build (arm64
defconfig) failed like this:

/tmp/next/build/kernel/time/clocksource.c: In function '__clocksource_update_freq_scale':
/tmp/next/build/kernel/time/clocksource.c:136:25: error: 'CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US' undeclared (first use in this function)
  136 | #define MAX_SKEW_USEC   CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/next/build/kernel/time/clocksource.c:136:25: note: in definition of macro 'MAX_SKEW_USEC'
  136 | #define MAX_SKEW_USEC   CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/next/build/kernel/time/clocksource.c:1167:50: note: in expansion of macro 'WATCHDOG_MAX_SKEW'
 1167 |                 if (cs->uncertainty_margin < 2 * WATCHDOG_MAX_SKEW)
      |                                                  ^~~~~~~~~~~~~~~~~
/tmp/next/build/kernel/time/clocksource.c:136:25: note: each undeclared identifier is reported only once for each function it appears in
  136 | #define MAX_SKEW_USEC   CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/next/build/kernel/time/clocksource.c:136:25: note: in definition of macro 'MAX_SKEW_USEC'
  136 | #define MAX_SKEW_USEC   CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/next/build/kernel/time/clocksource.c:1167:50: note: in expansion of macro 'WATCHDOG_MAX_SKEW'
 1167 |                 if (cs->uncertainty_margin < 2 * WATCHDOG_MAX_SKEW)
      |                                                  ^~~~~~~~~~~~~~~~~


Caused by commit

  5800c05045dbfe ("clocksource: Take advantage of always-defined CLOCKSOURCE_WATCHDOG_MAX_SKEW_US")

I have used the tree from yesterday instead.

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