kernel.h: drop STACK_MAGIC macro

Patch series "Unload linux/kernel.h", v5.

kernel.h hosts declarations that can be placed better.  This series
decouples kernel.h with some explicit and implicit dependencies; also,
moves tracing functionality to a new independent header.

This patch (of 6):

The macro was introduced in 1994, v1.0.4, for stacks protection.  Since
that, people found better ways to protect stacks, and now the macro is
only used by i915 selftests.  Move it to a local header and drop from the
kernel.h.

Link: https://lkml.kernel.org/r/20260116042510.241009-1-ynorov@nvidia.com
Link: https://lkml.kernel.org/r/20260116042510.241009-2-ynorov@nvidia.com
Signed-off-by: Yury Norov <ynorov@nvidia.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Reviewed-by: Aaron Tomlin <atomlin@atomlin.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Petr Pavlu <petr.pavlu@suse.com>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/drivers/gpu/drm/i915/gt/selftest_ring_submission.c b/drivers/gpu/drm/i915/gt/selftest_ring_submission.c
index 87ceb0f374b6730802e32adc2298104d443a940a..600333ae6c8c1f404c23a43343bcecb466922f58 100644 (file)
--- a/drivers/gpu/drm/i915/gt/selftest_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/selftest_ring_submission.c
@@ -3,6 +3,7 @@
  * Copyright © 2020 Intel Corporation
  */
 
+#include "i915_selftest.h"
 #include "intel_engine_pm.h"
 #include "selftests/igt_flush_test.h"
 

diff --git a/drivers/gpu/drm/i915/i915_selftest.h b/drivers/gpu/drm/i915/i915_selftest.h
index bdf3e22c0a34d96253eb2c8741b8b4ed9e3d7113..72922028f4ba1189e80a76eef83478b44991826f 100644 (file)
--- a/drivers/gpu/drm/i915/i915_selftest.h
+++ b/drivers/gpu/drm/i915/i915_selftest.h
@@ -26,6 +26,8 @@
 
 #include <linux/types.h>
 
+#define STACK_MAGIC    0xdeadbeef
+
 struct pci_dev;
 struct drm_i915_private;
 

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 35b8f2a5aca517e860a58cccbaefc701d5554f99..cefe733a0c10e36015f7d5ee5d98f8bd9e8da369 100644 (file)
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -39,8 +39,6 @@
 
 #include <uapi/linux/kernel.h>
 
-#define STACK_MAGIC    0xdeadbeef
-
 struct completion;
 struct user;