diff options
| author | Peter Zijlstra | 2020-06-30 16:49:05 +0200 |
|---|---|---|
| committer | Peter Zijlstra | 2020-07-08 11:39:00 +0200 |
| commit | 85c2ce9104eb93517db2037699471c517e81f9b4 (patch) | |
| tree | 536dbf3aa607a4790c41de956567413ba1468428 /kernel/sched | |
| parent | faa2fd7cbad4609d06d7904c0a80cf2f8cd23678 (diff) | |
sched, vmlinux.lds: Increase STRUCT_ALIGNMENT to 64 bytes for GCC-4.9
For some mysterious reason GCC-4.9 has a 64 byte section alignment for
structures, all other GCC versions (and Clang) tested (including 4.8
and 5.0) are fine with the 32 bytes alignment.
Getting this right is important for the new SCHED_DATA macro that
creates an explicitly ordered array of 'struct sched_class' in the
linker script and expect pointer arithmetic to work.
Fixes: c3a340f7e7ea ("sched: Have sched_class_highest define by vmlinux.lds.h")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200630144905.GX4817@hirez.programming.kicks-ass.net
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/sched.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 5aa6661ecaf1..9bef2dd01247 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -67,6 +67,7 @@ #include <linux/tsacct_kern.h> #include <asm/tlb.h> +#include <asm-generic/vmlinux.lds.h> #ifdef CONFIG_PARAVIRT # include <asm/paravirt.h> @@ -1810,7 +1811,7 @@ struct sched_class { #ifdef CONFIG_FAIR_GROUP_SCHED void (*task_change_group)(struct task_struct *p, int type); #endif -} __aligned(32); /* STRUCT_ALIGN(), vmlinux.lds.h */ +} __aligned(STRUCT_ALIGNMENT); /* STRUCT_ALIGN(), vmlinux.lds.h */ static inline void put_prev_task(struct rq *rq, struct task_struct *prev) { |