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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-12-10 07:22:40 +0100 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-12-10 07:22:40 +0100 |
| commit | 5d43889c07bb38694742936aa70d1187c012e198 (patch) | |
| tree | 73809dddae39ae3b746396e9779142dbd1973f33 /arch/arc/kernel/ctx_sw.c | |
| parent | Input: ALPS - add support for DualPoint device on Dell XT2 model (diff) | |
| parent | Linux 3.13-rc3 (diff) | |
| download | linux-5d43889c07bb38694742936aa70d1187c012e198.tar.xz linux-5d43889c07bb38694742936aa70d1187c012e198.zip | |
Merge tag 'v3.13-rc3' into for-linus
Merging with the mainline to sync up on changes to serio core.
Diffstat (limited to 'arch/arc/kernel/ctx_sw.c')
| -rw-r--r-- | arch/arc/kernel/ctx_sw.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/arc/kernel/ctx_sw.c b/arch/arc/kernel/ctx_sw.c index 34410eb1a308..c14a5bea0c76 100644 --- a/arch/arc/kernel/ctx_sw.c +++ b/arch/arc/kernel/ctx_sw.c @@ -17,6 +17,8 @@ #include <asm/asm-offsets.h> #include <linux/sched.h> +#define KSP_WORD_OFF ((TASK_THREAD + THREAD_KSP) / 4) + struct task_struct *__sched __switch_to(struct task_struct *prev_task, struct task_struct *next_task) { @@ -45,7 +47,16 @@ __switch_to(struct task_struct *prev_task, struct task_struct *next_task) #endif /* set ksp of outgoing task in tsk->thread.ksp */ +#if KSP_WORD_OFF <= 255 "st.as sp, [%3, %1] \n\t" +#else + /* + * Workaround for NR_CPUS=4k + * %1 is bigger than 255 (S9 offset for st.as) + */ + "add2 r24, %3, %1 \n\t" + "st sp, [r24] \n\t" +#endif "sync \n\t" @@ -97,7 +108,7 @@ __switch_to(struct task_struct *prev_task, struct task_struct *next_task) /* FP/BLINK restore generated by gcc (standard func epilogue */ : "=r"(tmp) - : "n"((TASK_THREAD + THREAD_KSP) / 4), "r"(next), "r"(prev) + : "n"(KSP_WORD_OFF), "r"(next), "r"(prev) : "blink" ); |