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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-01 12:15:15 -0500 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-01 12:15:15 -0500 |
commit | ac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9 (patch) | |
tree | 816e5ac643b15c2050c64a7075f0f7e13d86ea09 /arch/arm/vfp/vfpmodule.c | |
parent | b1bf9368407ae7e89d8a005bb40beb70a41df539 (diff) | |
parent | 9f33be2c3a80bdc2cc08342dd77fac87652e0548 (diff) |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
ARM: Eliminate decompressor -Dstatic= PIC hack
ARM: 5958/1: ARM: U300: fix inverted clk round rate
ARM: 5956/1: misplaced parentheses
ARM: 5955/1: ep93xx: move timer defines into core.c and document
ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
ARM: 5953/1: ep93xx: fix broken build of clock.c
ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
ARM: 5949/1: NUC900 add gpio virtual memory map
ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
ARM: make_coherent(): fix problems with highpte, part 2
MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
ARM: 5945/1: ep93xx: include correct irq.h in core.c
ARM: 5933/1: amba-pl011: support hardware flow control
ARM: 5930/1: Add PKMAP area description to memory.txt.
ARM: 5929/1: Add checks to detect overlap of memory regions.
ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
ARM: 5927/1: Make delimiters of DMA area globally visibly.
ARM: 5926/1: Add "Virtual kernel memory..." printout.
ARM: 5920/1: OMAP4: Enable L2 Cache
...
Fix up trivial conflict in arch/arm/mach-mx25/clock.c
Diffstat (limited to 'arch/arm/vfp/vfpmodule.c')
-rw-r--r-- | arch/arm/vfp/vfpmodule.c | 55 |
1 files changed, 36 insertions, 19 deletions
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index a63c4be99b36..7f3f59fcaa21 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c | |||
@@ -433,7 +433,11 @@ static inline void vfp_pm_init(void) { } | |||
433 | * saved one. This function is used by the ptrace mechanism. | 433 | * saved one. This function is used by the ptrace mechanism. |
434 | */ | 434 | */ |
435 | #ifdef CONFIG_SMP | 435 | #ifdef CONFIG_SMP |
436 | void vfp_sync_state(struct thread_info *thread) | 436 | void vfp_sync_hwstate(struct thread_info *thread) |
437 | { | ||
438 | } | ||
439 | |||
440 | void vfp_flush_hwstate(struct thread_info *thread) | ||
437 | { | 441 | { |
438 | /* | 442 | /* |
439 | * On SMP systems, the VFP state is automatically saved at every | 443 | * On SMP systems, the VFP state is automatically saved at every |
@@ -444,35 +448,48 @@ void vfp_sync_state(struct thread_info *thread) | |||
444 | thread->vfpstate.hard.cpu = NR_CPUS; | 448 | thread->vfpstate.hard.cpu = NR_CPUS; |
445 | } | 449 | } |
446 | #else | 450 | #else |
447 | void vfp_sync_state(struct thread_info *thread) | 451 | void vfp_sync_hwstate(struct thread_info *thread) |
448 | { | 452 | { |
449 | unsigned int cpu = get_cpu(); | 453 | unsigned int cpu = get_cpu(); |
450 | u32 fpexc = fmrx(FPEXC); | ||
451 | 454 | ||
452 | /* | 455 | /* |
453 | * If VFP is enabled, the previous state was already saved and | 456 | * If the thread we're interested in is the current owner of the |
454 | * last_VFP_context updated. | 457 | * hardware VFP state, then we need to save its state. |
455 | */ | 458 | */ |
456 | if (fpexc & FPEXC_EN) | 459 | if (last_VFP_context[cpu] == &thread->vfpstate) { |
457 | goto out; | 460 | u32 fpexc = fmrx(FPEXC); |
458 | 461 | ||
459 | if (!last_VFP_context[cpu]) | 462 | /* |
460 | goto out; | 463 | * Save the last VFP state on this CPU. |
464 | */ | ||
465 | fmxr(FPEXC, fpexc | FPEXC_EN); | ||
466 | vfp_save_state(&thread->vfpstate, fpexc | FPEXC_EN); | ||
467 | fmxr(FPEXC, fpexc); | ||
468 | } | ||
461 | 469 | ||
462 | /* | 470 | put_cpu(); |
463 | * Save the last VFP state on this CPU. | 471 | } |
464 | */ | 472 | |
465 | fmxr(FPEXC, fpexc | FPEXC_EN); | 473 | void vfp_flush_hwstate(struct thread_info *thread) |
466 | vfp_save_state(last_VFP_context[cpu], fpexc); | 474 | { |
467 | fmxr(FPEXC, fpexc); | 475 | unsigned int cpu = get_cpu(); |
468 | 476 | ||
469 | /* | 477 | /* |
470 | * Set the context to NULL to force a reload the next time the thread | 478 | * If the thread we're interested in is the current owner of the |
471 | * uses the VFP. | 479 | * hardware VFP state, then we need to save its state. |
472 | */ | 480 | */ |
473 | last_VFP_context[cpu] = NULL; | 481 | if (last_VFP_context[cpu] == &thread->vfpstate) { |
482 | u32 fpexc = fmrx(FPEXC); | ||
483 | |||
484 | fmxr(FPEXC, fpexc & ~FPEXC_EN); | ||
485 | |||
486 | /* | ||
487 | * Set the context to NULL to force a reload the next time | ||
488 | * the thread uses the VFP. | ||
489 | */ | ||
490 | last_VFP_context[cpu] = NULL; | ||
491 | } | ||
474 | 492 | ||
475 | out: | ||
476 | put_cpu(); | 493 | put_cpu(); |
477 | } | 494 | } |
478 | #endif | 495 | #endif |