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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-03-09 18:05:37 -0500
committerArnd Bergmann <arnd@klappe.arndb.de>2007-03-09 18:07:50 -0500
commit94b2a4393c500a620de90c3266d595926302e26b (patch)
treecde58177f430751b67a7aa47f3f89042e91357bf /include/asm-powerpc
parent50b520d4efbce45281f58112789470ec7965fd33 (diff)
[POWERPC] Fix spu SLB invalidations
The SPU code doesn't properly invalidate SPUs SLBs when necessary, for example when changing a segment size from the hugetlbfs code. In addition, it saves and restores the SLB content on context switches which makes it harder to properly handle those invalidations. This patch removes the saving & restoring for now, something more efficient might be found later on. It also adds a spu_flush_all_slbs(mm) that can be used by the core mm code to flush the SLBs of all SPEs that are running a given mm at the time of the flush. In order to do that, it adds a spinlock to the list of all SPEs and move some bits & pieces from spufs to spu_base.c Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/spu.h7
-rw-r--r--include/asm-powerpc/spu_csa.h4
2 files changed, 7 insertions, 4 deletions
diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 0f9f2dd24a79..31d5054be20f 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -165,6 +165,13 @@ int spu_irq_class_0_bottom(struct spu *spu);
165int spu_irq_class_1_bottom(struct spu *spu); 165int spu_irq_class_1_bottom(struct spu *spu);
166void spu_irq_setaffinity(struct spu *spu, int cpu); 166void spu_irq_setaffinity(struct spu *spu, int cpu);
167 167
168extern void spu_invalidate_slbs(struct spu *spu);
169extern void spu_associate_mm(struct spu *spu, struct mm_struct *mm);
170
171/* Calls from the memory management to the SPU */
172struct mm_struct;
173extern void spu_flush_all_slbs(struct mm_struct *mm);
174
168/* system callbacks from the SPU */ 175/* system callbacks from the SPU */
169struct spu_syscall_block { 176struct spu_syscall_block {
170 u64 nr_ret; 177 u64 nr_ret;
diff --git a/include/asm-powerpc/spu_csa.h b/include/asm-powerpc/spu_csa.h
index bdbf906a767f..8aad0619eb8e 100644
--- a/include/asm-powerpc/spu_csa.h
+++ b/include/asm-powerpc/spu_csa.h
@@ -221,8 +221,6 @@ struct spu_priv2_collapsed {
221 * @spu_chnlcnt_RW: Array of saved channel counts. 221 * @spu_chnlcnt_RW: Array of saved channel counts.
222 * @spu_chnldata_RW: Array of saved channel data. 222 * @spu_chnldata_RW: Array of saved channel data.
223 * @suspend_time: Time stamp when decrementer disabled. 223 * @suspend_time: Time stamp when decrementer disabled.
224 * @slb_esid_RW: Array of saved SLB esid entries.
225 * @slb_vsid_RW: Array of saved SLB vsid entries.
226 * 224 *
227 * Structure representing the whole of the SPU 225 * Structure representing the whole of the SPU
228 * context save area (CSA). This struct contains 226 * context save area (CSA). This struct contains
@@ -245,8 +243,6 @@ struct spu_state {
245 u32 spu_mailbox_data[4]; 243 u32 spu_mailbox_data[4];
246 u32 pu_mailbox_data[1]; 244 u32 pu_mailbox_data[1];
247 unsigned long suspend_time; 245 unsigned long suspend_time;
248 u64 slb_esid_RW[8];
249 u64 slb_vsid_RW[8];
250 spinlock_t register_lock; 246 spinlock_t register_lock;
251}; 247};
252 248