diff options
| author | Jack Steiner <steiner@sgi.com> | 2009-06-18 01:28:28 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-18 22:04:03 +0200 |
| commit | d5826dd6002f23940458860701ce22fba9df2614 (patch) | |
| tree | b0220c628cc2606b77fd39c38144c83396b83ca9 /drivers/misc/sgi-gru/grufile.c | |
| parent | gru: fix cache coherency issues with instruction retry (diff) | |
| download | linux-d5826dd6002f23940458860701ce22fba9df2614.tar.xz linux-d5826dd6002f23940458860701ce22fba9df2614.zip | |
gru: add user request to explicitly unload a gru context
Add user function to explicitly unload GRU kernel contexts from the GRU.
Only contexts that are not in-use will be unloaded.
This function is primarily for testing. It is not expected that this will
be used in normal production systems.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/sgi-gru/grufile.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grufile.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c index bfc88d1b2a5b..e22012db239e 100644 --- a/drivers/misc/sgi-gru/grufile.c +++ b/drivers/misc/sgi-gru/grufile.c @@ -287,7 +287,6 @@ static void gru_init_chiplet(struct gru_state *gru, unsigned long paddr, gru_dbg(grudev, "bid %d, nid %d, gid %d, vaddr %p (0x%lx)\n", bid, nid, gru->gs_gid, gru->gs_gru_base_vaddr, gru->gs_gru_base_paddr); - gru_kservices_init(gru); } static int gru_init_tables(unsigned long gru_base_paddr, void *gru_base_vaddr) @@ -314,6 +313,7 @@ static int gru_init_tables(unsigned long gru_base_paddr, void *gru_base_vaddr) memset(gru_base[bid], 0, sizeof(struct gru_blade_state)); gru_base[bid]->bs_lru_gru = &gru_base[bid]->bs_grus[0]; spin_lock_init(&gru_base[bid]->bs_lock); + init_rwsem(&gru_base[bid]->bs_kgts_sema); dsrbytes = 0; cbrs = 0; @@ -426,6 +426,7 @@ static int __init gru_init(void) printk(KERN_ERR "%s: init tables failed\n", GRU_DRIVER_ID_STR); goto exit3; } + gru_kservices_init(); printk(KERN_INFO "%s: v%s\n", GRU_DRIVER_ID_STR, GRU_DRIVER_VERSION_STR); @@ -444,7 +445,7 @@ exit1: static void __exit gru_exit(void) { - int i, bid, gid; + int i, bid; int order = get_order(sizeof(struct gru_state) * GRU_CHIPLETS_PER_BLADE); @@ -453,10 +454,7 @@ static void __exit gru_exit(void) for (i = 0; i < GRU_CHIPLETS_PER_BLADE; i++) free_irq(IRQ_GRU + i, NULL); - - foreach_gid(gid) - gru_kservices_exit(GID_TO_GRU(gid)); - + gru_kservices_exit(); for (bid = 0; bid < GRU_MAX_BLADES; bid++) free_pages((unsigned long)gru_base[bid], order); |