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authorarnd@arndb.de <arnd@arndb.de>2006-06-19 14:33:24 -0400
committerPaul Mackerras <paulus@samba.org>2006-06-21 01:01:30 -0400
commit7b1a701480fb17b7f78b95b257bfc90a4f949d04 (patch)
tree658ea67f2b96a174b90a3de52e2251a4471c2dc4 /arch/powerpc/platforms
parent724bd80e8102ac137868b23fad2b06af65f8e168 (diff)
[POWERPC] spufs: add a phys-id attribute to each SPU context
For performance analysis, it is often interesting to know which physical SPE a thread is currently running on, and, more importantly, if it is running at all. This patch adds a simple attribute to each SPU directory with that information. The attribute is read-only and called 'phys-id'. It contains an ascii string with the number of the physical SPU (e.g. "0x5"), or alternatively the string "0xffffffff" (32 bit -1) when it is not running at all at the time that the file is read. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/cell/spufs/file.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 3bc00913fe18..80c02660e617 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -1328,6 +1328,22 @@ static u64 spufs_srr0_get(void *data)
1328DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, 1328DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set,
1329 "%llx\n") 1329 "%llx\n")
1330 1330
1331static u64 spufs_id_get(void *data)
1332{
1333 struct spu_context *ctx = data;
1334 u64 num;
1335
1336 spu_acquire(ctx);
1337 if (ctx->state == SPU_STATE_RUNNABLE)
1338 num = ctx->spu->number;
1339 else
1340 num = (unsigned int)-1;
1341 spu_release(ctx);
1342
1343 return num;
1344}
1345DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, 0, "0x%llx\n")
1346
1331struct tree_descr spufs_dir_contents[] = { 1347struct tree_descr spufs_dir_contents[] = {
1332 { "mem", &spufs_mem_fops, 0666, }, 1348 { "mem", &spufs_mem_fops, 0666, },
1333 { "regs", &spufs_regs_fops, 0666, }, 1349 { "regs", &spufs_regs_fops, 0666, },
@@ -1351,5 +1367,6 @@ struct tree_descr spufs_dir_contents[] = {
1351 { "spu_tag_mask", &spufs_spu_tag_mask_ops, 0666, }, 1367 { "spu_tag_mask", &spufs_spu_tag_mask_ops, 0666, },
1352 { "event_mask", &spufs_event_mask_ops, 0666, }, 1368 { "event_mask", &spufs_event_mask_ops, 0666, },
1353 { "srr0", &spufs_srr0_ops, 0666, }, 1369 { "srr0", &spufs_srr0_ops, 0666, },
1370 { "phys-id", &spufs_id_ops, 0666, },
1354 {}, 1371 {},
1355}; 1372};