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sgi-gru: support multiple pagesizes in GRU

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Add multiple pagesize support to the GRU driver.

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>
This commit is contained in:
Jack Steiner
2009-04-02 16:59:12 -07:00
committed by Linus Torvalds
parent 27ca8a7b2b
commit 7b8274e93f
6 changed files with 35 additions and 38 deletions
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15
drivers/misc/sgi-gru/grufault.c
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@@ -360,6 +360,13 @@ static int gru_try_dropin(struct gru_thread_state *gts,
if (ret == -2)
goto failupm;
if (!(gts->ts_sizeavail & GRU_SIZEAVAIL(pageshift))) {
gts->ts_sizeavail |= GRU_SIZEAVAIL(pageshift);
if (atomic || !gru_update_cch(gts, 0)) {
gts->ts_force_cch_reload = 1;
goto failupm;
}
}
gru_cb_set_istatus_active(cb);
tfh_write_restart(tfh, gpa, GAA_RAM, vaddr, asid, write,
GRU_PAGESIZE(pageshift));
@@ -535,6 +542,14 @@ int gru_handle_user_call_os(unsigned long cb)
gts->ts_force_unload = 1;
}
/*
* CCH may contain stale data if ts_force_cch_reload is set.
*/
if (gts->ts_gru && gts->ts_force_cch_reload) {
gru_update_cch(gts, 0);
gts->ts_force_cch_reload = 0;
}
ret = -EAGAIN;
cbrnum = thread_cbr_number(gts, ucbnum);
if (gts->ts_force_unload) {