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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-04 14:42:58 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-04 14:42:58 -0700 |
commit | 3a143125ddc4e2e0ca1e67fb4bedd45c36e59cc7 (patch) | |
tree | 0e5bc6fcc66b4cbfef909646b8a6b8f7f9d08956 /drivers | |
parent | a1aa758d0019f2ac4ea558b3987a07c12fa19f61 (diff) | |
parent | 5761d64b277c287a7520b868c32d656ef03374b4 (diff) | |
download | op-kernel-dev-3a143125ddc4e2e0ca1e67fb4bedd45c36e59cc7.zip op-kernel-dev-3a143125ddc4e2e0ca1e67fb4bedd45c36e59cc7.tar.gz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
x86: revert assign IRQs to hpet timer
x86: tsc prevent time going backwards
xen: Clear PG_pinned in release_{pt,pd}()
xen: Do not pin/unpin PMD pages
xen: refactor xen_{alloc,release}_{pt,pd}()
x86, agpgart: scary messages are fortunately obsolete
xen: fix grant table bug
x86: fix breakage of vSMP irq operations
x86: print message if nmi_watchdog=2 cannot be enabled
x86: fix nmi_watchdog=2 on Pentium-D CPUs
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/char/hpet.c | 51 | ||||
-rw-r--r-- | drivers/xen/grant-table.c | 16 |
2 files changed, 17 insertions, 50 deletions
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index 465ad35..1399971 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -731,14 +731,14 @@ static unsigned long hpet_calibrate(struct hpets *hpetp) int hpet_alloc(struct hpet_data *hdp) { - u64 cap, mcfg, hpet_config; + u64 cap, mcfg; struct hpet_dev *devp; - u32 i, ntimer, irq; + u32 i, ntimer; struct hpets *hpetp; size_t siz; struct hpet __iomem *hpet; static struct hpets *last = NULL; - unsigned long period, irq_bitmap; + unsigned long period; unsigned long long temp; /* @@ -765,47 +765,11 @@ int hpet_alloc(struct hpet_data *hdp) hpetp->hp_hpet_phys = hdp->hd_phys_address; hpetp->hp_ntimer = hdp->hd_nirqs; - hpet = hpetp->hp_hpet; - - /* Assign IRQs statically for legacy devices */ - hpetp->hp_dev[0].hd_hdwirq = hdp->hd_irq[0]; - hpetp->hp_dev[1].hd_hdwirq = hdp->hd_irq[1]; - - /* Assign IRQs dynamically for the others */ - for (i = 2, devp = &hpetp->hp_dev[2]; i < hdp->hd_nirqs; i++, devp++) { - struct hpet_timer __iomem *timer; - timer = &hpet->hpet_timers[devp - hpetp->hp_dev]; + for (i = 0; i < hdp->hd_nirqs; i++) + hpetp->hp_dev[i].hd_hdwirq = hdp->hd_irq[i]; - /* Check if there's already an IRQ assigned to the timer */ - if (hdp->hd_irq[i]) { - hpetp->hp_dev[i].hd_hdwirq = hdp->hd_irq[i]; - continue; - } - - hpet_config = readq(&timer->hpet_config); - irq_bitmap = (hpet_config & Tn_INT_ROUTE_CAP_MASK) - >> Tn_INT_ROUTE_CAP_SHIFT; - if (!irq_bitmap) - irq = 0; /* No valid IRQ Assignable */ - else { - irq = find_first_bit(&irq_bitmap, 32); - do { - hpet_config |= irq << Tn_INT_ROUTE_CNF_SHIFT; - writeq(hpet_config, &timer->hpet_config); - - /* - * Verify whether we have written a valid - * IRQ number by reading it back again - */ - hpet_config = readq(&timer->hpet_config); - if (irq == (hpet_config & Tn_INT_ROUTE_CNF_MASK) - >> Tn_INT_ROUTE_CNF_SHIFT) - break; /* Success */ - } while ((irq = (find_next_bit(&irq_bitmap, 32, irq)))); - } - hpetp->hp_dev[i].hd_hdwirq = irq; - } + hpet = hpetp->hp_hpet; cap = readq(&hpet->hpet_cap); @@ -836,8 +800,7 @@ int hpet_alloc(struct hpet_data *hdp) hpetp->hp_which, hdp->hd_phys_address, hpetp->hp_ntimer > 1 ? "s" : ""); for (i = 0; i < hpetp->hp_ntimer; i++) - printk("%s %d", i > 0 ? "," : "", - hpetp->hp_dev[i].hd_hdwirq); + printk("%s %d", i > 0 ? "," : "", hdp->hd_irq[i]); printk("\n"); printk(KERN_INFO "hpet%u: %u %d-bit timers, %Lu Hz\n", diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index ea94dba..d85dc6d 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -381,11 +381,15 @@ EXPORT_SYMBOL_GPL(gnttab_cancel_free_callback); static int grow_gnttab_list(unsigned int more_frames) { unsigned int new_nr_grant_frames, extra_entries, i; + unsigned int nr_glist_frames, new_nr_glist_frames; new_nr_grant_frames = nr_grant_frames + more_frames; extra_entries = more_frames * GREFS_PER_GRANT_FRAME; - for (i = nr_grant_frames; i < new_nr_grant_frames; i++) { + nr_glist_frames = (nr_grant_frames * GREFS_PER_GRANT_FRAME + RPP - 1) / RPP; + new_nr_glist_frames = + (new_nr_grant_frames * GREFS_PER_GRANT_FRAME + RPP - 1) / RPP; + for (i = nr_glist_frames; i < new_nr_glist_frames; i++) { gnttab_list[i] = (grant_ref_t *)__get_free_page(GFP_ATOMIC); if (!gnttab_list[i]) goto grow_nomem; @@ -407,7 +411,7 @@ static int grow_gnttab_list(unsigned int more_frames) return 0; grow_nomem: - for ( ; i >= nr_grant_frames; i--) + for ( ; i >= nr_glist_frames; i--) free_page((unsigned long) gnttab_list[i]); return -ENOMEM; } @@ -530,7 +534,7 @@ static int gnttab_expand(unsigned int req_entries) static int __devinit gnttab_init(void) { int i; - unsigned int max_nr_glist_frames; + unsigned int max_nr_glist_frames, nr_glist_frames; unsigned int nr_init_grefs; if (!is_running_on_xen()) @@ -543,15 +547,15 @@ static int __devinit gnttab_init(void) * grant reference free list on the current hypervisor. */ max_nr_glist_frames = (boot_max_nr_grant_frames * - GREFS_PER_GRANT_FRAME / - (PAGE_SIZE / sizeof(grant_ref_t))); + GREFS_PER_GRANT_FRAME / RPP); gnttab_list = kmalloc(max_nr_glist_frames * sizeof(grant_ref_t *), GFP_KERNEL); if (gnttab_list == NULL) return -ENOMEM; - for (i = 0; i < nr_grant_frames; i++) { + nr_glist_frames = (nr_grant_frames * GREFS_PER_GRANT_FRAME + RPP - 1) / RPP; + for (i = 0; i < nr_glist_frames; i++) { gnttab_list[i] = (grant_ref_t *)__get_free_page(GFP_KERNEL); if (gnttab_list[i] == NULL) goto ini_nomem; |