* linux-next: Tree for Oct 9
@ 2013-10-09 14:14 Thierry Reding
2013-10-09 14:14 ` [PATCH] ipv6: Unbreak build Thierry Reding
` (5 more replies)
0 siblings, 6 replies; 23+ messages in thread
From: Thierry Reding @ 2013-10-09 14:14 UTC (permalink / raw)
To: linux-next, linux-kernel; +Cc: Mark Brown
Hi all,
I've uploaded today's linux-next tree to the master branch of the
repository below:
git://gitorious.org/thierryreding/linux-next.git
A next-20131009 tag is also provided for convenience.
Gained a few conflicts, but nothing too exciting. x86, ARM, PowerPC and
MIPS default configurations build fine. There were some build failures
unrelated to the merge, most of which I fixed and added as patches on
top of the final merge.
Thierry
^ permalink raw reply [flat|nested] 23+ messages in thread
* [PATCH] ipv6: Unbreak build
2013-10-09 14:14 linux-next: Tree for Oct 9 Thierry Reding
@ 2013-10-09 14:14 ` Thierry Reding
2013-10-09 14:41 ` Eric Dumazet
2013-10-09 14:14 ` linux-next: manual merge of the clk tree Thierry Reding
` (4 subsequent siblings)
5 siblings, 1 reply; 23+ messages in thread
From: Thierry Reding @ 2013-10-09 14:14 UTC (permalink / raw)
To: David S. Miller, Eric Dumazet; +Cc: linux-next, linux-kernel
IPv6 specific fields in struct sock_common are accessed in various
places even if IPv6 support is disabled. Fix this by including the
fields unconditionally.
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
include/net/sock.h | 2 --
1 file changed, 2 deletions(-)
diff --git a/include/net/sock.h b/include/net/sock.h
index 7e50df5..c87a8a1 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -192,10 +192,8 @@ struct sock_common {
struct net *skc_net;
#endif
-#if IS_ENABLED(CONFIG_IPV6)
struct in6_addr skc_v6_daddr;
struct in6_addr skc_v6_rcv_saddr;
-#endif
/*
* fields between dontcopy_begin/dontcopy_end
--
1.8.4
^ permalink raw reply related [flat|nested] 23+ messages in thread
* Re: [PATCH] ipv6: Unbreak build
2013-10-09 14:14 ` [PATCH] ipv6: Unbreak build Thierry Reding
@ 2013-10-09 14:41 ` Eric Dumazet
2013-10-10 10:48 ` Thierry Reding
0 siblings, 1 reply; 23+ messages in thread
From: Eric Dumazet @ 2013-10-09 14:41 UTC (permalink / raw)
To: Thierry Reding; +Cc: David S. Miller, Eric Dumazet, linux-next, linux-kernel
On Wed, 2013-10-09 at 16:14 +0200, Thierry Reding wrote:
> IPv6 specific fields in struct sock_common are accessed in various
> places even if IPv6 support is disabled. Fix this by including the
> fields unconditionally.
Well no. There is a reason we keep CONFIG_IPV6 at all.
The right fix is under review :
http://patchwork.ozlabs.org/patch/281784/
Thanks
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [PATCH] ipv6: Unbreak build
2013-10-09 14:41 ` Eric Dumazet
@ 2013-10-10 10:48 ` Thierry Reding
0 siblings, 0 replies; 23+ messages in thread
From: Thierry Reding @ 2013-10-10 10:48 UTC (permalink / raw)
To: Eric Dumazet; +Cc: David S. Miller, Eric Dumazet, linux-next, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 765 bytes --]
On Wed, Oct 09, 2013 at 07:41:43AM -0700, Eric Dumazet wrote:
> On Wed, 2013-10-09 at 16:14 +0200, Thierry Reding wrote:
> > IPv6 specific fields in struct sock_common are accessed in various
> > places even if IPv6 support is disabled. Fix this by including the
> > fields unconditionally.
>
> Well no. There is a reason we keep CONFIG_IPV6 at all.
>
> The right fix is under review :
> http://patchwork.ozlabs.org/patch/281784/
Yes that's obviously the better fix. In fact doing exactly that was my
first instinct as well, but it seemed to be more invasive and I really
just wanted a temporary fix for the build errors.
I see that David has already applied the above patch, so this band-aid
should no longer be necessary.
Thanks,
Thierry
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the clk tree
2013-10-09 14:14 linux-next: Tree for Oct 9 Thierry Reding
2013-10-09 14:14 ` [PATCH] ipv6: Unbreak build Thierry Reding
@ 2013-10-09 14:14 ` Thierry Reding
2013-10-09 14:14 ` linux-next: manual merge of the drm-intel tree Thierry Reding
` (3 subsequent siblings)
5 siblings, 0 replies; 23+ messages in thread
From: Thierry Reding @ 2013-10-09 14:14 UTC (permalink / raw)
To: Mike Turquette, Takashi Yoshii, Simon Horman, Santosh Shilimkar, Loc Ho
Cc: linux-next, linux-kernel
Today's linux-next merge of the clk tree got a conflict in
drivers/clk/Makefile
caused by commits f00578d (clk: emev2: Add support for emev2 SMU clocks
with DT), 6cfc229 (clk: keystone: Build Keystone clock drivers) and
308964c (clk: Add APM X-Gene SoC clock driver).
I fixed it up (see below). Please verify that the resolution looks good.
Thanks,
Thierry
---
diff --cc drivers/clk/Makefile
index d25da26,df33820..fe3121b
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@@ -32,7 -32,8 +32,9 @@@ obj-$(CONFIG_ARCH_VT8500) += clk-vt8500
obj-$(CONFIG_ARCH_ZYNQ) += zynq/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_PLAT_SAMSUNG) += samsung/
+obj-$(CONFIG_ARCH_SHMOBILE_MULTI) += shmobile/
+ obj-$(CONFIG_COMMON_CLK_XGENE) += clk-xgene.o
+ obj-$(CONFIG_COMMON_CLK_KEYSTONE) += keystone/
obj-$(CONFIG_X86) += x86/
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the drm-intel tree
2013-10-09 14:14 linux-next: Tree for Oct 9 Thierry Reding
2013-10-09 14:14 ` [PATCH] ipv6: Unbreak build Thierry Reding
2013-10-09 14:14 ` linux-next: manual merge of the clk tree Thierry Reding
@ 2013-10-09 14:14 ` Thierry Reding
2013-10-09 14:14 ` linux-next: manual merge of the imx-mxs tree Thierry Reding
` (2 subsequent siblings)
5 siblings, 0 replies; 23+ messages in thread
From: Thierry Reding @ 2013-10-09 14:14 UTC (permalink / raw)
To: Daniel Vetter, Ville Syrjälä; +Cc: linux-next, linux-kernel
Today's linux-next merge of the drm-intel tree got conflicts in
drivers/gpu/drm/i915/i915_dma.c
drivers/gpu/drm/i915/intel_dp.c
caused by commits 0111be4 (drm: Kill drm perf counter leftovers) and
b14c567 (drm/i915: use pointer = k[cmz...]alloc(sizeof(*pointer), ...)
pattern) as well as commits ba0bf12 (drm: Make vblank_disable_allowed
bool) and ce35255 (drm/i915: Fix unclaimed register access due to
delayed VGA memory disable).
I fixed them up (see below). Please verify that the resolution looks
good.
Thanks,
Thierry
---
diff --cc drivers/gpu/drm/i915/i915_dma.c
index 637b695,ad55c02..3316a6f
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@@ -1330,9 -1333,11 +1333,11 @@@ static int i915_load_modeset_init(struc
/* Always safe in the mode setting case. */
/* FIXME: do pre/post-mode set stuff in core KMS code */
- dev->vblank_disable_allowed = 1;
+ dev->vblank_disable_allowed = true;
- if (INTEL_INFO(dev)->num_pipes == 0)
+ if (INTEL_INFO(dev)->num_pipes == 0) {
+ intel_display_power_put(dev, POWER_DOMAIN_VGA);
return 0;
+ }
ret = intel_fbdev_init(dev);
if (ret)
@@@ -1473,7 -1480,14 +1480,7 @@@ int i915_driver_load(struct drm_device
if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET))
return -ENODEV;
- dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
- /* i915 has 4 more counters */
- dev->counters += 4;
- dev->types[6] = _DRM_STAT_IRQ;
- dev->types[7] = _DRM_STAT_PRIMARY;
- dev->types[8] = _DRM_STAT_SECONDARY;
- dev->types[9] = _DRM_STAT_DMA;
-
+ dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
if (dev_priv == NULL)
return -ENOMEM;
diff --cc drivers/gpu/drm/i915/intel_dp.c
index bfbdbb3,c4c280c..3234552
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@@ -1549,8 -1558,8 +1558,8 @@@ static void intel_edp_psr_setup(struct
intel_edp_psr_write_vsc(intel_dp, &psr_vsc);
/* Avoid continuous PSR exit by masking memup and hpd */
- I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP |
+ I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
- EDP_PSR_DEBUG_MASK_HPD);
+ EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
intel_dp->psr_setup_done = true;
}
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the imx-mxs tree
2013-10-09 14:14 linux-next: Tree for Oct 9 Thierry Reding
` (2 preceding siblings ...)
2013-10-09 14:14 ` linux-next: manual merge of the drm-intel tree Thierry Reding
@ 2013-10-09 14:14 ` Thierry Reding
2013-10-09 16:56 ` Fabio Estevam
2013-10-09 14:14 ` linux-next: manual merge of the mvebu tree Thierry Reding
2013-10-09 15:29 ` linux-next: Tree for Oct 9 Guenter Roeck
5 siblings, 1 reply; 23+ messages in thread
From: Thierry Reding @ 2013-10-09 14:14 UTC (permalink / raw)
To: Shawn Guo, Fabio Estevam, Sebastian Hesselbarth; +Cc: linux-next, linux-kernel
Today's linux-next merge of the imx-mxs tree got conflicts in
arch/arm/mach-imx/clk-imx51-imx53.c
arch/arm/mach-imx/mach-imx6q.c
caused by commits 0efe995 (ARM: mach-imx: clk-imx51-imx53: Retrieve base
address and irq from dt), d2b36f6 (ARM: imx: replace imx6q_restart()
with mxc_restart()) and 4d9d18a (ARM: imx: remove custom .init_time
hook).
I fixed them up (see below). Please verify that the resolution looks
good.
Thanks,
Thierry
---
diff --cc arch/arm/mach-imx/clk-imx51-imx53.c
index ceaac9c,03ca2e3..fa4de9a
--- a/arch/arm/mach-imx/clk-imx51-imx53.c
+++ b/arch/arm/mach-imx/clk-imx51-imx53.c
@@@ -11,9 -11,11 +11,12 @@@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/err.h>
+ #include <linux/of.h>
+ #include <linux/of_address.h>
+ #include <linux/of_irq.h>
#include "crm-regs-imx5.h"
#include "clk.h"
@@@ -464,16 -468,13 +467,17 @@@ int __init mx51_clocks_init(unsigned lo
return 0;
}
-int __init mx53_clocks_init(unsigned long rate_ckil, unsigned long rate_osc,
- unsigned long rate_ckih1, unsigned long rate_ckih2)
+static void __init mx51_clocks_init_dt(struct device_node *np)
+{
+ mx51_clocks_init(0, 0, 0, 0);
+}
+CLK_OF_DECLARE(imx51_ccm, "fsl,imx51-ccm", mx51_clocks_init_dt);
+
+static void __init mx53_clocks_init(struct device_node *np)
{
- int i;
+ int i, irq;
unsigned long r;
- struct device_node *np;
+ void __iomem *base;
clk[pll1_sw] = imx_clk_pllv2("pll1_sw", "osc", MX53_DPLL1_BASE);
clk[pll2_sw] = imx_clk_pllv2("pll2_sw", "osc", MX53_DPLL2_BASE);
@@@ -568,5 -567,22 +569,13 @@@
r = clk_round_rate(clk[usboh3_per_gate], 54000000);
clk_set_rate(clk[usboh3_per_gate], r);
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,imx53-gpt");
+ base = of_iomap(np, 0);
+ WARN_ON(!base);
+ irq = irq_of_parse_and_map(np, 0);
+ mxc_timer_init(base, irq);
+
+ return 0;
}
-
-int __init mx51_clocks_init_dt(void)
-{
- return mx51_clocks_init(0, 0, 0, 0);
-}
-
-int __init mx53_clocks_init_dt(void)
-{
- return mx53_clocks_init(0, 0, 0, 0);
-}
+CLK_OF_DECLARE(imx53_ccm, "fsl,imx53-ccm", mx53_clocks_init);
diff --cc arch/arm/mach-imx/mach-imx6q.c
index 3be0fa0,53e70f4..0f9f241
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@@ -11,9 -11,10 +11,8 @@@
*/
#include <linux/clk.h>
-#include <linux/clk-provider.h>
#include <linux/clkdev.h>
-#include <linux/clocksource.h>
#include <linux/cpu.h>
- #include <linux/delay.h>
#include <linux/export.h>
#include <linux/init.h>
#include <linux/io.h>
@@@ -190,8 -133,13 +131,16 @@@ static void __init imx6q_1588_init(void
static void __init imx6q_init_machine(void)
{
+ struct device *parent;
+
+ imx_print_silicon_rev(cpu_is_imx6dl() ? "i.MX6DL" : "i.MX6Q",
- imx6q_revision());
++ imx_get_soc_revision());
++
+ mxc_arch_reset_init_dt();
+
+ parent = imx_soc_device_init();
+ if (parent == NULL)
+ pr_warn("failed to initialize soc device\n");
imx6q_enet_phy_init();
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: manual merge of the imx-mxs tree
2013-10-09 14:14 ` linux-next: manual merge of the imx-mxs tree Thierry Reding
@ 2013-10-09 16:56 ` Fabio Estevam
0 siblings, 0 replies; 23+ messages in thread
From: Fabio Estevam @ 2013-10-09 16:56 UTC (permalink / raw)
To: Thierry Reding
Cc: Shawn Guo, Fabio Estevam, Sebastian Hesselbarth, linux-next,
linux-kernel
Hi Thierry,
On Wed, Oct 9, 2013 at 11:14 AM, Thierry Reding
<thierry.reding@gmail.com> wrote:
> Today's linux-next merge of the imx-mxs tree got conflicts in
>
> arch/arm/mach-imx/clk-imx51-imx53.c
> arch/arm/mach-imx/mach-imx6q.c
>
> caused by commits 0efe995 (ARM: mach-imx: clk-imx51-imx53: Retrieve base
> address and irq from dt), d2b36f6 (ARM: imx: replace imx6q_restart()
> with mxc_restart()) and 4d9d18a (ARM: imx: remove custom .init_time
> hook).
>
> I fixed them up (see below). Please verify that the resolution looks
> good.
...
> +static void __init mx53_clocks_init(struct device_node *np)
> {
> - int i;
> + int i, irq;
> unsigned long r;
> - struct device_node *np;
> + void __iomem *base;
>
> clk[pll1_sw] = imx_clk_pllv2("pll1_sw", "osc", MX53_DPLL1_BASE);
> clk[pll2_sw] = imx_clk_pllv2("pll2_sw", "osc", MX53_DPLL2_BASE);
> @@@ -568,5 -567,22 +569,13 @@@
>
> r = clk_round_rate(clk[usboh3_per_gate], 54000000);
> clk_set_rate(clk[usboh3_per_gate], r);
> +
> + np = of_find_compatible_node(NULL, NULL, "fsl,imx53-gpt");
> + base = of_iomap(np, 0);
> + WARN_ON(!base);
> + irq = irq_of_parse_and_map(np, 0);
> + mxc_timer_init(base, irq);
> +
> + return 0;
This 'return 0' should be removed as the function now changed to void.
I have sent a patch fixing it.
Regards,
Fabio Estevam
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the mvebu tree
2013-10-09 14:14 linux-next: Tree for Oct 9 Thierry Reding
` (3 preceding siblings ...)
2013-10-09 14:14 ` linux-next: manual merge of the imx-mxs tree Thierry Reding
@ 2013-10-09 14:14 ` Thierry Reding
2013-10-09 14:21 ` Jason Cooper
2013-10-09 14:37 ` Jason Cooper
2013-10-09 15:29 ` linux-next: Tree for Oct 9 Guenter Roeck
5 siblings, 2 replies; 23+ messages in thread
From: Thierry Reding @ 2013-10-09 14:14 UTC (permalink / raw)
To: Jason Cooper, Sebastian Hesselbarth, Ezequiel Garcia
Cc: linux-next, linux-kernel
Today's linux-next merge of the mvebu tree got conflicts in
arch/arm/mach-dove/board-dt.c
arch/arm/mach-kirkwood/board-dt.c
caused by commits ebd7d3a (ARM: kirkwood: retain MAC address for DT
ethernet), 511aaab (ARM: kirkwood: Remove unneeded MBus initialization)
and a169e3a (ARM: kirkwood: remove custom .init_time hook) as well as
ccbd35c (ARM: dove: remove legacy pcie and clock init), e5901b5 (ARM:
dove: switch to DT probed mbus address windows) and 51e40f5 (ARM: dove:
remove custom .init_time hook).
I fixed them up (see below). Please verify that the resolution looks
good.
Thanks,
Thierry
---
diff --cc arch/arm/mach-dove/board-dt.c
index ddb8663,9a116d7..49fa9ab
--- a/arch/arm/mach-dove/board-dt.c
+++ b/arch/arm/mach-dove/board-dt.c
@@@ -17,37 -20,15 +17,8 @@@
#include <mach/dove.h>
#include <mach/pm.h>
#include <plat/common.h>
-#include <plat/irq.h>
#include "common.h"
- /*
- * There are still devices that doesn't even know about DT,
- * get clock gates here and add a clock lookup.
- */
- static void __init dove_legacy_clk_init(void)
- {
- struct device_node *np = of_find_compatible_node(NULL, NULL,
- "marvell,dove-gating-clock");
- struct of_phandle_args clkspec;
-
- clkspec.np = np;
- clkspec.args_count = 1;
-
- clkspec.args[0] = CLOCK_GATING_BIT_PCIE0;
- orion_clkdev_add("0", "pcie",
- of_clk_get_from_provider(&clkspec));
-
- clkspec.args[0] = CLOCK_GATING_BIT_PCIE1;
- orion_clkdev_add("1", "pcie",
- of_clk_get_from_provider(&clkspec));
- }
-
- static void __init dove_dt_init_early(void)
-static void __init dove_dt_time_init(void)
--{
- mvebu_mbus_init("marvell,dove-mbus",
- BRIDGE_WINS_BASE, BRIDGE_WINS_SZ,
- DOVE_MC_WINS_BASE, DOVE_MC_WINS_SZ);
- of_clk_init(NULL);
- clocksource_of_init();
--}
--
static void __init dove_dt_init(void)
{
pr_info("Dove 88AP510 SoC\n");
@@@ -73,7 -47,7 +37,6 @@@ static const char * const dove_dt_board
DT_MACHINE_START(DOVE_DT, "Marvell Dove (Flattened Device Tree)")
.map_io = dove_map_io,
- .init_early = dove_dt_init_early,
- .init_time = dove_dt_time_init,
.init_machine = dove_dt_init,
.restart = dove_restart,
.dt_compat = dove_dt_board_compat,
diff --cc arch/arm/mach-kirkwood/board-dt.c
index a32a3e5,2ac2a3f..9caa4fe
--- a/arch/arm/mach-kirkwood/board-dt.c
+++ b/arch/arm/mach-kirkwood/board-dt.c
@@@ -13,8 -13,11 +13,10 @@@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/of.h>
+ #include <linux/of_address.h>
+ #include <linux/of_net.h>
#include <linux/of_platform.h>
#include <linux/clk-provider.h>
-#include <linux/clocksource.h>
#include <linux/dma-mapping.h>
#include <linux/irqchip.h>
#include <linux/kexec.h>
@@@ -65,13 -60,91 +59,85 @@@ static void __init kirkwood_legacy_clk_
clk_prepare_enable(clk);
}
- static void __init kirkwood_dt_init_early(void)
+ #define MV643XX_ETH_MAC_ADDR_LOW 0x0414
+ #define MV643XX_ETH_MAC_ADDR_HIGH 0x0418
+
+ static void __init kirkwood_dt_eth_fixup(void)
{
- mvebu_mbus_init("marvell,kirkwood-mbus",
- BRIDGE_WINS_BASE, BRIDGE_WINS_SZ,
- DDR_WINDOW_CPU_BASE, DDR_WINDOW_CPU_SZ);
+ struct device_node *np;
+
+ /*
+ * The ethernet interfaces forget the MAC address assigned by u-boot
+ * if the clocks are turned off. Usually, u-boot on kirkwood boards
+ * has no DT support to properly set local-mac-address property.
+ * As a workaround, we get the MAC address from mv643xx_eth registers
+ * and update the port device node if no valid MAC address is set.
+ */
+ for_each_compatible_node(np, NULL, "marvell,kirkwood-eth-port") {
+ struct device_node *pnp = of_get_parent(np);
+ struct clk *clk;
+ struct property *pmac;
+ void __iomem *io;
+ u8 *macaddr;
+ u32 reg;
+
+ if (!pnp)
+ continue;
+
+ /* skip disabled nodes or nodes with valid MAC address*/
+ if (!of_device_is_available(pnp) || of_get_mac_address(np))
+ goto eth_fixup_skip;
+
+ clk = of_clk_get(pnp, 0);
+ if (IS_ERR(clk))
+ goto eth_fixup_skip;
+
+ io = of_iomap(pnp, 0);
+ if (!io)
+ goto eth_fixup_no_map;
+
+ /* ensure port clock is not gated to not hang CPU */
+ clk_prepare_enable(clk);
+
+ /* store MAC address register contents in local-mac-address */
+ pr_err(FW_INFO "%s: local-mac-address is not set\n",
+ np->full_name);
+
+ pmac = kzalloc(sizeof(*pmac) + 6, GFP_KERNEL);
+ if (!pmac)
+ goto eth_fixup_no_mem;
+
+ pmac->value = pmac + 1;
+ pmac->length = 6;
+ pmac->name = kstrdup("local-mac-address", GFP_KERNEL);
+ if (!pmac->name) {
+ kfree(pmac);
+ goto eth_fixup_no_mem;
+ }
+
+ macaddr = pmac->value;
+ reg = readl(io + MV643XX_ETH_MAC_ADDR_HIGH);
+ macaddr[0] = (reg >> 24) & 0xff;
+ macaddr[1] = (reg >> 16) & 0xff;
+ macaddr[2] = (reg >> 8) & 0xff;
+ macaddr[3] = reg & 0xff;
+
+ reg = readl(io + MV643XX_ETH_MAC_ADDR_LOW);
+ macaddr[4] = (reg >> 8) & 0xff;
+ macaddr[5] = reg & 0xff;
+
+ of_update_property(np, pmac);
+
+ eth_fixup_no_mem:
+ iounmap(io);
+ clk_disable_unprepare(clk);
+ eth_fixup_no_map:
+ clk_put(clk);
+ eth_fixup_skip:
+ of_node_put(pnp);
+ }
}
-static void __init kirkwood_dt_time_init(void)
-{
- of_clk_init(NULL);
- clocksource_of_init();
-}
-
static void __init kirkwood_dt_init(void)
{
pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk);
@@@ -114,7 -187,7 +180,6 @@@ static const char * const kirkwood_dt_b
DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
/* Maintainer: Jason Cooper <jason@lakedaemon.net> */
.map_io = kirkwood_map_io,
- .init_early = kirkwood_dt_init_early,
- .init_time = kirkwood_dt_time_init,
.init_machine = kirkwood_dt_init,
.restart = kirkwood_restart,
.dt_compat = kirkwood_dt_board_compat,
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: manual merge of the mvebu tree
2013-10-09 14:14 ` linux-next: manual merge of the mvebu tree Thierry Reding
@ 2013-10-09 14:21 ` Jason Cooper
2013-10-09 14:37 ` Jason Cooper
1 sibling, 0 replies; 23+ messages in thread
From: Jason Cooper @ 2013-10-09 14:21 UTC (permalink / raw)
To: Thierry Reding
Cc: Sebastian Hesselbarth, Ezequiel Garcia, linux-next, linux-kernel
On Wed, Oct 09, 2013 at 04:14:27PM +0200, Thierry Reding wrote:
> Today's linux-next merge of the mvebu tree got conflicts in
>
> arch/arm/mach-dove/board-dt.c
> arch/arm/mach-kirkwood/board-dt.c
>
> caused by commits ebd7d3a (ARM: kirkwood: retain MAC address for DT
> ethernet), 511aaab (ARM: kirkwood: Remove unneeded MBus initialization)
> and a169e3a (ARM: kirkwood: remove custom .init_time hook) as well as
> ccbd35c (ARM: dove: remove legacy pcie and clock init), e5901b5 (ARM:
> dove: switch to DT probed mbus address windows) and 51e40f5 (ARM: dove:
> remove custom .init_time hook).
>
> I fixed them up (see below). Please verify that the resolution looks
> good.
Looks good to me, thanks for picking up the linux-next duties, it's a
big help.
thx,
Jason.
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: manual merge of the mvebu tree
2013-10-09 14:14 ` linux-next: manual merge of the mvebu tree Thierry Reding
2013-10-09 14:21 ` Jason Cooper
@ 2013-10-09 14:37 ` Jason Cooper
2013-10-10 10:57 ` Thierry Reding
1 sibling, 1 reply; 23+ messages in thread
From: Jason Cooper @ 2013-10-09 14:37 UTC (permalink / raw)
To: Thierry Reding
Cc: Sebastian Hesselbarth, Ezequiel Garcia, linux-next, linux-kernel
Thierry,
On Wed, Oct 09, 2013 at 04:14:27PM +0200, Thierry Reding wrote:
> Today's linux-next merge of the mvebu tree got conflicts in
I looked in your scripts repo, and couldn't find the script you use to
send out this email thread :( Since I can't create a patch, I'll just
ask, could you include the commit id of the branch you pulled in the
email?
eg:
Today's linux-next merge of the mvebu tree (477cdaf) got conflicts in
...
I had uploaded a new for-next branch less than 30 minutes before you
sent this out, so I wasn't sure which you were working with. Not a big
deal, just thought I'd pass along the idea for the next time you're
tweaking your scripts.
thx,
Jason.
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: manual merge of the mvebu tree
2013-10-09 14:37 ` Jason Cooper
@ 2013-10-10 10:57 ` Thierry Reding
2013-10-10 11:40 ` Jason Cooper
0 siblings, 1 reply; 23+ messages in thread
From: Thierry Reding @ 2013-10-10 10:57 UTC (permalink / raw)
To: Jason Cooper
Cc: Sebastian Hesselbarth, Ezequiel Garcia, linux-next, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1228 bytes --]
On Wed, Oct 09, 2013 at 10:37:27AM -0400, Jason Cooper wrote:
> Thierry,
>
> On Wed, Oct 09, 2013 at 04:14:27PM +0200, Thierry Reding wrote:
> > Today's linux-next merge of the mvebu tree got conflicts in
>
> I looked in your scripts repo, and couldn't find the script you use to
> send out this email thread :(
Well, that's because I'm doing them manually.
> Since I can't create a patch, I'll just ask, could you include the
> commit id of the branch you pulled in the email?
>
> eg:
>
> Today's linux-next merge of the mvebu tree (477cdaf) got conflicts in
> ...
>
> I had uploaded a new for-next branch less than 30 minutes before you
> sent this out, so I wasn't sure which you were working with. Not a big
> deal, just thought I'd pass along the idea for the next time you're
> tweaking your scripts.
It should be possible to extend the Next/fetch script with something
that writes the SHA1 of each tree to a file. Stephen's linux-next trees
contain such a file (Next/SHA1s). I'll see if I can find the time to
update my scripts to do the same. That won't make it magically appear in
the notification email, but I can probably remember to do that in the
future.
Thanks,
Thierry
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: manual merge of the mvebu tree
2013-10-10 10:57 ` Thierry Reding
@ 2013-10-10 11:40 ` Jason Cooper
0 siblings, 0 replies; 23+ messages in thread
From: Jason Cooper @ 2013-10-10 11:40 UTC (permalink / raw)
To: Thierry Reding
Cc: Sebastian Hesselbarth, Ezequiel Garcia, linux-next, linux-kernel
On Thu, Oct 10, 2013 at 12:57:03PM +0200, Thierry Reding wrote:
> On Wed, Oct 09, 2013 at 10:37:27AM -0400, Jason Cooper wrote:
> > Thierry,
> >
> > On Wed, Oct 09, 2013 at 04:14:27PM +0200, Thierry Reding wrote:
> > > Today's linux-next merge of the mvebu tree got conflicts in
> >
> > I looked in your scripts repo, and couldn't find the script you use to
> > send out this email thread :(
>
> Well, that's because I'm doing them manually.
:) Nice. I do like the threading, it provides a nice consolidated
summary of the day's tree.
> > Since I can't create a patch, I'll just ask, could you include the
> > commit id of the branch you pulled in the email?
> >
> > eg:
> >
> > Today's linux-next merge of the mvebu tree (477cdaf) got conflicts in
> > ...
> >
> > I had uploaded a new for-next branch less than 30 minutes before you
> > sent this out, so I wasn't sure which you were working with. Not a big
> > deal, just thought I'd pass along the idea for the next time you're
> > tweaking your scripts.
>
> It should be possible to extend the Next/fetch script with something
> that writes the SHA1 of each tree to a file. Stephen's linux-next trees
> contain such a file (Next/SHA1s). I'll see if I can find the time to
> update my scripts to do the same. That won't make it magically appear in
> the notification email, but I can probably remember to do that in the
> future.
No, not necessary. I don't want to add unnecessary work to your plate.
If the script modification put it in the email notification
automagically, it might be worth doing, but if a tree owner is already
looking at your -next tree, it's trivial to go one step further and look
at the merge commit (which is what I did in this case).
thanks, and sorry for the noise.
Jason.
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: Tree for Oct 9
2013-10-09 14:14 linux-next: Tree for Oct 9 Thierry Reding
` (4 preceding siblings ...)
2013-10-09 14:14 ` linux-next: manual merge of the mvebu tree Thierry Reding
@ 2013-10-09 15:29 ` Guenter Roeck
2013-10-09 15:44 ` Guenter Roeck
5 siblings, 1 reply; 23+ messages in thread
From: Guenter Roeck @ 2013-10-09 15:29 UTC (permalink / raw)
To: Thierry Reding; +Cc: linux-next, linux-kernel, Mark Brown
On Wed, Oct 09, 2013 at 04:14:22PM +0200, Thierry Reding wrote:
> Hi all,
>
> I've uploaded today's linux-next tree to the master branch of the
> repository below:
>
> git://gitorious.org/thierryreding/linux-next.git
>
> A next-20131009 tag is also provided for convenience.
>
> Gained a few conflicts, but nothing too exciting. x86, ARM, PowerPC and
> MIPS default configurations build fine. There were some build failures
> unrelated to the merge, most of which I fixed and added as patches on
> top of the final merge.
>
Build results:
total: 110 pass: 93 skipped: 4 fail: 13
[3.12-rc4: total: 110 pass: 105 skipped: 3 fail: 2]
Failed builds:
alpha:allmodconfig
arm:allmodconfig
blackfin:defconfig
i386:allyesconfig
i386:allmodconfig
m68k:allmodconfig
mips:allmodconfig
mips:nlm_xlp_defconfig
powerpc:allmodconfig
sparc64:allmodconfig
x86_64:allmodconfig
x86_64:allyesconfig
xtensa:allmodconfig
Many of the failures are due to ceph:
fs/ceph/file.c: In function 'ceph_sync_read':
fs/ceph/file.c:437:25: error: 'struct iov_iter' has no member named 'iov'
...
Guenter
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: Tree for Oct 9
2013-10-09 15:29 ` linux-next: Tree for Oct 9 Guenter Roeck
@ 2013-10-09 15:44 ` Guenter Roeck
2013-10-09 17:55 ` Guenter Roeck
0 siblings, 1 reply; 23+ messages in thread
From: Guenter Roeck @ 2013-10-09 15:44 UTC (permalink / raw)
To: Thierry Reding; +Cc: linux-next, linux-kernel, Mark Brown
On Wed, Oct 09, 2013 at 08:29:06AM -0700, Guenter Roeck wrote:
> On Wed, Oct 09, 2013 at 04:14:22PM +0200, Thierry Reding wrote:
> > Hi all,
> >
> > I've uploaded today's linux-next tree to the master branch of the
> > repository below:
> >
> > git://gitorious.org/thierryreding/linux-next.git
> >
> > A next-20131009 tag is also provided for convenience.
> >
> > Gained a few conflicts, but nothing too exciting. x86, ARM, PowerPC and
> > MIPS default configurations build fine. There were some build failures
> > unrelated to the merge, most of which I fixed and added as patches on
> > top of the final merge.
> >
> Build results:
> total: 110 pass: 93 skipped: 4 fail: 13
> [3.12-rc4: total: 110 pass: 105 skipped: 3 fail: 2]
>
> Failed builds:
> alpha:allmodconfig
> arm:allmodconfig
> blackfin:defconfig
> i386:allyesconfig
> i386:allmodconfig
> m68k:allmodconfig
> mips:allmodconfig
> mips:nlm_xlp_defconfig
> powerpc:allmodconfig
> sparc64:allmodconfig
> x86_64:allmodconfig
> x86_64:allyesconfig
> xtensa:allmodconfig
>
> Many of the failures are due to ceph:
>
> fs/ceph/file.c: In function 'ceph_sync_read':
> fs/ceph/file.c:437:25: error: 'struct iov_iter' has no member named 'iov'
> ...
>
Sorry, that was the result for yesterday's tree. I should have results for the
October 9 tree in a couple of hours.
Guenter
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: Tree for Oct 9
2013-10-09 15:44 ` Guenter Roeck
@ 2013-10-09 17:55 ` Guenter Roeck
0 siblings, 0 replies; 23+ messages in thread
From: Guenter Roeck @ 2013-10-09 17:55 UTC (permalink / raw)
To: Thierry Reding; +Cc: linux-next, linux-kernel, Mark Brown
On Wed, Oct 09, 2013 at 08:44:24AM -0700, Guenter Roeck wrote:
> On Wed, Oct 09, 2013 at 08:29:06AM -0700, Guenter Roeck wrote:
> > On Wed, Oct 09, 2013 at 04:14:22PM +0200, Thierry Reding wrote:
> > > Hi all,
> > >
> > > I've uploaded today's linux-next tree to the master branch of the
> > > repository below:
> > >
> > > git://gitorious.org/thierryreding/linux-next.git
> > >
> > > A next-20131009 tag is also provided for convenience.
> > >
> > > Gained a few conflicts, but nothing too exciting. x86, ARM, PowerPC and
> > > MIPS default configurations build fine. There were some build failures
> > > unrelated to the merge, most of which I fixed and added as patches on
> > > top of the final merge.
> > >
> > Build results:
> > total: 110 pass: 93 skipped: 4 fail: 13
> > [3.12-rc4: total: 110 pass: 105 skipped: 3 fail: 2]
> >
> > Failed builds:
> > alpha:allmodconfig
> > arm:allmodconfig
> > blackfin:defconfig
> > i386:allyesconfig
> > i386:allmodconfig
> > m68k:allmodconfig
> > mips:allmodconfig
> > mips:nlm_xlp_defconfig
> > powerpc:allmodconfig
> > sparc64:allmodconfig
> > x86_64:allmodconfig
> > x86_64:allyesconfig
> > xtensa:allmodconfig
> >
> > Many of the failures are due to ceph:
> >
> > fs/ceph/file.c: In function 'ceph_sync_read':
> > fs/ceph/file.c:437:25: error: 'struct iov_iter' has no member named 'iov'
> > ...
> >
> Sorry, that was the result for yesterday's tree. I should have results for the
> October 9 tree in a couple of hours.
>
October 9 results are exactly the same.
Guenter
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: Tree for Oct 14
@ 2013-10-14 14:48 Thierry Reding
2013-10-14 14:48 ` linux-next: manual merge of the drm-intel tree Thierry Reding
0 siblings, 1 reply; 23+ messages in thread
From: Thierry Reding @ 2013-10-14 14:48 UTC (permalink / raw)
To: linux-next, linux-kernel; +Cc: Mark Brown
Hi all,
I've uploaded today's linux-next tree to the master branch of the
repository below:
git://gitorious.org/thierryreding/linux-next.git
A next-20131014 tag is also provided for convenience.
Gained a few conflicts, but nothing too exciting. x86 and ARM default
configurations build fine. There were some build failures unrelated to
the merge, most of which I fixed and added as patches on top of the
final merge.
Thierry
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the drm-intel tree
2013-10-14 14:48 linux-next: Tree for Oct 14 Thierry Reding
@ 2013-10-14 14:48 ` Thierry Reding
0 siblings, 0 replies; 23+ messages in thread
From: Thierry Reding @ 2013-10-14 14:48 UTC (permalink / raw)
To: Daniel Vetter, intel-gfx, dri-devel, Ville Syrjälä
Cc: linux-next, linux-kernel
Today's linux-next merge of the drm-intel tree got conflicts in:
drivers/gpu/drm/i915/i915_dma.c
drivers/gpu/drm/i915/intel_dp.c
drivers/gpu/drm/i915/intel_drv.h
caused by commits e1264eb (Revert "drm/i915: Delay disabling of VGA memory
until vgacon->fbcon handoff is done") and ce35255 (drm/i915: Fix unclaimed
register access due to delayed VGA memory disable).
I fixed them up (see below). Please verify that the resolution looks good.
Thanks,
Thierry
---
diff --cc drivers/gpu/drm/i915/i915_dma.c
index 24640dc,42cddc1..f240150
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@@ -1350,6 -1358,13 +1355,8 @@@ static int i915_load_modeset_init(struc
*/
intel_fbdev_initial_config(dev);
- /*
- * Must do this after fbcon init so that
- * vgacon_save_screen() works during the handover.
- */
- i915_disable_vga_mem(dev);
+ intel_display_power_put(dev, POWER_DOMAIN_VGA);
+
/* Only enable hotplug handling once the fbdev is fully set up. */
dev_priv->enable_hotplug_processing = true;
diff --cc drivers/gpu/drm/i915/intel_display.c
index 1fdf49c,4a8a2e4..fbd028e
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@@ -10237,8 -10388,37 +10384,10 @@@ static void i915_disable_vga(struct drm
POSTING_READ(vga_reg);
}
-static void i915_enable_vga_mem(struct drm_device *dev)
-{
- /* Enable VGA memory on Intel HD */
- if (HAS_PCH_SPLIT(dev)) {
- vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
- outb(inb(VGA_MSR_READ) | VGA_MSR_MEM_EN, VGA_MSR_WRITE);
- vga_set_legacy_decoding(dev->pdev, VGA_RSRC_LEGACY_IO |
- VGA_RSRC_LEGACY_MEM |
- VGA_RSRC_NORMAL_IO |
- VGA_RSRC_NORMAL_MEM);
- vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
- }
-}
-
-void i915_disable_vga_mem(struct drm_device *dev)
-{
- /* Disable VGA memory on Intel HD */
- if (HAS_PCH_SPLIT(dev)) {
- vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
- outb(inb(VGA_MSR_READ) & ~VGA_MSR_MEM_EN, VGA_MSR_WRITE);
- vga_set_legacy_decoding(dev->pdev, VGA_RSRC_LEGACY_IO |
- VGA_RSRC_NORMAL_IO |
- VGA_RSRC_NORMAL_MEM);
- vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
- }
-}
-
void intel_modeset_init_hw(struct drm_device *dev)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
intel_prepare_ddi(dev);
intel_init_clock_gating(dev);
@@@ -10510,9 -10697,10 +10666,9 @@@ void i915_redisable_vga(struct drm_devi
(I915_READ(HSW_PWR_WELL_DRIVER) & HSW_PWR_WELL_STATE_ENABLED) == 0)
return;
- if (I915_READ(vga_reg) != VGA_DISP_DISABLE) {
+ if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
i915_disable_vga(dev);
- i915_disable_vga_mem(dev);
}
}
diff --cc drivers/gpu/drm/i915/intel_dp.c
index 98f3b64,bee09e1..c392ad2
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@@ -1532,8 -1541,8 +1541,8 @@@ static void intel_edp_psr_setup(struct
intel_edp_psr_write_vsc(intel_dp, &psr_vsc);
/* Avoid continuous PSR exit by masking memup and hpd */
- I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP |
+ I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
- EDP_PSR_DEBUG_MASK_HPD);
+ EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
intel_dp->psr_setup_done = true;
}
diff --cc drivers/gpu/drm/i915/intel_drv.h
index 39bfdb3,189257d..343f0fa
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@@ -714,116 -656,196 +656,197 @@@ void assert_fdi_rx_pll(struct drm_i915_
enum pipe pipe, bool state);
#define assert_fdi_rx_pll_enabled(d, p) assert_fdi_rx_pll(d, p, true)
#define assert_fdi_rx_pll_disabled(d, p) assert_fdi_rx_pll(d, p, false)
- extern void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
- bool state);
+ void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, bool state);
#define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
#define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
+ void intel_write_eld(struct drm_encoder *encoder,
+ struct drm_display_mode *mode);
+ unsigned long intel_gen4_compute_page_offset(int *x, int *y,
+ unsigned int tiling_mode,
+ unsigned int bpp,
+ unsigned int pitch);
+ void intel_display_handle_reset(struct drm_device *dev);
+ void hsw_enable_pc8_work(struct work_struct *__work);
+ void hsw_enable_package_c8(struct drm_i915_private *dev_priv);
+ void hsw_disable_package_c8(struct drm_i915_private *dev_priv);
+ void intel_dp_get_m_n(struct intel_crtc *crtc,
+ struct intel_crtc_config *pipe_config);
+ int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
+ void
+ ironlake_check_encoder_dotclock(const struct intel_crtc_config *pipe_config,
+ int dotclock);
+ bool intel_crtc_active(struct drm_crtc *crtc);
+ void i915_disable_vga_mem(struct drm_device *dev);
+ void hsw_enable_ips(struct intel_crtc *crtc);
+ void hsw_disable_ips(struct intel_crtc *crtc);
+
+
+ /* intel_dp.c */
+ void intel_dp_init(struct drm_device *dev, int output_reg, enum port port);
+ bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
+ struct intel_connector *intel_connector);
+ void intel_dp_start_link_train(struct intel_dp *intel_dp);
+ void intel_dp_complete_link_train(struct intel_dp *intel_dp);
+ void intel_dp_stop_link_train(struct intel_dp *intel_dp);
+ void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
+ void intel_dp_encoder_destroy(struct drm_encoder *encoder);
+ void intel_dp_check_link_status(struct intel_dp *intel_dp);
+ bool intel_dp_compute_config(struct intel_encoder *encoder,
+ struct intel_crtc_config *pipe_config);
+ bool intel_dpd_is_edp(struct drm_device *dev);
+ void ironlake_edp_backlight_on(struct intel_dp *intel_dp);
+ void ironlake_edp_backlight_off(struct intel_dp *intel_dp);
+ void ironlake_edp_panel_on(struct intel_dp *intel_dp);
+ void ironlake_edp_panel_off(struct intel_dp *intel_dp);
+ void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp);
+ void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync);
+ void intel_edp_psr_enable(struct intel_dp *intel_dp);
+ void intel_edp_psr_disable(struct intel_dp *intel_dp);
+ void intel_edp_psr_update(struct drm_device *dev);
+
+
+ /* intel_dsi.c */
+ bool intel_dsi_init(struct drm_device *dev);
+
- extern void intel_init_clock_gating(struct drm_device *dev);
- extern void intel_suspend_hw(struct drm_device *dev);
- extern void intel_write_eld(struct drm_encoder *encoder,
- struct drm_display_mode *mode);
- extern void intel_prepare_ddi(struct drm_device *dev);
- extern void hsw_fdi_link_train(struct drm_crtc *crtc);
- extern void intel_ddi_init(struct drm_device *dev, enum port port);
- extern enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
-
- /* For use by IVB LP watermark workaround in intel_sprite.c */
- extern void intel_update_watermarks(struct drm_crtc *crtc);
- extern void intel_update_sprite_watermarks(struct drm_plane *plane,
- struct drm_crtc *crtc,
- uint32_t sprite_width, int pixel_size,
- bool enabled, bool scaled);
-
- extern unsigned long intel_gen4_compute_page_offset(int *x, int *y,
- unsigned int tiling_mode,
- unsigned int bpp,
- unsigned int pitch);
-
- extern int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
- extern int intel_sprite_get_colorkey(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-
- /* Power-related functions, located in intel_pm.c */
- extern void intel_init_pm(struct drm_device *dev);
- /* FBC */
- extern bool intel_fbc_enabled(struct drm_device *dev);
- extern void intel_update_fbc(struct drm_device *dev);
- /* IPS */
- extern void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
- extern void intel_gpu_ips_teardown(void);
-
- /* Power well */
- extern int i915_init_power_well(struct drm_device *dev);
- extern void i915_remove_power_well(struct drm_device *dev);
-
- extern bool intel_display_power_enabled(struct drm_device *dev,
- enum intel_display_power_domain domain);
- extern void intel_display_power_get(struct drm_device *dev,
- enum intel_display_power_domain domain);
- extern void intel_display_power_put(struct drm_device *dev,
- enum intel_display_power_domain domain);
- extern void intel_init_power_well(struct drm_device *dev);
- extern void intel_set_power_well(struct drm_device *dev, bool enable);
- extern void intel_resume_power_well(struct drm_device *dev);
- extern void intel_enable_gt_powersave(struct drm_device *dev);
- extern void intel_disable_gt_powersave(struct drm_device *dev);
- extern void ironlake_teardown_rc6(struct drm_device *dev);
+ /* intel_dvo.c */
+ void intel_dvo_init(struct drm_device *dev);
+
+
+ /* legacy fbdev emulation in intel_fbdev.c */
+ #ifdef CONFIG_DRM_I915_FBDEV
+ extern int intel_fbdev_init(struct drm_device *dev);
+ extern void intel_fbdev_initial_config(struct drm_device *dev);
+ extern void intel_fbdev_fini(struct drm_device *dev);
+ extern void intel_fbdev_set_suspend(struct drm_device *dev, int state);
+ extern void intel_fbdev_output_poll_changed(struct drm_device *dev);
+ extern void intel_fbdev_restore_mode(struct drm_device *dev);
+ #else
+ static inline int intel_fbdev_init(struct drm_device *dev)
+ {
+ return 0;
+ }
+
+ static inline void intel_fbdev_initial_config(struct drm_device *dev)
+ {
+ }
+
+ static inline void intel_fbdev_fini(struct drm_device *dev)
+ {
+ }
+
+ static inline void intel_fbdev_set_suspend(struct drm_device *dev, int state)
+ {
+ }
+
+ static inline void intel_fbdev_restore_mode(struct drm_device *dev)
+ {
+ }
+ #endif
+
+ /* intel_hdmi.c */
+ void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port);
+ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
+ struct intel_connector *intel_connector);
+ struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
+ bool intel_hdmi_compute_config(struct intel_encoder *encoder,
+ struct intel_crtc_config *pipe_config);
+
+
+ /* intel_lvds.c */
+ void intel_lvds_init(struct drm_device *dev);
+ bool intel_is_dual_link_lvds(struct drm_device *dev);
+
+
+ /* intel_modes.c */
+ int intel_connector_update_modes(struct drm_connector *connector,
+ struct edid *edid);
+ int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
+ void intel_attach_force_audio_property(struct drm_connector *connector);
+ void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
+
+
+ /* intel_overlay.c */
+ void intel_setup_overlay(struct drm_device *dev);
+ void intel_cleanup_overlay(struct drm_device *dev);
+ int intel_overlay_switch_off(struct intel_overlay *overlay);
+ int intel_overlay_put_image(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+ int intel_overlay_attrs(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+
+
+ /* intel_panel.c */
+ int intel_panel_init(struct intel_panel *panel,
+ struct drm_display_mode *fixed_mode);
+ void intel_panel_fini(struct intel_panel *panel);
+ void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
+ struct drm_display_mode *adjusted_mode);
+ void intel_pch_panel_fitting(struct intel_crtc *crtc,
+ struct intel_crtc_config *pipe_config,
+ int fitting_mode);
+ void intel_gmch_panel_fitting(struct intel_crtc *crtc,
+ struct intel_crtc_config *pipe_config,
+ int fitting_mode);
+ void intel_panel_set_backlight(struct drm_device *dev, u32 level, u32 max);
+ int intel_panel_setup_backlight(struct drm_connector *connector);
+ void intel_panel_enable_backlight(struct drm_device *dev, enum pipe pipe);
+ void intel_panel_disable_backlight(struct drm_device *dev);
+ void intel_panel_destroy_backlight(struct drm_device *dev);
+ enum drm_connector_status intel_panel_detect(struct drm_device *dev);
+
+
+ /* intel_pm.c */
+ void intel_init_clock_gating(struct drm_device *dev);
+ void intel_suspend_hw(struct drm_device *dev);
+ void intel_update_watermarks(struct drm_crtc *crtc);
+ void intel_update_sprite_watermarks(struct drm_plane *plane,
+ struct drm_crtc *crtc,
+ uint32_t sprite_width, int pixel_size,
+ bool enabled, bool scaled);
+ void intel_init_pm(struct drm_device *dev);
+ bool intel_fbc_enabled(struct drm_device *dev);
+ void intel_update_fbc(struct drm_device *dev);
+ void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
+ void intel_gpu_ips_teardown(void);
+ int i915_init_power_well(struct drm_device *dev);
+ void i915_remove_power_well(struct drm_device *dev);
+ bool intel_display_power_enabled(struct drm_device *dev,
+ enum intel_display_power_domain domain);
+ void intel_display_power_get(struct drm_device *dev,
+ enum intel_display_power_domain domain);
+ void intel_display_power_put(struct drm_device *dev,
+ enum intel_display_power_domain domain);
+ void intel_init_power_well(struct drm_device *dev);
+ void intel_set_power_well(struct drm_device *dev, bool enable);
+ void intel_enable_gt_powersave(struct drm_device *dev);
+ void intel_disable_gt_powersave(struct drm_device *dev);
+ void ironlake_teardown_rc6(struct drm_device *dev);
void gen6_update_ring_freq(struct drm_device *dev);
+ void gen6_rps_idle(struct drm_i915_private *dev_priv);
+ void gen6_rps_boost(struct drm_i915_private *dev_priv);
+ void intel_aux_display_runtime_get(struct drm_i915_private *dev_priv);
+ void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv);
- extern bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
- enum pipe *pipe);
- extern int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv);
- extern void intel_ddi_pll_init(struct drm_device *dev);
- extern void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
- extern void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
- enum transcoder cpu_transcoder);
- extern void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
- extern void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
- extern void intel_ddi_setup_hw_pll_state(struct drm_device *dev);
- extern bool intel_ddi_pll_mode_set(struct drm_crtc *crtc);
- extern void intel_ddi_put_crtc_pll(struct drm_crtc *crtc);
- extern void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
- extern void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder);
- extern bool
- intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
- extern void intel_ddi_fdi_disable(struct drm_crtc *crtc);
-
- extern void intel_display_handle_reset(struct drm_device *dev);
- extern bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
- enum pipe pipe,
- bool enable);
- extern bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev,
- enum transcoder pch_transcoder,
- bool enable);
-
- extern void intel_edp_psr_enable(struct intel_dp *intel_dp);
- extern void intel_edp_psr_disable(struct intel_dp *intel_dp);
- extern void intel_edp_psr_update(struct drm_device *dev);
- extern void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
- bool switch_to_fclk, bool allow_power_down);
- extern void hsw_restore_lcpll(struct drm_i915_private *dev_priv);
- extern void ilk_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
- extern void ilk_disable_gt_irq(struct drm_i915_private *dev_priv,
- uint32_t mask);
- extern void snb_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
- extern void snb_disable_pm_irq(struct drm_i915_private *dev_priv,
- uint32_t mask);
- extern void hsw_enable_pc8_work(struct work_struct *__work);
- extern void hsw_enable_package_c8(struct drm_i915_private *dev_priv);
- extern void hsw_disable_package_c8(struct drm_i915_private *dev_priv);
- extern void hsw_pc8_disable_interrupts(struct drm_device *dev);
- extern void hsw_pc8_restore_interrupts(struct drm_device *dev);
- extern void intel_aux_display_runtime_get(struct drm_i915_private *dev_priv);
- extern void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv);
- extern void intel_dp_get_m_n(struct intel_crtc *crtc,
- struct intel_crtc_config *pipe_config);
- extern int intel_dotclock_calculate(int link_freq,
- const struct intel_link_m_n *m_n);
- extern void ironlake_check_encoder_dotclock(const struct intel_crtc_config *pipe_config,
- int dotclock);
- extern bool intel_crtc_active(struct drm_crtc *crtc);
+ /* intel_sdvo.c */
+ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob);
+
+
+ /* intel_sprite.c */
+ int intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane);
+ void intel_flush_primary_plane(struct drm_i915_private *dev_priv,
+ enum plane plane);
+ void intel_plane_restore(struct drm_plane *plane);
+ void intel_plane_disable(struct drm_plane *plane);
+ int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+ int intel_sprite_get_colorkey(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+
++bool intel_crtc_active(struct drm_crtc *crtc);
+
+ /* intel_tv.c */
+ void intel_tv_init(struct drm_device *dev);
#endif /* __INTEL_DRV_H__ */
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the drm-intel tree
@ 2013-10-10 16:51 ` Mark Brown
0 siblings, 0 replies; 23+ messages in thread
From: Mark Brown @ 2013-10-10 16:51 UTC (permalink / raw)
To: Jani Nikula, Ville Syrjälä,
Dave Airlie, Paulo Zanoni, Daniel Vetter
Cc: intel-gfx, dri-devel, linux-next, linux-kernel, Thierry Reding
[-- Attachment #1: Type: text/plain, Size: 2136 bytes --]
Today's linux-next merge of the drm-intel tree got additional conflicts
in drivers/gpu/drm/i915/intel_drv.h as a result of interactions between
6aba5b6cf098 (drm/i915/dp: get rid of intel_dp->link_configuration) and
various commits from Paulo Zanoni staticising functions. I've fixed up
by changing the resolution to that below and can carry:
diff --cc drivers/gpu/drm/i915/i915_dma.c
index 637b695,df6efbf..0c86c48
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@@ -1330,9 -1333,11 +1333,11 @@@ static int i915_load_modeset_init(struc
/* Always safe in the mode setting case. */
/* FIXME: do pre/post-mode set stuff in core KMS code */
- dev->vblank_disable_allowed = 1;
+ dev->vblank_disable_allowed = true;
- if (INTEL_INFO(dev)->num_pipes == 0)
+ if (INTEL_INFO(dev)->num_pipes == 0) {
+ intel_display_power_put(dev, POWER_DOMAIN_VGA);
return 0;
+ }
ret = intel_fbdev_init(dev);
if (ret)
@@@ -1473,7 -1480,14 +1480,7 @@@ int i915_driver_load(struct drm_device
if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET))
return -ENODEV;
- dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
- /* i915 has 4 more counters */
- dev->counters += 4;
- dev->types[6] = _DRM_STAT_IRQ;
- dev->types[7] = _DRM_STAT_PRIMARY;
- dev->types[8] = _DRM_STAT_SECONDARY;
- dev->types[9] = _DRM_STAT_DMA;
-
+ dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
if (dev_priv == NULL)
return -ENOMEM;
diff --cc drivers/gpu/drm/i915/intel_dp.c
index 98f3b64,f831464..c392ad2
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@@ -1532,8 -1558,8 +1541,8 @@@ static void intel_edp_psr_setup(struct
intel_edp_psr_write_vsc(intel_dp, &psr_vsc);
/* Avoid continuous PSR exit by masking memup and hpd */
- I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP |
+ I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
- EDP_PSR_DEBUG_MASK_HPD);
+ EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
intel_dp->psr_setup_done = true;
}
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the drm-intel tree
@ 2013-10-10 16:51 ` Mark Brown
0 siblings, 0 replies; 23+ messages in thread
From: Mark Brown @ 2013-10-10 16:51 UTC (permalink / raw)
To: Jani Nikula, Ville Syrjälä,
Dave Airlie, Paulo Zanoni, Daniel Vetter
Cc: intel-gfx, linux-next, Thierry Reding, linux-kernel, dri-devel
[-- Attachment #1.1: Type: text/plain, Size: 2136 bytes --]
Today's linux-next merge of the drm-intel tree got additional conflicts
in drivers/gpu/drm/i915/intel_drv.h as a result of interactions between
6aba5b6cf098 (drm/i915/dp: get rid of intel_dp->link_configuration) and
various commits from Paulo Zanoni staticising functions. I've fixed up
by changing the resolution to that below and can carry:
diff --cc drivers/gpu/drm/i915/i915_dma.c
index 637b695,df6efbf..0c86c48
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@@ -1330,9 -1333,11 +1333,11 @@@ static int i915_load_modeset_init(struc
/* Always safe in the mode setting case. */
/* FIXME: do pre/post-mode set stuff in core KMS code */
- dev->vblank_disable_allowed = 1;
+ dev->vblank_disable_allowed = true;
- if (INTEL_INFO(dev)->num_pipes == 0)
+ if (INTEL_INFO(dev)->num_pipes == 0) {
+ intel_display_power_put(dev, POWER_DOMAIN_VGA);
return 0;
+ }
ret = intel_fbdev_init(dev);
if (ret)
@@@ -1473,7 -1480,14 +1480,7 @@@ int i915_driver_load(struct drm_device
if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET))
return -ENODEV;
- dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
- /* i915 has 4 more counters */
- dev->counters += 4;
- dev->types[6] = _DRM_STAT_IRQ;
- dev->types[7] = _DRM_STAT_PRIMARY;
- dev->types[8] = _DRM_STAT_SECONDARY;
- dev->types[9] = _DRM_STAT_DMA;
-
+ dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
if (dev_priv == NULL)
return -ENOMEM;
diff --cc drivers/gpu/drm/i915/intel_dp.c
index 98f3b64,f831464..c392ad2
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@@ -1532,8 -1558,8 +1541,8 @@@ static void intel_edp_psr_setup(struct
intel_edp_psr_write_vsc(intel_dp, &psr_vsc);
/* Avoid continuous PSR exit by masking memup and hpd */
- I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP |
+ I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
- EDP_PSR_DEBUG_MASK_HPD);
+ EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
intel_dp->psr_setup_done = true;
}
[-- Attachment #1.2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
[-- Attachment #2: Type: text/plain, Size: 159 bytes --]
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: Tree for Oct 7
@ 2013-10-07 15:18 Thierry Reding
2013-10-07 15:18 ` linux-next: manual merge of the drm-intel tree Thierry Reding
0 siblings, 1 reply; 23+ messages in thread
From: Thierry Reding @ 2013-10-07 15:18 UTC (permalink / raw)
To: linux-next, linux-kernel; +Cc: Mark Brown
Hi all,
I've uploaded today's linux-next tree to the master branch of the
repository below:
git://gitorious.org/thierryreding/linux-next.git
A next-20131007 tag is also provided for convenience.
No new conflicts today. i386, x86_64 and ARM default configurations did
build fine. There were some build failures unrelated to the merge, most
of which I fixed and added as patches on top of the final merge.
Thierry
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the drm-intel tree
2013-10-07 15:18 linux-next: Tree for Oct 7 Thierry Reding
@ 2013-10-07 15:18 ` Thierry Reding
0 siblings, 0 replies; 23+ messages in thread
From: Thierry Reding @ 2013-10-07 15:18 UTC (permalink / raw)
To: Daniel Vetter, Ben Widawsky, Rodrigo Vivi; +Cc: linux-next, linux-kernel
Today's linux-next merge of the drm-intel tree got a conflict in:
drivers/gpu/drm/i915/intel_dp.c
caused by commits 0cc4b69 (drm/i915: Mask LPSP to get PSR working even with
Power Well in use by audio.) and 18b5992 (drm/i915: Calculate PSR register
offsets from base + gen). I fixed it up (see below). Please verify that the
resolution looks correct.
Thanks,
Thierry
---
diff --cc drivers/gpu/drm/i915/intel_dp.c
index bc6579e,c4c280c..f349931
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@@ -1549,8 -1558,8 +1558,8 @@@ static void intel_edp_psr_setup(struct
intel_edp_psr_write_vsc(intel_dp, &psr_vsc);
/* Avoid continuous PSR exit by masking memup and hpd */
- I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP |
+ I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
- EDP_PSR_DEBUG_MASK_HPD);
+ EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
intel_dp->psr_setup_done = true;
}
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the bcon tree
@ 2013-09-30 11:26 Thierry Reding
2013-09-30 11:26 ` Thierry Reding
0 siblings, 1 reply; 23+ messages in thread
From: Thierry Reding @ 2013-09-30 11:26 UTC (permalink / raw)
To: Joern Engel; +Cc: linux-next, linux-kernel
Today's linux-next merge of the bcon tree got conflicts in
drivers/block/Kconfig
kernel/printk.c
I fixed it up (see below). Please check if the resolution looks correct.
Thanks,
Thierry
---
diff --cc drivers/block/Kconfig
index 555aed0,06eb42f..4cd9323
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@@ -541,14 -544,10 +541,20 @@@ config BLK_DEV_RB
If unsure, say N.
+config BLK_DEV_RSXX
+ tristate "IBM Flash Adapter 900GB Full Height PCIe Device Driver"
+ depends on PCI
+ help
+ Device driver for IBM's high speed PCIe SSD
+ storage device: Flash Adapter 900GB Full Height.
+
+ To compile this driver as a module, choose M here: the
+ module will be called rsxx.
+
+ config BLOCKCONSOLE
+ bool "Block device console logging support"
+ help
+ This enables logging to block devices.
+ See <file:Documentation/block/blockconsole.txt> for details.
+
endif # BLK_DEV
diff --cc drivers/block/Makefile
index f33b366,99c5c2e..08da80f
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@@ -40,9 -40,6 +40,10 @@@ obj-$(CONFIG_XEN_BLKDEV_BACKEND) += xen
obj-$(CONFIG_BLK_DEV_DRBD) += drbd/
obj-$(CONFIG_BLK_DEV_RBD) += rbd.o
obj-$(CONFIG_BLK_DEV_PCIESSD_MTIP32XX) += mtip32xx/
+ obj-$(CONFIG_BLOCKCONSOLE) += blockconsole.o
+obj-$(CONFIG_BLK_DEV_RSXX) += rsxx/
+
+nvme-y := nvme-core.o nvme-scsi.o
+skd-y := skd_main.o
swim_mod-y := swim.o swim_asm.o
diff --cc kernel/printk/printk.c
index b4e8500,0000000..1cba1ea
mode 100644,000000..100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@@ -1,2910 -1,0 +1,2911 @@@
+/*
+ * linux/kernel/printk.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * Modified to make sys_syslog() more flexible: added commands to
+ * return the last 4k of kernel messages, regardless of whether
+ * they've been read or not. Added option to suppress kernel printk's
+ * to the console. Added hook for sending the console messages
+ * elsewhere, in preparation for a serial line console (someday).
+ * Ted Ts'o, 2/11/93.
+ * Modified for sysctl support, 1/8/97, Chris Horn.
+ * Fixed SMP synchronization, 08/08/99, Manfred Spraul
+ * manfred@colorfullife.com
+ * Rewrote bits to get rid of console_lock
+ * 01Mar01 Andrew Morton
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/nmi.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h> /* For in_interrupt() */
+#include <linux/delay.h>
+#include <linux/smp.h>
+#include <linux/security.h>
+#include <linux/bootmem.h>
+#include <linux/memblock.h>
+#include <linux/aio.h>
+#include <linux/syscalls.h>
+#include <linux/kexec.h>
+#include <linux/kdb.h>
+#include <linux/ratelimit.h>
+#include <linux/kmsg_dump.h>
+#include <linux/syslog.h>
+#include <linux/cpu.h>
+#include <linux/notifier.h>
+#include <linux/rculist.h>
+#include <linux/poll.h>
+#include <linux/irq_work.h>
+#include <linux/utsname.h>
+
+#include <asm/uaccess.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/printk.h>
+
+#include "console_cmdline.h"
+#include "braille.h"
+
+/* printk's without a loglevel use this.. */
+#define DEFAULT_MESSAGE_LOGLEVEL CONFIG_DEFAULT_MESSAGE_LOGLEVEL
+
+/* We show everything that is MORE important than this.. */
+#define MINIMUM_CONSOLE_LOGLEVEL 1 /* Minimum loglevel we let people use */
+#define DEFAULT_CONSOLE_LOGLEVEL 7 /* anything MORE serious than KERN_DEBUG */
+
+int console_printk[4] = {
+ DEFAULT_CONSOLE_LOGLEVEL, /* console_loglevel */
+ DEFAULT_MESSAGE_LOGLEVEL, /* default_message_loglevel */
+ MINIMUM_CONSOLE_LOGLEVEL, /* minimum_console_loglevel */
+ DEFAULT_CONSOLE_LOGLEVEL, /* default_console_loglevel */
+};
+
+/*
+ * Low level drivers may need that to know if they can schedule in
+ * their unblank() callback or not. So let's export it.
+ */
+int oops_in_progress;
+EXPORT_SYMBOL(oops_in_progress);
+
+/*
+ * console_sem protects the console_drivers list, and also
+ * provides serialisation for access to the entire console
+ * driver system.
+ */
+static DEFINE_SEMAPHORE(console_sem);
+struct console *console_drivers;
+EXPORT_SYMBOL_GPL(console_drivers);
+
+#ifdef CONFIG_LOCKDEP
+static struct lockdep_map console_lock_dep_map = {
+ .name = "console_lock"
+};
+#endif
+
+/*
+ * This is used for debugging the mess that is the VT code by
+ * keeping track if we have the console semaphore held. It's
+ * definitely not the perfect debug tool (we don't know if _WE_
+ * hold it are racing, but it helps tracking those weird code
+ * path in the console code where we end up in places I want
+ * locked without the console sempahore held
+ */
+static int console_locked, console_suspended;
+
+/*
+ * If exclusive_console is non-NULL then only this console is to be printed to.
+ */
+static struct console *exclusive_console;
+
+/*
+ * Array of consoles built from command line options (console=)
+ */
+
+#define MAX_CMDLINECONSOLES 8
+
+static struct console_cmdline console_cmdline[MAX_CMDLINECONSOLES];
+
+static int selected_console = -1;
+static int preferred_console = -1;
+int console_set_on_cmdline;
+EXPORT_SYMBOL(console_set_on_cmdline);
+
+/* Flag: console code may call schedule() */
+static int console_may_schedule;
+
+/*
+ * The printk log buffer consists of a chain of concatenated variable
+ * length records. Every record starts with a record header, containing
+ * the overall length of the record.
+ *
+ * The heads to the first and last entry in the buffer, as well as the
+ * sequence numbers of these both entries are maintained when messages
+ * are stored..
+ *
+ * If the heads indicate available messages, the length in the header
+ * tells the start next message. A length == 0 for the next message
+ * indicates a wrap-around to the beginning of the buffer.
+ *
+ * Every record carries the monotonic timestamp in microseconds, as well as
+ * the standard userspace syslog level and syslog facility. The usual
+ * kernel messages use LOG_KERN; userspace-injected messages always carry
+ * a matching syslog facility, by default LOG_USER. The origin of every
+ * message can be reliably determined that way.
+ *
+ * The human readable log message directly follows the message header. The
+ * length of the message text is stored in the header, the stored message
+ * is not terminated.
+ *
+ * Optionally, a message can carry a dictionary of properties (key/value pairs),
+ * to provide userspace with a machine-readable message context.
+ *
+ * Examples for well-defined, commonly used property names are:
+ * DEVICE=b12:8 device identifier
+ * b12:8 block dev_t
+ * c127:3 char dev_t
+ * n8 netdev ifindex
+ * +sound:card0 subsystem:devname
+ * SUBSYSTEM=pci driver-core subsystem name
+ *
+ * Valid characters in property names are [a-zA-Z0-9.-_]. The plain text value
+ * follows directly after a '=' character. Every property is terminated by
+ * a '\0' character. The last property is not terminated.
+ *
+ * Example of a message structure:
+ * 0000 ff 8f 00 00 00 00 00 00 monotonic time in nsec
+ * 0008 34 00 record is 52 bytes long
+ * 000a 0b 00 text is 11 bytes long
+ * 000c 1f 00 dictionary is 23 bytes long
+ * 000e 03 00 LOG_KERN (facility) LOG_ERR (level)
+ * 0010 69 74 27 73 20 61 20 6c "it's a l"
+ * 69 6e 65 "ine"
+ * 001b 44 45 56 49 43 "DEVIC"
+ * 45 3d 62 38 3a 32 00 44 "E=b8:2\0D"
+ * 52 49 56 45 52 3d 62 75 "RIVER=bu"
+ * 67 "g"
+ * 0032 00 00 00 padding to next message header
+ *
+ * The 'struct printk_log' buffer header must never be directly exported to
+ * userspace, it is a kernel-private implementation detail that might
+ * need to be changed in the future, when the requirements change.
+ *
+ * /dev/kmsg exports the structured data in the following line format:
+ * "level,sequnum,timestamp;<message text>\n"
+ *
+ * The optional key/value pairs are attached as continuation lines starting
+ * with a space character and terminated by a newline. All possible
+ * non-prinatable characters are escaped in the "\xff" notation.
+ *
+ * Users of the export format should ignore possible additional values
+ * separated by ',', and find the message after the ';' character.
+ */
+
+enum log_flags {
+ LOG_NOCONS = 1, /* already flushed, do not print to console */
+ LOG_NEWLINE = 2, /* text ended with a newline */
+ LOG_PREFIX = 4, /* text started with a prefix */
+ LOG_CONT = 8, /* text is a fragment of a continuation line */
+};
+
+struct printk_log {
+ u64 ts_nsec; /* timestamp in nanoseconds */
+ u16 len; /* length of entire record */
+ u16 text_len; /* length of text buffer */
+ u16 dict_len; /* length of dictionary buffer */
+ u8 facility; /* syslog facility */
+ u8 flags:5; /* internal record flags */
+ u8 level:3; /* syslog level */
+};
+
+/*
+ * The logbuf_lock protects kmsg buffer, indices, counters. It is also
+ * used in interesting ways to provide interlocking in console_unlock();
+ */
+static DEFINE_RAW_SPINLOCK(logbuf_lock);
+
+#ifdef CONFIG_PRINTK
+DECLARE_WAIT_QUEUE_HEAD(log_wait);
+/* the next printk record to read by syslog(READ) or /proc/kmsg */
+static u64 syslog_seq;
+static u32 syslog_idx;
+static enum log_flags syslog_prev;
+static size_t syslog_partial;
+
+/* index and sequence number of the first record stored in the buffer */
+static u64 log_first_seq;
+static u32 log_first_idx;
+
+/* index and sequence number of the next record to store in the buffer */
+static u64 log_next_seq;
+static u32 log_next_idx;
+
+/* the next printk record to write to the console */
+static u64 console_seq;
+static u32 console_idx;
+static enum log_flags console_prev;
+
+/* the next printk record to read after the last 'clear' command */
+static u64 clear_seq;
+static u32 clear_idx;
+
+#define PREFIX_MAX 32
+#define LOG_LINE_MAX 1024 - PREFIX_MAX
+
+/* record buffer */
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
+#define LOG_ALIGN 4
+#else
+#define LOG_ALIGN __alignof__(struct printk_log)
+#endif
+#define __LOG_BUF_LEN (1 << CONFIG_LOG_BUF_SHIFT)
+static char __log_buf[__LOG_BUF_LEN] __aligned(LOG_ALIGN);
+static char *log_buf = __log_buf;
+static u32 log_buf_len = __LOG_BUF_LEN;
+
+/* cpu currently holding logbuf_lock */
+static volatile unsigned int logbuf_cpu = UINT_MAX;
+
+/* human readable text of the record */
+static char *log_text(const struct printk_log *msg)
+{
+ return (char *)msg + sizeof(struct printk_log);
+}
+
+/* optional key/value pair dictionary attached to the record */
+static char *log_dict(const struct printk_log *msg)
+{
+ return (char *)msg + sizeof(struct printk_log) + msg->text_len;
+}
+
+/* get record by index; idx must point to valid msg */
+static struct printk_log *log_from_idx(u32 idx)
+{
+ struct printk_log *msg = (struct printk_log *)(log_buf + idx);
+
+ /*
+ * A length == 0 record is the end of buffer marker. Wrap around and
+ * read the message at the start of the buffer.
+ */
+ if (!msg->len)
+ return (struct printk_log *)log_buf;
+ return msg;
+}
+
+/* get next record; idx must point to valid msg */
+static u32 log_next(u32 idx)
+{
+ struct printk_log *msg = (struct printk_log *)(log_buf + idx);
+
+ /* length == 0 indicates the end of the buffer; wrap */
+ /*
+ * A length == 0 record is the end of buffer marker. Wrap around and
+ * read the message at the start of the buffer as *this* one, and
+ * return the one after that.
+ */
+ if (!msg->len) {
+ msg = (struct printk_log *)log_buf;
+ return msg->len;
+ }
+ return idx + msg->len;
+}
+
+/* insert record into the buffer, discard old ones, update heads */
+static void log_store(int facility, int level,
+ enum log_flags flags, u64 ts_nsec,
+ const char *dict, u16 dict_len,
+ const char *text, u16 text_len)
+{
+ struct printk_log *msg;
+ u32 size, pad_len;
+
+ /* number of '\0' padding bytes to next message */
+ size = sizeof(struct printk_log) + text_len + dict_len;
+ pad_len = (-size) & (LOG_ALIGN - 1);
+ size += pad_len;
+
+ while (log_first_seq < log_next_seq) {
+ u32 free;
+
+ if (log_next_idx > log_first_idx)
+ free = max(log_buf_len - log_next_idx, log_first_idx);
+ else
+ free = log_first_idx - log_next_idx;
+
+ if (free > size + sizeof(struct printk_log))
+ break;
+
+ /* drop old messages until we have enough contiuous space */
+ log_first_idx = log_next(log_first_idx);
+ log_first_seq++;
+ }
+
+ if (log_next_idx + size + sizeof(struct printk_log) >= log_buf_len) {
+ /*
+ * This message + an additional empty header does not fit
+ * at the end of the buffer. Add an empty header with len == 0
+ * to signify a wrap around.
+ */
+ memset(log_buf + log_next_idx, 0, sizeof(struct printk_log));
+ log_next_idx = 0;
+ }
+
+ /* fill message */
+ msg = (struct printk_log *)(log_buf + log_next_idx);
+ memcpy(log_text(msg), text, text_len);
+ msg->text_len = text_len;
+ memcpy(log_dict(msg), dict, dict_len);
+ msg->dict_len = dict_len;
+ msg->facility = facility;
+ msg->level = level & 7;
+ msg->flags = flags & 0x1f;
+ if (ts_nsec > 0)
+ msg->ts_nsec = ts_nsec;
+ else
+ msg->ts_nsec = local_clock();
+ memset(log_dict(msg) + dict_len, 0, pad_len);
+ msg->len = sizeof(struct printk_log) + text_len + dict_len + pad_len;
+
+ /* insert message */
+ log_next_idx += msg->len;
+ log_next_seq++;
+}
+
+#ifdef CONFIG_SECURITY_DMESG_RESTRICT
+int dmesg_restrict = 1;
+#else
+int dmesg_restrict;
+#endif
+
+static int syslog_action_restricted(int type)
+{
+ if (dmesg_restrict)
+ return 1;
+ /*
+ * Unless restricted, we allow "read all" and "get buffer size"
+ * for everybody.
+ */
+ return type != SYSLOG_ACTION_READ_ALL &&
+ type != SYSLOG_ACTION_SIZE_BUFFER;
+}
+
+static int check_syslog_permissions(int type, bool from_file)
+{
+ /*
+ * If this is from /proc/kmsg and we've already opened it, then we've
+ * already done the capabilities checks at open time.
+ */
+ if (from_file && type != SYSLOG_ACTION_OPEN)
+ return 0;
+
+ if (syslog_action_restricted(type)) {
+ if (capable(CAP_SYSLOG))
+ return 0;
+ /*
+ * For historical reasons, accept CAP_SYS_ADMIN too, with
+ * a warning.
+ */
+ if (capable(CAP_SYS_ADMIN)) {
+ pr_warn_once("%s (%d): Attempt to access syslog with "
+ "CAP_SYS_ADMIN but no CAP_SYSLOG "
+ "(deprecated).\n",
+ current->comm, task_pid_nr(current));
+ return 0;
+ }
+ return -EPERM;
+ }
+ return security_syslog(type);
+}
+
+
+/* /dev/kmsg - userspace message inject/listen interface */
+struct devkmsg_user {
+ u64 seq;
+ u32 idx;
+ enum log_flags prev;
+ struct mutex lock;
+ char buf[8192];
+};
+
+static ssize_t devkmsg_writev(struct kiocb *iocb, const struct iovec *iv,
+ unsigned long count, loff_t pos)
+{
+ char *buf, *line;
+ int i;
+ int level = default_message_loglevel;
+ int facility = 1; /* LOG_USER */
+ size_t len = iov_length(iv, count);
+ ssize_t ret = len;
+
+ if (len > LOG_LINE_MAX)
+ return -EINVAL;
+ buf = kmalloc(len+1, GFP_KERNEL);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ line = buf;
+ for (i = 0; i < count; i++) {
+ if (copy_from_user(line, iv[i].iov_base, iv[i].iov_len)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ line += iv[i].iov_len;
+ }
+
+ /*
+ * Extract and skip the syslog prefix <[0-9]*>. Coming from userspace
+ * the decimal value represents 32bit, the lower 3 bit are the log
+ * level, the rest are the log facility.
+ *
+ * If no prefix or no userspace facility is specified, we
+ * enforce LOG_USER, to be able to reliably distinguish
+ * kernel-generated messages from userspace-injected ones.
+ */
+ line = buf;
+ if (line[0] == '<') {
+ char *endp = NULL;
+
+ i = simple_strtoul(line+1, &endp, 10);
+ if (endp && endp[0] == '>') {
+ level = i & 7;
+ if (i >> 3)
+ facility = i >> 3;
+ endp++;
+ len -= endp - line;
+ line = endp;
+ }
+ }
+ line[len] = '\0';
+
+ printk_emit(facility, level, NULL, 0, "%s", line);
+out:
+ kfree(buf);
+ return ret;
+}
+
+static ssize_t devkmsg_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct devkmsg_user *user = file->private_data;
+ struct printk_log *msg;
+ u64 ts_usec;
+ size_t i;
+ char cont = '-';
+ size_t len;
+ ssize_t ret;
+
+ if (!user)
+ return -EBADF;
+
+ ret = mutex_lock_interruptible(&user->lock);
+ if (ret)
+ return ret;
+ raw_spin_lock_irq(&logbuf_lock);
+ while (user->seq == log_next_seq) {
+ if (file->f_flags & O_NONBLOCK) {
+ ret = -EAGAIN;
+ raw_spin_unlock_irq(&logbuf_lock);
+ goto out;
+ }
+
+ raw_spin_unlock_irq(&logbuf_lock);
+ ret = wait_event_interruptible(log_wait,
+ user->seq != log_next_seq);
+ if (ret)
+ goto out;
+ raw_spin_lock_irq(&logbuf_lock);
+ }
+
+ if (user->seq < log_first_seq) {
+ /* our last seen message is gone, return error and reset */
+ user->idx = log_first_idx;
+ user->seq = log_first_seq;
+ ret = -EPIPE;
+ raw_spin_unlock_irq(&logbuf_lock);
+ goto out;
+ }
+
+ msg = log_from_idx(user->idx);
+ ts_usec = msg->ts_nsec;
+ do_div(ts_usec, 1000);
+
+ /*
+ * If we couldn't merge continuation line fragments during the print,
+ * export the stored flags to allow an optional external merge of the
+ * records. Merging the records isn't always neccessarily correct, like
+ * when we hit a race during printing. In most cases though, it produces
+ * better readable output. 'c' in the record flags mark the first
+ * fragment of a line, '+' the following.
+ */
+ if (msg->flags & LOG_CONT && !(user->prev & LOG_CONT))
+ cont = 'c';
+ else if ((msg->flags & LOG_CONT) ||
+ ((user->prev & LOG_CONT) && !(msg->flags & LOG_PREFIX)))
+ cont = '+';
+
+ len = sprintf(user->buf, "%u,%llu,%llu,%c;",
+ (msg->facility << 3) | msg->level,
+ user->seq, ts_usec, cont);
+ user->prev = msg->flags;
+
+ /* escape non-printable characters */
+ for (i = 0; i < msg->text_len; i++) {
+ unsigned char c = log_text(msg)[i];
+
+ if (c < ' ' || c >= 127 || c == '\\')
+ len += sprintf(user->buf + len, "\\x%02x", c);
+ else
+ user->buf[len++] = c;
+ }
+ user->buf[len++] = '\n';
+
+ if (msg->dict_len) {
+ bool line = true;
+
+ for (i = 0; i < msg->dict_len; i++) {
+ unsigned char c = log_dict(msg)[i];
+
+ if (line) {
+ user->buf[len++] = ' ';
+ line = false;
+ }
+
+ if (c == '\0') {
+ user->buf[len++] = '\n';
+ line = true;
+ continue;
+ }
+
+ if (c < ' ' || c >= 127 || c == '\\') {
+ len += sprintf(user->buf + len, "\\x%02x", c);
+ continue;
+ }
+
+ user->buf[len++] = c;
+ }
+ user->buf[len++] = '\n';
+ }
+
+ user->idx = log_next(user->idx);
+ user->seq++;
+ raw_spin_unlock_irq(&logbuf_lock);
+
+ if (len > count) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (copy_to_user(buf, user->buf, len)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ ret = len;
+out:
+ mutex_unlock(&user->lock);
+ return ret;
+}
+
+static loff_t devkmsg_llseek(struct file *file, loff_t offset, int whence)
+{
+ struct devkmsg_user *user = file->private_data;
+ loff_t ret = 0;
+
+ if (!user)
+ return -EBADF;
+ if (offset)
+ return -ESPIPE;
+
+ raw_spin_lock_irq(&logbuf_lock);
+ switch (whence) {
+ case SEEK_SET:
+ /* the first record */
+ user->idx = log_first_idx;
+ user->seq = log_first_seq;
+ break;
+ case SEEK_DATA:
+ /*
+ * The first record after the last SYSLOG_ACTION_CLEAR,
+ * like issued by 'dmesg -c'. Reading /dev/kmsg itself
+ * changes no global state, and does not clear anything.
+ */
+ user->idx = clear_idx;
+ user->seq = clear_seq;
+ break;
+ case SEEK_END:
+ /* after the last record */
+ user->idx = log_next_idx;
+ user->seq = log_next_seq;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ raw_spin_unlock_irq(&logbuf_lock);
+ return ret;
+}
+
+static unsigned int devkmsg_poll(struct file *file, poll_table *wait)
+{
+ struct devkmsg_user *user = file->private_data;
+ int ret = 0;
+
+ if (!user)
+ return POLLERR|POLLNVAL;
+
+ poll_wait(file, &log_wait, wait);
+
+ raw_spin_lock_irq(&logbuf_lock);
+ if (user->seq < log_next_seq) {
+ /* return error when data has vanished underneath us */
+ if (user->seq < log_first_seq)
+ ret = POLLIN|POLLRDNORM|POLLERR|POLLPRI;
+ else
+ ret = POLLIN|POLLRDNORM;
+ }
+ raw_spin_unlock_irq(&logbuf_lock);
+
+ return ret;
+}
+
+static int devkmsg_open(struct inode *inode, struct file *file)
+{
+ struct devkmsg_user *user;
+ int err;
+
+ /* write-only does not need any file context */
+ if ((file->f_flags & O_ACCMODE) == O_WRONLY)
+ return 0;
+
+ err = check_syslog_permissions(SYSLOG_ACTION_READ_ALL,
+ SYSLOG_FROM_READER);
+ if (err)
+ return err;
+
+ user = kmalloc(sizeof(struct devkmsg_user), GFP_KERNEL);
+ if (!user)
+ return -ENOMEM;
+
+ mutex_init(&user->lock);
+
+ raw_spin_lock_irq(&logbuf_lock);
+ user->idx = log_first_idx;
+ user->seq = log_first_seq;
+ raw_spin_unlock_irq(&logbuf_lock);
+
+ file->private_data = user;
+ return 0;
+}
+
+static int devkmsg_release(struct inode *inode, struct file *file)
+{
+ struct devkmsg_user *user = file->private_data;
+
+ if (!user)
+ return 0;
+
+ mutex_destroy(&user->lock);
+ kfree(user);
+ return 0;
+}
+
+const struct file_operations kmsg_fops = {
+ .open = devkmsg_open,
+ .read = devkmsg_read,
+ .aio_write = devkmsg_writev,
+ .llseek = devkmsg_llseek,
+ .poll = devkmsg_poll,
+ .release = devkmsg_release,
+};
+
+#ifdef CONFIG_KEXEC
+/*
+ * This appends the listed symbols to /proc/vmcoreinfo
+ *
+ * /proc/vmcoreinfo is used by various utiilties, like crash and makedumpfile to
+ * obtain access to symbols that are otherwise very difficult to locate. These
+ * symbols are specifically used so that utilities can access and extract the
+ * dmesg log from a vmcore file after a crash.
+ */
+void log_buf_kexec_setup(void)
+{
+ VMCOREINFO_SYMBOL(log_buf);
+ VMCOREINFO_SYMBOL(log_buf_len);
+ VMCOREINFO_SYMBOL(log_first_idx);
+ VMCOREINFO_SYMBOL(log_next_idx);
+ /*
+ * Export struct printk_log size and field offsets. User space tools can
+ * parse it and detect any changes to structure down the line.
+ */
+ VMCOREINFO_STRUCT_SIZE(printk_log);
+ VMCOREINFO_OFFSET(printk_log, ts_nsec);
+ VMCOREINFO_OFFSET(printk_log, len);
+ VMCOREINFO_OFFSET(printk_log, text_len);
+ VMCOREINFO_OFFSET(printk_log, dict_len);
+}
+#endif
+
+/* requested log_buf_len from kernel cmdline */
+static unsigned long __initdata new_log_buf_len;
+
+/* save requested log_buf_len since it's too early to process it */
+static int __init log_buf_len_setup(char *str)
+{
+ unsigned size = memparse(str, &str);
+
+ if (size)
+ size = roundup_pow_of_two(size);
+ if (size > log_buf_len)
+ new_log_buf_len = size;
+
+ return 0;
+}
+early_param("log_buf_len", log_buf_len_setup);
+
+void __init setup_log_buf(int early)
+{
+ unsigned long flags;
+ char *new_log_buf;
+ int free;
+
+ if (!new_log_buf_len)
+ return;
+
+ if (early) {
+ unsigned long mem;
+
+ mem = memblock_alloc(new_log_buf_len, PAGE_SIZE);
+ if (!mem)
+ return;
+ new_log_buf = __va(mem);
+ } else {
+ new_log_buf = alloc_bootmem_nopanic(new_log_buf_len);
+ }
+
+ if (unlikely(!new_log_buf)) {
+ pr_err("log_buf_len: %ld bytes not available\n",
+ new_log_buf_len);
+ return;
+ }
+
+ raw_spin_lock_irqsave(&logbuf_lock, flags);
+ log_buf_len = new_log_buf_len;
+ log_buf = new_log_buf;
+ new_log_buf_len = 0;
+ free = __LOG_BUF_LEN - log_next_idx;
+ memcpy(log_buf, __log_buf, __LOG_BUF_LEN);
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+
+ pr_info("log_buf_len: %d\n", log_buf_len);
+ pr_info("early log buf free: %d(%d%%)\n",
+ free, (free * 100) / __LOG_BUF_LEN);
+}
+
+static bool __read_mostly ignore_loglevel;
+
+static int __init ignore_loglevel_setup(char *str)
+{
+ ignore_loglevel = 1;
+ printk(KERN_INFO "debug: ignoring loglevel setting.\n");
+
+ return 0;
+}
+
+early_param("ignore_loglevel", ignore_loglevel_setup);
+module_param(ignore_loglevel, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ignore_loglevel, "ignore loglevel setting, to"
+ "print all kernel messages to the console.");
+
+#ifdef CONFIG_BOOT_PRINTK_DELAY
+
+static int boot_delay; /* msecs delay after each printk during bootup */
+static unsigned long long loops_per_msec; /* based on boot_delay */
+
+static int __init boot_delay_setup(char *str)
+{
+ unsigned long lpj;
+
+ lpj = preset_lpj ? preset_lpj : 1000000; /* some guess */
+ loops_per_msec = (unsigned long long)lpj / 1000 * HZ;
+
+ get_option(&str, &boot_delay);
+ if (boot_delay > 10 * 1000)
+ boot_delay = 0;
+
+ pr_debug("boot_delay: %u, preset_lpj: %ld, lpj: %lu, "
+ "HZ: %d, loops_per_msec: %llu\n",
+ boot_delay, preset_lpj, lpj, HZ, loops_per_msec);
+ return 1;
+}
+__setup("boot_delay=", boot_delay_setup);
+
+static void boot_delay_msec(int level)
+{
+ unsigned long long k;
+ unsigned long timeout;
+
+ if ((boot_delay == 0 || system_state != SYSTEM_BOOTING)
+ || (level >= console_loglevel && !ignore_loglevel)) {
+ return;
+ }
+
+ k = (unsigned long long)loops_per_msec * boot_delay;
+
+ timeout = jiffies + msecs_to_jiffies(boot_delay);
+ while (k) {
+ k--;
+ cpu_relax();
+ /*
+ * use (volatile) jiffies to prevent
+ * compiler reduction; loop termination via jiffies
+ * is secondary and may or may not happen.
+ */
+ if (time_after(jiffies, timeout))
+ break;
+ touch_nmi_watchdog();
+ }
+}
+#else
+static inline void boot_delay_msec(int level)
+{
+}
+#endif
+
+#if defined(CONFIG_PRINTK_TIME)
+static bool printk_time = 1;
+#else
+static bool printk_time;
+#endif
+module_param_named(time, printk_time, bool, S_IRUGO | S_IWUSR);
+
+static size_t print_time(u64 ts, char *buf)
+{
+ unsigned long rem_nsec;
+
+ if (!printk_time)
+ return 0;
+
+ rem_nsec = do_div(ts, 1000000000);
+
+ if (!buf)
+ return snprintf(NULL, 0, "[%5lu.000000] ", (unsigned long)ts);
+
+ return sprintf(buf, "[%5lu.%06lu] ",
+ (unsigned long)ts, rem_nsec / 1000);
+}
+
+static size_t print_prefix(const struct printk_log *msg, bool syslog, char *buf)
+{
+ size_t len = 0;
+ unsigned int prefix = (msg->facility << 3) | msg->level;
+
+ if (syslog) {
+ if (buf) {
+ len += sprintf(buf, "<%u>", prefix);
+ } else {
+ len += 3;
+ if (prefix > 999)
+ len += 3;
+ else if (prefix > 99)
+ len += 2;
+ else if (prefix > 9)
+ len++;
+ }
+ }
+
+ len += print_time(msg->ts_nsec, buf ? buf + len : NULL);
+ return len;
+}
+
+static size_t msg_print_text(const struct printk_log *msg, enum log_flags prev,
+ bool syslog, char *buf, size_t size)
+{
+ const char *text = log_text(msg);
+ size_t text_size = msg->text_len;
+ bool prefix = true;
+ bool newline = true;
+ size_t len = 0;
+
+ if ((prev & LOG_CONT) && !(msg->flags & LOG_PREFIX))
+ prefix = false;
+
+ if (msg->flags & LOG_CONT) {
+ if ((prev & LOG_CONT) && !(prev & LOG_NEWLINE))
+ prefix = false;
+
+ if (!(msg->flags & LOG_NEWLINE))
+ newline = false;
+ }
+
+ do {
+ const char *next = memchr(text, '\n', text_size);
+ size_t text_len;
+
+ if (next) {
+ text_len = next - text;
+ next++;
+ text_size -= next - text;
+ } else {
+ text_len = text_size;
+ }
+
+ if (buf) {
+ if (print_prefix(msg, syslog, NULL) +
+ text_len + 1 >= size - len)
+ break;
+
+ if (prefix)
+ len += print_prefix(msg, syslog, buf + len);
+ memcpy(buf + len, text, text_len);
+ len += text_len;
+ if (next || newline)
+ buf[len++] = '\n';
+ } else {
+ /* SYSLOG_ACTION_* buffer size only calculation */
+ if (prefix)
+ len += print_prefix(msg, syslog, NULL);
+ len += text_len;
+ if (next || newline)
+ len++;
+ }
+
+ prefix = true;
+ text = next;
+ } while (text);
+
+ return len;
+}
+
+static int syslog_print(char __user *buf, int size)
+{
+ char *text;
+ struct printk_log *msg;
+ int len = 0;
+
+ text = kmalloc(LOG_LINE_MAX + PREFIX_MAX, GFP_KERNEL);
+ if (!text)
+ return -ENOMEM;
+
+ while (size > 0) {
+ size_t n;
+ size_t skip;
+
+ raw_spin_lock_irq(&logbuf_lock);
+ if (syslog_seq < log_first_seq) {
+ /* messages are gone, move to first one */
+ syslog_seq = log_first_seq;
+ syslog_idx = log_first_idx;
+ syslog_prev = 0;
+ syslog_partial = 0;
+ }
+ if (syslog_seq == log_next_seq) {
+ raw_spin_unlock_irq(&logbuf_lock);
+ break;
+ }
+
+ skip = syslog_partial;
+ msg = log_from_idx(syslog_idx);
+ n = msg_print_text(msg, syslog_prev, true, text,
+ LOG_LINE_MAX + PREFIX_MAX);
+ if (n - syslog_partial <= size) {
+ /* message fits into buffer, move forward */
+ syslog_idx = log_next(syslog_idx);
+ syslog_seq++;
+ syslog_prev = msg->flags;
+ n -= syslog_partial;
+ syslog_partial = 0;
+ } else if (!len){
+ /* partial read(), remember position */
+ n = size;
+ syslog_partial += n;
+ } else
+ n = 0;
+ raw_spin_unlock_irq(&logbuf_lock);
+
+ if (!n)
+ break;
+
+ if (copy_to_user(buf, text + skip, n)) {
+ if (!len)
+ len = -EFAULT;
+ break;
+ }
+
+ len += n;
+ size -= n;
+ buf += n;
+ }
+
+ kfree(text);
+ return len;
+}
+
+static int syslog_print_all(char __user *buf, int size, bool clear)
+{
+ char *text;
+ int len = 0;
+
+ text = kmalloc(LOG_LINE_MAX + PREFIX_MAX, GFP_KERNEL);
+ if (!text)
+ return -ENOMEM;
+
+ raw_spin_lock_irq(&logbuf_lock);
+ if (buf) {
+ u64 next_seq;
+ u64 seq;
+ u32 idx;
+ enum log_flags prev;
+
+ if (clear_seq < log_first_seq) {
+ /* messages are gone, move to first available one */
+ clear_seq = log_first_seq;
+ clear_idx = log_first_idx;
+ }
+
+ /*
+ * Find first record that fits, including all following records,
+ * into the user-provided buffer for this dump.
+ */
+ seq = clear_seq;
+ idx = clear_idx;
+ prev = 0;
+ while (seq < log_next_seq) {
+ struct printk_log *msg = log_from_idx(idx);
+
+ len += msg_print_text(msg, prev, true, NULL, 0);
+ prev = msg->flags;
+ idx = log_next(idx);
+ seq++;
+ }
+
+ /* move first record forward until length fits into the buffer */
+ seq = clear_seq;
+ idx = clear_idx;
+ prev = 0;
+ while (len > size && seq < log_next_seq) {
+ struct printk_log *msg = log_from_idx(idx);
+
+ len -= msg_print_text(msg, prev, true, NULL, 0);
+ prev = msg->flags;
+ idx = log_next(idx);
+ seq++;
+ }
+
+ /* last message fitting into this dump */
+ next_seq = log_next_seq;
+
+ len = 0;
+ prev = 0;
+ while (len >= 0 && seq < next_seq) {
+ struct printk_log *msg = log_from_idx(idx);
+ int textlen;
+
+ textlen = msg_print_text(msg, prev, true, text,
+ LOG_LINE_MAX + PREFIX_MAX);
+ if (textlen < 0) {
+ len = textlen;
+ break;
+ }
+ idx = log_next(idx);
+ seq++;
+ prev = msg->flags;
+
+ raw_spin_unlock_irq(&logbuf_lock);
+ if (copy_to_user(buf + len, text, textlen))
+ len = -EFAULT;
+ else
+ len += textlen;
+ raw_spin_lock_irq(&logbuf_lock);
+
+ if (seq < log_first_seq) {
+ /* messages are gone, move to next one */
+ seq = log_first_seq;
+ idx = log_first_idx;
+ prev = 0;
+ }
+ }
+ }
+
+ if (clear) {
+ clear_seq = log_next_seq;
+ clear_idx = log_next_idx;
+ }
+ raw_spin_unlock_irq(&logbuf_lock);
+
+ kfree(text);
+ return len;
+}
+
+int do_syslog(int type, char __user *buf, int len, bool from_file)
+{
+ bool clear = false;
+ static int saved_console_loglevel = -1;
+ int error;
+
+ error = check_syslog_permissions(type, from_file);
+ if (error)
+ goto out;
+
+ error = security_syslog(type);
+ if (error)
+ return error;
+
+ switch (type) {
+ case SYSLOG_ACTION_CLOSE: /* Close log */
+ break;
+ case SYSLOG_ACTION_OPEN: /* Open log */
+ break;
+ case SYSLOG_ACTION_READ: /* Read from log */
+ error = -EINVAL;
+ if (!buf || len < 0)
+ goto out;
+ error = 0;
+ if (!len)
+ goto out;
+ if (!access_ok(VERIFY_WRITE, buf, len)) {
+ error = -EFAULT;
+ goto out;
+ }
+ error = wait_event_interruptible(log_wait,
+ syslog_seq != log_next_seq);
+ if (error)
+ goto out;
+ error = syslog_print(buf, len);
+ break;
+ /* Read/clear last kernel messages */
+ case SYSLOG_ACTION_READ_CLEAR:
+ clear = true;
+ /* FALL THRU */
+ /* Read last kernel messages */
+ case SYSLOG_ACTION_READ_ALL:
+ error = -EINVAL;
+ if (!buf || len < 0)
+ goto out;
+ error = 0;
+ if (!len)
+ goto out;
+ if (!access_ok(VERIFY_WRITE, buf, len)) {
+ error = -EFAULT;
+ goto out;
+ }
+ error = syslog_print_all(buf, len, clear);
+ break;
+ /* Clear ring buffer */
+ case SYSLOG_ACTION_CLEAR:
+ syslog_print_all(NULL, 0, true);
+ break;
+ /* Disable logging to console */
+ case SYSLOG_ACTION_CONSOLE_OFF:
+ if (saved_console_loglevel == -1)
+ saved_console_loglevel = console_loglevel;
+ console_loglevel = minimum_console_loglevel;
+ break;
+ /* Enable logging to console */
+ case SYSLOG_ACTION_CONSOLE_ON:
+ if (saved_console_loglevel != -1) {
+ console_loglevel = saved_console_loglevel;
+ saved_console_loglevel = -1;
+ }
+ break;
+ /* Set level of messages printed to console */
+ case SYSLOG_ACTION_CONSOLE_LEVEL:
+ error = -EINVAL;
+ if (len < 1 || len > 8)
+ goto out;
+ if (len < minimum_console_loglevel)
+ len = minimum_console_loglevel;
+ console_loglevel = len;
+ /* Implicitly re-enable logging to console */
+ saved_console_loglevel = -1;
+ error = 0;
+ break;
+ /* Number of chars in the log buffer */
+ case SYSLOG_ACTION_SIZE_UNREAD:
+ raw_spin_lock_irq(&logbuf_lock);
+ if (syslog_seq < log_first_seq) {
+ /* messages are gone, move to first one */
+ syslog_seq = log_first_seq;
+ syslog_idx = log_first_idx;
+ syslog_prev = 0;
+ syslog_partial = 0;
+ }
+ if (from_file) {
+ /*
+ * Short-cut for poll(/"proc/kmsg") which simply checks
+ * for pending data, not the size; return the count of
+ * records, not the length.
+ */
+ error = log_next_idx - syslog_idx;
+ } else {
+ u64 seq = syslog_seq;
+ u32 idx = syslog_idx;
+ enum log_flags prev = syslog_prev;
+
+ error = 0;
+ while (seq < log_next_seq) {
+ struct printk_log *msg = log_from_idx(idx);
+
+ error += msg_print_text(msg, prev, true, NULL, 0);
+ idx = log_next(idx);
+ seq++;
+ prev = msg->flags;
+ }
+ error -= syslog_partial;
+ }
+ raw_spin_unlock_irq(&logbuf_lock);
+ break;
+ /* Size of the log buffer */
+ case SYSLOG_ACTION_SIZE_BUFFER:
+ error = log_buf_len;
+ break;
+ default:
+ error = -EINVAL;
+ break;
+ }
+out:
+ return error;
+}
+
+SYSCALL_DEFINE3(syslog, int, type, char __user *, buf, int, len)
+{
+ return do_syslog(type, buf, len, SYSLOG_FROM_READER);
+}
+
+/*
+ * Call the console drivers, asking them to write out
+ * log_buf[start] to log_buf[end - 1].
+ * The console_lock must be held.
+ */
+static void call_console_drivers(int level, const char *text, size_t len)
+{
+ struct console *con;
+
+ trace_console(text, len);
+
- if (level >= console_loglevel && !ignore_loglevel)
- return;
+ if (!console_drivers)
+ return;
+
+ for_each_console(con) {
+ if (exclusive_console && con != exclusive_console)
+ continue;
+ if (!(con->flags & CON_ENABLED))
+ continue;
+ if (!con->write)
+ continue;
+ if (!cpu_online(smp_processor_id()) &&
+ !(con->flags & CON_ANYTIME))
+ continue;
++ if (level >= console_loglevel && !ignore_loglevel &&
++ !(con->flags & CON_ALLDATA))
++ continue;
+ con->write(con, text, len);
+ }
+}
+
+/*
+ * Zap console related locks when oopsing. Only zap at most once
+ * every 10 seconds, to leave time for slow consoles to print a
+ * full oops.
+ */
+static void zap_locks(void)
+{
+ static unsigned long oops_timestamp;
+
+ if (time_after_eq(jiffies, oops_timestamp) &&
+ !time_after(jiffies, oops_timestamp + 30 * HZ))
+ return;
+
+ oops_timestamp = jiffies;
+
+ debug_locks_off();
+ /* If a crash is occurring, make sure we can't deadlock */
+ raw_spin_lock_init(&logbuf_lock);
+ /* And make sure that we print immediately */
+ sema_init(&console_sem, 1);
+}
+
+/* Check if we have any console registered that can be called early in boot. */
+static int have_callable_console(void)
+{
+ struct console *con;
+
+ for_each_console(con)
+ if (con->flags & CON_ANYTIME)
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Can we actually use the console at this time on this cpu?
+ *
+ * Console drivers may assume that per-cpu resources have
+ * been allocated. So unless they're explicitly marked as
+ * being able to cope (CON_ANYTIME) don't call them until
+ * this CPU is officially up.
+ */
+static inline int can_use_console(unsigned int cpu)
+{
+ return cpu_online(cpu) || have_callable_console();
+}
+
+/*
+ * Try to get console ownership to actually show the kernel
+ * messages from a 'printk'. Return true (and with the
+ * console_lock held, and 'console_locked' set) if it
+ * is successful, false otherwise.
+ *
+ * This gets called with the 'logbuf_lock' spinlock held and
+ * interrupts disabled. It should return with 'lockbuf_lock'
+ * released but interrupts still disabled.
+ */
+static int console_trylock_for_printk(unsigned int cpu)
+ __releases(&logbuf_lock)
+{
+ int retval = 0, wake = 0;
+
+ if (console_trylock()) {
+ retval = 1;
+
+ /*
+ * If we can't use the console, we need to release
+ * the console semaphore by hand to avoid flushing
+ * the buffer. We need to hold the console semaphore
+ * in order to do this test safely.
+ */
+ if (!can_use_console(cpu)) {
+ console_locked = 0;
+ wake = 1;
+ retval = 0;
+ }
+ }
+ logbuf_cpu = UINT_MAX;
+ raw_spin_unlock(&logbuf_lock);
+ if (wake)
+ up(&console_sem);
+ return retval;
+}
+
+int printk_delay_msec __read_mostly;
+
+static inline void printk_delay(void)
+{
+ if (unlikely(printk_delay_msec)) {
+ int m = printk_delay_msec;
+
+ while (m--) {
+ mdelay(1);
+ touch_nmi_watchdog();
+ }
+ }
+}
+
+/*
+ * Continuation lines are buffered, and not committed to the record buffer
+ * until the line is complete, or a race forces it. The line fragments
+ * though, are printed immediately to the consoles to ensure everything has
+ * reached the console in case of a kernel crash.
+ */
+static struct cont {
+ char buf[LOG_LINE_MAX];
+ size_t len; /* length == 0 means unused buffer */
+ size_t cons; /* bytes written to console */
+ struct task_struct *owner; /* task of first print*/
+ u64 ts_nsec; /* time of first print */
+ u8 level; /* log level of first message */
+ u8 facility; /* log level of first message */
+ enum log_flags flags; /* prefix, newline flags */
+ bool flushed:1; /* buffer sealed and committed */
+} cont;
+
+static void cont_flush(enum log_flags flags)
+{
+ if (cont.flushed)
+ return;
+ if (cont.len == 0)
+ return;
+
+ if (cont.cons) {
+ /*
+ * If a fragment of this line was directly flushed to the
+ * console; wait for the console to pick up the rest of the
+ * line. LOG_NOCONS suppresses a duplicated output.
+ */
+ log_store(cont.facility, cont.level, flags | LOG_NOCONS,
+ cont.ts_nsec, NULL, 0, cont.buf, cont.len);
+ cont.flags = flags;
+ cont.flushed = true;
+ } else {
+ /*
+ * If no fragment of this line ever reached the console,
+ * just submit it to the store and free the buffer.
+ */
+ log_store(cont.facility, cont.level, flags, 0,
+ NULL, 0, cont.buf, cont.len);
+ cont.len = 0;
+ }
+}
+
+static bool cont_add(int facility, int level, const char *text, size_t len)
+{
+ if (cont.len && cont.flushed)
+ return false;
+
+ if (cont.len + len > sizeof(cont.buf)) {
+ /* the line gets too long, split it up in separate records */
+ cont_flush(LOG_CONT);
+ return false;
+ }
+
+ if (!cont.len) {
+ cont.facility = facility;
+ cont.level = level;
+ cont.owner = current;
+ cont.ts_nsec = local_clock();
+ cont.flags = 0;
+ cont.cons = 0;
+ cont.flushed = false;
+ }
+
+ memcpy(cont.buf + cont.len, text, len);
+ cont.len += len;
+
+ if (cont.len > (sizeof(cont.buf) * 80) / 100)
+ cont_flush(LOG_CONT);
+
+ return true;
+}
+
+static size_t cont_print_text(char *text, size_t size)
+{
+ size_t textlen = 0;
+ size_t len;
+
+ if (cont.cons == 0 && (console_prev & LOG_NEWLINE)) {
+ textlen += print_time(cont.ts_nsec, text);
+ size -= textlen;
+ }
+
+ len = cont.len - cont.cons;
+ if (len > 0) {
+ if (len+1 > size)
+ len = size-1;
+ memcpy(text + textlen, cont.buf + cont.cons, len);
+ textlen += len;
+ cont.cons = cont.len;
+ }
+
+ if (cont.flushed) {
+ if (cont.flags & LOG_NEWLINE)
+ text[textlen++] = '\n';
+ /* got everything, release buffer */
+ cont.len = 0;
+ }
+ return textlen;
+}
+
+asmlinkage int vprintk_emit(int facility, int level,
+ const char *dict, size_t dictlen,
+ const char *fmt, va_list args)
+{
+ static int recursion_bug;
+ static char textbuf[LOG_LINE_MAX];
+ char *text = textbuf;
+ size_t text_len;
+ enum log_flags lflags = 0;
+ unsigned long flags;
+ int this_cpu;
+ int printed_len = 0;
+
+ boot_delay_msec(level);
+ printk_delay();
+
+ /* This stops the holder of console_sem just where we want him */
+ local_irq_save(flags);
+ this_cpu = smp_processor_id();
+
+ /*
+ * Ouch, printk recursed into itself!
+ */
+ if (unlikely(logbuf_cpu == this_cpu)) {
+ /*
+ * If a crash is occurring during printk() on this CPU,
+ * then try to get the crash message out but make sure
+ * we can't deadlock. Otherwise just return to avoid the
+ * recursion and return - but flag the recursion so that
+ * it can be printed at the next appropriate moment:
+ */
+ if (!oops_in_progress && !lockdep_recursing(current)) {
+ recursion_bug = 1;
+ goto out_restore_irqs;
+ }
+ zap_locks();
+ }
+
+ lockdep_off();
+ raw_spin_lock(&logbuf_lock);
+ logbuf_cpu = this_cpu;
+
+ if (recursion_bug) {
+ static const char recursion_msg[] =
+ "BUG: recent printk recursion!";
+
+ recursion_bug = 0;
+ printed_len += strlen(recursion_msg);
+ /* emit KERN_CRIT message */
+ log_store(0, 2, LOG_PREFIX|LOG_NEWLINE, 0,
+ NULL, 0, recursion_msg, printed_len);
+ }
+
+ /*
+ * The printf needs to come first; we need the syslog
+ * prefix which might be passed-in as a parameter.
+ */
+ text_len = vscnprintf(text, sizeof(textbuf), fmt, args);
+
+ /* mark and strip a trailing newline */
+ if (text_len && text[text_len-1] == '\n') {
+ text_len--;
+ lflags |= LOG_NEWLINE;
+ }
+
+ /* strip kernel syslog prefix and extract log level or control flags */
+ if (facility == 0) {
+ int kern_level = printk_get_level(text);
+
+ if (kern_level) {
+ const char *end_of_header = printk_skip_level(text);
+ switch (kern_level) {
+ case '0' ... '7':
+ if (level == -1)
+ level = kern_level - '0';
+ case 'd': /* KERN_DEFAULT */
+ lflags |= LOG_PREFIX;
+ case 'c': /* KERN_CONT */
+ break;
+ }
+ text_len -= end_of_header - text;
+ text = (char *)end_of_header;
+ }
+ }
+
+ if (level == -1)
+ level = default_message_loglevel;
+
+ if (dict)
+ lflags |= LOG_PREFIX|LOG_NEWLINE;
+
+ if (!(lflags & LOG_NEWLINE)) {
+ /*
+ * Flush the conflicting buffer. An earlier newline was missing,
+ * or another task also prints continuation lines.
+ */
+ if (cont.len && (lflags & LOG_PREFIX || cont.owner != current))
+ cont_flush(LOG_NEWLINE);
+
+ /* buffer line if possible, otherwise store it right away */
+ if (!cont_add(facility, level, text, text_len))
+ log_store(facility, level, lflags | LOG_CONT, 0,
+ dict, dictlen, text, text_len);
+ } else {
+ bool stored = false;
+
+ /*
+ * If an earlier newline was missing and it was the same task,
+ * either merge it with the current buffer and flush, or if
+ * there was a race with interrupts (prefix == true) then just
+ * flush it out and store this line separately.
+ */
+ if (cont.len && cont.owner == current) {
+ if (!(lflags & LOG_PREFIX))
+ stored = cont_add(facility, level, text, text_len);
+ cont_flush(LOG_NEWLINE);
+ }
+
+ if (!stored)
+ log_store(facility, level, lflags, 0,
+ dict, dictlen, text, text_len);
+ }
+ printed_len += text_len;
+
+ /*
+ * Try to acquire and then immediately release the console semaphore.
+ * The release will print out buffers and wake up /dev/kmsg and syslog()
+ * users.
+ *
+ * The console_trylock_for_printk() function will release 'logbuf_lock'
+ * regardless of whether it actually gets the console semaphore or not.
+ */
+ if (console_trylock_for_printk(this_cpu))
+ console_unlock();
+
+ lockdep_on();
+out_restore_irqs:
+ local_irq_restore(flags);
+
+ return printed_len;
+}
+EXPORT_SYMBOL(vprintk_emit);
+
+asmlinkage int vprintk(const char *fmt, va_list args)
+{
+ return vprintk_emit(0, -1, NULL, 0, fmt, args);
+}
+EXPORT_SYMBOL(vprintk);
+
+asmlinkage int printk_emit(int facility, int level,
+ const char *dict, size_t dictlen,
+ const char *fmt, ...)
+{
+ va_list args;
+ int r;
+
+ va_start(args, fmt);
+ r = vprintk_emit(facility, level, dict, dictlen, fmt, args);
+ va_end(args);
+
+ return r;
+}
+EXPORT_SYMBOL(printk_emit);
+
+/**
+ * printk - print a kernel message
+ * @fmt: format string
+ *
+ * This is printk(). It can be called from any context. We want it to work.
+ *
+ * We try to grab the console_lock. If we succeed, it's easy - we log the
+ * output and call the console drivers. If we fail to get the semaphore, we
+ * place the output into the log buffer and return. The current holder of
+ * the console_sem will notice the new output in console_unlock(); and will
+ * send it to the consoles before releasing the lock.
+ *
+ * One effect of this deferred printing is that code which calls printk() and
+ * then changes console_loglevel may break. This is because console_loglevel
+ * is inspected when the actual printing occurs.
+ *
+ * See also:
+ * printf(3)
+ *
+ * See the vsnprintf() documentation for format string extensions over C99.
+ */
+asmlinkage int printk(const char *fmt, ...)
+{
+ va_list args;
+ int r;
+
+#ifdef CONFIG_KGDB_KDB
+ if (unlikely(kdb_trap_printk)) {
+ va_start(args, fmt);
+ r = vkdb_printf(fmt, args);
+ va_end(args);
+ return r;
+ }
+#endif
+ va_start(args, fmt);
+ r = vprintk_emit(0, -1, NULL, 0, fmt, args);
+ va_end(args);
+
+ return r;
+}
+EXPORT_SYMBOL(printk);
+
+#else /* CONFIG_PRINTK */
+
+#define LOG_LINE_MAX 0
+#define PREFIX_MAX 0
+#define LOG_LINE_MAX 0
+static u64 syslog_seq;
+static u32 syslog_idx;
+static u64 console_seq;
+static u32 console_idx;
+static enum log_flags syslog_prev;
+static u64 log_first_seq;
+static u32 log_first_idx;
+static u64 log_next_seq;
+static enum log_flags console_prev;
+static struct cont {
+ size_t len;
+ size_t cons;
+ u8 level;
+ bool flushed:1;
+} cont;
+static struct printk_log *log_from_idx(u32 idx) { return NULL; }
+static u32 log_next(u32 idx) { return 0; }
+static void call_console_drivers(int level, const char *text, size_t len) {}
+static size_t msg_print_text(const struct printk_log *msg, enum log_flags prev,
+ bool syslog, char *buf, size_t size) { return 0; }
+static size_t cont_print_text(char *text, size_t size) { return 0; }
+
+#endif /* CONFIG_PRINTK */
+
+#ifdef CONFIG_EARLY_PRINTK
+struct console *early_console;
+
+void early_vprintk(const char *fmt, va_list ap)
+{
+ if (early_console) {
+ char buf[512];
+ int n = vscnprintf(buf, sizeof(buf), fmt, ap);
+
+ early_console->write(early_console, buf, n);
+ }
+}
+
+asmlinkage void early_printk(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ early_vprintk(fmt, ap);
+ va_end(ap);
+}
+#endif
+
+static int __add_preferred_console(char *name, int idx, char *options,
+ char *brl_options)
+{
+ struct console_cmdline *c;
+ int i;
+
+ /*
+ * See if this tty is not yet registered, and
+ * if we have a slot free.
+ */
+ for (i = 0, c = console_cmdline;
+ i < MAX_CMDLINECONSOLES && c->name[0];
+ i++, c++) {
+ if (strcmp(c->name, name) == 0 && c->index == idx) {
+ if (!brl_options)
+ selected_console = i;
+ return 0;
+ }
+ }
+ if (i == MAX_CMDLINECONSOLES)
+ return -E2BIG;
+ if (!brl_options)
+ selected_console = i;
+ strlcpy(c->name, name, sizeof(c->name));
+ c->options = options;
+ braille_set_options(c, brl_options);
+
+ c->index = idx;
+ return 0;
+}
+/*
+ * Set up a list of consoles. Called from init/main.c
+ */
+static int __init console_setup(char *str)
+{
+ char buf[sizeof(console_cmdline[0].name) + 4]; /* 4 for index */
+ char *s, *options, *brl_options = NULL;
+ int idx;
+
+ if (_braille_console_setup(&str, &brl_options))
+ return 1;
+
+ /*
+ * Decode str into name, index, options.
+ */
+ if (str[0] >= '0' && str[0] <= '9') {
+ strcpy(buf, "ttyS");
+ strncpy(buf + 4, str, sizeof(buf) - 5);
+ } else {
+ strncpy(buf, str, sizeof(buf) - 1);
+ }
+ buf[sizeof(buf) - 1] = 0;
+ if ((options = strchr(str, ',')) != NULL)
+ *(options++) = 0;
+#ifdef __sparc__
+ if (!strcmp(str, "ttya"))
+ strcpy(buf, "ttyS0");
+ if (!strcmp(str, "ttyb"))
+ strcpy(buf, "ttyS1");
+#endif
+ for (s = buf; *s; s++)
+ if ((*s >= '0' && *s <= '9') || *s == ',')
+ break;
+ idx = simple_strtoul(s, NULL, 10);
+ *s = 0;
+
+ __add_preferred_console(buf, idx, options, brl_options);
+ console_set_on_cmdline = 1;
+ return 1;
+}
+__setup("console=", console_setup);
+
+/**
+ * add_preferred_console - add a device to the list of preferred consoles.
+ * @name: device name
+ * @idx: device index
+ * @options: options for this console
+ *
+ * The last preferred console added will be used for kernel messages
+ * and stdin/out/err for init. Normally this is used by console_setup
+ * above to handle user-supplied console arguments; however it can also
+ * be used by arch-specific code either to override the user or more
+ * commonly to provide a default console (ie from PROM variables) when
+ * the user has not supplied one.
+ */
+int add_preferred_console(char *name, int idx, char *options)
+{
+ return __add_preferred_console(name, idx, options, NULL);
+}
+
+int update_console_cmdline(char *name, int idx, char *name_new, int idx_new, char *options)
+{
+ struct console_cmdline *c;
+ int i;
+
+ for (i = 0, c = console_cmdline;
+ i < MAX_CMDLINECONSOLES && c->name[0];
+ i++, c++)
+ if (strcmp(c->name, name) == 0 && c->index == idx) {
+ strlcpy(c->name, name_new, sizeof(c->name));
+ c->name[sizeof(c->name) - 1] = 0;
+ c->options = options;
+ c->index = idx_new;
+ return i;
+ }
+ /* not found */
+ return -1;
+}
+
+bool console_suspend_enabled = 1;
+EXPORT_SYMBOL(console_suspend_enabled);
+
+static int __init console_suspend_disable(char *str)
+{
+ console_suspend_enabled = 0;
+ return 1;
+}
+__setup("no_console_suspend", console_suspend_disable);
+module_param_named(console_suspend, console_suspend_enabled,
+ bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(console_suspend, "suspend console during suspend"
+ " and hibernate operations");
+
+/**
+ * suspend_console - suspend the console subsystem
+ *
+ * This disables printk() while we go into suspend states
+ */
+void suspend_console(void)
+{
+ if (!console_suspend_enabled)
+ return;
+ printk("Suspending console(s) (use no_console_suspend to debug)\n");
+ console_lock();
+ console_suspended = 1;
+ up(&console_sem);
+}
+
+void resume_console(void)
+{
+ if (!console_suspend_enabled)
+ return;
+ down(&console_sem);
+ console_suspended = 0;
+ console_unlock();
+}
+
+/**
+ * console_cpu_notify - print deferred console messages after CPU hotplug
+ * @self: notifier struct
+ * @action: CPU hotplug event
+ * @hcpu: unused
+ *
+ * If printk() is called from a CPU that is not online yet, the messages
+ * will be spooled but will not show up on the console. This function is
+ * called when a new CPU comes online (or fails to come up), and ensures
+ * that any such output gets printed.
+ */
+static int console_cpu_notify(struct notifier_block *self,
+ unsigned long action, void *hcpu)
+{
+ switch (action) {
+ case CPU_ONLINE:
+ case CPU_DEAD:
+ case CPU_DOWN_FAILED:
+ case CPU_UP_CANCELED:
+ console_lock();
+ console_unlock();
+ }
+ return NOTIFY_OK;
+}
+
+/**
+ * console_lock - lock the console system for exclusive use.
+ *
+ * Acquires a lock which guarantees that the caller has
+ * exclusive access to the console system and the console_drivers list.
+ *
+ * Can sleep, returns nothing.
+ */
+void console_lock(void)
+{
+ might_sleep();
+
+ down(&console_sem);
+ if (console_suspended)
+ return;
+ console_locked = 1;
+ console_may_schedule = 1;
+ mutex_acquire(&console_lock_dep_map, 0, 0, _RET_IP_);
+}
+EXPORT_SYMBOL(console_lock);
+
+/**
+ * console_trylock - try to lock the console system for exclusive use.
+ *
+ * Tried to acquire a lock which guarantees that the caller has
+ * exclusive access to the console system and the console_drivers list.
+ *
+ * returns 1 on success, and 0 on failure to acquire the lock.
+ */
+int console_trylock(void)
+{
+ if (down_trylock(&console_sem))
+ return 0;
+ if (console_suspended) {
+ up(&console_sem);
+ return 0;
+ }
+ console_locked = 1;
+ console_may_schedule = 0;
+ mutex_acquire(&console_lock_dep_map, 0, 1, _RET_IP_);
+ return 1;
+}
+EXPORT_SYMBOL(console_trylock);
+
+int is_console_locked(void)
+{
+ return console_locked;
+}
+
+static void console_cont_flush(char *text, size_t size)
+{
+ unsigned long flags;
+ size_t len;
+
+ raw_spin_lock_irqsave(&logbuf_lock, flags);
+
+ if (!cont.len)
+ goto out;
+
+ /*
+ * We still queue earlier records, likely because the console was
+ * busy. The earlier ones need to be printed before this one, we
+ * did not flush any fragment so far, so just let it queue up.
+ */
+ if (console_seq < log_next_seq && !cont.cons)
+ goto out;
+
+ len = cont_print_text(text, size);
+ raw_spin_unlock(&logbuf_lock);
+ stop_critical_timings();
+ call_console_drivers(cont.level, text, len);
+ start_critical_timings();
+ local_irq_restore(flags);
+ return;
+out:
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+}
+
+/**
+ * console_unlock - unlock the console system
+ *
+ * Releases the console_lock which the caller holds on the console system
+ * and the console driver list.
+ *
+ * While the console_lock was held, console output may have been buffered
+ * by printk(). If this is the case, console_unlock(); emits
+ * the output prior to releasing the lock.
+ *
+ * If there is output waiting, we wake /dev/kmsg and syslog() users.
+ *
+ * console_unlock(); may be called from any context.
+ */
+void console_unlock(void)
+{
+ static char text[LOG_LINE_MAX + PREFIX_MAX];
+ static u64 seen_seq;
+ unsigned long flags;
+ bool wake_klogd = false;
+ bool retry;
+
+ if (console_suspended) {
+ up(&console_sem);
+ return;
+ }
+
+ console_may_schedule = 0;
+
+ /* flush buffered message fragment immediately to console */
+ console_cont_flush(text, sizeof(text));
+again:
+ for (;;) {
+ struct printk_log *msg;
+ size_t len;
+ int level;
+
+ raw_spin_lock_irqsave(&logbuf_lock, flags);
+ if (seen_seq != log_next_seq) {
+ wake_klogd = true;
+ seen_seq = log_next_seq;
+ }
+
+ if (console_seq < log_first_seq) {
+ /* messages are gone, move to first one */
+ console_seq = log_first_seq;
+ console_idx = log_first_idx;
+ console_prev = 0;
+ }
+skip:
+ if (console_seq == log_next_seq)
+ break;
+
+ msg = log_from_idx(console_idx);
+ if (msg->flags & LOG_NOCONS) {
+ /*
+ * Skip record we have buffered and already printed
+ * directly to the console when we received it.
+ */
+ console_idx = log_next(console_idx);
+ console_seq++;
+ /*
+ * We will get here again when we register a new
+ * CON_PRINTBUFFER console. Clear the flag so we
+ * will properly dump everything later.
+ */
+ msg->flags &= ~LOG_NOCONS;
+ console_prev = msg->flags;
+ goto skip;
+ }
+
+ level = msg->level;
+ len = msg_print_text(msg, console_prev, false,
+ text, sizeof(text));
+ console_idx = log_next(console_idx);
+ console_seq++;
+ console_prev = msg->flags;
+ raw_spin_unlock(&logbuf_lock);
+
+ stop_critical_timings(); /* don't trace print latency */
+ call_console_drivers(level, text, len);
+ start_critical_timings();
+ local_irq_restore(flags);
+ }
+ console_locked = 0;
+ mutex_release(&console_lock_dep_map, 1, _RET_IP_);
+
+ /* Release the exclusive_console once it is used */
+ if (unlikely(exclusive_console))
+ exclusive_console = NULL;
+
+ raw_spin_unlock(&logbuf_lock);
+
+ up(&console_sem);
+
+ /*
+ * Someone could have filled up the buffer again, so re-check if there's
+ * something to flush. In case we cannot trylock the console_sem again,
+ * there's a new owner and the console_unlock() from them will do the
+ * flush, no worries.
+ */
+ raw_spin_lock(&logbuf_lock);
+ retry = console_seq != log_next_seq;
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+
+ if (retry && console_trylock())
+ goto again;
+
+ if (wake_klogd)
+ wake_up_klogd();
+}
+EXPORT_SYMBOL(console_unlock);
+
+/**
+ * console_conditional_schedule - yield the CPU if required
+ *
+ * If the console code is currently allowed to sleep, and
+ * if this CPU should yield the CPU to another task, do
+ * so here.
+ *
+ * Must be called within console_lock();.
+ */
+void __sched console_conditional_schedule(void)
+{
+ if (console_may_schedule)
+ cond_resched();
+}
+EXPORT_SYMBOL(console_conditional_schedule);
+
+void console_unblank(void)
+{
+ struct console *c;
+
+ /*
+ * console_unblank can no longer be called in interrupt context unless
+ * oops_in_progress is set to 1..
+ */
+ if (oops_in_progress) {
+ if (down_trylock(&console_sem) != 0)
+ return;
+ } else
+ console_lock();
+
+ console_locked = 1;
+ console_may_schedule = 0;
+ for_each_console(c)
+ if ((c->flags & CON_ENABLED) && c->unblank)
+ c->unblank();
+ console_unlock();
+}
+
+/*
+ * Return the console tty driver structure and its associated index
+ */
+struct tty_driver *console_device(int *index)
+{
+ struct console *c;
+ struct tty_driver *driver = NULL;
+
+ console_lock();
+ for_each_console(c) {
+ if (!c->device)
+ continue;
+ driver = c->device(c, index);
+ if (driver)
+ break;
+ }
+ console_unlock();
+ return driver;
+}
+
+/*
+ * Prevent further output on the passed console device so that (for example)
+ * serial drivers can disable console output before suspending a port, and can
+ * re-enable output afterwards.
+ */
+void console_stop(struct console *console)
+{
+ console_lock();
+ console->flags &= ~CON_ENABLED;
+ console_unlock();
+}
+EXPORT_SYMBOL(console_stop);
+
+void console_start(struct console *console)
+{
+ console_lock();
+ console->flags |= CON_ENABLED;
+ console_unlock();
+}
+EXPORT_SYMBOL(console_start);
+
+static int __read_mostly keep_bootcon;
+
+static int __init keep_bootcon_setup(char *str)
+{
+ keep_bootcon = 1;
+ printk(KERN_INFO "debug: skip boot console de-registration.\n");
+
+ return 0;
+}
+
+early_param("keep_bootcon", keep_bootcon_setup);
+
+/*
+ * The console driver calls this routine during kernel initialization
+ * to register the console printing procedure with printk() and to
+ * print any messages that were printed by the kernel before the
+ * console driver was initialized.
+ *
+ * This can happen pretty early during the boot process (because of
+ * early_printk) - sometimes before setup_arch() completes - be careful
+ * of what kernel features are used - they may not be initialised yet.
+ *
+ * There are two types of consoles - bootconsoles (early_printk) and
+ * "real" consoles (everything which is not a bootconsole) which are
+ * handled differently.
+ * - Any number of bootconsoles can be registered at any time.
+ * - As soon as a "real" console is registered, all bootconsoles
+ * will be unregistered automatically.
+ * - Once a "real" console is registered, any attempt to register a
+ * bootconsoles will be rejected
+ */
+void register_console(struct console *newcon)
+{
+ int i;
+ unsigned long flags;
+ struct console *bcon = NULL;
+ struct console_cmdline *c;
+
+ if (console_drivers)
+ for_each_console(bcon)
+ if (WARN(bcon == newcon,
+ "console '%s%d' already registered\n",
+ bcon->name, bcon->index))
+ return;
+
+ /*
+ * before we register a new CON_BOOT console, make sure we don't
+ * already have a valid console
+ */
+ if (console_drivers && newcon->flags & CON_BOOT) {
+ /* find the last or real console */
+ for_each_console(bcon) {
+ if (!(bcon->flags & CON_BOOT)) {
+ printk(KERN_INFO "Too late to register bootconsole %s%d\n",
+ newcon->name, newcon->index);
+ return;
+ }
+ }
+ }
+
+ if (console_drivers && console_drivers->flags & CON_BOOT)
+ bcon = console_drivers;
+
+ if (preferred_console < 0 || bcon || !console_drivers)
+ preferred_console = selected_console;
+
+ if (newcon->early_setup)
+ newcon->early_setup();
+
+ /*
+ * See if we want to use this console driver. If we
+ * didn't select a console we take the first one
+ * that registers here.
+ */
+ if (preferred_console < 0) {
+ if (newcon->index < 0)
+ newcon->index = 0;
+ if (newcon->setup == NULL ||
+ newcon->setup(newcon, NULL) == 0) {
+ newcon->flags |= CON_ENABLED;
+ if (newcon->device) {
+ newcon->flags |= CON_CONSDEV;
+ preferred_console = 0;
+ }
+ }
+ }
+
+ /*
+ * See if this console matches one we selected on
+ * the command line.
+ */
+ for (i = 0, c = console_cmdline;
+ i < MAX_CMDLINECONSOLES && c->name[0];
+ i++, c++) {
+ if (strcmp(c->name, newcon->name) != 0)
+ continue;
+ if (newcon->index >= 0 &&
+ newcon->index != c->index)
+ continue;
+ if (newcon->index < 0)
+ newcon->index = c->index;
+
+ if (_braille_register_console(newcon, c))
+ return;
+
+ if (newcon->setup &&
+ newcon->setup(newcon, console_cmdline[i].options) != 0)
+ break;
+ newcon->flags |= CON_ENABLED;
+ newcon->index = c->index;
+ if (i == selected_console) {
+ newcon->flags |= CON_CONSDEV;
+ preferred_console = selected_console;
+ }
+ break;
+ }
+
+ if (!(newcon->flags & CON_ENABLED))
+ return;
+
+ /*
+ * If we have a bootconsole, and are switching to a real console,
+ * don't print everything out again, since when the boot console, and
+ * the real console are the same physical device, it's annoying to
+ * see the beginning boot messages twice
+ */
+ if (bcon && ((newcon->flags & (CON_CONSDEV | CON_BOOT)) == CON_CONSDEV))
+ newcon->flags &= ~CON_PRINTBUFFER;
+
+ /*
+ * Put this console in the list - keep the
+ * preferred driver at the head of the list.
+ */
+ console_lock();
+ if ((newcon->flags & CON_CONSDEV) || console_drivers == NULL) {
+ newcon->next = console_drivers;
+ console_drivers = newcon;
+ if (newcon->next)
+ newcon->next->flags &= ~CON_CONSDEV;
+ } else {
+ newcon->next = console_drivers->next;
+ console_drivers->next = newcon;
+ }
+ if (newcon->flags & CON_PRINTBUFFER) {
+ /*
+ * console_unlock(); will print out the buffered messages
+ * for us.
+ */
+ raw_spin_lock_irqsave(&logbuf_lock, flags);
+ console_seq = syslog_seq;
+ console_idx = syslog_idx;
+ console_prev = syslog_prev;
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+ /*
+ * We're about to replay the log buffer. Only do this to the
+ * just-registered console to avoid excessive message spam to
+ * the already-registered consoles.
+ */
+ exclusive_console = newcon;
+ }
+ console_unlock();
+ console_sysfs_notify();
+
+ /*
+ * By unregistering the bootconsoles after we enable the real console
+ * we get the "console xxx enabled" message on all the consoles -
+ * boot consoles, real consoles, etc - this is to ensure that end
+ * users know there might be something in the kernel's log buffer that
+ * went to the bootconsole (that they do not see on the real console)
+ */
+ if (bcon &&
+ ((newcon->flags & (CON_CONSDEV | CON_BOOT)) == CON_CONSDEV) &&
+ !keep_bootcon) {
+ /* we need to iterate through twice, to make sure we print
+ * everything out, before we unregister the console(s)
+ */
+ printk(KERN_INFO "console [%s%d] enabled, bootconsole disabled\n",
+ newcon->name, newcon->index);
+ for_each_console(bcon)
+ if (bcon->flags & CON_BOOT)
+ unregister_console(bcon);
+ } else {
+ printk(KERN_INFO "%sconsole [%s%d] enabled\n",
+ (newcon->flags & CON_BOOT) ? "boot" : "" ,
+ newcon->name, newcon->index);
+ }
+}
+EXPORT_SYMBOL(register_console);
+
+int unregister_console(struct console *console)
+{
+ struct console *a, *b;
+ int res;
+
+ res = _braille_unregister_console(console);
+ if (res)
+ return res;
+
+ res = 1;
+ console_lock();
+ if (console_drivers == console) {
+ console_drivers=console->next;
+ res = 0;
+ } else if (console_drivers) {
+ for (a=console_drivers->next, b=console_drivers ;
+ a; b=a, a=b->next) {
+ if (a == console) {
+ b->next = a->next;
+ res = 0;
+ break;
+ }
+ }
+ }
+
+ /*
+ * If this isn't the last console and it has CON_CONSDEV set, we
+ * need to set it on the next preferred console.
+ */
+ if (console_drivers != NULL && console->flags & CON_CONSDEV)
+ console_drivers->flags |= CON_CONSDEV;
+
+ console_unlock();
+ console_sysfs_notify();
+ return res;
+}
+EXPORT_SYMBOL(unregister_console);
+
+static int __init printk_late_init(void)
+{
+ struct console *con;
+
+ for_each_console(con) {
+ if (!keep_bootcon && con->flags & CON_BOOT) {
+ printk(KERN_INFO "turn off boot console %s%d\n",
+ con->name, con->index);
+ unregister_console(con);
+ }
+ }
+ hotcpu_notifier(console_cpu_notify, 0);
+ return 0;
+}
+late_initcall(printk_late_init);
+
+#if defined CONFIG_PRINTK
+/*
+ * Delayed printk version, for scheduler-internal messages:
+ */
+#define PRINTK_BUF_SIZE 512
+
+#define PRINTK_PENDING_WAKEUP 0x01
+#define PRINTK_PENDING_SCHED 0x02
+
+static DEFINE_PER_CPU(int, printk_pending);
+static DEFINE_PER_CPU(char [PRINTK_BUF_SIZE], printk_sched_buf);
+
+static void wake_up_klogd_work_func(struct irq_work *irq_work)
+{
+ int pending = __this_cpu_xchg(printk_pending, 0);
+
+ if (pending & PRINTK_PENDING_SCHED) {
+ char *buf = __get_cpu_var(printk_sched_buf);
+ printk(KERN_WARNING "[sched_delayed] %s", buf);
+ }
+
+ if (pending & PRINTK_PENDING_WAKEUP)
+ wake_up_interruptible(&log_wait);
+}
+
+static DEFINE_PER_CPU(struct irq_work, wake_up_klogd_work) = {
+ .func = wake_up_klogd_work_func,
+ .flags = IRQ_WORK_LAZY,
+};
+
+void wake_up_klogd(void)
+{
+ preempt_disable();
+ if (waitqueue_active(&log_wait)) {
+ this_cpu_or(printk_pending, PRINTK_PENDING_WAKEUP);
+ irq_work_queue(&__get_cpu_var(wake_up_klogd_work));
+ }
+ preempt_enable();
+}
+
+int printk_sched(const char *fmt, ...)
+{
+ unsigned long flags;
+ va_list args;
+ char *buf;
+ int r;
+
+ local_irq_save(flags);
+ buf = __get_cpu_var(printk_sched_buf);
+
+ va_start(args, fmt);
+ r = vsnprintf(buf, PRINTK_BUF_SIZE, fmt, args);
+ va_end(args);
+
+ __this_cpu_or(printk_pending, PRINTK_PENDING_SCHED);
+ irq_work_queue(&__get_cpu_var(wake_up_klogd_work));
+ local_irq_restore(flags);
+
+ return r;
+}
+
+/*
+ * printk rate limiting, lifted from the networking subsystem.
+ *
+ * This enforces a rate limit: not more than 10 kernel messages
+ * every 5s to make a denial-of-service attack impossible.
+ */
+DEFINE_RATELIMIT_STATE(printk_ratelimit_state, 5 * HZ, 10);
+
+int __printk_ratelimit(const char *func)
+{
+ return ___ratelimit(&printk_ratelimit_state, func);
+}
+EXPORT_SYMBOL(__printk_ratelimit);
+
+/**
+ * printk_timed_ratelimit - caller-controlled printk ratelimiting
+ * @caller_jiffies: pointer to caller's state
+ * @interval_msecs: minimum interval between prints
+ *
+ * printk_timed_ratelimit() returns true if more than @interval_msecs
+ * milliseconds have elapsed since the last time printk_timed_ratelimit()
+ * returned true.
+ */
+bool printk_timed_ratelimit(unsigned long *caller_jiffies,
+ unsigned int interval_msecs)
+{
+ if (*caller_jiffies == 0
+ || !time_in_range(jiffies, *caller_jiffies,
+ *caller_jiffies
+ + msecs_to_jiffies(interval_msecs))) {
+ *caller_jiffies = jiffies;
+ return true;
+ }
+ return false;
+}
+EXPORT_SYMBOL(printk_timed_ratelimit);
+
+static DEFINE_SPINLOCK(dump_list_lock);
+static LIST_HEAD(dump_list);
+
+/**
+ * kmsg_dump_register - register a kernel log dumper.
+ * @dumper: pointer to the kmsg_dumper structure
+ *
+ * Adds a kernel log dumper to the system. The dump callback in the
+ * structure will be called when the kernel oopses or panics and must be
+ * set. Returns zero on success and %-EINVAL or %-EBUSY otherwise.
+ */
+int kmsg_dump_register(struct kmsg_dumper *dumper)
+{
+ unsigned long flags;
+ int err = -EBUSY;
+
+ /* The dump callback needs to be set */
+ if (!dumper->dump)
+ return -EINVAL;
+
+ spin_lock_irqsave(&dump_list_lock, flags);
+ /* Don't allow registering multiple times */
+ if (!dumper->registered) {
+ dumper->registered = 1;
+ list_add_tail_rcu(&dumper->list, &dump_list);
+ err = 0;
+ }
+ spin_unlock_irqrestore(&dump_list_lock, flags);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(kmsg_dump_register);
+
+/**
+ * kmsg_dump_unregister - unregister a kmsg dumper.
+ * @dumper: pointer to the kmsg_dumper structure
+ *
+ * Removes a dump device from the system. Returns zero on success and
+ * %-EINVAL otherwise.
+ */
+int kmsg_dump_unregister(struct kmsg_dumper *dumper)
+{
+ unsigned long flags;
+ int err = -EINVAL;
+
+ spin_lock_irqsave(&dump_list_lock, flags);
+ if (dumper->registered) {
+ dumper->registered = 0;
+ list_del_rcu(&dumper->list);
+ err = 0;
+ }
+ spin_unlock_irqrestore(&dump_list_lock, flags);
+ synchronize_rcu();
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(kmsg_dump_unregister);
+
+static bool always_kmsg_dump;
+module_param_named(always_kmsg_dump, always_kmsg_dump, bool, S_IRUGO | S_IWUSR);
+
+/**
+ * kmsg_dump - dump kernel log to kernel message dumpers.
+ * @reason: the reason (oops, panic etc) for dumping
+ *
+ * Call each of the registered dumper's dump() callback, which can
+ * retrieve the kmsg records with kmsg_dump_get_line() or
+ * kmsg_dump_get_buffer().
+ */
+void kmsg_dump(enum kmsg_dump_reason reason)
+{
+ struct kmsg_dumper *dumper;
+ unsigned long flags;
+
+ if ((reason > KMSG_DUMP_OOPS) && !always_kmsg_dump)
+ return;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(dumper, &dump_list, list) {
+ if (dumper->max_reason && reason > dumper->max_reason)
+ continue;
+
+ /* initialize iterator with data about the stored records */
+ dumper->active = true;
+
+ raw_spin_lock_irqsave(&logbuf_lock, flags);
+ dumper->cur_seq = clear_seq;
+ dumper->cur_idx = clear_idx;
+ dumper->next_seq = log_next_seq;
+ dumper->next_idx = log_next_idx;
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+
+ /* invoke dumper which will iterate over records */
+ dumper->dump(dumper, reason);
+
+ /* reset iterator */
+ dumper->active = false;
+ }
+ rcu_read_unlock();
+}
+
+/**
+ * kmsg_dump_get_line_nolock - retrieve one kmsg log line (unlocked version)
+ * @dumper: registered kmsg dumper
+ * @syslog: include the "<4>" prefixes
+ * @line: buffer to copy the line to
+ * @size: maximum size of the buffer
+ * @len: length of line placed into buffer
+ *
+ * Start at the beginning of the kmsg buffer, with the oldest kmsg
+ * record, and copy one record into the provided buffer.
+ *
+ * Consecutive calls will return the next available record moving
+ * towards the end of the buffer with the youngest messages.
+ *
+ * A return value of FALSE indicates that there are no more records to
+ * read.
+ *
+ * The function is similar to kmsg_dump_get_line(), but grabs no locks.
+ */
+bool kmsg_dump_get_line_nolock(struct kmsg_dumper *dumper, bool syslog,
+ char *line, size_t size, size_t *len)
+{
+ struct printk_log *msg;
+ size_t l = 0;
+ bool ret = false;
+
+ if (!dumper->active)
+ goto out;
+
+ if (dumper->cur_seq < log_first_seq) {
+ /* messages are gone, move to first available one */
+ dumper->cur_seq = log_first_seq;
+ dumper->cur_idx = log_first_idx;
+ }
+
+ /* last entry */
+ if (dumper->cur_seq >= log_next_seq)
+ goto out;
+
+ msg = log_from_idx(dumper->cur_idx);
+ l = msg_print_text(msg, 0, syslog, line, size);
+
+ dumper->cur_idx = log_next(dumper->cur_idx);
+ dumper->cur_seq++;
+ ret = true;
+out:
+ if (len)
+ *len = l;
+ return ret;
+}
+
+/**
+ * kmsg_dump_get_line - retrieve one kmsg log line
+ * @dumper: registered kmsg dumper
+ * @syslog: include the "<4>" prefixes
+ * @line: buffer to copy the line to
+ * @size: maximum size of the buffer
+ * @len: length of line placed into buffer
+ *
+ * Start at the beginning of the kmsg buffer, with the oldest kmsg
+ * record, and copy one record into the provided buffer.
+ *
+ * Consecutive calls will return the next available record moving
+ * towards the end of the buffer with the youngest messages.
+ *
+ * A return value of FALSE indicates that there are no more records to
+ * read.
+ */
+bool kmsg_dump_get_line(struct kmsg_dumper *dumper, bool syslog,
+ char *line, size_t size, size_t *len)
+{
+ unsigned long flags;
+ bool ret;
+
+ raw_spin_lock_irqsave(&logbuf_lock, flags);
+ ret = kmsg_dump_get_line_nolock(dumper, syslog, line, size, len);
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(kmsg_dump_get_line);
+
+/**
+ * kmsg_dump_get_buffer - copy kmsg log lines
+ * @dumper: registered kmsg dumper
+ * @syslog: include the "<4>" prefixes
+ * @buf: buffer to copy the line to
+ * @size: maximum size of the buffer
+ * @len: length of line placed into buffer
+ *
+ * Start at the end of the kmsg buffer and fill the provided buffer
+ * with as many of the the *youngest* kmsg records that fit into it.
+ * If the buffer is large enough, all available kmsg records will be
+ * copied with a single call.
+ *
+ * Consecutive calls will fill the buffer with the next block of
+ * available older records, not including the earlier retrieved ones.
+ *
+ * A return value of FALSE indicates that there are no more records to
+ * read.
+ */
+bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog,
+ char *buf, size_t size, size_t *len)
+{
+ unsigned long flags;
+ u64 seq;
+ u32 idx;
+ u64 next_seq;
+ u32 next_idx;
+ enum log_flags prev;
+ size_t l = 0;
+ bool ret = false;
+
+ if (!dumper->active)
+ goto out;
+
+ raw_spin_lock_irqsave(&logbuf_lock, flags);
+ if (dumper->cur_seq < log_first_seq) {
+ /* messages are gone, move to first available one */
+ dumper->cur_seq = log_first_seq;
+ dumper->cur_idx = log_first_idx;
+ }
+
+ /* last entry */
+ if (dumper->cur_seq >= dumper->next_seq) {
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+ goto out;
+ }
+
+ /* calculate length of entire buffer */
+ seq = dumper->cur_seq;
+ idx = dumper->cur_idx;
+ prev = 0;
+ while (seq < dumper->next_seq) {
+ struct printk_log *msg = log_from_idx(idx);
+
+ l += msg_print_text(msg, prev, true, NULL, 0);
+ idx = log_next(idx);
+ seq++;
+ prev = msg->flags;
+ }
+
+ /* move first record forward until length fits into the buffer */
+ seq = dumper->cur_seq;
+ idx = dumper->cur_idx;
+ prev = 0;
+ while (l > size && seq < dumper->next_seq) {
+ struct printk_log *msg = log_from_idx(idx);
+
+ l -= msg_print_text(msg, prev, true, NULL, 0);
+ idx = log_next(idx);
+ seq++;
+ prev = msg->flags;
+ }
+
+ /* last message in next interation */
+ next_seq = seq;
+ next_idx = idx;
+
+ l = 0;
+ prev = 0;
+ while (seq < dumper->next_seq) {
+ struct printk_log *msg = log_from_idx(idx);
+
+ l += msg_print_text(msg, prev, syslog, buf + l, size - l);
+ idx = log_next(idx);
+ seq++;
+ prev = msg->flags;
+ }
+
+ dumper->next_seq = next_seq;
+ dumper->next_idx = next_idx;
+ ret = true;
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+out:
+ if (len)
+ *len = l;
+ return ret;
+}
+EXPORT_SYMBOL_GPL(kmsg_dump_get_buffer);
+
+/**
+ * kmsg_dump_rewind_nolock - reset the interator (unlocked version)
+ * @dumper: registered kmsg dumper
+ *
+ * Reset the dumper's iterator so that kmsg_dump_get_line() and
+ * kmsg_dump_get_buffer() can be called again and used multiple
+ * times within the same dumper.dump() callback.
+ *
+ * The function is similar to kmsg_dump_rewind(), but grabs no locks.
+ */
+void kmsg_dump_rewind_nolock(struct kmsg_dumper *dumper)
+{
+ dumper->cur_seq = clear_seq;
+ dumper->cur_idx = clear_idx;
+ dumper->next_seq = log_next_seq;
+ dumper->next_idx = log_next_idx;
+}
+
+/**
+ * kmsg_dump_rewind - reset the interator
+ * @dumper: registered kmsg dumper
+ *
+ * Reset the dumper's iterator so that kmsg_dump_get_line() and
+ * kmsg_dump_get_buffer() can be called again and used multiple
+ * times within the same dumper.dump() callback.
+ */
+void kmsg_dump_rewind(struct kmsg_dumper *dumper)
+{
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&logbuf_lock, flags);
+ kmsg_dump_rewind_nolock(dumper);
+ raw_spin_unlock_irqrestore(&logbuf_lock, flags);
+}
+EXPORT_SYMBOL_GPL(kmsg_dump_rewind);
+
+static char dump_stack_arch_desc_str[128];
+
+/**
+ * dump_stack_set_arch_desc - set arch-specific str to show with task dumps
+ * @fmt: printf-style format string
+ * @...: arguments for the format string
+ *
+ * The configured string will be printed right after utsname during task
+ * dumps. Usually used to add arch-specific system identifiers. If an
+ * arch wants to make use of such an ID string, it should initialize this
+ * as soon as possible during boot.
+ */
+void __init dump_stack_set_arch_desc(const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ vsnprintf(dump_stack_arch_desc_str, sizeof(dump_stack_arch_desc_str),
+ fmt, args);
+ va_end(args);
+}
+
+/**
+ * dump_stack_print_info - print generic debug info for dump_stack()
+ * @log_lvl: log level
+ *
+ * Arch-specific dump_stack() implementations can use this function to
+ * print out the same debug information as the generic dump_stack().
+ */
+void dump_stack_print_info(const char *log_lvl)
+{
+ printk("%sCPU: %d PID: %d Comm: %.20s %s %s %.*s\n",
+ log_lvl, raw_smp_processor_id(), current->pid, current->comm,
+ print_tainted(), init_utsname()->release,
+ (int)strcspn(init_utsname()->version, " "),
+ init_utsname()->version);
+
+ if (dump_stack_arch_desc_str[0] != '\0')
+ printk("%sHardware name: %s\n",
+ log_lvl, dump_stack_arch_desc_str);
+
+ print_worker_info(log_lvl, current);
+}
+
+/**
+ * show_regs_print_info - print generic debug info for show_regs()
+ * @log_lvl: log level
+ *
+ * show_regs() implementations can use this function to print out generic
+ * debug information.
+ */
+void show_regs_print_info(const char *log_lvl)
+{
+ dump_stack_print_info(log_lvl);
+
+ printk("%stask: %p ti: %p task.ti: %p\n",
+ log_lvl, current, current_thread_info(),
+ task_thread_info(current));
+}
+
+#endif
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the drm-intel tree
2013-09-30 11:26 linux-next: manual merge of the bcon tree Thierry Reding
@ 2013-09-30 11:26 ` Thierry Reding
0 siblings, 0 replies; 23+ messages in thread
From: Thierry Reding @ 2013-09-30 11:26 UTC (permalink / raw)
To: Daniel Vetter; +Cc: intel-gfx, dri-devel, linux-next, linux-kernel
Today's linux-next merge of the drm-intel tree got conflicts in
drivers/gpu/drm/i915/intel_display.c
I fixed it up (see below). Please check if the resolution looks correct.
Thanks,
Thierry
---
diff --cc drivers/gpu/drm/i915/intel_display.c
index e5822e7,cbbdab6..76870f0
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@@ -4775,21 -4882,8 +4882,12 @@@ static void i9xx_set_pipeconf(struct in
pipeconf = 0;
+ if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
+ I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE)
+ pipeconf |= PIPECONF_ENABLE;
+
- if (intel_crtc->pipe == 0 && INTEL_INFO(dev)->gen < 4) {
- /* Enable pixel doubling when the dot clock is > 90% of the (display)
- * core speed.
- *
- * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
- * pipe == 0 check?
- */
- if (intel_crtc->config.requested_mode.clock >
- dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
- pipeconf |= PIPECONF_DOUBLE_WIDE;
- }
+ if (intel_crtc->config.double_wide)
+ pipeconf |= PIPECONF_DOUBLE_WIDE;
/* only g4x and later have fancy bpc/dither controls */
if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
^ permalink raw reply [flat|nested] 23+ messages in thread
* linux-next: manual merge of the drm-intel tree
@ 2013-09-30 11:26 ` Thierry Reding
0 siblings, 0 replies; 23+ messages in thread
From: Thierry Reding @ 2013-09-30 11:26 UTC (permalink / raw)
To: Daniel Vetter; +Cc: intel-gfx, linux-next, linux-kernel, dri-devel
Today's linux-next merge of the drm-intel tree got conflicts in
drivers/gpu/drm/i915/intel_display.c
I fixed it up (see below). Please check if the resolution looks correct.
Thanks,
Thierry
---
diff --cc drivers/gpu/drm/i915/intel_display.c
index e5822e7,cbbdab6..76870f0
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@@ -4775,21 -4882,8 +4882,12 @@@ static void i9xx_set_pipeconf(struct in
pipeconf = 0;
+ if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
+ I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE)
+ pipeconf |= PIPECONF_ENABLE;
+
- if (intel_crtc->pipe == 0 && INTEL_INFO(dev)->gen < 4) {
- /* Enable pixel doubling when the dot clock is > 90% of the (display)
- * core speed.
- *
- * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
- * pipe == 0 check?
- */
- if (intel_crtc->config.requested_mode.clock >
- dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
- pipeconf |= PIPECONF_DOUBLE_WIDE;
- }
+ if (intel_crtc->config.double_wide)
+ pipeconf |= PIPECONF_DOUBLE_WIDE;
/* only g4x and later have fancy bpc/dither controls */
if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: linux-next: manual merge of the drm-intel tree
2013-09-30 11:26 ` Thierry Reding
(?)
@ 2013-09-30 11:32 ` Daniel Vetter
-1 siblings, 0 replies; 23+ messages in thread
From: Daniel Vetter @ 2013-09-30 11:32 UTC (permalink / raw)
To: Thierry Reding
Cc: intel-gfx, linux-next, Linux Kernel Mailing List, dri-devel
On Mon, Sep 30, 2013 at 1:26 PM, Thierry Reding
<thierry.reding@gmail.com> wrote:
> Today's linux-next merge of the drm-intel tree got conflicts in
>
> drivers/gpu/drm/i915/intel_display.c
>
> I fixed it up (see below). Please check if the resolution looks correct.
Looks good.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 23+ messages in thread
end of thread, other threads:[~2013-10-14 14:51 UTC | newest]
Thread overview: 23+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-10-09 14:14 linux-next: Tree for Oct 9 Thierry Reding
2013-10-09 14:14 ` [PATCH] ipv6: Unbreak build Thierry Reding
2013-10-09 14:41 ` Eric Dumazet
2013-10-10 10:48 ` Thierry Reding
2013-10-09 14:14 ` linux-next: manual merge of the clk tree Thierry Reding
2013-10-09 14:14 ` linux-next: manual merge of the drm-intel tree Thierry Reding
2013-10-09 14:14 ` linux-next: manual merge of the imx-mxs tree Thierry Reding
2013-10-09 16:56 ` Fabio Estevam
2013-10-09 14:14 ` linux-next: manual merge of the mvebu tree Thierry Reding
2013-10-09 14:21 ` Jason Cooper
2013-10-09 14:37 ` Jason Cooper
2013-10-10 10:57 ` Thierry Reding
2013-10-10 11:40 ` Jason Cooper
2013-10-09 15:29 ` linux-next: Tree for Oct 9 Guenter Roeck
2013-10-09 15:44 ` Guenter Roeck
2013-10-09 17:55 ` Guenter Roeck
-- strict thread matches above, loose matches on Subject: below --
2013-10-14 14:48 linux-next: Tree for Oct 14 Thierry Reding
2013-10-14 14:48 ` linux-next: manual merge of the drm-intel tree Thierry Reding
2013-10-10 16:51 Mark Brown
2013-10-10 16:51 ` Mark Brown
2013-10-07 15:18 linux-next: Tree for Oct 7 Thierry Reding
2013-10-07 15:18 ` linux-next: manual merge of the drm-intel tree Thierry Reding
2013-09-30 11:26 linux-next: manual merge of the bcon tree Thierry Reding
2013-09-30 11:26 ` linux-next: manual merge of the drm-intel tree Thierry Reding
2013-09-30 11:26 ` Thierry Reding
2013-09-30 11:32 ` Daniel Vetter
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.