From 5a0e3ad6af8660be21ca98a971cd00f331318c05 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 24 Mar 2010 17:04:11 +0900 Subject: include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn --- drivers/isdn/mISDN/clock.c | 1 + drivers/isdn/mISDN/core.c | 1 + drivers/isdn/mISDN/dsp_cmx.c | 1 + drivers/isdn/mISDN/dsp_core.c | 1 + drivers/isdn/mISDN/dsp_pipeline.c | 1 + drivers/isdn/mISDN/dsp_tones.c | 1 + drivers/isdn/mISDN/hwchannel.c | 1 + drivers/isdn/mISDN/l1oip_core.c | 1 + drivers/isdn/mISDN/layer1.c | 1 + drivers/isdn/mISDN/layer2.c | 1 + drivers/isdn/mISDN/socket.c | 1 + drivers/isdn/mISDN/stack.c | 1 + drivers/isdn/mISDN/tei.c | 1 + drivers/isdn/mISDN/timerdev.c | 1 + 14 files changed, 14 insertions(+) (limited to 'drivers/isdn/mISDN') diff --git a/drivers/isdn/mISDN/clock.c b/drivers/isdn/mISDN/clock.c index f1bbc88763b2..1fa629b3b940 100644 --- a/drivers/isdn/mISDN/clock.c +++ b/drivers/isdn/mISDN/clock.c @@ -33,6 +33,7 @@ * */ +#include #include #include #include diff --git a/drivers/isdn/mISDN/core.c b/drivers/isdn/mISDN/core.c index 21d34be5af6a..afeebb00fe0b 100644 --- a/drivers/isdn/mISDN/core.c +++ b/drivers/isdn/mISDN/core.c @@ -12,6 +12,7 @@ * */ +#include #include #include #include diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c index 9c7c0d1ba55f..713ef2b805a2 100644 --- a/drivers/isdn/mISDN/dsp_cmx.c +++ b/drivers/isdn/mISDN/dsp_cmx.c @@ -124,6 +124,7 @@ /* delay.h is required for hw_lock.h */ +#include #include #include #include diff --git a/drivers/isdn/mISDN/dsp_core.c b/drivers/isdn/mISDN/dsp_core.c index 6eac588e0a37..6f5b54864283 100644 --- a/drivers/isdn/mISDN/dsp_core.c +++ b/drivers/isdn/mISDN/dsp_core.c @@ -154,6 +154,7 @@ */ #include +#include #include #include #include diff --git a/drivers/isdn/mISDN/dsp_pipeline.c b/drivers/isdn/mISDN/dsp_pipeline.c index e9941678edfa..621f31007095 100644 --- a/drivers/isdn/mISDN/dsp_pipeline.c +++ b/drivers/isdn/mISDN/dsp_pipeline.c @@ -25,6 +25,7 @@ */ #include +#include #include #include #include diff --git a/drivers/isdn/mISDN/dsp_tones.c b/drivers/isdn/mISDN/dsp_tones.c index 1debf53670de..7dbe54ed1deb 100644 --- a/drivers/isdn/mISDN/dsp_tones.c +++ b/drivers/isdn/mISDN/dsp_tones.c @@ -8,6 +8,7 @@ * */ +#include #include #include #include "core.h" diff --git a/drivers/isdn/mISDN/hwchannel.c b/drivers/isdn/mISDN/hwchannel.c index e8049be552aa..307bd6e8988b 100644 --- a/drivers/isdn/mISDN/hwchannel.c +++ b/drivers/isdn/mISDN/hwchannel.c @@ -15,6 +15,7 @@ * */ +#include #include #include diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c index 325b1ad7d4b8..22f38e48ac4e 100644 --- a/drivers/isdn/mISDN/l1oip_core.c +++ b/drivers/isdn/mISDN/l1oip_core.c @@ -233,6 +233,7 @@ socket process and create a new one. #include #include #include +#include #include #include "core.h" #include "l1oip.h" diff --git a/drivers/isdn/mISDN/layer1.c b/drivers/isdn/mISDN/layer1.c index e826eeb1ecec..ac4aa18c632b 100644 --- a/drivers/isdn/mISDN/layer1.c +++ b/drivers/isdn/mISDN/layer1.c @@ -16,6 +16,7 @@ */ +#include #include #include #include "core.h" diff --git a/drivers/isdn/mISDN/layer2.c b/drivers/isdn/mISDN/layer2.c index e17f0044e0b6..c97371788764 100644 --- a/drivers/isdn/mISDN/layer2.c +++ b/drivers/isdn/mISDN/layer2.c @@ -16,6 +16,7 @@ */ #include +#include #include "core.h" #include "fsm.h" #include "layer2.h" diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c index fcfe17a19a61..3232206406b1 100644 --- a/drivers/isdn/mISDN/socket.c +++ b/drivers/isdn/mISDN/socket.c @@ -16,6 +16,7 @@ */ #include +#include #include "core.h" static u_int *debug; diff --git a/drivers/isdn/mISDN/stack.c b/drivers/isdn/mISDN/stack.c index 0d05ec43012c..b159bd59e64e 100644 --- a/drivers/isdn/mISDN/stack.c +++ b/drivers/isdn/mISDN/stack.c @@ -15,6 +15,7 @@ * */ +#include #include #include #include diff --git a/drivers/isdn/mISDN/tei.c b/drivers/isdn/mISDN/tei.c index 6d4da6095885..34e898fe2f4f 100644 --- a/drivers/isdn/mISDN/tei.c +++ b/drivers/isdn/mISDN/tei.c @@ -16,6 +16,7 @@ */ #include "layer2.h" #include +#include #include "core.h" #define ID_REQUEST 1 diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c index 5b7e9bf514f1..8785004e85e0 100644 --- a/drivers/isdn/mISDN/timerdev.c +++ b/drivers/isdn/mISDN/timerdev.c @@ -19,6 +19,7 @@ #include #include +#include #include #include #include -- cgit v1.2.2