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2009-02-06tracing: Introduce trace_buffer_{lock_reserve,unlock_commit}Arnaldo Carvalho de Melo
Impact: new API These new functions do what previously was being open coded, reducing the number of details ftrace plugin writers have to worry about. It also standardizes the handling of stacktrace, userstacktrace and other trace options we may introduce in the future. With this patch, for instance, the blk tracer (and some others already in the tree) can use the "userstacktrace" /d/tracing/trace_options facility. $ codiff /tmp/vmlinux.before /tmp/vmlinux.after linux-2.6-tip/kernel/trace/trace.c: trace_vprintk | -5 trace_graph_return | -22 trace_graph_entry | -26 trace_function | -45 __ftrace_trace_stack | -27 ftrace_trace_userstack | -29 tracing_sched_switch_trace | -66 tracing_stop | +1 trace_seq_to_user | -1 ftrace_trace_special | -63 ftrace_special | +1 tracing_sched_wakeup_trace | -70 tracing_reset_online_cpus | -1 13 functions changed, 2 bytes added, 355 bytes removed, diff: -353 linux-2.6-tip/block/blktrace.c: __blk_add_trace | -58 1 function changed, 58 bytes removed, diff: -58 linux-2.6-tip/kernel/trace/trace.c: trace_buffer_lock_reserve | +88 trace_buffer_unlock_commit | +86 2 functions changed, 174 bytes added, diff: +174 /tmp/vmlinux.after: 16 functions changed, 176 bytes added, 413 bytes removed, diff: -237 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Frédéric Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-06ring_buffer: remove unused flags parameterArnaldo Carvalho de Melo
Impact: API change, cleanup >From ring_buffer_{lock_reserve,unlock_commit}. $ codiff /tmp/vmlinux.before /tmp/vmlinux.after linux-2.6-tip/kernel/trace/trace.c: trace_vprintk | -14 trace_graph_return | -14 trace_graph_entry | -10 trace_function | -8 __ftrace_trace_stack | -8 ftrace_trace_userstack | -8 tracing_sched_switch_trace | -8 ftrace_trace_special | -12 tracing_sched_wakeup_trace | -8 9 functions changed, 90 bytes removed, diff: -90 linux-2.6-tip/block/blktrace.c: __blk_add_trace | -1 1 function changed, 1 bytes removed, diff: -1 /tmp/vmlinux.after: 10 functions changed, 91 bytes removed, diff: -91 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Frédéric Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05trace: code style clean upSteven Rostedt
Ingo Molnar suggested using goto logic to keep the indentation down and to be able to remove the nasty line breaks. This actually makes the code a bit more readable. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05trace: Remove unused trace_array_cpu parameterArnaldo Carvalho de Melo
Impact: cleanup Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05trace_branch: Remove unused functionArnaldo Carvalho de Melo
Impact: cleanup Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05trace: assign defaults at register_ftrace_eventArnaldo Carvalho de Melo
Impact: simplification of tracers As all tracers are doing this we might as well do it in register_ftrace_event and save one branch each time we call these callbacks. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05Merge branches 'tracing/ftrace' and 'linus' into tracing/coreIngo Molnar
2009-02-04trace: make the trace_event callbacks return enum print_line_tArnaldo Carvalho de Melo
As they actually all return these enumerators. Reported-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-04trace: judicious error checking of trace_seq resultsArnaldo Carvalho de Melo
Impact: bugfix and cleanup Some callsites were returning either TRACE_ITER_PARTIAL_LINE if the trace_seq routines (trace_seq_printf, etc) returned 0 meaning its buffer was full, or zero otherwise. But... /* Return values for print_line callback */ enum print_line_t { TRACE_TYPE_PARTIAL_LINE = 0, /* Retry after flushing the seq */ TRACE_TYPE_HANDLED = 1, TRACE_TYPE_UNHANDLED = 2 /* Relay to other output functions */ }; In other cases the return value was not being relayed at all. Most of the time it didn't hurt because the page wasn't get filled, but for correctness sake, handle the return values everywhere. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-04Merge branches 'tracing/blktrace', 'tracing/ftrace', 'tracing/urgent' and ↵Ingo Molnar
'linus' into tracing/core
2009-02-04Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (40 commits) Blackfin arch: Remove outdated code Blackfin arch: Fix udelay implementation Blackfin arch: Update Copyright information Blackfin arch: Add BF561 PPI POLS, POLC Masks Blackfin arch: Update CM-BF527 kernel config Blackfin arch: define bfin_memmap as static since it is only used here Blackfin arch: cplb mananger: use a do...while loop rather than a for loop Blackfin arch: fix bug - traps test case 19 for exception 0x2d fails Blackfin arch: add platform device bfin_mii-bus and KSZ8893M switch driver platform resources to board files Blackfin arch: build jtag tty driver as a module by default Blackfin arch: fix 2 bugs related to debug Blackfin arch: Add ANOMALY_05000380 to BF54x to kill the compile warning Blackfin arch: Fix bug - 561 SMP kernel can't boot from jffs2 Blackfin arch: base SIC_IWR# programming on whether the MMR exists Blackfin arch: read SYSCR on newer parts that mirror the bits of SWRST in it Blackfin arch: fixup board init function name Blackfin arch: drop CONFIG_I2C_BOARDINFO ifdefs Blackfin arch: bfin_reset->_bfin_reset redirection no longer needed Blackfin arch: sync reboot handler with version in u-boot Blackfin arch: Faster Implementation of csum_tcpudp_nofold() ...
2009-02-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Kill bogus TPC/address truncation during 32-bit faults. sparc: fixup for sparseirq changes sparc64: Validate kernel generated fault addresses on sparc64. sparc64: On non-Niagara, need to touch NMI watchdog in NOHZ mode. sparc64: Implement NMI watchdog on capable cpus. sparc: Probe PMU type and record in sparc_pmu_type. sparc64: Move generic PCR support code to seperate file.
2009-02-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: sunrpc: fix rdma dependencies e1000: Fix PCI enable to honor the need_ioport flag sgi-xp: link XPNET's net_device_ops to its net_device structure pcnet_cs: Fix misuse of the equality operator. hso: add new device id's dca: redesign locks to fix deadlocks cassini/sungem: limit reaches -1, but 0 tested net: variables reach -1, but 0 tested qlge: bugfix: Add missing netif_napi_del call. qlge: bugfix: Add flash offset for second port. qlge: bugfix: Fix endian issue when reading flash. udp: increments sk_drops in __udp_queue_rcv_skb() net: Fix userland breakage wrt. linux/if_tunnel.h net: packet socket packet_lookup_frame fix
2009-02-04Merge branch 'for-linus' of git://git.o-hand.com/linux-mfdLinus Torvalds
* 'for-linus' of git://git.o-hand.com/linux-mfd: mfd: Remove non exported references from pcf50633
2009-02-04Blackfin arch: Remove outdated codeMichael Hennerich
The removed version with the loop registers saved on the stack was originally intended to workaround the missing toolchain support for LoopReg Clobbers. Since our toolchain now supports these there is no point in keeping this workaround. And since we don't touch LoopRegs anymore we're no longer subject for ANOMALY_05000312. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix udelay implementationMichael Hennerich
Avoid possible overflow during 32*32->32 multiplies. Reported-by: Marco Reppenhagen <marco.reppenhagen@auerswald.de> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Update Copyright informationMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Add BF561 PPI POLS, POLC MasksMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Update CM-BF527 kernel configMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: define bfin_memmap as static since it is only used hereMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: cplb mananger: use a do...while loop rather than a for loopMike Frysinger
use a do...while loop rather than a for loop to get slightly better optimization and to avoid gcc "may be used uninitialized" warnings ... we know that the [id]cplb_nr_bounds variables will never be 0, so this is OK Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: fix bug - traps test case 19 for exception 0x2d failsBernd Schmidt
Enable null pointer checking for ICPLBs. The code was there but for some reason I had commented it out at some stage during development. Should restrict this to 1K since atomic ops start there. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: add platform device bfin_mii-bus and KSZ8893M switch driver ↵Graf Yang
platform resources to board files Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: build jtag tty driver as a module by defaultMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: fix 2 bugs related to debugJie Zhang
- unable to single step over emuexcpt instruction - gdbproxy goes into infinite loop when doing gdb does "next" over "emuexcpt" Don't decrement PC after software breakpoint. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Add ANOMALY_05000380 to BF54x to kill the compile warningBryan Wu
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix bug - 561 SMP kernel can't boot from jffs2Graf Yang
bss_l2 section is garbage when the data in this section is used by _bfin_relocate_l1_mem, so move the zero out function ahead. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: base SIC_IWR# programming on whether the MMR existsMike Frysinger
base SIC_IWR# programming on whether the MMR exists rather than having to maintain another list of processors Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: read SYSCR on newer parts that mirror the bits of SWRST in itMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: fixup board init function nameMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: drop CONFIG_I2C_BOARDINFO ifdefsMike Frysinger
Drop CONFIG_I2C_BOARDINFO ifdefs as the common i2c header handles this already by stubbing things out Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: bfin_reset->_bfin_reset redirection no longer neededMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: sync reboot handler with version in u-bootMike Frysinger
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Faster Implementation of csum_tcpudp_nofold()Michael Hennerich
Avoid conditional branch instructions during carry bit additions. Special thanks to Bernd. Simplify: Use ((len + proto) << 8) like every other __LITTLE_ENDIAN__ machine Cc: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix bug - BF518 port F, G, and H have different mux offset ↵Graf Yang
compare to BF527 [Mike Frysinger <vapier.adi@gmail.com>: keep the ifdef nest down] Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Add in cflag to support mlong-calls for kgdb_testGrace Pan
Signed-off-by: Grace Pan <grace.pan@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix bug - Run "reboot" hangs bf518-ezbrdSonic Zhang
[Mike Frysinger <vapier.adi@gmail.com>: - setup P_DEFAULT_BOOT_SPI_CS for every arch based on the default bootrom behavior and convert all our boards to it - revert previous anomaly change ... bf51x is not affected by anomaly 05000353] Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04MAINTIANERS: Blackfin: remove subscribers-only markingMike Frysinger
remove subscribers-only marking as the list is automatically & silently moderated for people Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Add ability to count and display number of NMI interruptsRobin Getz
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Add a few more instructions that can cause the trace buffer ↵Robin Getz
to be discontiguous Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix URLRobin Getz
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: cleanup bf54x ifdef mess in gpio codeMike Frysinger
merge more of the bf54x and !bf54x gpio code together to cut down on #ifdef mess Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Add one more check on `fp' to prevent double faultJie Zhang
Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: explicit add a might sleep to gpio_freeUwe Kleine-Koenig
According to the documentation gpio_free should only be called from task context only. To make this more explicit add a might sleep to all implementations. This patch changes the gpio_free implementations for the blackfin architecture. Signed-off-by: Uwe Kleine-Koenig <ukleinek@strlen.de> Cc: David Brownell <david-b@pacbell.net> Acked-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2009-02-04Blackfin arch: don't accidently re-enable interruptsRobin Getz
Make sure we don't accidently re-enable interrupts if we are being called in atomic context Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Print out where the bootmode is coming from (for easier ↵Robin Getz
debugging). Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: reset POLAR setting when acquiring a gpio for the first timeMichael Hennerich
when requesting a GPIO for the first time, the POLAR setting is not set to a sane state. this can lead to indeterminate behavior that cannot be resolved without an explicit write to the Blackfin port POLAR register. when requesting a GPIO for the first time via gpio_request(), the POLAR setting for the GPIO in question should be set to sane state. this should occur if the GPIO has not been allocated in any other way. some examples: - when doing something like "request_irq(); gpio_request();" on the same GPIO, the POLAR setting should not be reset. - when doing "gpio_request(); gpio_request();" on the same GPIO, the POLAR setting should be reset only the first time and not the second. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix Bug - request lines with peripheral_request_list, but ↵Michael Hennerich
don't get freed with peripheral_free_list Remove erroneous check_gpio(ident) in peripheral_free() Reported-by: Michael McTernan <mmcternan@airvana.com> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: Fix Bug - Kernel does not boot if re-program clocksMichael Hennerich
On BF561 EBIU_SDGCTL bit 31 controls the SDRAM external data path width, typically set 0 for a 32-bit bus width. On other Blackfin derivatives this bit should be set by default. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04Blackfin arch: fix bug - Dmacopy failed in BF537-STAMPMike Frysinger
Dmacopy failed in BF537-STAMP when copy from SRAM to SDRAM and kernel will reboot automatically. Fixing by doing a SSYNC before mucking with DMA registers Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
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