/*
 * Provide a default dump_stack() function for architectures
 * which don't implement their own.
 */

#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/atomic.h>

static void __dump_stack(void)
{
	dump_stack_print_info(KERN_DEFAULT);
	show_stack(NULL, NULL);
}

/**
 * dump_stack - dump the current task information and its stack trace
 *
 * Architectures can override this implementation by implementing its own.
 */
#ifdef CONFIG_SMP
static atomic_t dump_lock = ATOMIC_INIT(-1);

asmlinkage __visible void dump_stack(void)
{
	unsigned long flags;
	int was_locked;
	int old;
	int cpu;

	/*
	 * Permit this cpu to perform nested stack dumps while serialising
	 * against other CPUs
	 */
retry:
	local_irq_save(flags);
	cpu = smp_processor_id();
	old = atomic_cmpxchg(&dump_lock, -1, cpu);
	if (old == -1) {
		was_locked = 0;
	} else if (old == cpu) {
		was_locked = 1;
	} else {
		local_irq_restore(flags);
		cpu_relax();
		goto retry;
	}

	__dump_stack();

	if (!was_locked)
		atomic_set(&dump_lock, -1);

	local_irq_restore(flags);
}
#else
asmlinkage __visible void dump_stack(void)
{
	__dump_stack();
}
#endif
EXPORT_SYMBOL(dump_stack);
private-remove'>nds-private-remove</option>
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=3258943ddb90157a5b220656712394bd91bd47f1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=3258943ddb90157a5b220656712394bd91bd47f1'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?id=3258943ddb90157a5b220656712394bd91bd47f1'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/caif?id=3258943ddb90157a5b220656712394bd91bd47f1'>caif</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3258943ddb90157a5b220656712394bd91bd47f1'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-23 13:10:50 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-23 13:10:50 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/caif?id=3258943ddb90157a5b220656712394bd91bd47f1'>3258943ddb90157a5b220656712394bd91bd47f1</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/caif?id=3258943ddb90157a5b220656712394bd91bd47f1'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3258943ddb90157a5b220656712394bd91bd47f1'>174314734fe66f20b9b40475130977e7b2e5cf19</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/caif?id=3258943ddb90157a5b220656712394bd91bd47f1'>include/net/caif</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/caif?id=7a308bb3016f57e5be11a677d15b821536419d36'>7a308bb3016f57e5be11a677d15b821536419d36</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/caif?id=3258943ddb90157a5b220656712394bd91bd47f1&amp;id2=7a308bb3016f57e5be11a677d15b821536419d36'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/caif?id=932790109f62aa52bdb4bb62aa66653c0b51bc75'>932790109f62aa52bdb4bb62aa66653c0b51bc75</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/caif?id=3258943ddb90157a5b220656712394bd91bd47f1&amp;id2=932790109f62aa52bdb4bb62aa66653c0b51bc75'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'drm-fixes-for-v4.10-rc6' of git://people.freedesktop.org/~airlied/linux</div><div class='commit-msg'>Pull drm fixes from Dave Airlie:
 "drm fixes across the board.

  Okay holidays and LCA kinda caught up with me, I thought I'd get some
  of this dequeued last week, but Hobart was sunny and warm and not all
  gloomy and rainy as usual.

  This is a bit large, but not too much considering it's two weeks stuff
  from AMD and Intel.

  core:
   - one locking fix that helps with dynamic suspend/resume races

  i915:
   - mostly GVT updates, GVT was a recent introduction so fixes for it
     shouldn't cause any notable side effects.

  amdgpu:
   - a bunch of fixes for GPUs with a different memory controller design
     that need different firmware.

  exynos:
   - decon regression fixes

  msm:
   - two regression fixes

  etnaviv:
   - a workaround for an mmu bug that needs a lot more work.

  virtio:
   - sparse fix, and a maintainers update"

* tag 'drm-fixes-for-v4.10-rc6' of git://people.freedesktop.org/~airlied/linux: (56 commits)
  drm/exynos/decon5433: set STANDALONE_UPDATE_F on output enablement
  drm/exynos/decon5433: fix CMU programming
  drm/exynos/decon5433: do not disable video after reset
  drm/i915: Ignore bogus plane coordinates on SKL when the plane is not visible
  drm/i915: Remove WaDisableLSQCROPERFforOCL KBL workaround.
  drm/amdgpu: add support for new hainan variants
  drm/radeon: add support for new hainan variants
  drm/amdgpu: change clock gating mode for uvd_v4.
  drm/amdgpu: fix program vce instance logic error.
  drm/amdgpu: fix bug set incorrect value to vce register
  Revert "drm/amdgpu: Only update the CUR_SIZE register when necessary"
  drm/msm: fix potential null ptr issue in non-iommu case
  drm/msm/mdp5: rip out plane-&gt;pending tracking
  drm/exynos/decon5433: set STANDALONE_UPDATE_F also if planes are disabled
  drm/exynos/decon5433: update shadow registers iff there are active windows
  drm/i915/gvt: rewrite gt reset handler using new function intel_gvt_reset_vgpu_locked
  drm/i915/gvt: fix vGPU instance reuse issues by vGPU reset function
  drm/i915/gvt: introduce intel_vgpu_reset_mmio() to reset mmio space
  drm/i915/gvt: move mmio init/clean function to mmio.c
  drm/i915/gvt: introduce intel_vgpu_reset_cfg_space to reset configuration space
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3258943ddb90157a5b220656712394bd91bd47f1'>Diffstat</a> (limited to 'include/net/caif')</div><table summary='diffstat' class='diffstat'>